Load third/redact on Unreal

* add a test for channel +n / -n

* Update irctest/server_tests/chmodes/nooutside.py

Co-authored-by: Val Lorentz <progval+github@progval.net>

* Update irctest/server_tests/chmodes/nooutside.py

Co-authored-by: Val Lorentz <progval+github@progval.net>

* consistently rename to "no external messages"

---------

Co-authored-by: Val Lorentz <progval+github@progval.net>

.github/deploy_to_netlify.py

@@ -0,0 +1,120 @@
+#!/usr/bin/env python3
+
+import json
+import os
+import pprint
+import re
+import subprocess
+import sys
+import urllib.request
+
+event_name = os.environ["GITHUB_EVENT_NAME"]
+
+is_pull_request = is_push = False
+if event_name.startswith("pull_request"):
+    is_pull_request = True
+elif event_name.startswith("push"):
+    is_push = True
+elif event_name.startswith("schedule"):
+    # Don't publish; scheduled workflows run against the latest commit of every
+    # implementation, so they are likely to have failed tests for the wrong reasons
+    sys.exit(0)
+else:
+    print("Unexpected event name:", event_name)
+
+with open(os.environ["GITHUB_EVENT_PATH"]) as fd:
+    github_event = json.load(fd)
+
+pprint.pprint(github_event)
+
+context_suffix = ""
+
+command = ["netlify", "deploy", "--dir=dashboard/"]
+if is_pull_request:
+    pr_number = github_event["number"]
+    sha = github_event.get("after") or github_event["pull_request"]["head"]["sha"]
+    # Aliases can't exceed 37 chars
+    command.extend(["--alias", f"pr-{pr_number}-{sha[0:10]}"])
+    context_suffix = " (pull_request)"
+elif is_push:
+    ref = github_event["ref"]
+    m = re.match("refs/heads/(.*)", ref)
+    if m:
+        branch = m.group(1)
+        sha = github_event["head_commit"]["id"]
+
+        if branch in ("main", "master"):
+            command.extend(["--prod"])
+        else:
+            command.extend(["--alias", f"br-{branch[0:23]}-{sha[0:10]}"])
+            context_suffix = " (push)"
+    else:
+        # TODO
+        pass
+
+
+print("Running", command)
+proc = subprocess.run(command, capture_output=True)
+
+output = proc.stdout.decode()
+assert proc.returncode == 0, (output, proc.stderr.decode())
+print(output)
+
+m = re.search("https://[^ ]*--[^ ]*netlify.app", output)
+assert m
+netlify_site_url = m.group(0)
+target_url = f"{netlify_site_url}/index.xhtml"
+
+print("Published to", netlify_site_url)
+
+
+def send_status() -> None:
+    statuses_url = github_event["repository"]["statuses_url"].format(sha=sha)
+
+    payload = {
+        "state": "success",
+        "context": f"Dashboard{context_suffix}",
+        "description": "Table of all test results",
+        "target_url": target_url,
+    }
+    request = urllib.request.Request(
+        statuses_url,
+        data=json.dumps(payload).encode(),
+        headers={
+            "Authorization": f'token {os.environ["GITHUB_TOKEN"]}',
+            "Content-Type": "text/json",
+            "Accept": "application/vnd.github+json",
+        },
+    )
+
+    response = urllib.request.urlopen(request)
+
+    assert response.status == 201, response.read()
+
+
+send_status()
+
+
+def send_pr_comment() -> None:
+    comments_url = github_event["pull_request"]["_links"]["comments"]["href"]
+
+    payload = {
+        "body": f"[Test results]({target_url})",
+    }
+    request = urllib.request.Request(
+        comments_url,
+        data=json.dumps(payload).encode(),
+        headers={
+            "Authorization": f'token {os.environ["GITHUB_TOKEN"]}',
+            "Content-Type": "text/json",
+            "Accept": "application/vnd.github+json",
+        },
+    )
+
+    response = urllib.request.urlopen(request)
+
+    assert response.status == 201, response.read()
+
+
+if is_pull_request:
+    send_pr_comment()

.github/workflows/test-devel_release.yml

@@ -3,28 +3,32 @@
 
 jobs:
   build-anope:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
-    - uses: actions/checkout@v2
     - name: Create directories
       run: cd ~/; mkdir -p .local/ go/
-    - name: Cache Anope
-      uses: actions/cache@v2
+    - name: Cache dependencies
+      uses: actions/cache@v3
       with:
-        key: 3-${{ runner.os }}-anope-2.0.9
+        key: 3-${{ runner.os }}-anope-devel_release
         path: '~/.cache
 
-          ${{ github.workspace }}/anope
+          ${ github.workspace }/anope
 
           '
+    - uses: actions/checkout@v3
+    - name: Set up Python 3.7
+      uses: actions/setup-python@v4
+      with:
+        python-version: 3.7
     - name: Checkout Anope
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
       with:
         path: anope
         ref: 2.0.9
         repository: anope/anope
     - name: Build Anope
-      run: |-
+      run: |
         cd $GITHUB_WORKSPACE/anope/
         cp $GITHUB_WORKSPACE/data/anope/* .
         CFLAGS=-O0 ./Config -quick
@@ -33,23 +37,23 @@ jobs:
     - name: Make artefact tarball
       run: cd ~; tar -czf artefacts-anope.tar.gz .local/ go/
     - name: Upload build artefacts
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v3
       with:
         name: installed-anope
         path: ~/artefacts-*.tar.gz
         retention-days: 1
   build-inspircd:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
     - name: Create directories
       run: cd ~/; mkdir -p .local/ go/
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Set up Python 3.7
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
       with:
         python-version: 3.7
     - name: Checkout InspIRCd
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
       with:
         path: inspircd
         ref: insp3
@@ -57,72 +61,72 @@ jobs:
     - name: Build InspIRCd
       run: |
         cd $GITHUB_WORKSPACE/inspircd/
-        patch src/inspircd.cpp < $GITHUB_WORKSPACE/inspircd_mainloop.patch
+
+        # Insp3 <= 3.16.0 and Insp4 <= 4.0.0a21 don't support -DINSPIRCD_UNLIMITED_MAINLOOP
+        patch src/inspircd.cpp < $GITHUB_WORKSPACE/patches/inspircd_mainloop.patch || true
+
         ./configure --prefix=$HOME/.local/inspircd --development
-        make -j 4
+
+        CXXFLAGS=-DINSPIRCD_UNLIMITED_MAINLOOP make -j 4
         make install
     - name: Make artefact tarball
       run: cd ~; tar -czf artefacts-inspircd.tar.gz .local/ go/
     - name: Upload build artefacts
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v3
       with:
         name: installed-inspircd
         path: ~/artefacts-*.tar.gz
         retention-days: 1
   publish-test-results:
     if: success() || failure()
-    name: Publish Unit Tests Results
+    name: Publish Dashboard
     needs:
     - test-inspircd
     - test-inspircd-anope
     - test-inspircd-atheme
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Download Artifacts
-      uses: actions/download-artifact@v2
+      uses: actions/download-artifact@v3
       with:
         path: artifacts
-    - if: github.event_name == 'pull_request'
-      name: Publish Unit Test Results
-      uses: actions/github-script@v4
-      with:
-        result-encoding: string
-        script: |
-          let body = '';
-          const options = {};
-          options.listeners = {
-              stdout: (data) => {
-                  body += data.toString();
-              }
-          };
-          await exec.exec('bash', ['-c', 'shopt -s globstar; python3 report.py artifacts/**/*.xml'], options);
-          github.issues.createComment({
-            issue_number: context.issue.number,
-            owner: context.repo.owner,
-            repo: context.repo.repo,
-            body: body,
-          });
-          return body;
+    - name: Install dashboard dependencies
+      run: |-
+        python -m pip install --upgrade pip
+        pip install defusedxml docutils -r requirements.txt
+    - name: Generate dashboard
+      run: |-
+        shopt -s globstar
+        python3 -m irctest.dashboard.format dashboard/ artifacts/**/*.xml
+        echo '/ /index.xhtml' > dashboard/_redirects
+    - name: Install netlify-cli
+      run: npm i -g netlify-cli
+    - env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        NETLIFY_AUTH_TOKEN: ${{ secrets.NETLIFY_AUTH_TOKEN }}
+        NETLIFY_SITE_ID: ${{ secrets.NETLIFY_SITE_ID }}
+      name: Deploy to Netlify
+      run: ./.github/deploy_to_netlify.py
   test-inspircd:
     needs:
     - build-inspircd
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Set up Python 3.7
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
       with:
         python-version: 3.7
     - name: Download build artefacts
-      uses: actions/download-artifact@v2
+      uses: actions/download-artifact@v3
       with:
         name: installed-inspircd
         path: '~'
     - name: Unpack artefacts
       run: cd ~; find -name 'artefacts-*.tar.gz' -exec tar -xzf '{}' \;
-    - name: Install Atheme
-      run: sudo apt-get install atheme-services
+    - name: Install system dependencies
+      run: sudo apt-get install atheme-services faketime
     - name: Install irctest dependencies
       run: |-
         python -m pip install --upgrade pip
@@ -130,37 +134,38 @@ jobs:
     - name: Test with pytest
       run: PYTEST_ARGS='--junit-xml pytest.xml' PATH=$HOME/.local/bin:$PATH  PATH=~/.local/inspircd/sbin:~/.local/inspircd/bin:$PATH
         make inspircd
+      timeout-minutes: 30
     - if: always()
       name: Publish results
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v3
       with:
-        name: pytest results inspircd (devel_release)
+        name: pytest-results_inspircd_devel_release
         path: pytest.xml
   test-inspircd-anope:
     needs:
     - build-inspircd
     - build-anope
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Set up Python 3.7
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
       with:
         python-version: 3.7
     - name: Download build artefacts
-      uses: actions/download-artifact@v2
+      uses: actions/download-artifact@v3
       with:
         name: installed-inspircd
         path: '~'
     - name: Download build artefacts
-      uses: actions/download-artifact@v2
+      uses: actions/download-artifact@v3
       with:
         name: installed-anope
         path: '~'
     - name: Unpack artefacts
       run: cd ~; find -name 'artefacts-*.tar.gz' -exec tar -xzf '{}' \;
-    - name: Install Atheme
-      run: sudo apt-get install atheme-services
+    - name: Install system dependencies
+      run: sudo apt-get install atheme-services faketime
     - name: Install irctest dependencies
       run: |-
         python -m pip install --upgrade pip
@@ -168,31 +173,32 @@ jobs:
     - name: Test with pytest
       run: PYTEST_ARGS='--junit-xml pytest.xml' PATH=$HOME/.local/bin:$PATH  PATH=~/.local/inspircd/sbin:~/.local/inspircd/bin:$PATH  make
         inspircd-anope
+      timeout-minutes: 30
     - if: always()
       name: Publish results
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v3
       with:
-        name: pytest results inspircd-anope (devel_release)
+        name: pytest-results_inspircd-anope_devel_release
         path: pytest.xml
   test-inspircd-atheme:
     needs:
     - build-inspircd
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Set up Python 3.7
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
       with:
         python-version: 3.7
     - name: Download build artefacts
-      uses: actions/download-artifact@v2
+      uses: actions/download-artifact@v3
       with:
         name: installed-inspircd
         path: '~'
     - name: Unpack artefacts
       run: cd ~; find -name 'artefacts-*.tar.gz' -exec tar -xzf '{}' \;
-    - name: Install Atheme
-      run: sudo apt-get install atheme-services
+    - name: Install system dependencies
+      run: sudo apt-get install atheme-services faketime
     - name: Install irctest dependencies
       run: |-
         python -m pip install --upgrade pip
@@ -200,11 +206,12 @@ jobs:
     - name: Test with pytest
       run: PYTEST_ARGS='--junit-xml pytest.xml' PATH=$HOME/.local/bin:$PATH  PATH=~/.local/inspircd/sbin:~/.local/inspircd/bin:$PATH
         make inspircd-atheme
+      timeout-minutes: 30
     - if: always()
       name: Publish results
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v3
       with:
-        name: pytest results inspircd-atheme (devel_release)
+        name: pytest-results_inspircd-atheme_devel_release
         path: pytest.xml
 name: irctest with devel_release versions
 'on':

.pre-commit-config.yaml

@@ -2,22 +2,23 @@ exclude: ^irctest/scram
 
 repos:
   - repo: https://github.com/psf/black
-    rev: 20.8b1
+    rev: 23.1.0
     hooks:
       - id: black
         language_version: python3
 
   - repo: https://github.com/PyCQA/isort
-    rev: 5.5.2
+    rev: 5.11.5
     hooks:
       - id: isort
 
-  - repo: https://gitlab.com/pycqa/flake8
-    rev: 3.8.3
+  - repo: https://github.com/PyCQA/flake8
+    rev: 5.0.4
     hooks:
       - id: flake8
 
   - repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v0.812
+    rev: v1.0.1
     hooks:
       - id: mypy
+        additional_dependencies: [types-PyYAML, types-docutils]

Makefile

@@ -7,74 +7,47 @@ PYTEST_ARGS ?=
 # Will be appended at the end of the -k argument to pytest
 EXTRA_SELECTORS ?=
 
-# testPlainLarge fails because it doesn't handle split AUTHENTICATE (reported on IRC)
-ANOPE_SELECTORS := \
-	and not testPlainLarge
-
-# buffering tests cannot pass because of issues with UTF-8 handling: https://github.com/DALnet/bahamut/issues/196
 BAHAMUT_SELECTORS := \
 	not Ergo \
 	and not deprecated \
 	and not strict \
 	and not IRCv3 \
-	and not buffering \
 	$(EXTRA_SELECTORS)
 
-# testQuitErrors is very flaky
-# AccountTagTestCase.testInvite fails because https://github.com/solanum-ircd/solanum/issues/166
-# testKickDefaultComment fails because it uses the nick of the kickee rather than the kicker.
-# testWhoisNumerics[oper] fails because charybdis uses RPL_WHOISSPECIAL instead of RPL_WHOISOPERATOR
 CHARYBDIS_SELECTORS := \
 	not Ergo \
 	and not deprecated \
 	and not strict \
-	and not testQuitErrors \
-	and not testKickDefaultComment \
-	and not (AccountTagTestCase and testInvite) \
-	and not (testWhoisNumerics and oper) \
 	$(EXTRA_SELECTORS)
 
 ERGO_SELECTORS := \
 	not deprecated \
 	$(EXTRA_SELECTORS)
 
-# testInviteUnoppedModern is the only strict test that Hybrid fails
 HYBRID_SELECTORS := \
 	not Ergo \
-	and not testInviteUnoppedModern \
 	and not deprecated \
 	$(EXTRA_SELECTORS)
 
-# testNoticeNonexistentChannel fails because of https://github.com/inspircd/inspircd/issues/1849
-# testBotPrivateMessage and testBotChannelMessage fail because https://github.com/inspircd/inspircd/pull/1910 is not released yet
-# testNamesInvalidChannel and testNamesNonexistingChannel fail because https://github.com/inspircd/inspircd/pull/1922 is not released yet.
 INSPIRCD_SELECTORS := \
 	not Ergo \
 	and not deprecated \
 	and not strict \
-	and not testNoticeNonexistentChannel \
-	and not testBotPrivateMessage and not testBotChannelMessage \
-	and not testNamesInvalidChannel and not testNamesNonexistingChannel \
 	$(EXTRA_SELECTORS)
 
-# buffering tests fail because ircu2 discards the whole buffer on long lines (TODO: refine how we exclude these tests)
-# testQuit and testQuitErrors fail because ircu2 does not send ERROR or QUIT
-# lusers tests fail because they depend on Modern behavior, not just RFC2812 (TODO: update lusers tests to accept RFC2812-compliant implementations)
-# statusmsg tests fail because STATUSMSG is present in ISUPPORT, but it not actually supported as PRIVMSG target
-# testKeyValidation[empty] fails because ircu2 returns ERR_NEEDMOREPARAMS on empty keys: https://github.com/UndernetIRC/ircu2/issues/13
-# testKickDefaultComment fails because it uses the nick of the kickee rather than the kicker.
-# testEmptyRealname fails because it uses a default value instead of ERR_NEEDMOREPARAMS.
+# HelpTestCase fails because it returns NOTICEs instead of numerics
 IRCU2_SELECTORS := \
 	not Ergo \
 	and not deprecated \
 	and not strict \
-	and not buffering \
-	and not testQuit \
-	and not lusers \
-	and not statusmsg \
-	and not (testKeyValidation and empty) \
-	and not testKickDefaultComment \
-	and not testEmptyRealname \
+	$(EXTRA_SELECTORS)
+
+# same justification as ircu2
+# lusers "unregistered" tests fail because 
+NEFARIOUS_SELECTORS := \
+	not Ergo \
+	and not deprecated \
+	and not strict \
 	$(EXTRA_SELECTORS)
 
 # same justification as ircu2
@@ -82,22 +55,12 @@ SNIRCD_SELECTORS := \
 	not Ergo \
 	and not deprecated \
 	and not strict \
-	and not buffering \
-	and not testQuit \
-	and not lusers \
-	and not statusmsg \
 	$(EXTRA_SELECTORS)
 
-# testListEmpty and testListOne fails because irc2 deprecated LIST
-# testKickDefaultComment fails because it uses the nick of the kickee rather than the kicker.
-# testWallopsPrivileges fails because it ignores the command instead of replying ERR_UNKNOWNCOMMAND
 IRC2_SELECTORS := \
 	not Ergo \
 	and not deprecated \
 	and not strict \
-	and not testListEmpty and not testListOne \
-	and not testKickDefaultComment \
-	and not testWallopsPrivileges \
 	$(EXTRA_SELECTORS)
 
 MAMMON_SELECTORS := \
@@ -106,26 +69,14 @@ MAMMON_SELECTORS := \
 	and not strict \
 	$(EXTRA_SELECTORS)
 
-# testKeyValidation[spaces] and testKeyValidation[empty] fail because ngIRCd does not validate them https://github.com/ngircd/ngircd/issues/290
-# testStarNick: wat
-# testEmptyRealname fails because it uses a default value instead of ERR_NEEDMOREPARAMS.
-# chathistory tests fail because they need nicks longer than 9 chars
 NGIRCD_SELECTORS := \
 	not Ergo \
 	and not deprecated \
 	and not strict \
-	and not (testKeyValidation and (spaces or empty)) \
-	and not testStarNick \
-	and not testEmptyRealname \
-	and not chathistory \
 	$(EXTRA_SELECTORS)
 
-# testInviteUnoppedModern is the only strict test that Plexus4 fails
-# testInviteInviteOnlyModern fails because Plexus4 allows non-op to invite if (and only if) the channel is not invite-only
 PLEXUS4_SELECTORS := \
 	not Ergo \
-	and not testInviteUnoppedModern \
-	and not testInviteInviteOnlyModern \
 	and not deprecated \
 	$(EXTRA_SELECTORS)
 
@@ -136,47 +87,33 @@ LIMNORIA_SELECTORS := \
 	(foo or not foo) \
 	$(EXTRA_SELECTORS)
 
-# testQuitErrors is too flaky for CI
-# testKickDefaultComment fails because solanum uses the nick of the kickee rather than the kicker.
 SOLANUM_SELECTORS := \
 	not Ergo \
 	and not deprecated \
 	and not strict \
-	and not testQuitErrors \
-	and not testKickDefaultComment \
 	$(EXTRA_SELECTORS)
 
+# Same as Limnoria
 SOPEL_SELECTORS := \
-	not testPlainNotAvailable \
+	(foo or not foo) \
 	$(EXTRA_SELECTORS)
 
-# testNoticeNonexistentChannel fails: https://bugs.unrealircd.org/view.php?id=5949
-# regressions::testTagCap fails: https://bugs.unrealircd.org/view.php?id=5948
-# messages::testLineTooLong fails: https://bugs.unrealircd.org/view.php?id=5947
-# testCapRemovalByClient and testNakWhole fail pending https://github.com/unrealircd/unrealircd/pull/148
 # Tests marked with arbitrary_client_tags can't pass because Unreal whitelists which tags it relays
 # Tests marked with react_tag can't pass because Unreal blocks +draft/react https://github.com/unrealircd/unrealircd/pull/149
 # Tests marked with private_chathistory can't pass because Unreal does not implement CHATHISTORY for DMs
-# testChathistory[BETWEEN] fails: https://bugs.unrealircd.org/view.php?id=5952
-# testChathistory[AROUND] fails: https://bugs.unrealircd.org/view.php?id=5953
+
 UNREALIRCD_SELECTORS := \
 	not Ergo \
 	and not deprecated \
 	and not strict \
-	and not testNoticeNonexistentChannel \
-	and not (regressions.py and testTagCap) \
-	and not (messages.py and testLineTooLong) \
-	and not (cap.py and (testCapRemovalByClient or testNakWhole)) \
-	and not (account_tag.py and testInvite) \
 	and not arbitrary_client_tags \
 	and not react_tag \
 	and not private_chathistory \
-	and not (testChathistory and (between or around)) \
 	$(EXTRA_SELECTORS)
 
-.PHONY: all flakes bahamut charybdis ergo inspircd ircu2 snircd irc2 mammon limnoria sopel solanum unrealircd
+.PHONY: all flakes bahamut charybdis ergo inspircd ircu2 snircd irc2 mammon nefarious limnoria sopel solanum unrealircd
 
-all: flakes bahamut charybdis ergo inspircd ircu2 snircd irc2 mammon limnoria sopel solanum unrealircd
+all: flakes bahamut charybdis ergo inspircd ircu2 snircd irc2 mammon nefarious limnoria sopel solanum unrealircd
 
 flakes:
 	find irctest/ -name "*.py" -not -path "irctest/scram/*" -print0 | xargs -0 pyflakes3
@@ -185,7 +122,8 @@ bahamut:
 	$(PYTEST) $(PYTEST_ARGS) \
 		--controller=irctest.controllers.bahamut \
 		-m 'not services' \
-		-n 10 \
+		-n 4 \
+		-vv -s \
 		-k '$(BAHAMUT_SELECTORS)'
 
 bahamut-atheme:
@@ -193,7 +131,6 @@ bahamut-atheme:
 		--controller=irctest.controllers.bahamut \
 		--services-controller=irctest.controllers.atheme_services \
 		-m 'services' \
-		-n 10 \
 		-k '$(BAHAMUT_SELECTORS)'
 
 bahamut-anope:
@@ -201,8 +138,7 @@ bahamut-anope:
 		--controller=irctest.controllers.bahamut \
 		--services-controller=irctest.controllers.anope_services \
 		-m 'services' \
-		-n 10 \
-		-k '$(BAHAMUT_SELECTORS) $(ANOPE_SELECTORS)'
+		-k '$(BAHAMUT_SELECTORS)'
 
 charybdis:
 	$(PYTEST) $(PYTEST_ARGS) \
@@ -218,7 +154,7 @@ ergo:
 hybrid:
 	$(PYTEST) $(PYTEST_ARGS) \
 		--controller irctest.controllers.hybrid \
-		-m 'not services' \
+		--services-controller=irctest.controllers.anope_services \
 		-k "$(HYBRID_SELECTORS)"
 
 inspircd:
@@ -239,27 +175,34 @@ inspircd-anope:
 		--controller=irctest.controllers.inspircd \
 		--services-controller=irctest.controllers.anope_services \
 		-m 'services' \
-		-k '$(INSPIRCD_SELECTORS) $(ANOPE_SELECTORS)'
+		-k '$(INSPIRCD_SELECTORS)'
 
 ircu2:
 	$(PYTEST) $(PYTEST_ARGS) \
 		--controller=irctest.controllers.ircu2 \
 		-m 'not services and not IRCv3' \
-		-n 10 \
+		-n 4 \
 		-k '$(IRCU2_SELECTORS)'
 
+nefarious:
+	$(PYTEST) $(PYTEST_ARGS) \
+		--controller=irctest.controllers.nefarious \
+		-m 'not services' \
+		-n 4 \
+		-k '$(NEFARIOUS_SELECTORS)'
+
 snircd:
 	$(PYTEST) $(PYTEST_ARGS) \
 		--controller=irctest.controllers.snircd \
 		-m 'not services and not IRCv3' \
-		-n 10 \
+		-n 4 \
 		-k '$(SNIRCD_SELECTORS)'
 
 irc2:
 	$(PYTEST) $(PYTEST_ARGS) \
 		--controller=irctest.controllers.irc2 \
 		-m 'not services and not IRCv3' \
-		-n 10 \
+		-n 4 \
 		-k '$(IRC2_SELECTORS)'
 
 limnoria:
@@ -275,14 +218,14 @@ mammon:
 plexus4:
 	$(PYTEST) $(PYTEST_ARGS) \
 		--controller irctest.controllers.plexus4 \
-		-m 'not services' \
+		--services-controller=irctest.controllers.anope_services \
 		-k "$(PLEXUS4_SELECTORS)"
 
 ngircd:
 	$(PYTEST) $(PYTEST_ARGS) \
 		--controller irctest.controllers.ngircd \
 		-m 'not services' \
-		-n 10 \
+		-n 4 \
 		-k "$(NGIRCD_SELECTORS)"
 
 ngircd-anope:
@@ -316,6 +259,8 @@ unrealircd:
 		-m 'not services' \
 		-k '$(UNREALIRCD_SELECTORS)'
 
+unrealircd-5: unrealircd
+
 unrealircd-atheme:
 	$(PYTEST) $(PYTEST_ARGS) \
 		--controller=irctest.controllers.unrealircd \
@@ -328,4 +273,11 @@ unrealircd-anope:
 		--controller=irctest.controllers.unrealircd \
 		--services-controller=irctest.controllers.anope_services \
 		-m 'services' \
-		-k '$(UNREALIRCD_SELECTORS) $(ANOPE_SELECTORS)'
+		-k '$(UNREALIRCD_SELECTORS)'
+
+unrealircd-dlk:
+	pifpaf run mysql -- $(PYTEST) $(PYTEST_ARGS) \
+		--controller=irctest.controllers.unrealircd \
+		--services-controller=irctest.controllers.dlk_services \
+		-m 'services' \
+		-k '$(UNREALIRCD_SELECTORS)'

README.md

@@ -18,11 +18,11 @@ have no side effect.
 Install irctest and dependencies:
 
 ```
+sudo apt install faketime  # Optional, but greatly speeds up irctest/server_tests/list.py
 cd ~
 git clone https://github.com/ProgVal/irctest.git
 cd irctest
 pip3 install --user -r requirements.txt
-python3 setup.py install --user
 ```
 
 Add `~/.local/bin/` (and/or `~/go/bin/` for Ergo)
@@ -110,8 +110,11 @@ cd /tmp/
 git clone https://github.com/inspircd/inspircd.git
 cd inspircd
 
-# optional, makes tests run considerably faster
-patch src/inspircd.cpp < ~/irctest/inspircd_mainloop.patch
+# Optional, makes tests run considerably faster. Pick one depending on the InspIRCd version:
+# on Insp3 <= 3.16.0 and Insp4 <= 4.0.0a21:
+patch src/inspircd.cpp < ~/irctest/patches/inspircd_mainloop.patch
+# on Insp3 >= 3.17.0 and Insp4 >= 4.0.0a22:
+export CXXFLAGS=-DINSPIRCD_UNLIMITED_MAINLOOP
 
 ./configure --prefix=$HOME/.local/ --development
 make -j 4

conftest.py

@@ -106,7 +106,13 @@ def pytest_collection_modifyitems(session, config, items):
         assert isinstance(item, _pytest.python.Function)
 
         # unittest-style test functions have the node of UnitTest class as parent
-        assert isinstance(item.parent, _pytest.python.Instance)
+        assert isinstance(
+            item.parent,
+            (
+                _pytest.python.Class,  # pytest >= 7.0.0
+                _pytest.python.Instance,  # pytest < 7.0.0
+            ),
+        )
 
         # and that node references the UnitTest class
         assert issubclass(item.parent.cls, _IrcTestCase)

data/nefarious/ircd.pem

@@ -0,0 +1,83 @@
+-----BEGIN PRIVATE KEY-----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+Zz6fKNnRA7A4fFap2hF4TSP/UF12b4ulQ8FfcMMTFszWko5M6fWFuCeWfNbyXML5
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+SD0KZtS7SLzUYat8WcuoSubh5Eb2hHtrsnLrSOTnwQUO61f4gCRm2sEqHYsOAd7+
+mNe1jfil0UBVqqL9GBcGYJkc5+DHgUlJQaxMV+4YLt8fD0KfZEnHaDAYX3kUdz+p
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+KEoL5sOD69sLu3TpnIQz73u9an9W/f2f7rsGwmCcR9RdYGV29ltwfBvOm0FnPQio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+-----END PRIVATE KEY-----
+-----BEGIN CERTIFICATE-----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+CA0zd1DTfjRwpAnT5P4sj4mpjLyRBumeeVGpCZhUxfKpFjIB2AnlgxrU+LPq5c9R
+ZZ9Q5oeLxjRPjpqBeWwgnbjXstQCL9g0U7SsEemsv+zmvG5COhAmG5Wce/65ILlg
+450H4bcn1ul0xvxz9hat6tqEZry3HcNE/CGDT+tXuhHpqOXkY1/c78C0QbWjWodR
+tCvlXW00a+7TlEhNr4XBNdqtIQfYS9K9yiVVNfZLPEsN/SA3BGXmrr+du1/E4Ria
+CkVpmBdJsVu5eMaUj1arsCqI4fwHzljtojJe/pCzZBVkOaSWQEQ+LL4iVnMas68m
+qyshtNf4KNiM55OQmyTiFHMTIxCtdEcHaR3mUxR7GrIhc/bxyxUUBtMAuUX0Kjs=
+-----END CERTIFICATE-----

irctest/basecontrollers.py

@@ -1,13 +1,27 @@
 from __future__ import annotations
 
 import dataclasses
+import multiprocessing
 import os
+from pathlib import Path
 import shutil
 import socket
 import subprocess
 import tempfile
+import textwrap
 import time
-from typing import IO, Any, Callable, Dict, List, Optional, Set, Tuple, Type
+from typing import (
+    IO,
+    Any,
+    Callable,
+    Dict,
+    List,
+    MutableMapping,
+    Optional,
+    Set,
+    Tuple,
+    Type,
+)
 
 import irctest
 
@@ -56,9 +70,43 @@ class _BaseController:
     supported_sasl_mechanisms: Set[str]
     proc: Optional[subprocess.Popen]
 
+    _used_ports: Set[Tuple[str, int]]
+    """``(hostname, port))`` used by this controller."""
+    # the following need to be shared between processes in case we are running in
+    # parallel (with pytest-xdist)
+    # The dicts are used as a set of (hostname, port), because _manager.set() doesn't
+    # exist.
+    _manager = multiprocessing.Manager()
+    _port_lock = _manager.Lock()
+    """Lock for access to ``_all_used_ports`` and ``_available_ports``."""
+    _all_used_ports: MutableMapping[Tuple[str, int], None] = _manager.dict()
+    """``(hostname, port)`` used by all controllers."""
+    _available_ports: MutableMapping[Tuple[str, int], None] = _manager.dict()
+    """``(hostname, port)`` available to any controller."""
+
     def __init__(self, test_config: TestCaseControllerConfig):
         self.test_config = test_config
         self.proc = None
+        self._used_ports = set()
+
+    def get_hostname_and_port(self) -> Tuple[str, int]:
+        with self._port_lock:
+            try:
+                # try to get a known available port
+                ((hostname, port), _) = self._available_ports.popitem()
+            except KeyError:
+                # if there aren't any, iterate while we get a fresh one.
+                while True:
+                    (hostname, port) = find_hostname_and_port()
+                    if (hostname, port) not in self._all_used_ports:
+                        # double-checking in self._used_ports to prevent collisions
+                        # between controllers starting at the same time.
+                        break
+
+            # Make this port unavailable to other processes
+            self._all_used_ports[(hostname, port)] = None
+
+        return (hostname, port)
 
     def check_is_alive(self) -> None:
         assert self.proc
@@ -82,12 +130,17 @@ class _BaseController:
         if self.proc:
             self.kill_proc()
 
+        # move this controller's ports from _all_used_ports to _available_ports
+        for hostname, port in self._used_ports:
+            del self._all_used_ports[(hostname, port)]
+            self._available_ports[(hostname, port)] = None
+
 
 class DirectoryBasedController(_BaseController):
     """Helper for controllers whose software configuration is based on an
     arbitrary directory."""
 
-    directory: Optional[str]
+    directory: Optional[Path]
 
     def __init__(self, test_config: TestCaseControllerConfig):
         super().__init__(test_config)
@@ -110,22 +163,21 @@ class DirectoryBasedController(_BaseController):
         """Open a file in the configuration directory."""
         assert self.directory
         if os.sep in name:
-            dir_ = os.path.join(self.directory, os.path.dirname(name))
-            if not os.path.isdir(dir_):
-                os.makedirs(dir_)
-            assert os.path.isdir(dir_)
-        return open(os.path.join(self.directory, name), mode)
+            dir_ = self.directory / os.path.dirname(name)
+            dir_.mkdir(parents=True, exist_ok=True)
+            assert dir_.is_dir()
+        return (self.directory / name).open(mode)
 
     def create_config(self) -> None:
         if not self.directory:
-            self.directory = tempfile.mkdtemp()
+            self.directory = Path(tempfile.mkdtemp())
 
     def gen_ssl(self) -> None:
         assert self.directory
-        self.csr_path = os.path.join(self.directory, "ssl.csr")
-        self.key_path = os.path.join(self.directory, "ssl.key")
-        self.pem_path = os.path.join(self.directory, "ssl.pem")
-        self.dh_path = os.path.join(self.directory, "dh.pem")
+        self.csr_path = self.directory / "ssl.csr"
+        self.key_path = self.directory / "ssl.key"
+        self.pem_path = self.directory / "ssl.pem"
+        self.dh_path = self.directory / "dh.pem"
         subprocess.check_output(
             [
                 self.openssl_bin,
@@ -156,10 +208,18 @@ class DirectoryBasedController(_BaseController):
             ],
             stderr=subprocess.DEVNULL,
         )
-        subprocess.check_output(
-            [self.openssl_bin, "dhparam", "-out", self.dh_path, "128"],
-            stderr=subprocess.DEVNULL,
-        )
+        with self.dh_path.open("w") as fd:
+            fd.write(
+                textwrap.dedent(
+                    """
+                    -----BEGIN DH PARAMETERS-----
+                    MIGHAoGBAJICSyQAiLj1fw8b5xELcnpqBQ+wvOyKgim4IetWOgZnRQFkTgOeoRZD
+                    HksACRFJL/EqHxDKcy/2Ghwr2axhNxSJ+UOBmraP3WfodV/fCDPnZ+XnI9fjHsIr
+                    rjisPMqomjXeiTB1UeAHvLUmCK4yx6lpAJsCYwJjsqkycUfHiy1bAgEC
+                    -----END DH PARAMETERS-----
+                    """
+                )
+            )
 
 
 class BaseClientController(_BaseController):
@@ -189,8 +249,9 @@ class BaseServerController(_BaseController):
     """Character used for the 'mute' extban"""
     nickserv = "NickServ"
 
-    def get_hostname_and_port(self) -> Tuple[str, int]:
-        return find_hostname_and_port()
+    def __init__(self, *args: Any, **kwargs: Any):
+        super().__init__(*args, **kwargs)
+        self.faketime_enabled = False
 
     def run(
         self,
@@ -200,8 +261,7 @@ class BaseServerController(_BaseController):
         password: Optional[str],
         ssl: bool,
         run_services: bool,
-        valid_metadata_keys: Optional[Set[str]],
-        invalid_metadata_keys: Optional[Set[str]],
+        faketime: Optional[str],
     ) -> None:
         raise NotImplementedError()
 
@@ -217,6 +277,7 @@ class BaseServerController(_BaseController):
             raise NotImplementedByController("account registration")
 
     def wait_for_port(self) -> None:
+        started_at = time.time()
         while not self.port_open:
             self.check_is_alive()
             time.sleep(self._port_wait_interval)
@@ -239,11 +300,16 @@ class BaseServerController(_BaseController):
                     # ircu2 cuts the connection without a message if registration
                     # is not complete.
                     pass
+                except socket.timeout:
+                    # irc2 just keeps it open
+                    pass
 
                 c.close()
                 self.port_open = True
-            except Exception:
-                continue
+            except ConnectionRefusedError:
+                if time.time() - started_at >= 60:
+                    # waited for 60 seconds, giving up
+                    raise
 
     def wait_for_services(self) -> None:
         assert self.services_controller
@@ -290,10 +356,11 @@ class BaseServicesController(_BaseController):
                 c.sendLine("PONG :" + msg.params[0])
         c.getMessages()
 
-        timeout = time.time() + 5
+        timeout = time.time() + 3
         while True:
-            c.sendLine(f"PRIVMSG {self.server_controller.nickserv} :HELP")
-            msgs = self.getNickServResponse(c)
+            c.sendLine(f"PRIVMSG {self.server_controller.nickserv} :help")
+
+            msgs = self.getNickServResponse(c, timeout=1)
             for msg in msgs:
                 if msg.command == "401":
                     # NickServ not available yet
@@ -319,11 +386,12 @@ class BaseServicesController(_BaseController):
         c.disconnect()
         self.services_up = True
 
-    def getNickServResponse(self, client: Any) -> List[Message]:
+    def getNickServResponse(self, client: Any, timeout: int = 0) -> List[Message]:
         """Wrapper aroung getMessages() that waits longer, because NickServ
         is queried asynchronously."""
         msgs: List[Message] = []
-        while not msgs:
+        start_time = time.time()
+        while not msgs and (not timeout or start_time + timeout > time.time()):
             time.sleep(0.05)
             msgs = client.getMessages()
         return msgs

irctest/cases.py

@@ -69,6 +69,30 @@ TController = TypeVar("TController", bound=basecontrollers._BaseController)
 T = TypeVar("T")
 
 
+def retry(f: TCallable) -> TCallable:
+    """Retry the function if it raises ConnectionClosed; as a workaround for flaky
+    connection, such as::
+
+        1: connects to server.
+        1 -> S: NICK foo
+        1 -> S: USER username * * :Realname
+        S -> 1: :My.Little.Server NOTICE * :*** Found your hostname (cached)
+        S -> 1: :My.Little.Server NOTICE * :*** Checking Ident
+        S -> 1: :My.Little.Server NOTICE * :*** No Ident response
+        S -> 1: ERROR :Closing Link: cpu-pool.com (Use a different port)
+    """
+
+    @functools.wraps(f)
+    def newf(*args, **kwargs):  # type: ignore
+        try:
+            return f(*args, **kwargs)
+        except ConnectionClosed:
+            time.sleep(1)
+            return f(*args, **kwargs)
+
+    return newf  # type: ignore
+
+
 class ChannelJoinException(Exception):
     def __init__(self, code: str, params: List[str]):
         super().__init__(f"Failed to join channel ({code}): {params}")
@@ -149,7 +173,7 @@ class _IrcTestCase(Generic[TController]):
     ) -> Optional[str]:
         """Returns an error message if the message doesn't match the given arguments,
         or None if it matches."""
-        for (key, value) in kwargs.items():
+        for key, value in kwargs.items():
             if getattr(msg, key) != value:
                 fail_msg = (
                     fail_msg or "expected {param} to be {expects}, got {got}: {msg}"
@@ -162,7 +186,7 @@ class _IrcTestCase(Generic[TController]):
                     msg=msg,
                 )
 
-        if prefix and not patma.match_string(msg.prefix, prefix):
+        if prefix is not None and not patma.match_string(msg.prefix, prefix):
             fail_msg = (
                 fail_msg or "expected prefix to match {expects}, got {got}: {msg}"
             )
@@ -170,7 +194,7 @@ class _IrcTestCase(Generic[TController]):
                 *extra_format, got=msg.prefix, expects=prefix, msg=msg
             )
 
-        if params and not patma.match_list(list(msg.params), params):
+        if params is not None and not patma.match_list(list(msg.params), params):
             fail_msg = (
                 fail_msg or "expected params to match {expects}, got {got}: {msg}"
             )
@@ -178,11 +202,11 @@ class _IrcTestCase(Generic[TController]):
                 *extra_format, got=msg.params, expects=params, msg=msg
             )
 
-        if tags and not patma.match_dict(msg.tags, tags):
+        if tags is not None and not patma.match_dict(msg.tags, tags):
             fail_msg = fail_msg or "expected tags to match {expects}, got {got}: {msg}"
             return fail_msg.format(*extra_format, got=msg.tags, expects=tags, msg=msg)
 
-        if nick:
+        if nick is not None:
             got_nick = msg.prefix.split("!")[0] if msg.prefix else None
             if nick != got_nick:
                 fail_msg = (
@@ -327,8 +351,8 @@ class BaseClientTestCase(_IrcTestCase[basecontrollers.BaseClientController]):
     nick: Optional[str] = None
     user: Optional[List[str]] = None
     server: socket.socket
-    protocol_version = Optional[str]
-    acked_capabilities = Optional[Set[str]]
+    protocol_version: Optional[str]
+    acked_capabilities: Optional[Set[str]]
 
     __new__ = object.__new__  # pytest won't collect Generic[] subclasses otherwise
 
@@ -424,7 +448,9 @@ class BaseClientTestCase(_IrcTestCase[basecontrollers.BaseClientController]):
             print("{:.3f} S: {}".format(time.time(), line.strip()))
 
     def readCapLs(
-        self, auth: Optional[Authentication] = None, tls_config: tls.TlsConfig = None
+        self,
+        auth: Optional[Authentication] = None,
+        tls_config: Optional[tls.TlsConfig] = None,
     ) -> None:
         (hostname, port) = self.server.getsockname()
         self.controller.run(
@@ -434,9 +460,9 @@ class BaseClientTestCase(_IrcTestCase[basecontrollers.BaseClientController]):
         m = self.getMessage()
         self.assertEqual(m.command, "CAP", "First message is not CAP LS.")
         if m.params == ["LS"]:
-            self.protocol_version = 301
+            self.protocol_version = "301"
         elif m.params == ["LS", "302"]:
-            self.protocol_version = 302
+            self.protocol_version = "302"
         elif m.params == ["END"]:
             self.protocol_version = None
         else:
@@ -503,11 +529,15 @@ class BaseServerTestCase(
 
     password: Optional[str] = None
     ssl = False
-    valid_metadata_keys: Set[str] = set()
-    invalid_metadata_keys: Set[str] = set()
     server_support: Optional[Dict[str, Optional[str]]]
     run_services = False
 
+    faketime: Optional[str] = None
+    """If not None and the controller supports it and libfaketime is available,
+    runs the server using faketime and this value set as the $FAKETIME env variable.
+    Tests must check ``self.controller.faketime_enabled`` is True before
+    relying on this."""
+
     __new__ = object.__new__  # pytest won't collect Generic[] subclasses otherwise
 
     def setUp(self) -> None:
@@ -518,10 +548,9 @@ class BaseServerTestCase(
             self.hostname,
             self.port,
             password=self.password,
-            valid_metadata_keys=self.valid_metadata_keys,
-            invalid_metadata_keys=self.invalid_metadata_keys,
             ssl=self.ssl,
             run_services=self.run_services,
+            faketime=self.faketime,
         )
         self.clients: Dict[TClientName, client_mock.ClientMock] = {}
 
@@ -539,13 +568,10 @@ class BaseServerTestCase(
         if self.run_services:
             self.controller.wait_for_services()
         if not name:
-            new_name: int = (
-                max(
-                    [int(name) for name in self.clients if isinstance(name, (int, str))]
-                    + [0]
-                )
-                + 1
-            )
+            used_ids: List[int] = [
+                int(name) for name in self.clients if isinstance(name, (int, str))
+            ]
+            new_name = max(used_ids + [0]) + 1
             name = cast(TClientName, new_name)
         show_io = show_io if show_io is not None else self.show_io
         self.clients[name] = client_mock.ClientMock(name=name, show_io=show_io)
@@ -647,10 +673,21 @@ class BaseServerTestCase(
             else:
                 raise
 
+    def authenticateClient(
+        self, client: TClientName, account: str, password: str
+    ) -> None:
+        self.sendLine(client, "AUTHENTICATE PLAIN")
+        m = self.getRegistrationMessage(client)
+        self.assertMessageMatch(m, command="AUTHENTICATE", params=["+"])
+        self.sendLine(client, sasl_plain_blob(account, password))
+        m = self.getRegistrationMessage(client)
+        self.assertIn(m.command, ["900", "903"], str(m))
+
+    @retry
     def connectClient(
         self,
         nick: str,
-        name: TClientName = None,
+        name: Optional[TClientName] = None,
         capabilities: Optional[List[str]] = None,
         skip_if_cap_nak: bool = False,
         show_io: Optional[bool] = None,
@@ -665,17 +702,12 @@ class BaseServerTestCase(
         client = self.addClient(name, show_io=show_io)
         if capabilities:
             self.sendLine(client, "CAP LS 302")
-            m = self.getRegistrationMessage(client)
+            self.getCapLs(client)
             self.requestCapabilities(client, capabilities, skip_if_cap_nak)
         if password is not None:
             if "sasl" not in (capabilities or ()):
-                raise ValueError("Used 'password' option without sasl capbilitiy")
-            self.sendLine(client, "AUTHENTICATE PLAIN")
-            m = self.getRegistrationMessage(client)
-            self.assertMessageMatch(m, command="AUTHENTICATE", params=["+"])
-            self.sendLine(client, sasl_plain_blob(account or nick, password))
-            m = self.getRegistrationMessage(client)
-            self.assertIn(m.command, ["900", "903"], str(m))
+                raise ValueError("Used 'password' option without sasl capbility")
+            self.authenticateClient(client, account or nick, password)
 
         self.sendLine(client, "NICK {}".format(nick))
         self.sendLine(client, "USER %s * * :Realname" % (ident,))
@@ -700,6 +732,12 @@ class BaseServerTestCase(
                         self.server_support[param] = None
             welcome.append(m)
 
+        self.targmax: Dict[str, Optional[str]] = dict(  # type: ignore[assignment]
+            item.split(":", 1)
+            for item in (self.server_support.get("TARGMAX") or "").split(",")
+            if item
+        )
+
         return welcome
 
     def joinClient(self, client: TClientName, channel: str) -> None:
@@ -730,50 +768,55 @@ class BaseServerTestCase(
                     raise ChannelJoinException(msg.command, msg.params)
 
 
-_TSelf = TypeVar("_TSelf", bound="OptionalityHelper")
+_TSelf = TypeVar("_TSelf", bound="_IrcTestCase")
 _TReturn = TypeVar("_TReturn")
 
 
-class OptionalityHelper(Generic[TController]):
-    controller: TController
-
-    def checkSaslSupport(self) -> None:
-        if self.controller.supported_sasl_mechanisms:
-            return
-        raise runner.NotImplementedByController("SASL")
-
-    def checkMechanismSupport(self, mechanism: str) -> None:
-        if mechanism in self.controller.supported_sasl_mechanisms:
-            return
-        raise runner.OptionalSaslMechanismNotSupported(mechanism)
-
-    @staticmethod
-    def skipUnlessHasMechanism(
-        mech: str,
-    ) -> Callable[[Callable[..., _TReturn]], Callable[..., _TReturn]]:
-        # Just a function returning a function that takes functions and
-        # returns functions, nothing to see here.
-        # If Python didn't have such an awful syntax for callables, it would be:
-        # str -> ((TSelf -> TReturn) -> (TSelf -> TReturn))
-        def decorator(f: Callable[..., _TReturn]) -> Callable[..., _TReturn]:
-            @functools.wraps(f)
-            def newf(self: _TSelf, *args: Any, **kwargs: Any) -> _TReturn:
-                self.checkMechanismSupport(mech)
-                return f(self, *args, **kwargs)
-
-            return newf
-
-        return decorator
-
-    @staticmethod
-    def skipUnlessHasSasl(f: Callable[..., _TReturn]) -> Callable[..., _TReturn]:
+def skipUnlessHasMechanism(
+    mech: str,
+) -> Callable[[Callable[..., _TReturn]], Callable[..., _TReturn]]:
+    # Just a function returning a function that takes functions and
+    # returns functions, nothing to see here.
+    # If Python didn't have such an awful syntax for callables, it would be:
+    # str -> ((TSelf -> TReturn) -> (TSelf -> TReturn))
+    def decorator(f: Callable[..., _TReturn]) -> Callable[..., _TReturn]:
         @functools.wraps(f)
         def newf(self: _TSelf, *args: Any, **kwargs: Any) -> _TReturn:
-            self.checkSaslSupport()
+            if mech not in self.controller.supported_sasl_mechanisms:
+                raise runner.OptionalSaslMechanismNotSupported(mech)
             return f(self, *args, **kwargs)
 
         return newf
 
+    return decorator
+
+
+def xfailIf(
+    condition: Callable[..., bool], reason: str
+) -> Callable[[Callable[..., _TReturn]], Callable[..., _TReturn]]:
+    # Works about the same as skipUnlessHasMechanism
+    def decorator(f: Callable[..., _TReturn]) -> Callable[..., _TReturn]:
+        @functools.wraps(f)
+        def newf(self: _TSelf, *args: Any, **kwargs: Any) -> _TReturn:
+            if condition(self):
+                try:
+                    return f(self, *args, **kwargs)
+                except Exception:
+                    pytest.xfail(reason)
+                    assert False  # make mypy happy
+            else:
+                return f(self, *args, **kwargs)
+
+        return newf
+
+    return decorator
+
+
+def xfailIfSoftware(
+    names: List[str], reason: str
+) -> Callable[[Callable[..., _TReturn]], Callable[..., _TReturn]]:
+    return xfailIf(lambda testcase: testcase.controller.software_name in names, reason)
+
 
 def mark_services(cls: TClass) -> TClass:
     cls.run_services = True

irctest/client_tests/cap.py

@@ -1,3 +1,5 @@
+"""Format of ``CAP LS`` sent by IRCv3 clients."""
+
 from irctest import cases
 from irctest.irc_utils.message_parser import Message
 

irctest/client_tests/sasl.py

@@ -1,3 +1,8 @@
+"""SASL authentication from clients, for all known mechanisms.
+
+For now, only `SASLv3.1 <https://ircv3.net/specs/extensions/sasl-3.1>`_
+is tested, not `SASLv3.2 <https://ircv3.net/specs/extensions/sasl-3.2>`_."""
+
 import base64
 
 import pytest
@@ -34,8 +39,8 @@ class IdentityHash:
         return self._data
 
 
-class SaslTestCase(cases.BaseClientTestCase, cases.OptionalityHelper):
-    @cases.OptionalityHelper.skipUnlessHasMechanism("PLAIN")
+class SaslTestCase(cases.BaseClientTestCase):
+    @cases.skipUnlessHasMechanism("PLAIN")
     def testPlain(self):
         """Test PLAIN authentication with correct username/password."""
         auth = authentication.Authentication(
@@ -55,7 +60,8 @@ class SaslTestCase(cases.BaseClientTestCase, cases.OptionalityHelper):
         m = self.negotiateCapabilities(["sasl"], False)
         self.assertEqual(m, Message({}, None, "CAP", ["END"]))
 
-    @cases.OptionalityHelper.skipUnlessHasMechanism("PLAIN")
+    @cases.skipUnlessHasMechanism("PLAIN")
+    @cases.xfailIfSoftware(["Sopel"], "Sopel requests SASL PLAIN even if not available")
     def testPlainNotAvailable(self):
         """`sasl=EXTERNAL` is advertized, whereas the client is configured
         to use PLAIN.
@@ -84,8 +90,9 @@ class SaslTestCase(cases.BaseClientTestCase, cases.OptionalityHelper):
         m = self.getMessage()
         self.assertMessageMatch(m, command="CAP")
 
-    @cases.OptionalityHelper.skipUnlessHasMechanism("PLAIN")
-    def testPlainLarge(self):
+    @pytest.mark.parametrize("pattern", ["barbaz", "éèà"])
+    @cases.skipUnlessHasMechanism("PLAIN")
+    def testPlainLarge(self, pattern):
         """Test the client splits large AUTHENTICATE messages whose payload
         is not a multiple of 400.
         <http://ircv3.net/specs/extensions/sasl-3.1.html#the-authenticate-command>
@@ -94,10 +101,10 @@ class SaslTestCase(cases.BaseClientTestCase, cases.OptionalityHelper):
         auth = authentication.Authentication(
             mechanisms=[authentication.Mechanisms.plain],
             username="foo",
-            password="bar" * 200,
+            password=pattern * 100,
         )
         authstring = base64.b64encode(
-            b"\x00".join([b"foo", b"foo", b"bar" * 200])
+            b"\x00".join([b"foo", b"foo", pattern.encode() * 100])
         ).decode()
         m = self.negotiateCapabilities(["sasl"], auth=auth)
         self.assertEqual(m, Message({}, None, "AUTHENTICATE", ["PLAIN"]))
@@ -113,8 +120,9 @@ class SaslTestCase(cases.BaseClientTestCase, cases.OptionalityHelper):
         m = self.negotiateCapabilities(["sasl"], False)
         self.assertEqual(m, Message({}, None, "CAP", ["END"]))
 
-    @cases.OptionalityHelper.skipUnlessHasMechanism("PLAIN")
-    def testPlainLargeMultiple(self):
+    @cases.skipUnlessHasMechanism("PLAIN")
+    @pytest.mark.parametrize("pattern", ["quux", "éè"])
+    def testPlainLargeMultiple(self, pattern):
         """Test the client splits large AUTHENTICATE messages whose payload
         is a multiple of 400.
         <http://ircv3.net/specs/extensions/sasl-3.1.html#the-authenticate-command>
@@ -123,10 +131,10 @@ class SaslTestCase(cases.BaseClientTestCase, cases.OptionalityHelper):
         auth = authentication.Authentication(
             mechanisms=[authentication.Mechanisms.plain],
             username="foo",
-            password="quux" * 148,
+            password=pattern * 148,
         )
         authstring = base64.b64encode(
-            b"\x00".join([b"foo", b"foo", b"quux" * 148])
+            b"\x00".join([b"foo", b"foo", pattern.encode() * 148])
         ).decode()
         m = self.negotiateCapabilities(["sasl"], auth=auth)
         self.assertEqual(m, Message({}, None, "AUTHENTICATE", ["PLAIN"]))
@@ -143,7 +151,7 @@ class SaslTestCase(cases.BaseClientTestCase, cases.OptionalityHelper):
         self.assertEqual(m, Message({}, None, "CAP", ["END"]))
 
     @pytest.mark.skipif(ecdsa is None, reason="python3-ecdsa is not available")
-    @cases.OptionalityHelper.skipUnlessHasMechanism("ECDSA-NIST256P-CHALLENGE")
+    @cases.skipUnlessHasMechanism("ECDSA-NIST256P-CHALLENGE")
     def testEcdsa(self):
         """Test ECDSA authentication."""
         auth = authentication.Authentication(
@@ -177,7 +185,7 @@ class SaslTestCase(cases.BaseClientTestCase, cases.OptionalityHelper):
         m = self.negotiateCapabilities(["sasl"], False)
         self.assertEqual(m, Message({}, None, "CAP", ["END"]))
 
-    @cases.OptionalityHelper.skipUnlessHasMechanism("SCRAM-SHA-256")
+    @cases.skipUnlessHasMechanism("SCRAM-SHA-256")
     def testScram(self):
         """Test SCRAM-SHA-256 authentication."""
         auth = authentication.Authentication(
@@ -219,7 +227,7 @@ class SaslTestCase(cases.BaseClientTestCase, cases.OptionalityHelper):
         self.assertEqual(m.command, "AUTHENTICATE", m)
         self.assertEqual(m.params, ["+"], m)
 
-    @cases.OptionalityHelper.skipUnlessHasMechanism("SCRAM-SHA-256")
+    @cases.skipUnlessHasMechanism("SCRAM-SHA-256")
     def testScramBadPassword(self):
         """Test SCRAM-SHA-256 authentication with a bad password."""
         auth = authentication.Authentication(
@@ -254,8 +262,8 @@ class SaslTestCase(cases.BaseClientTestCase, cases.OptionalityHelper):
             authenticator.response(msg)
 
 
-class Irc302SaslTestCase(cases.BaseClientTestCase, cases.OptionalityHelper):
-    @cases.OptionalityHelper.skipUnlessHasMechanism("PLAIN")
+class Irc302SaslTestCase(cases.BaseClientTestCase):
+    @cases.skipUnlessHasMechanism("PLAIN")
     def testPlainNotAvailable(self):
         """Test the client does not try to authenticate using a mechanism the
         server does not advertise.

irctest/client_tests/tls.py

@@ -1,6 +1,10 @@
+"""Clients should validate certificates; either with a CA or fingerprints."""
+
 import socket
 import ssl
 
+import pytest
+
 from irctest import cases, runner, tls
 from irctest.exceptions import ConnectionClosed
 from irctest.patma import ANYSTR
@@ -136,7 +140,7 @@ class TlsTestCase(cases.BaseClientTestCase):
             self.getMessage()
 
 
-class StsTestCase(cases.BaseClientTestCase, cases.OptionalityHelper):
+class StsTestCase(cases.BaseClientTestCase):
     def setUp(self):
         super().setUp()
         self.insecure_server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
@@ -148,7 +152,8 @@ class StsTestCase(cases.BaseClientTestCase, cases.OptionalityHelper):
         super().tearDown()
 
     @cases.mark_capabilities("sts")
-    def testSts(self):
+    @pytest.mark.parametrize("portOnSecure", [False, True])
+    def testSts(self, portOnSecure):
         if not self.controller.supports_sts:
             raise runner.CapabilityNotSupported("sts")
         tls_config = tls.TlsConfig(
@@ -176,10 +181,12 @@ class StsTestCase(cases.BaseClientTestCase, cases.OptionalityHelper):
         # and reconnect securely on the stated port."
         self.acceptClient(tls_cert=GOOD_CERT, tls_key=GOOD_KEY)
 
-        # Send the STS policy, over secure connection this time
-        self.sendLine(
-            "CAP * LS :sts=duration=10,port={}".format(self.server.getsockname()[1])
-        )
+        # Send the STS policy, over secure connection this time.
+        if portOnSecure:
+            # Should be ignored
+            self.sendLine("CAP * LS :sts=duration=10,port=12345")
+        else:
+            self.sendLine("CAP * LS :sts=duration=10")
 
         # Make the client reconnect. It should reconnect to the secure server.
         self.sendLine("ERROR :closing link")

irctest/controllers/anope_services.py

@@ -1,4 +1,4 @@
-import os
+from pathlib import Path
 import shutil
 import subprocess
 from typing import Type
@@ -73,6 +73,8 @@ module {{ name = "ns_cert" }}
 class AnopeController(BaseServicesController, DirectoryBasedController):
     """Collaborator for server controllers that rely on Anope"""
 
+    software_name = "Anope"
+
     def run(self, protocol: str, server_hostname: str, server_port: int) -> None:
         self.create_config()
 
@@ -99,14 +101,11 @@ class AnopeController(BaseServicesController, DirectoryBasedController):
             pass
 
         assert self.directory
+        services_path = shutil.which("services")
+        assert services_path
 
         # Config and code need to be in the same directory, *obviously*
-        os.symlink(
-            os.path.join(
-                os.path.dirname(shutil.which("services")), "..", "lib"  # type: ignore
-            ),
-            os.path.join(self.directory, "lib"),
-        )
+        (self.directory / "lib").symlink_to(Path(services_path).parent.parent / "lib")
 
         self.proc = subprocess.Popen(
             [

irctest/controllers/atheme_services.py

@@ -1,4 +1,3 @@
-import os
 import subprocess
 from typing import Optional, Type
 
@@ -56,6 +55,8 @@ saslserv {{
 class AthemeController(BaseServicesController, DirectoryBasedController):
     """Mixin for server controllers that rely on Atheme"""
 
+    software_name = "Atheme"
+
     def run(self, protocol: str, server_hostname: str, server_port: int) -> None:
         self.create_config()
 
@@ -79,11 +80,11 @@ class AthemeController(BaseServicesController, DirectoryBasedController):
                 "atheme-services",
                 "-n",  # don't fork
                 "-c",
-                os.path.join(self.directory, "services.conf"),
+                self.directory / "services.conf",
                 "-l",
                 f"/tmp/services-{server_port}.log",
                 "-p",
-                os.path.join(self.directory, "services.pid"),
+                self.directory / "services.pid",
                 "-D",
                 self.directory,
             ],

irctest/controllers/bahamut.py

@@ -1,14 +1,9 @@
-import os
+from pathlib import Path
 import shutil
 import subprocess
 from typing import Optional, Set, Type
 
-from irctest.basecontrollers import (
-    BaseServerController,
-    DirectoryBasedController,
-    NotImplementedByController,
-)
-from irctest.irc_utils.junkdrawer import find_hostname_and_port
+from irctest.basecontrollers import BaseServerController, DirectoryBasedController
 
 TEMPLATE_CONFIG = """
 global {{
@@ -80,6 +75,19 @@ oper {{
 """
 
 
+def initialize_entropy(directory: Path) -> None:
+    # https://github.com/DALnet/bahamut/blob/7fc039d403f66a954225c5dc4ad1fe683aedd794/include/dh.h#L35-L38
+    nb_rand_bytes = 512 // 8
+    # https://github.com/DALnet/bahamut/blob/7fc039d403f66a954225c5dc4ad1fe683aedd794/src/dh.c#L186
+    entropy_file_size = nb_rand_bytes * 4
+
+    # Not actually random; but we don't care.
+    entropy = b"\x00" * entropy_file_size
+
+    with (directory / ".ircd.entropy").open("wb") as fd:
+        fd.write(entropy)
+
+
 class BahamutController(BaseServerController, DirectoryBasedController):
     software_name = "Bahamut"
     supported_sasl_mechanisms: Set[str] = set()
@@ -99,20 +107,14 @@ class BahamutController(BaseServerController, DirectoryBasedController):
         password: Optional[str],
         ssl: bool,
         run_services: bool,
-        valid_metadata_keys: Optional[Set[str]] = None,
-        invalid_metadata_keys: Optional[Set[str]] = None,
-        restricted_metadata_keys: Optional[Set[str]] = None,
+        faketime: Optional[str],
     ) -> None:
-        if valid_metadata_keys or invalid_metadata_keys:
-            raise NotImplementedByController(
-                "Defining valid and invalid METADATA keys."
-            )
         assert self.proc is None
         self.port = port
         self.hostname = hostname
         self.create_config()
-        (unused_hostname, unused_port) = find_hostname_and_port()
-        (services_hostname, services_port) = find_hostname_and_port()
+        (unused_hostname, unused_port) = self.get_hostname_and_port()
+        (services_hostname, services_port) = self.get_hostname_and_port()
 
         password_field = "passwd {};".format(password) if password else ""
 
@@ -120,9 +122,14 @@ class BahamutController(BaseServerController, DirectoryBasedController):
 
         assert self.directory
 
+        # Bahamut reads some bytes from /dev/urandom on startup, which causes
+        # GitHub Actions to sometimes freeze and timeout.
+        # This initializes the entropy file so Bahamut does not need to do it itself.
+        initialize_entropy(self.directory)
+
         # they are hardcoded... thankfully Bahamut reads them from the CWD.
-        shutil.copy(self.pem_path, os.path.join(self.directory, "ircd.crt"))
-        shutil.copy(self.key_path, os.path.join(self.directory, "ircd.key"))
+        shutil.copy(self.pem_path, self.directory / "ircd.crt")
+        shutil.copy(self.key_path, self.directory / "ircd.key")
 
         with self.open_file("server.conf") as fd:
             fd.write(
@@ -136,15 +143,21 @@ class BahamutController(BaseServerController, DirectoryBasedController):
                     # pem_path=self.pem_path,
                 )
             )
+
+        if faketime and shutil.which("faketime"):
+            faketime_cmd = ["faketime", "-f", faketime]
+            self.faketime_enabled = True
+        else:
+            faketime_cmd = []
+
         self.proc = subprocess.Popen(
             [
-                # "strace", "-f", "-e", "file",
+                *faketime_cmd,
                 "ircd",
                 "-t",  # don't fork
                 "-f",
-                os.path.join(self.directory, "server.conf"),
+                self.directory / "server.conf",
             ],
-            # stdout=subprocess.DEVNULL,
         )
 
         if run_services:

irctest/controllers/base_hybrid.py

@@ -1,13 +1,8 @@
-import os
+import shutil
 import subprocess
-from typing import Optional, Set
+from typing import Optional
 
-from irctest.basecontrollers import (
-    BaseServerController,
-    DirectoryBasedController,
-    NotImplementedByController,
-)
-from irctest.irc_utils.junkdrawer import find_hostname_and_port
+from irctest.basecontrollers import BaseServerController, DirectoryBasedController
 
 TEMPLATE_SSL_CONFIG = """
     ssl_private_key = "{key_path}";
@@ -41,18 +36,13 @@ class BaseHybridController(BaseServerController, DirectoryBasedController):
         password: Optional[str],
         ssl: bool,
         run_services: bool,
-        valid_metadata_keys: Optional[Set[str]] = None,
-        invalid_metadata_keys: Optional[Set[str]] = None,
+        faketime: Optional[str],
     ) -> None:
-        if valid_metadata_keys or invalid_metadata_keys:
-            raise NotImplementedByController(
-                "Defining valid and invalid METADATA keys."
-            )
         assert self.proc is None
         self.port = port
         self.hostname = hostname
         self.create_config()
-        (services_hostname, services_port) = find_hostname_and_port()
+        (services_hostname, services_port) = self.get_hostname_and_port()
         password_field = 'password = "{}";'.format(password) if password else ""
         if ssl:
             self.gen_ssl()
@@ -73,14 +63,22 @@ class BaseHybridController(BaseServerController, DirectoryBasedController):
                 )
             )
         assert self.directory
+
+        if faketime and shutil.which("faketime"):
+            faketime_cmd = ["faketime", "-f", faketime]
+            self.faketime_enabled = True
+        else:
+            faketime_cmd = []
+
         self.proc = subprocess.Popen(
             [
+                *faketime_cmd,
                 self.binary_name,
                 "-foreground",
                 "-configfile",
-                os.path.join(self.directory, "server.conf"),
+                self.directory / "server.conf",
                 "-pidfile",
-                os.path.join(self.directory, "server.pid"),
+                self.directory / "server.pid",
             ],
             # stderr=subprocess.DEVNULL,
         )

irctest/controllers/charybdis.py

@@ -12,6 +12,9 @@ serverinfo {{
 
 general {{
     throttle_count = 100;  # We need to connect lots of clients quickly
+    # disable throttling for LIST and similar:
+    pace_wait_simple = 0 second;
+    pace_wait = 0 second;
     sasl_service = "SaslServ";
 }};
 

irctest/controllers/dlk_services.py

@@ -0,0 +1,245 @@
+import os
+from pathlib import Path
+import secrets
+import subprocess
+from typing import Optional, Type
+
+import irctest
+from irctest.basecontrollers import BaseServicesController, DirectoryBasedController
+import irctest.cases
+import irctest.runner
+
+TEMPLATE_DLK_CONFIG = """\
+info {{
+    SID "00A";
+    network-name "testnetwork";
+    services-name "services.example.org";
+    admin-email "admin@example.org";
+}}
+
+link {{
+    hostname "{server_hostname}";
+    port "{server_port}";
+    password "password";
+}}
+
+log {{
+    debug "yes";
+}}
+
+sql {{
+    port "3306";
+    username "pifpaf";
+    password "pifpaf";
+    database "pifpaf";
+    sockfile "{mysql_socket}";
+    prefix "{dlk_prefix}";
+}}
+
+wordpress {{
+    prefix "{wp_prefix}";
+}}
+
+"""
+
+TEMPLATE_DLK_WP_CONFIG = """
+<?php
+
+global $wpconfig;
+$wpconfig = [
+
+    "dbprefix" => "{wp_prefix}",
+
+
+    "default_avatar" => "https://valware.uk/wp-content/plugins/ultimate-member/assets/img/default_avatar.jpg",
+    "forumschan" => "#DLK-Support",
+
+];
+"""
+
+TEMPLATE_WP_CONFIG = """
+define( 'DB_NAME', 'pifpaf' );
+define( 'DB_USER', 'pifpaf' );
+define( 'DB_PASSWORD', 'pifpaf' );
+define( 'DB_HOST', 'localhost:{mysql_socket}' );
+define( 'DB_CHARSET', 'utf8' );
+define( 'DB_COLLATE', '' );
+
+define( 'AUTH_KEY',         'put your unique phrase here' );
+define( 'SECURE_AUTH_KEY',  'put your unique phrase here' );
+define( 'LOGGED_IN_KEY',    'put your unique phrase here' );
+define( 'NONCE_KEY',        'put your unique phrase here' );
+define( 'AUTH_SALT',        'put your unique phrase here' );
+define( 'SECURE_AUTH_SALT', 'put your unique phrase here' );
+define( 'LOGGED_IN_SALT',   'put your unique phrase here' );
+define( 'NONCE_SALT',       'put your unique phrase here' );
+
+$table_prefix = '{wp_prefix}';
+
+define( 'WP_DEBUG', false );
+
+if (!defined('ABSPATH')) {{
+    define( 'ABSPATH', '{wp_path}' );
+}}
+
+/* That's all, stop editing! Happy publishing. */
+
+/** Absolute path to the WordPress directory. */
+
+
+/** Sets up WordPress vars and included files. */
+require_once ABSPATH . 'wp-settings.php';
+"""
+
+
+class DlkController(BaseServicesController, DirectoryBasedController):
+    """Mixin for server controllers that rely on DLK"""
+
+    software_name = "Dlk-Services"
+
+    def run_sql(self, sql: str) -> None:
+        mysql_socket = os.environ["PIFPAF_MYSQL_SOCKET"]
+        subprocess.run(
+            ["mysql", "-S", mysql_socket, "pifpaf"],
+            input=sql.encode(),
+            check=True,
+        )
+
+    def run(self, protocol: str, server_hostname: str, server_port: int) -> None:
+        self.create_config()
+
+        if protocol == "unreal4":
+            protocol = "unreal5"
+        assert protocol in ("unreal5",), protocol
+
+        mysql_socket = os.environ["PIFPAF_MYSQL_SOCKET"]
+
+        assert self.directory
+
+        try:
+            self.wp_cli_path = Path(os.environ["IRCTEST_WP_CLI_PATH"])
+            if not self.wp_cli_path.is_file():
+                raise KeyError()
+        except KeyError:
+            raise RuntimeError(
+                "$IRCTEST_WP_CLI_PATH must be set to a WP-CLI executable (eg. "
+                "downloaded from <https://raw.githubusercontent.com/wp-cli/builds/"
+                "gh-pages/phar/wp-cli.phar>)"
+            ) from None
+
+        try:
+            self.dlk_path = Path(os.environ["IRCTEST_DLK_PATH"])
+            if not self.dlk_path.is_dir():
+                raise KeyError()
+        except KeyError:
+            raise RuntimeError("$IRCTEST_DLK_PATH is not set") from None
+        self.dlk_path = self.dlk_path.resolve()
+
+        # Unpack a fresh Wordpress install in the temporary directory.
+        # In theory we could have a common Wordpress install and only wp-config.php
+        # in the temporary directory; but wp-cli assumes wp-config.php must be
+        # in a Wordpress directory, and fails in various places if it isn't.
+        # Rather than symlinking everything to make it work, let's just copy
+        # the whole code, it's not that big.
+        try:
+            wp_zip_path = Path(os.environ["IRCTEST_WP_ZIP_PATH"])
+            if not wp_zip_path.is_file():
+                raise KeyError()
+        except KeyError:
+            raise RuntimeError(
+                "$IRCTEST_WP_ZIP_PATH must be set to a Wordpress source zipball "
+                "(eg. downloaded from <https://wordpress.org/latest.zip>)"
+            ) from None
+        subprocess.run(
+            ["unzip", wp_zip_path, "-d", self.directory], stdout=subprocess.DEVNULL
+        )
+        self.wp_path = self.directory / "wordpress"
+
+        rand_hex = secrets.token_hex(6)
+        self.wp_prefix = f"wp{rand_hex}_"
+        self.dlk_prefix = f"dlk{rand_hex}_"
+        template_vars = dict(
+            protocol=protocol,
+            server_hostname=server_hostname,
+            server_port=server_port,
+            mysql_socket=mysql_socket,
+            wp_path=self.wp_path,
+            wp_prefix=self.wp_prefix,
+            dlk_prefix=self.dlk_prefix,
+        )
+
+        # Configure Wordpress
+        wp_config_path = self.directory / "wp-config.php"
+        with open(wp_config_path, "w") as fd:
+            fd.write(TEMPLATE_WP_CONFIG.format(**template_vars))
+
+        subprocess.run(
+            [
+                "php",
+                self.wp_cli_path,
+                "core",
+                "install",
+                "--url=http://localhost/",
+                "--title=irctest site",
+                "--admin_user=adminuser",
+                "--admin_email=adminuser@example.org",
+                f"--path={self.wp_path}",
+            ],
+            check=True,
+        )
+
+        # Configure Dlk
+        dlk_log_dir = self.directory / "logs"
+        dlk_conf_dir = self.directory / "conf"
+        dlk_conf_path = dlk_conf_dir / "dalek.conf"
+        os.mkdir(dlk_conf_dir)
+        with open(dlk_conf_path, "w") as fd:
+            fd.write(TEMPLATE_DLK_CONFIG.format(**template_vars))
+        dlk_wp_config_path = dlk_conf_dir / "wordpress.conf"
+        with open(dlk_wp_config_path, "w") as fd:
+            fd.write(TEMPLATE_DLK_WP_CONFIG.format(**template_vars))
+        (dlk_conf_dir / "modules.conf").symlink_to(self.dlk_path / "conf/modules.conf")
+
+        self.proc = subprocess.Popen(
+            [
+                "php",
+                "src/dalek",
+            ],
+            cwd=self.dlk_path,
+            env={
+                **os.environ,
+                "DALEK_CONF_DIR": str(dlk_conf_dir),
+                "DALEK_LOG_DIR": str(dlk_log_dir),
+            },
+        )
+
+    def terminate(self) -> None:
+        super().terminate()
+
+    def kill(self) -> None:
+        super().kill()
+
+    def registerUser(
+        self,
+        case: irctest.cases.BaseServerTestCase,
+        username: str,
+        password: Optional[str] = None,
+    ) -> None:
+        assert password
+        subprocess.run(
+            [
+                "php",
+                self.wp_cli_path,
+                "user",
+                "create",
+                username,
+                f"{username}@example.org",
+                f"--user_pass={password}",
+                f"--path={self.wp_path}",
+            ],
+            check=True,
+        )
+
+
+def get_irctest_controller_class() -> Type[DlkController]:
+    return DlkController

irctest/controllers/ergo.py

@@ -1,14 +1,11 @@
 import copy
 import json
 import os
+import shutil
 import subprocess
-from typing import Any, Dict, Optional, Set, Type, Union
+from typing import Any, Dict, Optional, Type, Union
 
-from irctest.basecontrollers import (
-    BaseServerController,
-    DirectoryBasedController,
-    NotImplementedByController,
-)
+from irctest.basecontrollers import BaseServerController, DirectoryBasedController
 from irctest.cases import BaseServerTestCase
 
 BASE_CONFIG = {
@@ -80,6 +77,9 @@ BASE_CONFIG = {
         "channel-length": 128,
         "client-length": 128,
         "chathistory-maxmessages": 100,
+        "retention": {
+            "allow-individual-delete": True,
+        },
         "tagmsg-storage": {
             "default": False,
             "whitelist": ["+draft/persist", "+persist"],
@@ -129,7 +129,7 @@ def hash_password(password: Union[str, bytes]) -> str:
         ["ergo", "genpasswd"], stdin=subprocess.PIPE, stdout=subprocess.PIPE
     )
     out, _ = p.communicate(input_)
-    return out.decode("utf-8")
+    return out.decode("utf-8").strip()
 
 
 class ErgoController(BaseServerController, DirectoryBasedController):
@@ -152,16 +152,9 @@ class ErgoController(BaseServerController, DirectoryBasedController):
         password: Optional[str],
         ssl: bool,
         run_services: bool,
-        valid_metadata_keys: Optional[Set[str]] = None,
-        invalid_metadata_keys: Optional[Set[str]] = None,
-        restricted_metadata_keys: Optional[Set[str]] = None,
+        faketime: Optional[str],
         config: Optional[Any] = None,
     ) -> None:
-        if valid_metadata_keys or invalid_metadata_keys:
-            raise NotImplementedByController(
-                "Defining valid and invalid METADATA keys."
-            )
-
         self.create_config()
         if config is None:
             config = copy.deepcopy(BASE_CONFIG)
@@ -183,27 +176,32 @@ class ErgoController(BaseServerController, DirectoryBasedController):
         bind_address = "127.0.0.1:%s" % (port,)
         listener_conf = None  # plaintext
         if ssl:
-            self.key_path = os.path.join(self.directory, "ssl.key")
-            self.pem_path = os.path.join(self.directory, "ssl.pem")
+            self.key_path = self.directory / "ssl.key"
+            self.pem_path = self.directory / "ssl.pem"
             listener_conf = {"tls": {"cert": self.pem_path, "key": self.key_path}}
         config["server"]["listeners"][bind_address] = listener_conf  # type: ignore
 
-        config["datastore"]["path"] = os.path.join(  # type: ignore
-            self.directory, "ircd.db"
-        )
+        config["datastore"]["path"] = str(self.directory / "ircd.db")  # type: ignore
 
         if password is not None:
             config["server"]["password"] = hash_password(password)  # type: ignore
 
         assert self.proc is None
 
-        self._config_path = os.path.join(self.directory, "server.yml")
+        self._config_path = self.directory / "server.yml"
         self._config = config
         self._write_config()
         subprocess.call(["ergo", "initdb", "--conf", self._config_path, "--quiet"])
         subprocess.call(["ergo", "mkcerts", "--conf", self._config_path, "--quiet"])
+
+        if faketime and shutil.which("faketime"):
+            faketime_cmd = ["faketime", "-f", faketime]
+            self.faketime_enabled = True
+        else:
+            faketime_cmd = []
+
         self.proc = subprocess.Popen(
-            ["ergo", "run", "--conf", self._config_path, "--quiet"]
+            [*faketime_cmd, "ergo", "run", "--conf", self._config_path, "--quiet"]
         )
 
     def wait_for_services(self) -> None:

irctest/controllers/external_server.py

@@ -1,5 +1,5 @@
 import os
-from typing import Optional, Set, Tuple, Type
+from typing import Optional, Tuple, Type
 
 from irctest.basecontrollers import BaseServerController
 
@@ -39,9 +39,7 @@ class ExternalServerController(BaseServerController):
         password: Optional[str],
         ssl: bool,
         run_services: bool,
-        valid_metadata_keys: Optional[Set[str]] = None,
-        invalid_metadata_keys: Optional[Set[str]] = None,
-        restricted_metadata_keys: Optional[Set[str]] = None,
+        faketime: Optional[str],
     ) -> None:
         pass
 

irctest/controllers/hybrid.py

@@ -40,7 +40,7 @@ class {{
 }};
 connect {{
     name = "services.example.org";
-    host = "localhost";  # Used to validate incoming connection
+    host = "127.0.0.1";  # Used to validate incoming connection
     port = 0;  # We don't need servers to connect to services
     send_password = "password";
     accept_password = "password";

irctest/controllers/inspircd.py

@@ -1,13 +1,9 @@
-import os
+import functools
+import shutil
 import subprocess
-from typing import Optional, Set, Type
+from typing import Optional, Type
 
-from irctest.basecontrollers import (
-    BaseServerController,
-    DirectoryBasedController,
-    NotImplementedByController,
-)
-from irctest.irc_utils.junkdrawer import find_hostname_and_port
+from irctest.basecontrollers import BaseServerController, DirectoryBasedController
 
 TEMPLATE_CONFIG = """
 # Clients:
@@ -17,6 +13,8 @@ TEMPLATE_CONFIG = """
     resolvehostnames="no" # Faster
     recvq="40960" # Needs to be larger than a valid message with tags
     timeout="10"  # So tests don't hang too long
+    localmax="1000"
+    globalmax="1000"
     {password_field}>
 
 <class
@@ -57,8 +55,10 @@ TEMPLATE_CONFIG = """
       target="services.example.org">
 
 # Protocol:
+<module name="banexception">
 <module name="botmode">
 <module name="cap">
+<module name="inviteexception">
 <module name="ircv3">
 <module name="ircv3_accounttag">
 <module name="ircv3_batch">
@@ -74,9 +74,14 @@ TEMPLATE_CONFIG = """
 <module name="namesx"> # For multi-prefix
 <module name="sasl">
 
+# HELP/HELPOP
+<module name="alias">  # for the HELP alias
+<module name="{help_module_name}">
+<include file="examples/{help_module_name}.conf.example">
+
 # Misc:
 <log method="file" type="*" level="debug" target="/tmp/ircd-{port}.log">
-<server name="My.Little.Server" description="testnet" id="000" network="testnet">
+<server name="My.Little.Server" description="test server" id="000" network="testnet">
 """
 
 TEMPLATE_SSL_CONFIG = """
@@ -85,6 +90,17 @@ TEMPLATE_SSL_CONFIG = """
 """
 
 
+@functools.lru_cache()
+def installed_version() -> int:
+    output = subprocess.check_output(["inspircd", "--version"], universal_newlines=True)
+    if output.startswith("InspIRCd-3"):
+        return 3
+    if output.startswith("InspIRCd-4"):
+        return 4
+    else:
+        assert False, f"unexpected version: {output}"
+
+
 class InspircdController(BaseServerController, DirectoryBasedController):
     software_name = "InspIRCd"
     supported_sasl_mechanisms = {"PLAIN"}
@@ -104,19 +120,13 @@ class InspircdController(BaseServerController, DirectoryBasedController):
         password: Optional[str],
         ssl: bool,
         run_services: bool,
-        valid_metadata_keys: Optional[Set[str]] = None,
-        invalid_metadata_keys: Optional[Set[str]] = None,
-        restricted_metadata_keys: Optional[Set[str]] = None,
+        faketime: Optional[str] = None,
     ) -> None:
-        if valid_metadata_keys or invalid_metadata_keys:
-            raise NotImplementedByController(
-                "Defining valid and invalid METADATA keys."
-            )
         assert self.proc is None
         self.port = port
         self.hostname = hostname
         self.create_config()
-        (services_hostname, services_port) = find_hostname_and_port()
+        (services_hostname, services_port) = self.get_hostname_and_port()
 
         password_field = 'password="{}"'.format(password) if password else ""
 
@@ -128,6 +138,13 @@ class InspircdController(BaseServerController, DirectoryBasedController):
         else:
             ssl_config = ""
 
+        if installed_version() == 3:
+            help_module_name = "helpop"
+        elif installed_version() == 4:
+            help_module_name = "help"
+        else:
+            assert False, f"unexpected version: {installed_version()}"
+
         with self.open_file("server.conf") as fd:
             fd.write(
                 TEMPLATE_CONFIG.format(
@@ -137,15 +154,24 @@ class InspircdController(BaseServerController, DirectoryBasedController):
                     services_port=services_port,
                     password_field=password_field,
                     ssl_config=ssl_config,
+                    help_module_name=help_module_name,
                 )
             )
         assert self.directory
+
+        if faketime and shutil.which("faketime"):
+            faketime_cmd = ["faketime", "-f", faketime]
+            self.faketime_enabled = True
+        else:
+            faketime_cmd = []
+
         self.proc = subprocess.Popen(
             [
+                *faketime_cmd,
                 "inspircd",
                 "--nofork",
                 "--config",
-                os.path.join(self.directory, "server.conf"),
+                self.directory / "server.conf",
             ],
             stdout=subprocess.DEVNULL,
         )

irctest/controllers/irc2.py

@@ -1,6 +1,6 @@
-import os
+import shutil
 import subprocess
-from typing import Optional, Set, Type
+from typing import Optional, Type
 
 from irctest.basecontrollers import (
     BaseServerController,
@@ -10,7 +10,7 @@ from irctest.basecontrollers import (
 
 TEMPLATE_CONFIG = """
 # M:<Server NAME>:<YOUR Internet IP#>:<Geographic Location>:<Port>:<SID>:
-M:My.Little.Server:{hostname}:Somewhere:{port}:0042:
+M:My.Little.Server:{hostname}:test server:{port}:0042:
 
 # A:<Your Name/Location>:<Your E-Mail Addr>:<other info>::<network name>:
 A:Organization, IRC dept.:Daemon <ircd@example.irc.org>:Client Server::IRCnet:
@@ -29,8 +29,8 @@ O:*:operpassword:operuser::::
 """
 
 
-class Ircu2Controller(BaseServerController, DirectoryBasedController):
-    binary_name: str
+class Irc2Controller(BaseServerController, DirectoryBasedController):
+    software_name = "irc2"
     services_protocol: str
 
     supports_sts = False
@@ -49,13 +49,8 @@ class Ircu2Controller(BaseServerController, DirectoryBasedController):
         password: Optional[str],
         ssl: bool,
         run_services: bool,
-        valid_metadata_keys: Optional[Set[str]] = None,
-        invalid_metadata_keys: Optional[Set[str]] = None,
+        faketime: Optional[str],
     ) -> None:
-        if valid_metadata_keys or invalid_metadata_keys:
-            raise NotImplementedByController(
-                "Defining valid and invalid METADATA keys."
-            )
         if ssl:
             raise NotImplementedByController("TLS")
         if run_services:
@@ -66,7 +61,7 @@ class Ircu2Controller(BaseServerController, DirectoryBasedController):
         self.create_config()
         password_field = password if password else ""
         assert self.directory
-        pidfile = os.path.join(self.directory, "ircd.pid")
+        pidfile = self.directory / "ircd.pid"
         with self.open_file("server.conf") as fd:
             fd.write(
                 TEMPLATE_CONFIG.format(
@@ -76,18 +71,26 @@ class Ircu2Controller(BaseServerController, DirectoryBasedController):
                     pidfile=pidfile,
                 )
             )
+
+        if faketime and shutil.which("faketime"):
+            faketime_cmd = ["faketime", "-f", faketime]
+            self.faketime_enabled = True
+        else:
+            faketime_cmd = []
+
         self.proc = subprocess.Popen(
             [
+                *faketime_cmd,
                 "ircd",
                 "-s",  # no iauth
                 "-p",
                 "on",
                 "-f",
-                os.path.join(self.directory, "server.conf"),
+                self.directory / "server.conf",
             ],
             # stderr=subprocess.DEVNULL,
         )
 
 
-def get_irctest_controller_class() -> Type[Ircu2Controller]:
-    return Ircu2Controller
+def get_irctest_controller_class() -> Type[Irc2Controller]:
+    return Irc2Controller

irctest/controllers/ircu2.py

@@ -1,6 +1,6 @@
-import os
+import shutil
 import subprocess
-from typing import Optional, Set, Type
+from typing import Optional, Type
 
 from irctest.basecontrollers import (
     BaseServerController,
@@ -51,6 +51,7 @@ features {{
 
 
 class Ircu2Controller(BaseServerController, DirectoryBasedController):
+    software_name = "ircu2"
     supports_sts = False
     extban_mute_char = None
 
@@ -67,13 +68,8 @@ class Ircu2Controller(BaseServerController, DirectoryBasedController):
         password: Optional[str],
         ssl: bool,
         run_services: bool,
-        valid_metadata_keys: Optional[Set[str]] = None,
-        invalid_metadata_keys: Optional[Set[str]] = None,
+        faketime: Optional[str],
     ) -> None:
-        if valid_metadata_keys or invalid_metadata_keys:
-            raise NotImplementedByController(
-                "Defining valid and invalid METADATA keys."
-            )
         if ssl:
             raise NotImplementedByController("TLS")
         if run_services:
@@ -84,7 +80,7 @@ class Ircu2Controller(BaseServerController, DirectoryBasedController):
         self.create_config()
         password_field = 'password = "{}";'.format(password) if password else ""
         assert self.directory
-        pidfile = os.path.join(self.directory, "ircd.pid")
+        pidfile = self.directory / "ircd.pid"
         with self.open_file("server.conf") as fd:
             fd.write(
                 TEMPLATE_CONFIG.format(
@@ -94,12 +90,20 @@ class Ircu2Controller(BaseServerController, DirectoryBasedController):
                     pidfile=pidfile,
                 )
             )
+
+        if faketime and shutil.which("faketime"):
+            faketime_cmd = ["faketime", "-f", faketime]
+            self.faketime_enabled = True
+        else:
+            faketime_cmd = []
+
         self.proc = subprocess.Popen(
             [
+                *faketime_cmd,
                 "ircd",
                 "-n",  # don't detach
                 "-f",
-                os.path.join(self.directory, "server.conf"),
+                self.directory / "server.conf",
                 "-x",
                 "DEBUG",
             ],

irctest/controllers/limnoria.py

@@ -1,4 +1,3 @@
-import os
 import subprocess
 from typing import Optional, Type
 
@@ -55,13 +54,19 @@ class LimnoriaController(BaseClientController, DirectoryBasedController):
         # Runs a client with the config given as arguments
         assert self.proc is None
         self.create_config()
+
+        username = password = ""
+        mechanisms = ""
         if auth:
             mechanisms = " ".join(mech.to_string() for mech in auth.mechanisms)
             if auth.ecdsa_key:
                 with self.open_file("ecdsa_key.pem") as fd:
                     fd.write(auth.ecdsa_key)
-        else:
-            mechanisms = ""
+
+            if auth.username:
+                username = auth.username.encode("unicode_escape").decode()
+            if auth.password:
+                password = auth.password.encode("unicode_escape").decode()
         with self.open_file("bot.conf") as fd:
             fd.write(
                 TEMPLATE_CONFIG.format(
@@ -69,8 +74,8 @@ class LimnoriaController(BaseClientController, DirectoryBasedController):
                     loglevel="CRITICAL",
                     hostname=hostname,
                     port=port,
-                    username=auth.username if auth else "",
-                    password=auth.password if auth else "",
+                    username=username,
+                    password=password,
                     mechanisms=mechanisms.lower(),
                     enable_tls=tls_config.enable if tls_config else "False",
                     trusted_fingerprints=" ".join(tls_config.trusted_fingerprints)
@@ -79,9 +84,7 @@ class LimnoriaController(BaseClientController, DirectoryBasedController):
                 )
             )
         assert self.directory
-        self.proc = subprocess.Popen(
-            ["supybot", os.path.join(self.directory, "bot.conf")]
-        )
+        self.proc = subprocess.Popen(["supybot", self.directory / "bot.conf"])
 
 
 def get_irctest_controller_class() -> Type[LimnoriaController]:

irctest/controllers/mammon.py

@@ -1,4 +1,4 @@
-import os
+import shutil
 import subprocess
 from typing import Optional, Set, Type
 
@@ -33,10 +33,10 @@ extensions:
 - mammon.ext.ircv3.sasl
 - mammon.ext.misc.nopost
 metadata:
-  restricted_keys:
-{restricted_keys}
+  restricted_keys: []
   whitelist:
-{authorized_keys}
+  - display-name
+  - avatar
 monitor:
   limit: 20
 motd:
@@ -89,9 +89,7 @@ class MammonController(BaseServerController, DirectoryBasedController):
         password: Optional[str],
         ssl: bool,
         run_services: bool,
-        valid_metadata_keys: Optional[Set[str]] = None,
-        invalid_metadata_keys: Optional[Set[str]] = None,
-        restricted_metadata_keys: Optional[Set[str]] = None,
+        faketime: Optional[str],
     ) -> None:
         if password is not None:
             raise NotImplementedByController("PASS command")
@@ -106,19 +104,25 @@ class MammonController(BaseServerController, DirectoryBasedController):
                     directory=self.directory,
                     hostname=hostname,
                     port=port,
-                    authorized_keys=make_list(valid_metadata_keys or set()),
-                    restricted_keys=make_list(restricted_metadata_keys or set()),
                 )
             )
         # with self.open_file('server.yml', 'r') as fd:
         #    print(fd.read())
         assert self.directory
+
+        if faketime and shutil.which("faketime"):
+            faketime_cmd = ["faketime", "-f", faketime]
+            self.faketime_enabled = True
+        else:
+            faketime_cmd = []
+
         self.proc = subprocess.Popen(
             [
+                *faketime_cmd,
                 "mammond",
                 "--nofork",  # '--debug',
                 "--config",
-                os.path.join(self.directory, "server.yml"),
+                self.directory / "server.yml",
             ]
         )
 

irctest/controllers/nefarious.py

@@ -0,0 +1,11 @@
+from typing import Type
+
+from .ircu2 import Ircu2Controller
+
+
+class NefariousController(Ircu2Controller):
+    software_name = "Nefarious"
+
+
+def get_irctest_controller_class() -> Type[NefariousController]:
+    return NefariousController

irctest/controllers/ngircd.py

@@ -1,18 +1,13 @@
-import os
+import shutil
 import subprocess
 from typing import Optional, Set, Type
 
-from irctest.basecontrollers import (
-    BaseServerController,
-    DirectoryBasedController,
-    NotImplementedByController,
-)
-from irctest.irc_utils.junkdrawer import find_hostname_and_port
+from irctest.basecontrollers import BaseServerController, DirectoryBasedController
 
 TEMPLATE_CONFIG = """
 [Global]
     Name = My.Little.Server
-    Info = ExampleNET Server
+    Info = test server
     Bind = {hostname}
     Ports = {port}
     AdminInfo1 = Bob Smith
@@ -26,6 +21,9 @@ TEMPLATE_CONFIG = """
     Passive = yes  # don't connect to it
     ServiceMask = *Serv
 
+[Options]
+    MorePrivacy = no  # by default, always replies to WHOWAS with ERR_WASNOSUCHNICK
+
 [Operator]
     Name = operuser
     Password = operpassword
@@ -50,19 +48,13 @@ class NgircdController(BaseServerController, DirectoryBasedController):
         password: Optional[str],
         ssl: bool,
         run_services: bool,
-        valid_metadata_keys: Optional[Set[str]] = None,
-        invalid_metadata_keys: Optional[Set[str]] = None,
-        restricted_metadata_keys: Optional[Set[str]] = None,
+        faketime: Optional[str],
     ) -> None:
-        if valid_metadata_keys or invalid_metadata_keys:
-            raise NotImplementedByController(
-                "Defining valid and invalid METADATA keys."
-            )
         assert self.proc is None
         self.port = port
         self.hostname = hostname
         self.create_config()
-        (unused_hostname, unused_port) = find_hostname_and_port()
+        (unused_hostname, unused_port) = self.get_hostname_and_port()
 
         password_field = "Password = {}".format(password) if password else ""
 
@@ -78,6 +70,7 @@ class NgircdController(BaseServerController, DirectoryBasedController):
             fd.write("\n")
 
         assert self.directory
+
         with self.open_file("server.conf") as fd:
             fd.write(
                 TEMPLATE_CONFIG.format(
@@ -88,15 +81,23 @@ class NgircdController(BaseServerController, DirectoryBasedController):
                     password_field=password_field,
                     key_path=self.key_path,
                     pem_path=self.pem_path,
-                    empty_file=os.path.join(self.directory, "empty.txt"),
+                    empty_file=self.directory / "empty.txt",
                 )
             )
+
+        if faketime and shutil.which("faketime"):
+            faketime_cmd = ["faketime", "-f", faketime]
+            self.faketime_enabled = True
+        else:
+            faketime_cmd = []
+
         self.proc = subprocess.Popen(
             [
+                *faketime_cmd,
                 "ngircd",
                 "--nodaemon",
                 "--config",
-                os.path.join(self.directory, "server.conf"),
+                self.directory / "server.conf",
             ],
             # stdout=subprocess.DEVNULL,
         )

irctest/controllers/plexus4.py

@@ -45,7 +45,7 @@ class {{
 }};
 connect {{
     name = "services.example.org";
-    host = "localhost";  # Used to validate incoming connection
+    host = "127.0.0.1";  # Used to validate incoming connection
     port = 0;  # We don't need servers to connect to services
     send_password = "password";
     accept_password = "password";
@@ -74,7 +74,7 @@ operator {{
 
 
 class Plexus4Controller(BaseHybridController):
-    software_name = "Hybrid"
+    software_name = "Plexus4"
     binary_name = "ircd"
     services_protocol = "plexus"
 

irctest/controllers/snircd.py

@@ -1,6 +1,6 @@
-import os
+import shutil
 import subprocess
-from typing import Optional, Set, Type
+from typing import Optional, Type
 
 from irctest.basecontrollers import (
     BaseServerController,
@@ -67,13 +67,8 @@ class SnircdController(BaseServerController, DirectoryBasedController):
         password: Optional[str],
         ssl: bool,
         run_services: bool,
-        valid_metadata_keys: Optional[Set[str]] = None,
-        invalid_metadata_keys: Optional[Set[str]] = None,
+        faketime: Optional[str],
     ) -> None:
-        if valid_metadata_keys or invalid_metadata_keys:
-            raise NotImplementedByController(
-                "Defining valid and invalid METADATA keys."
-            )
         if ssl:
             raise NotImplementedByController("TLS")
         if run_services:
@@ -84,7 +79,7 @@ class SnircdController(BaseServerController, DirectoryBasedController):
         self.create_config()
         password_field = 'password = "{}";'.format(password) if password else ""
         assert self.directory
-        pidfile = os.path.join(self.directory, "ircd.pid")
+        pidfile = self.directory / "ircd.pid"
         with self.open_file("server.conf") as fd:
             fd.write(
                 TEMPLATE_CONFIG.format(
@@ -94,12 +89,20 @@ class SnircdController(BaseServerController, DirectoryBasedController):
                     pidfile=pidfile,
                 )
             )
+
+        if faketime and shutil.which("faketime"):
+            faketime_cmd = ["faketime", "-f", faketime]
+            self.faketime_enabled = True
+        else:
+            faketime_cmd = []
+
         self.proc = subprocess.Popen(
             [
+                *faketime_cmd,
                 "ircd",
                 "-n",  # don't detach
                 "-f",
-                os.path.join(self.directory, "server.conf"),
+                self.directory / "server.conf",
                 "-x",
                 "DEBUG",
             ],

irctest/controllers/sopel.py

@@ -1,4 +1,4 @@
-import os
+from pathlib import Path
 import subprocess
 import tempfile
 from typing import Optional, TextIO, Type, cast
@@ -38,14 +38,14 @@ class SopelController(BaseClientController):
         super().kill()
         if self.filename:
             try:
-                os.unlink(os.path.join(os.path.expanduser("~/.sopel/"), self.filename))
-            except OSError:  #  File does not exist
+                (Path("~/.sopel/").expanduser() / self.filename).unlink()
+            except OSError:  # File does not exist
                 pass
 
     def open_file(self, filename: str, mode: str = "a") -> TextIO:
-        dir_path = os.path.expanduser("~/.sopel/")
-        os.makedirs(dir_path, exist_ok=True)
-        return cast(TextIO, open(os.path.join(dir_path, filename), mode))
+        dir_path = Path("~/.sopel/").expanduser()
+        dir_path.mkdir(parents=True, exist_ok=True)
+        return cast(TextIO, (dir_path / filename).open(mode))
 
     def create_config(self) -> None:
         with self.open_file(self.filename):
@@ -73,7 +73,7 @@ class SopelController(BaseClientController):
                     auth_method="auth_method = sasl" if auth else "",
                 )
             )
-        self.proc = subprocess.Popen(["sopel", "--quiet", "-c", self.filename])
+        self.proc = subprocess.Popen(["sopel", "-c", self.filename])
 
 
 def get_irctest_controller_class() -> Type[SopelController]:

irctest/controllers/unrealircd.py

@@ -1,21 +1,24 @@
-import os
+import contextlib
+import fcntl
+import functools
+from pathlib import Path
+import shutil
 import subprocess
-from typing import Optional, Set, Type
+import textwrap
+from typing import Callable, ContextManager, Iterator, Optional, Type
 
-from irctest.basecontrollers import (
-    BaseServerController,
-    DirectoryBasedController,
-    NotImplementedByController,
-)
-from irctest.irc_utils.junkdrawer import find_hostname_and_port
+from irctest.basecontrollers import BaseServerController, DirectoryBasedController
 
 TEMPLATE_CONFIG = """
 include "modules.default.conf";
 include "operclass.default.conf";
+{extras}
+loadmodule "third/redact";
+include "help/help.conf";
 
 me {{
     name "My.Little.Server";
-    info "ExampleNET Server";
+    info "test server";
     sid "001";
 }}
 admin {{
@@ -87,11 +90,20 @@ set {{
         // Prevent throttling, especially test_buffering.py which
         // triggers anti-flood with its very long lines
         unknown-users {{
+            nick-flood 255:10;
             lag-penalty 1;
             lag-penalty-bytes 10000;
         }}
     }}
     modes-on-join "+H 100:1d";  // Enables CHATHISTORY
+
+    redacters {{
+        op;
+        sender;
+    }}
+
+    {set_v6only}
+
 }}
 
 tld {{
@@ -101,6 +113,10 @@ tld {{
     rules "{empty_file}";
 }}
 
+files {{
+    tunefile "{empty_file}";
+}}
+
 oper "operuser" {{
     password = "operpassword";
     mask *;
@@ -109,13 +125,72 @@ oper "operuser" {{
 }}
 """
 
+SET_V6ONLY = """
+// Remove RPL_WHOISSPECIAL used to advertise security groups
+whois-details {
+    security-groups { everyone none; self none; oper none; }
+}
+
+plaintext-policy {
+    server warn; // https://www.unrealircd.org/docs/FAQ#server-requires-tls
+    oper warn; // https://www.unrealircd.org/docs/FAQ#oper-requires-tls
+}
+
+anti-flood {
+    everyone {
+        connect-flood 255:10;
+    }
+}
+"""
+
+
+def _filelock(path: Path) -> Callable[[], ContextManager]:
+    """Alternative to :cls:`multiprocessing.Lock` that works with pytest-xdist"""
+
+    @contextlib.contextmanager
+    def f() -> Iterator[None]:
+        with open(path, "a") as fd:
+            fcntl.flock(fd, fcntl.LOCK_EX)
+            yield
+
+    return f
+
+
+_UNREALIRCD_BIN = shutil.which("unrealircd")
+if _UNREALIRCD_BIN:
+    _UNREALIRCD_PREFIX = Path(_UNREALIRCD_BIN).parent.parent
+
+    # Try to keep that lock file specific to this Unrealircd instance
+    _LOCK_PATH = _UNREALIRCD_PREFIX / "irctest-unrealircd-startstop.lock"
+else:
+    # unrealircd not found; we are probably going to crash later anyway...
+    _LOCK_PATH = Path("/tmp/irctest-unrealircd-startstop.lock")
+
+_STARTSTOP_LOCK = _filelock(_LOCK_PATH)
+"""
+Unreal cleans its tmp/ directory after each run, which prevents
+multiple processes from starting/stopping at the same time.
+"""
+
+
+@functools.lru_cache()
+def installed_version() -> int:
+    output = subprocess.check_output(["unrealircd", "-v"], universal_newlines=True)
+    if output.startswith("UnrealIRCd-5."):
+        return 5
+    elif output.startswith("UnrealIRCd-6."):
+        return 6
+    else:
+        assert False, f"unexpected version: {output}"
+
 
 class UnrealircdController(BaseServerController, DirectoryBasedController):
     software_name = "UnrealIRCd"
     supported_sasl_mechanisms = {"PLAIN"}
     supports_sts = False
 
-    extban_mute_char = "q"
+    extban_mute_char = "quiet" if installed_version() >= 6 else "q"
+    software_version = installed_version()
 
     def create_config(self) -> None:
         super().create_config()
@@ -130,23 +205,33 @@ class UnrealircdController(BaseServerController, DirectoryBasedController):
         password: Optional[str],
         ssl: bool,
         run_services: bool,
-        valid_metadata_keys: Optional[Set[str]] = None,
-        invalid_metadata_keys: Optional[Set[str]] = None,
-        restricted_metadata_keys: Optional[Set[str]] = None,
+        faketime: Optional[str],
     ) -> None:
-        if valid_metadata_keys or invalid_metadata_keys:
-            raise NotImplementedByController(
-                "Defining valid and invalid METADATA keys."
-            )
         assert self.proc is None
         self.port = port
         self.hostname = hostname
         self.create_config()
-        (unused_hostname, unused_port) = find_hostname_and_port()
-        (services_hostname, services_port) = find_hostname_and_port()
+
+        if installed_version() >= 6:
+            extras = textwrap.dedent(
+                """
+                include "snomasks.default.conf";
+                loadmodule "cloak_md5";
+                """
+            )
+            set_v6only = SET_V6ONLY
+        else:
+            extras = ""
+            set_v6only = ""
+
+        with self.open_file("empty.txt") as fd:
+            fd.write("\n")
 
         password_field = 'password "{}";'.format(password) if password else ""
 
+        (services_hostname, services_port) = self.get_hostname_and_port()
+        (unused_hostname, unused_port) = self.get_hostname_and_port()
+
         self.gen_ssl()
         if ssl:
             (tls_hostname, tls_port) = (hostname, port)
@@ -155,10 +240,8 @@ class UnrealircdController(BaseServerController, DirectoryBasedController):
             # Unreal refuses to start without TLS enabled
             (tls_hostname, tls_port) = (unused_hostname, unused_port)
 
-        with self.open_file("empty.txt") as fd:
-            fd.write("\n")
-
         assert self.directory
+
         with self.open_file("unrealircd.conf") as fd:
             fd.write(
                 TEMPLATE_CONFIG.format(
@@ -171,22 +254,33 @@ class UnrealircdController(BaseServerController, DirectoryBasedController):
                     password_field=password_field,
                     key_path=self.key_path,
                     pem_path=self.pem_path,
-                    empty_file=os.path.join(self.directory, "empty.txt"),
+                    empty_file=self.directory / "empty.txt",
+                    set_v6only=set_v6only,
+                    extras=extras,
                 )
             )
-        self.proc = subprocess.Popen(
-            [
-                "unrealircd",
-                "-t",
-                "-F",  # BOOT_NOFORK
-                "-f",
-                os.path.join(self.directory, "unrealircd.conf"),
-            ],
-            # stdout=subprocess.DEVNULL,
-        )
+
+        if faketime and shutil.which("faketime"):
+            faketime_cmd = ["faketime", "-f", faketime]
+            self.faketime_enabled = True
+        else:
+            faketime_cmd = []
+
+        with _STARTSTOP_LOCK():
+            self.proc = subprocess.Popen(
+                [
+                    *faketime_cmd,
+                    "unrealircd",
+                    "-t",
+                    "-F",  # BOOT_NOFORK
+                    "-f",
+                    self.directory / "unrealircd.conf",
+                ],
+                # stdout=subprocess.DEVNULL,
+            )
+            self.wait_for_port()
 
         if run_services:
-            self.wait_for_port()
             self.services_controller = self.services_controller_class(
                 self.test_config, self
             )
@@ -196,6 +290,14 @@ class UnrealircdController(BaseServerController, DirectoryBasedController):
                 server_port=services_port,
             )
 
+    def kill_proc(self) -> None:
+        assert self.proc
+
+        with _STARTSTOP_LOCK():
+            self.proc.kill()
+            self.proc.wait(5)  # wait for it to actually die
+            self.proc = None
+
 
 def get_irctest_controller_class() -> Type[UnrealircdController]:
     return UnrealircdController

irctest/dashboard/format.py

@@ -0,0 +1,449 @@
+import base64
+import dataclasses
+import gzip
+import hashlib
+import importlib
+from pathlib import Path
+import re
+import sys
+from typing import (
+    IO,
+    Callable,
+    Dict,
+    Iterable,
+    Iterator,
+    List,
+    Optional,
+    Tuple,
+    TypeVar,
+)
+import xml.etree.ElementTree as ET
+
+from defusedxml.ElementTree import parse as parse_xml
+import docutils.core
+
+NETLIFY_CHAR_BLACKLIST = frozenset('":<>|*?\r\n#')
+"""Characters not allowed in output filenames"""
+
+
+@dataclasses.dataclass
+class CaseResult:
+    module_name: str
+    class_name: str
+    test_name: str
+    job: str
+    success: bool
+    skipped: bool
+    system_out: Optional[str]
+    details: Optional[str] = None
+    type: Optional[str] = None
+    message: Optional[str] = None
+
+    def output_filename(self) -> str:
+        test_name = self.test_name
+        if len(test_name) > 50 or set(test_name) & NETLIFY_CHAR_BLACKLIST:
+            # File name too long or otherwise invalid. This should be good enough:
+            m = re.match(r"(?P<function_name>\w+?)\[(?P<params>.+)\]", test_name)
+            assert m, "File name is too long but has no parameter."
+            test_name = f'{m.group("function_name")}[{md5sum(m.group("params"))}]'
+        return f"{self.job}_{self.module_name}.{self.class_name}.{test_name}.txt"
+
+
+TK = TypeVar("TK")
+TV = TypeVar("TV")
+
+
+def md5sum(text: str) -> str:
+    return base64.urlsafe_b64encode(hashlib.md5(text.encode()).digest()).decode()
+
+
+def group_by(list_: Iterable[TV], key: Callable[[TV], TK]) -> Dict[TK, List[TV]]:
+    groups: Dict[TK, List[TV]] = {}
+    for value in list_:
+        groups.setdefault(key(value), []).append(value)
+
+    return groups
+
+
+def iter_job_results(job_file_name: Path, job: ET.ElementTree) -> Iterator[CaseResult]:
+    (suite,) = job.getroot()
+    for case in suite:
+        if "name" not in case.attrib:
+            continue
+
+        success = True
+        skipped = False
+        details = None
+        system_out = None
+        extra: Dict[str, str] = {}
+        for child in case:
+            if child.tag == "skipped":
+                success = True
+                skipped = True
+                details = None
+                extra = child.attrib
+            elif child.tag in ("failure", "error"):
+                success = False
+                skipped = False
+                details = child.text
+                extra = child.attrib
+            elif child.tag == "system-out":
+                assert (
+                    system_out is None
+                    # for some reason, skipped tests have two system-out;
+                    # and the second one contains test teardown
+                    or child.text.startswith(system_out.rstrip())
+                ), ("Duplicate system-out tag", repr(system_out), repr(child.text))
+                system_out = child.text
+            else:
+                assert False, child
+
+        (module_name, class_name) = case.attrib["classname"].rsplit(".", 1)
+        m = re.match(
+            r"(.*/)?pytest[ -]results[ _](?P<name>.*)"
+            r"[ _][(]?(stable|release|devel|devel_release)[)]?/pytest.xml(.gz)?",
+            str(job_file_name),
+        )
+        assert m, job_file_name
+        yield CaseResult(
+            module_name=module_name,
+            class_name=class_name,
+            test_name=case.attrib["name"],
+            job=m.group("name"),
+            success=success,
+            skipped=skipped,
+            details=details,
+            system_out=system_out,
+            **extra,
+        )
+
+
+def rst_to_element(s: str) -> ET.Element:
+    html = docutils.core.publish_parts(s, writer_name="xhtml")["html_body"]
+    htmltree = ET.fromstring(html)
+    return htmltree
+
+
+def append_docstring(element: ET.Element, obj: object) -> None:
+    if obj.__doc__ is None:
+        return
+
+    element.append(rst_to_element(obj.__doc__))
+
+
+def build_job_html(job: str, results: List[CaseResult]) -> ET.Element:
+    jobs = sorted({result.job for result in results})
+    root = ET.Element("html")
+    head = ET.SubElement(root, "head")
+    ET.SubElement(head, "title").text = job
+    ET.SubElement(head, "link", rel="stylesheet", type="text/css", href="./style.css")
+
+    body = ET.SubElement(root, "body")
+
+    ET.SubElement(body, "h1").text = job
+
+    table = build_test_table(jobs, results)
+    table.set("class", "job-results test-matrix")
+    body.append(table)
+
+    return root
+
+
+def build_module_html(
+    jobs: List[str], results: List[CaseResult], module_name: str
+) -> ET.Element:
+    module = importlib.import_module(module_name)
+
+    root = ET.Element("html")
+    head = ET.SubElement(root, "head")
+    ET.SubElement(head, "title").text = module_name
+    ET.SubElement(head, "link", rel="stylesheet", type="text/css", href="./style.css")
+
+    body = ET.SubElement(root, "body")
+
+    ET.SubElement(body, "h1").text = module_name
+
+    append_docstring(body, module)
+
+    table = build_test_table(jobs, results)
+    table.set("class", "module-results test-matrix")
+    body.append(table)
+
+    return root
+
+
+def build_test_table(jobs: List[str], results: List[CaseResult]) -> ET.Element:
+    multiple_modules = len({r.module_name for r in results}) > 1
+    results_by_module_and_class = group_by(
+        results, lambda r: (r.module_name, r.class_name)
+    )
+
+    table = ET.Element("table")
+
+    job_row = ET.Element("tr")
+    ET.SubElement(job_row, "th")  # column of case name
+    for job in jobs:
+        cell = ET.SubElement(job_row, "th")
+        ET.SubElement(ET.SubElement(cell, "div"), "span").text = job
+        cell.set("class", "job-name")
+
+    for (module_name, class_name), class_results in sorted(
+        results_by_module_and_class.items()
+    ):
+        if multiple_modules:
+            # if the page shows classes from various modules, use the fully-qualified
+            # name in order to disambiguate and be clearer (eg. show
+            # "irctest.server_tests.extended_join.MetadataTestCase" instead of just
+            # "MetadataTestCase" which looks like it's about IRCv3's METADATA spec.
+            qualified_class_name = f"{module_name}.{class_name}"
+        else:
+            # otherwise, it's not needed, so let's not display it
+            qualified_class_name = class_name
+
+        module = importlib.import_module(module_name)
+
+        # Header row: class name
+        header_row = ET.SubElement(table, "tr")
+        th = ET.SubElement(header_row, "th", colspan=str(len(jobs) + 1))
+        row_anchor = f"{qualified_class_name}"
+        section_header = ET.SubElement(
+            ET.SubElement(th, "h2"),
+            "a",
+            href=f"#{row_anchor}",
+            id=row_anchor,
+        )
+        section_header.text = qualified_class_name
+        append_docstring(th, getattr(module, class_name))
+
+        # Header row: one column for each implementation
+        table.append(job_row)
+
+        # One row for each test:
+        results_by_test = group_by(class_results, key=lambda r: r.test_name)
+        for test_name, test_results in sorted(results_by_test.items()):
+            row_anchor = f"{qualified_class_name}.{test_name}"
+            if len(row_anchor) >= 50:
+                # Too long; give up on generating readable URL
+                # TODO: only hash test parameter
+                row_anchor = md5sum(row_anchor)
+
+            row = ET.SubElement(table, "tr", id=row_anchor)
+
+            cell = ET.SubElement(row, "th")
+            cell.set("class", "test-name")
+            cell_link = ET.SubElement(cell, "a", href=f"#{row_anchor}")
+            cell_link.text = test_name
+
+            results_by_job = group_by(test_results, key=lambda r: r.job)
+            for job_name in jobs:
+                cell = ET.SubElement(row, "td")
+                try:
+                    (result,) = results_by_job[job_name]
+                except KeyError:
+                    cell.set("class", "deselected")
+                    cell.text = "d"
+                    continue
+
+                text: Optional[str]
+
+                if result.skipped:
+                    cell.set("class", "skipped")
+                    if result.type == "pytest.skip":
+                        text = "s"
+                    elif result.type == "pytest.xfail":
+                        text = "X"
+                        cell.set("class", "expected-failure")
+                    else:
+                        text = result.type
+                elif result.success:
+                    cell.set("class", "success")
+                    if result.type:
+                        # dead code?
+                        text = result.type
+                    else:
+                        text = "."
+                else:
+                    cell.set("class", "failure")
+                    if result.type:
+                        # dead code?
+                        text = result.type
+                    else:
+                        text = "f"
+
+                if result.system_out:
+                    # There is a log file; link to it.
+                    a = ET.SubElement(cell, "a", href=f"./{result.output_filename()}")
+                    a.text = text or "?"
+                else:
+                    cell.text = text or "?"
+                if result.message:
+                    cell.set("title", result.message)
+
+    return table
+
+
+def write_html_pages(
+    output_dir: Path, results: List[CaseResult]
+) -> List[Tuple[str, str, str]]:
+    """Returns the list of (module_name, file_name)."""
+    output_dir.mkdir(parents=True, exist_ok=True)
+    results_by_module = group_by(results, lambda r: r.module_name)
+
+    # used as columns
+    jobs = list(sorted({r.job for r in results}))
+
+    job_categories = {}
+    for job in jobs:
+        is_client = any(
+            "client_tests" in result.module_name and result.job == job
+            for result in results
+        )
+        is_server = any(
+            "server_tests" in result.module_name and result.job == job
+            for result in results
+        )
+        assert is_client != is_server, (job, is_client, is_server)
+        if job.endswith(("-atheme", "-anope", "-dlk")):
+            assert is_server
+            job_categories[job] = "server-with-services"
+        elif is_server:
+            job_categories[job] = "server"  # with or without services
+        else:
+            assert is_client
+            job_categories[job] = "client"
+
+    pages = []
+
+    for module_name, module_results in sorted(results_by_module.items()):
+        # Filter out client jobs if this is a server test module, and vice versa
+        module_categories = {
+            job_categories[result.job]
+            for result in results
+            if result.module_name == module_name and not result.skipped
+        }
+
+        module_jobs = [job for job in jobs if job_categories[job] in module_categories]
+
+        root = build_module_html(module_jobs, module_results, module_name)
+        file_name = f"{module_name}.xhtml"
+        write_xml_file(output_dir / file_name, root)
+        pages.append(("module", module_name, file_name))
+
+    for category in ("server", "client"):
+        for job in [job for job in job_categories if job_categories[job] == category]:
+            job_results = [
+                result
+                for result in results
+                if result.job == job or result.job.startswith(job + "-")
+            ]
+            root = build_job_html(job, job_results)
+            file_name = f"{job}.xhtml"
+            write_xml_file(output_dir / file_name, root)
+            pages.append(("job", job, file_name))
+
+    return pages
+
+
+def write_test_outputs(output_dir: Path, results: List[CaseResult]) -> None:
+    """Writes stdout files of each test."""
+    for result in results:
+        if result.system_out is None:
+            continue
+        output_file = output_dir / result.output_filename()
+        with output_file.open("wt") as fd:
+            fd.write(result.system_out)
+
+
+def write_html_index(output_dir: Path, pages: List[Tuple[str, str, str]]) -> None:
+    root = ET.Element("html")
+    head = ET.SubElement(root, "head")
+    ET.SubElement(head, "title").text = "irctest dashboard"
+    ET.SubElement(head, "link", rel="stylesheet", type="text/css", href="./style.css")
+
+    body = ET.SubElement(root, "body")
+
+    ET.SubElement(body, "h1").text = "irctest dashboard"
+
+    module_pages = []
+    job_pages = []
+    for page_type, title, file_name in sorted(pages):
+        if page_type == "module":
+            module_pages.append((title, file_name))
+        elif page_type == "job":
+            job_pages.append((title, file_name))
+        else:
+            assert False, page_type
+
+    ET.SubElement(body, "h2").text = "Tests by command/specification"
+
+    dl = ET.SubElement(body, "dl")
+    dl.set("class", "module-index")
+
+    for module_name, file_name in sorted(module_pages):
+        module = importlib.import_module(module_name)
+
+        link = ET.SubElement(ET.SubElement(dl, "dt"), "a", href=f"./{file_name}")
+        link.text = module_name
+        append_docstring(ET.SubElement(dl, "dd"), module)
+
+    ET.SubElement(body, "h2").text = "Tests by implementation"
+
+    ul = ET.SubElement(body, "ul")
+    ul.set("class", "job-index")
+
+    for job, file_name in sorted(job_pages):
+        link = ET.SubElement(ET.SubElement(ul, "li"), "a", href=f"./{file_name}")
+        link.text = job
+
+    write_xml_file(output_dir / "index.xhtml", root)
+
+
+def write_assets(output_dir: Path) -> None:
+    css_path = output_dir / "style.css"
+    source_css_path = Path(__file__).parent / "style.css"
+    with css_path.open("wt") as fd:
+        with source_css_path.open() as source_fd:
+            fd.write(source_fd.read())
+
+
+def write_xml_file(filename: Path, root: ET.Element) -> None:
+    # Hacky: ET expects the namespace to be present in every tag we create instead;
+    # but it would be excessively verbose.
+    root.set("xmlns", "http://www.w3.org/1999/xhtml")
+
+    # Serialize
+    s = ET.tostring(root)
+
+    with filename.open("wb") as fd:
+        fd.write(s)
+
+
+def parse_xml_file(filename: Path) -> ET.ElementTree:
+    fd: IO
+    if filename.suffix == ".gz":
+        with gzip.open(filename, "rb") as fd:  # type: ignore
+            return parse_xml(fd)  # type: ignore
+    else:
+        with open(filename) as fd:
+            return parse_xml(fd)  # type: ignore
+
+
+def main(output_path: Path, filenames: List[Path]) -> int:
+    results = [
+        result
+        for filename in filenames
+        for result in iter_job_results(filename, parse_xml_file(filename))
+    ]
+
+    pages = write_html_pages(output_path, results)
+
+    write_html_index(output_path, pages)
+    write_test_outputs(output_path, results)
+    write_assets(output_path)
+
+    return 0
+
+
+if __name__ == "__main__":
+    (_, output_path, *filenames) = sys.argv
+    exit(main(Path(output_path), list(map(Path, filenames))))

irctest/dashboard/github_download.py

@@ -0,0 +1,87 @@
+import dataclasses
+import gzip
+import io
+import json
+from pathlib import Path
+import sys
+from typing import Iterator
+import urllib.parse
+import urllib.request
+import zipfile
+
+
+@dataclasses.dataclass
+class Artifact:
+    repo: str
+    run_id: int
+    name: str
+    download_url: str
+
+    @property
+    def public_download_url(self) -> str:
+        # GitHub API is not available publicly for artifacts, we need to use
+        # a third-party proxy to access it...
+        name = urllib.parse.quote(self.name)
+        return f"https://nightly.link/{repo}/actions/runs/{self.run_id}/{name}.zip"
+
+
+def iter_run_artifacts(repo: str, run_id: int) -> Iterator[Artifact]:
+    request = urllib.request.Request(
+        f"https://api.github.com/repos/{repo}/actions/runs/{run_id}/artifacts"
+        "?per_page=100",
+        headers={"Accept": "application/vnd.github.v3+json"},
+    )
+
+    response = urllib.request.urlopen(request)
+
+    for artifact in json.load(response)["artifacts"]:
+        if not artifact["name"].startswith(("pytest-results_", "pytest results ")):
+            continue
+        if artifact["expired"]:
+            continue
+        yield Artifact(
+            repo=repo,
+            run_id=run_id,
+            name=artifact["name"],
+            download_url=artifact["archive_download_url"],
+        )
+
+
+def download_artifact(output_name: Path, url: str) -> None:
+    if output_name.exists():
+        return
+    response = urllib.request.urlopen(url)
+    archive_bytes = response.read()  # Can't stream it, it's a ZIP
+    with zipfile.ZipFile(io.BytesIO(archive_bytes)) as archive:
+        with archive.open("pytest.xml") as input_fd:
+            pytest_xml = input_fd.read()
+
+    tmp_output_path = output_name.with_suffix(".tmp")
+    with gzip.open(tmp_output_path, "wb") as output_fd:
+        output_fd.write(pytest_xml)
+
+    # Atomically write to the output path, so that we don't write partial files in case
+    # the download process is interrupted
+    tmp_output_path.rename(output_name)
+
+
+def main(output_dir: Path, repo: str, run_id: int) -> int:
+    output_dir.mkdir(parents=True, exist_ok=True)
+    run_path = output_dir / str(run_id)
+    run_path.mkdir(exist_ok=True)
+
+    for artifact in iter_run_artifacts(repo, run_id):
+        artifact_path = run_path / artifact.name / "pytest.xml.gz"
+        artifact_path.parent.mkdir(exist_ok=True)
+        try:
+            download_artifact(artifact_path, artifact.download_url)
+        except Exception:
+            download_artifact(artifact_path, artifact.public_download_url)
+        print("downloaded", artifact.name)
+
+    return 0
+
+
+if __name__ == "__main__":
+    (_, output_path, repo, run_id) = sys.argv
+    exit(main(Path(output_path), repo, int(run_id)))

irctest/dashboard/style.css

@@ -0,0 +1,67 @@
+@media (prefers-color-scheme: dark) {
+    body {
+        background-color: #121212;
+        color: rgba(255, 255, 255, 0.87);
+    }
+    a {
+        filter: invert(0.85) hue-rotate(180deg);
+    }
+}
+
+dl.module-index {
+    column-width: 40em; /* Magic constant for 2 columns on average laptop/desktop */
+}
+
+/* Only 1px solid border between cells */
+table.test-matrix {
+    border-spacing: 0;
+    border-collapse: collapse;
+}
+table.test-matrix td {
+    text-align: center;
+    border: 1px solid grey;
+}
+
+/* Make link take the whole cell */
+table.test-matrix td a {
+    display: block;
+    margin: 0;
+    padding: 0;
+    width: 100%;
+    height: 100%;
+    color: black;
+    text-decoration: none;
+}
+
+/* Test matrix colors */
+table.test-matrix .deselected {
+    background-color: grey;
+}
+table.test-matrix .success {
+    background-color: green;
+}
+table.test-matrix .skipped {
+    background-color: yellow;
+}
+table.test-matrix .failure {
+    background-color: red;
+}
+table.test-matrix .expected-failure {
+    background-color: orange;
+}
+
+/* Rotate headers, thanks to https://css-tricks.com/rotated-table-column-headers/ */
+table.module-results th.job-name {
+  height: 140px;
+  white-space: nowrap;
+}
+table.module-results th.job-name > div {
+  transform:
+    translate(28px, 50px)
+    rotate(315deg);
+  width: 40px;
+}
+table.module-results th.job-name > div > span {
+  border-bottom: 1px solid grey;
+  padding-left: 0px;
+}

irctest/numerics.py

@@ -66,6 +66,7 @@ RPL_WHOISIDLE = "317"
 RPL_ENDOFWHOIS = "318"
 RPL_WHOISCHANNELS = "319"
 RPL_WHOISSPECIAL = "320"
+RPL_LISTSTART = "321"
 RPL_LIST = "322"
 RPL_LISTEND = "323"
 RPL_CHANNELMODEIS = "324"
@@ -86,6 +87,7 @@ RPL_ENDOFEXCEPTLIST = "349"
 RPL_VERSION = "351"
 RPL_WHOREPLY = "352"
 RPL_NAMREPLY = "353"
+RPL_WHOSPCRPL = "354"
 RPL_LINKS = "364"
 RPL_ENDOFLINKS = "365"
 RPL_ENDOFNAMES = "366"
@@ -140,6 +142,7 @@ ERR_USERONCHANNEL = "443"
 ERR_NOLOGIN = "444"
 ERR_SUMMONDISABLED = "445"
 ERR_USERSDISABLED = "446"
+ERR_FORBIDDENCHANNEL = "448"
 ERR_NOTREGISTERED = "451"
 ERR_NEEDMOREPARAMS = "461"
 ERR_ALREADYREGISTRED = "462"

irctest/patma.py

@@ -13,18 +13,18 @@ class Operator:
         pass
 
 
-class AnyStr(Operator):
+class _AnyStr(Operator):
     """Wildcard matching any string"""
 
     def __repr__(self) -> str:
-        return "AnyStr"
+        return "ANYSTR"
 
 
-class AnyOptStr(Operator):
+class _AnyOptStr(Operator):
     """Wildcard matching any string as well as None"""
 
     def __repr__(self) -> str:
-        return "AnyOptStr"
+        return "ANYOPTSTR"
 
 
 @dataclasses.dataclass(frozen=True)
@@ -43,6 +43,14 @@ class NotStrRe(Operator):
         return f"NotStrRe(r'{self.regexp}')"
 
 
+@dataclasses.dataclass(frozen=True)
+class InsensitiveStr(Operator):
+    string: str
+
+    def __repr__(self) -> str:
+        return f"InsensitiveStr({self.string!r})"
+
+
 @dataclasses.dataclass(frozen=True)
 class RemainingKeys(Operator):
     """Used in a dict pattern to match all remaining keys.
@@ -51,30 +59,42 @@ class RemainingKeys(Operator):
     key: Operator
 
     def __repr__(self) -> str:
-        return f"Keys({self.key!r})"
+        return f"RemainingKeys({self.key!r})"
 
 
-ANYSTR = AnyStr()
+ANYSTR = _AnyStr()
 """Singleton, spares two characters"""
 
-ANYDICT = {RemainingKeys(ANYSTR): AnyOptStr()}
+ANYOPTSTR = _AnyOptStr()
+"""Singleton, spares two characters"""
+
+ANYDICT = {RemainingKeys(ANYSTR): ANYOPTSTR}
 """Matches any dictionary; useful to compare tags dict, eg.
 `match_dict(got_tags, {"label": "foo", **ANYDICT})`"""
 
 
-class _AnyListRemainder:
+@dataclasses.dataclass(frozen=True)
+class ListRemainder:
+    item: Operator
+    min_length: int = 0
+
     def __repr__(self) -> str:
-        return "*ANYLIST"
+        if self.min_length:
+            return f"ListRemainder({self.item!r}, min_length={self.min_length})"
+        elif self.item is ANYSTR:
+            return "*ANYLIST"
+        else:
+            return f"ListRemainder({self.item!r})"
 
 
-ANYLIST = [_AnyListRemainder()]
+ANYLIST = [ListRemainder(ANYSTR)]
 """Matches any list remainder"""
 
 
 def match_string(got: Optional[str], expected: Union[str, Operator, None]) -> bool:
-    if isinstance(expected, AnyOptStr):
+    if isinstance(expected, _AnyOptStr):
         return True
-    elif isinstance(expected, AnyStr) and got is not None:
+    elif isinstance(expected, _AnyStr) and got is not None:
         return True
     elif isinstance(expected, StrRe):
         if got is None or not re.match(expected.regexp, got):
@@ -82,6 +102,9 @@ def match_string(got: Optional[str], expected: Union[str, Operator, None]) -> bo
     elif isinstance(expected, NotStrRe):
         if got is None or re.match(expected.regexp, got):
             return False
+    elif isinstance(expected, InsensitiveStr):
+        if got is None or got.lower() != expected.string.lower():
+            return False
     elif isinstance(expected, Operator):
         raise NotImplementedError(f"Unsupported operator: {expected}")
     elif got != expected:
@@ -98,9 +121,13 @@ def match_list(
     The ANYSTR operator can be used on the 'expected' side as a wildcard,
     matching any *single* value; and StrRe("<regexp>") can be used to match regular
     expressions"""
-    if expected[-1] is ANYLIST[0]:
-        expected = expected[0:-1]
-        got = got[0 : len(expected)]  # Ignore remaining
+    if expected and isinstance(expected[-1], ListRemainder):
+        # Expand the 'expected' list to have as many items as the 'got' list
+        expected = list(expected)  # copy
+        remainder = expected.pop()
+        nb_remaining_items = len(got) - len(expected)
+        expected += [remainder.item] * max(nb_remaining_items, remainder.min_length)
+
     if len(got) != len(expected):
         return False
     return all(
@@ -125,21 +152,23 @@ def match_dict(
     # Set to not-None if we find a Keys() operator in the dict keys
     remaining_keys_wildcard = None
 
-    for (expected_key, expected_value) in expected.items():
+    for expected_key, expected_value in expected.items():
         if isinstance(expected_key, RemainingKeys):
             remaining_keys_wildcard = (expected_key.key, expected_value)
-        elif isinstance(expected_key, Operator):
-            raise NotImplementedError(f"Unsupported operator: {expected_key}")
         else:
-            if expected_key not in got:
-                return False
-            got_value = got.pop(expected_key)
-            if not match_string(got_value, expected_value):
+            for key in got:
+                if match_string(key, expected_key) and match_string(
+                    got[key], expected_value
+                ):
+                    got.pop(key)
+                    break
+            else:
+                # Found no (key, value) pair matching the request
                 return False
 
     if remaining_keys_wildcard:
         (expected_key, expected_value) = remaining_keys_wildcard
-        for (key, value) in got.items():
+        for key, value in got.items():
             if not match_string(key, expected_key):
                 return False
             if not match_string(value, expected_value):

irctest/runner.py

@@ -14,6 +14,11 @@ class ImplementationChoice(unittest.SkipTest):
         )
 
 
+class OptionalCommandNotSupported(unittest.SkipTest):
+    def __str__(self) -> str:
+        return "Unsupported command: {}".format(self.args[0])
+
+
 class OptionalExtensionNotSupported(unittest.SkipTest):
     def __str__(self) -> str:
         return "Unsupported extension: {}".format(self.args[0])

irctest/self_tests/cases.py

@@ -1,13 +1,24 @@
+"""Internal checks of assertion implementations."""
+
 from typing import Dict, List, Tuple
 
 import pytest
 
 from irctest import cases
 from irctest.irc_utils.message_parser import parse_message
-from irctest.patma import ANYDICT, ANYSTR, AnyOptStr, NotStrRe, RemainingKeys, StrRe
+from irctest.patma import (
+    ANYDICT,
+    ANYLIST,
+    ANYOPTSTR,
+    ANYSTR,
+    ListRemainder,
+    NotStrRe,
+    RemainingKeys,
+    StrRe,
+)
 
 # fmt: off
-MESSAGE_SPECS: List[Tuple[Dict, List[str], List[str]]] = [
+MESSAGE_SPECS: List[Tuple[Dict, List[str], List[str], List[str]]] = [
     (
         # the specification:
         dict(
@@ -27,6 +38,11 @@ MESSAGE_SPECS: List[Tuple[Dict, List[str], List[str]]] = [
         [
             "PRIVMSG #chan hello2",
             "PRIVMSG #chan2 hello",
+        ],
+        # and they each error with:
+        [
+            "expected params to match ['#chan', 'hello'], got ['#chan', 'hello2']",
+            "expected params to match ['#chan', 'hello'], got ['#chan2', 'hello']",
         ]
     ),
     (
@@ -49,6 +65,11 @@ MESSAGE_SPECS: List[Tuple[Dict, List[str], List[str]]] = [
         [
             "PRIVMSG #chan :hi",
             "PRIVMSG #chan2 hello",
+        ],
+        # and they each error with:
+        [
+            "expected params to match ['#chan', StrRe(r'hello.*')], got ['#chan', 'hi']",
+            "expected params to match ['#chan', StrRe(r'hello.*')], got ['#chan2', 'hello']",
         ]
     ),
     (
@@ -67,6 +88,12 @@ MESSAGE_SPECS: List[Tuple[Dict, List[str], List[str]]] = [
             "PRIVMSG #chan :hi",
             ":foo2!baz@qux PRIVMSG #chan hello",
             "@tag1=bar :foo2!baz@qux PRIVMSG #chan :hello",
+        ],
+        # and they each error with:
+        [
+            "expected nick to be foo, got None instead",
+            "expected nick to be foo, got foo2 instead",
+            "expected nick to be foo, got foo2 instead",
         ]
     ),
     (
@@ -87,6 +114,13 @@ MESSAGE_SPECS: List[Tuple[Dict, List[str], List[str]]] = [
             "@tag1=value1 PRIVMSG #chan :hello",
             "PRIVMSG #chan hello",
             ":foo!baz@qux PRIVMSG #chan hello",
+        ],
+        # and they each error with:
+        [
+            "expected tags to match {'tag1': 'bar'}, got {'tag1': 'bar', 'tag2': ''}",
+            "expected tags to match {'tag1': 'bar'}, got {'tag1': 'value1'}",
+            "expected tags to match {'tag1': 'bar'}, got {}",
+            "expected tags to match {'tag1': 'bar'}, got {}",
         ]
     ),
     (
@@ -107,6 +141,12 @@ MESSAGE_SPECS: List[Tuple[Dict, List[str], List[str]]] = [
             "@tag1=bar;tag2= PRIVMSG #chan :hello",
             "PRIVMSG #chan hello",
             ":foo!baz@qux PRIVMSG #chan hello",
+        ],
+        # and they each error with:
+        [
+            "expected tags to match {'tag1': ANYSTR}, got {'tag1': 'bar', 'tag2': ''}",
+            "expected tags to match {'tag1': ANYSTR}, got {}",
+            "expected tags to match {'tag1': ANYSTR}, got {}",
         ]
     ),
     (
@@ -129,12 +169,53 @@ MESSAGE_SPECS: List[Tuple[Dict, List[str], List[str]]] = [
             "PRIVMSG #chan hello2",
             "PRIVMSG #chan2 hello",
             ":foo!baz@qux PRIVMSG #chan hello",
+        ],
+        # and they each error with:
+        [
+            "expected command to be PRIVMSG, got PRIVMG",
+            "expected tags to match {'tag1': 'bar', RemainingKeys(ANYSTR): ANYOPTSTR}, got {'tag1': 'value1'}",
+            "expected params to match ['#chan', 'hello'], got ['#chan', 'hello2']",
+            "expected params to match ['#chan', 'hello'], got ['#chan2', 'hello']",
+            "expected tags to match {'tag1': 'bar', RemainingKeys(ANYSTR): ANYOPTSTR}, got {}",
         ]
     ),
     (
         # the specification:
         dict(
-            tags={"tag1": "bar", RemainingKeys(NotStrRe("tag2")): AnyOptStr()},
+            tags={StrRe("tag[12]"): "bar", **ANYDICT},
+            command="PRIVMSG",
+            params=["#chan", "hello"],
+        ),
+        # matches:
+        [
+            "@tag1=bar PRIVMSG #chan :hello",
+            "@tag1=bar;tag2= PRIVMSG #chan :hello",
+            "@tag1=bar :foo!baz@qux PRIVMSG #chan :hello",
+            "@tag2=bar PRIVMSG #chan :hello",
+            "@tag1=bar;tag2= PRIVMSG #chan :hello",
+            "@tag1=;tag2=bar PRIVMSG #chan :hello",
+        ],
+        # and does not match:
+        [
+            "PRIVMG #chan :hello",
+            "@tag1=value1 PRIVMSG #chan :hello",
+            "PRIVMSG #chan hello2",
+            "PRIVMSG #chan2 hello",
+            ":foo!baz@qux PRIVMSG #chan hello",
+        ],
+        # and they each error with:
+        [
+            "expected command to be PRIVMSG, got PRIVMG",
+            "expected tags to match {StrRe(r'tag[12]'): 'bar', RemainingKeys(ANYSTR): ANYOPTSTR}, got {'tag1': 'value1'}",
+            "expected params to match ['#chan', 'hello'], got ['#chan', 'hello2']",
+            "expected params to match ['#chan', 'hello'], got ['#chan2', 'hello']",
+            "expected tags to match {StrRe(r'tag[12]'): 'bar', RemainingKeys(ANYSTR): ANYOPTSTR}, got {}",
+        ]
+    ),
+    (
+        # the specification:
+        dict(
+            tags={"tag1": "bar", RemainingKeys(NotStrRe("tag2")): ANYOPTSTR},
             command="PRIVMSG",
             params=["#chan", "hello"],
         ),
@@ -150,6 +231,98 @@ MESSAGE_SPECS: List[Tuple[Dict, List[str], List[str]]] = [
             "@tag1=value1 PRIVMSG #chan :hello",
             "@tag1=bar;tag2= PRIVMSG #chan :hello",
             "@tag1=bar;tag2=baz PRIVMSG #chan :hello",
+        ],
+        # and they each error with:
+        [
+            "expected command to be PRIVMSG, got PRIVMG",
+            "expected tags to match {'tag1': 'bar', RemainingKeys(NotStrRe(r'tag2')): ANYOPTSTR}, got {'tag1': 'value1'}",
+            "expected tags to match {'tag1': 'bar', RemainingKeys(NotStrRe(r'tag2')): ANYOPTSTR}, got {'tag1': 'bar', 'tag2': ''}",
+            "expected tags to match {'tag1': 'bar', RemainingKeys(NotStrRe(r'tag2')): ANYOPTSTR}, got {'tag1': 'bar', 'tag2': 'baz'}",
+        ]
+    ),
+    (
+        # the specification:
+        dict(
+            command="005",
+            params=["nick", "FOO=1", *ANYLIST],
+        ),
+        # matches:
+        [
+            "005 nick FOO=1",
+            "005 nick FOO=1 BAR=2",
+        ],
+        # and does not match:
+        [
+            "005 nick",
+            "005 nick BAR=2",
+        ],
+        # and they each error with:
+        [
+            "expected params to match ['nick', 'FOO=1', *ANYLIST], got ['nick']",
+            "expected params to match ['nick', 'FOO=1', *ANYLIST], got ['nick', 'BAR=2']",
+        ]
+    ),
+    (
+        # the specification:
+        dict(
+            command="005",
+            params=["nick", ListRemainder(ANYSTR, min_length=1)],
+        ),
+        # matches:
+        [
+            "005 nick FOO=1",
+            "005 nick FOO=1 BAR=2",
+            "005 nick BAR=2",
+        ],
+        # and does not match:
+        [
+            "005 nick",
+        ],
+        # and they each error with:
+        [
+            "expected params to match ['nick', ListRemainder(ANYSTR, min_length=1)], got ['nick']",
+        ]
+    ),
+    (
+        # the specification:
+        dict(
+            command="005",
+            params=["nick", ListRemainder(StrRe("[A-Z]+=.*"), min_length=1)],
+        ),
+        # matches:
+        [
+            "005 nick FOO=1",
+            "005 nick FOO=1 BAR=2",
+            "005 nick BAR=2",
+        ],
+        # and does not match:
+        [
+            "005 nick",
+            "005 nick foo=1",
+        ],
+        # and they each error with:
+        [
+            "expected params to match ['nick', ListRemainder(StrRe(r'[A-Z]+=.*'), min_length=1)], got ['nick']",
+            "expected params to match ['nick', ListRemainder(StrRe(r'[A-Z]+=.*'), min_length=1)], got ['nick', 'foo=1']",
+        ]
+    ),
+    (
+        # the specification:
+        dict(
+            command="PING",
+            params=["abc"]
+        ),
+        # matches:
+        [
+            "PING abc",
+        ],
+        # and does not match:
+        [
+            "PONG def"
+        ],
+        # and they each error with:
+        [
+            "expected command to be PING, got PONG"
         ]
     ),
 ]
@@ -161,7 +334,7 @@ class IrcTestCaseTestCase(cases._IrcTestCase):
         "spec,msg",
         [
             pytest.param(spec, msg, id=f"{spec}-{msg}")
-            for (spec, positive_matches, _) in MESSAGE_SPECS
+            for (spec, positive_matches, _, _) in MESSAGE_SPECS
             for msg in positive_matches
         ],
     )
@@ -174,7 +347,7 @@ class IrcTestCaseTestCase(cases._IrcTestCase):
         "spec,msg",
         [
             pytest.param(spec, msg, id=f"{spec}-{msg}")
-            for (spec, _, negative_matches) in MESSAGE_SPECS
+            for (spec, _, negative_matches, _) in MESSAGE_SPECS
             for msg in negative_matches
         ],
     )
@@ -183,3 +356,14 @@ class IrcTestCaseTestCase(cases._IrcTestCase):
         assert not self.messageEqual(parse_message(msg), **spec), msg
         with pytest.raises(AssertionError):
             self.assertMessageMatch(parse_message(msg), **spec), msg
+
+    @pytest.mark.parametrize(
+        "spec,msg,error_string",
+        [
+            pytest.param(spec, msg, error_string, id=error_string)
+            for (spec, _, negative_matches, error_stringgexps) in MESSAGE_SPECS
+            for (msg, error_string) in zip(negative_matches, error_stringgexps)
+        ],
+    )
+    def test_message_matching_negative_message(self, spec, msg, error_string):
+        self.assertIn(error_string, self.messageDiffers(parse_message(msg), **spec))

irctest/server_tests/account_registration.py

@@ -1,9 +1,15 @@
+"""
+`Draft IRCv3 account-registration
+<https://ircv3.net/specs/extensions/account-registration>`_
+"""
+
 from irctest import cases
 from irctest.patma import ANYSTR
 
 REGISTER_CAP_NAME = "draft/account-registration"
 
 
+@cases.mark_services
 @cases.mark_specifications("IRCv3")
 class RegisterBeforeConnectTestCase(cases.BaseServerTestCase):
     @staticmethod
@@ -28,6 +34,7 @@ class RegisterBeforeConnectTestCase(cases.BaseServerTestCase):
         self.assertMessageMatch(register_response, params=["SUCCESS", ANYSTR, ANYSTR])
 
 
+@cases.mark_services
 @cases.mark_specifications("IRCv3")
 class RegisterBeforeConnectDisallowedTestCase(cases.BaseServerTestCase):
     @staticmethod
@@ -55,6 +62,7 @@ class RegisterBeforeConnectDisallowedTestCase(cases.BaseServerTestCase):
         )
 
 
+@cases.mark_services
 @cases.mark_specifications("IRCv3")
 class RegisterEmailVerifiedTestCase(cases.BaseServerTestCase):
     @staticmethod
@@ -105,6 +113,7 @@ class RegisterEmailVerifiedTestCase(cases.BaseServerTestCase):
         )
 
 
+@cases.mark_services
 @cases.mark_specifications("IRCv3", "Ergo")
 class RegisterNoLandGrabsTestCase(cases.BaseServerTestCase):
     @staticmethod

irctest/server_tests/account_tag.py

@@ -1,12 +1,12 @@
 """
-<http://ircv3.net/specs/extensions/account-tag-3.2.html>
+`IRCv3 account-tag <https://ircv3.net/specs/extensions/account-tag>`_
 """
 
 from irctest import cases
 
 
 @cases.mark_services
-class AccountTagTestCase(cases.BaseServerTestCase, cases.OptionalityHelper):
+class AccountTagTestCase(cases.BaseServerTestCase):
     def connectRegisteredClient(self, nick):
         self.addClient()
         self.sendLine(2, "CAP LS 302")
@@ -40,7 +40,7 @@ class AccountTagTestCase(cases.BaseServerTestCase, cases.OptionalityHelper):
         self.skipToWelcome(2)
 
     @cases.mark_capabilities("account-tag")
-    @cases.OptionalityHelper.skipUnlessHasMechanism("PLAIN")
+    @cases.skipUnlessHasMechanism("PLAIN")
     def testPrivmsg(self):
         self.connectClient("foo", capabilities=["account-tag"], skip_if_cap_nak=True)
         self.getMessages(1)
@@ -54,7 +54,10 @@ class AccountTagTestCase(cases.BaseServerTestCase, cases.OptionalityHelper):
         )
 
     @cases.mark_capabilities("account-tag")
-    @cases.OptionalityHelper.skipUnlessHasMechanism("PLAIN")
+    @cases.skipUnlessHasMechanism("PLAIN")
+    @cases.xfailIfSoftware(
+        ["Charybdis"], "https://github.com/solanum-ircd/solanum/issues/166"
+    )
     def testInvite(self):
         self.connectClient("foo", capabilities=["account-tag"], skip_if_cap_nak=True)
         self.getMessages(1)

irctest/server_tests/away.py

@@ -1,5 +1,16 @@
+"""
+AWAY command (`RFC 2812 <https://datatracker.ietf.org/doc/html/rfc2812#section-4.1>`__,
+`Modern <https://modern.ircdocs.horse/#away-message>`__)
+"""
+
 from irctest import cases
-from irctest.numerics import RPL_AWAY, RPL_NOWAWAY, RPL_UNAWAY, RPL_USERHOST
+from irctest.numerics import (
+    RPL_AWAY,
+    RPL_NOWAWAY,
+    RPL_UNAWAY,
+    RPL_USERHOST,
+    RPL_WHOISUSER,
+)
 from irctest.patma import StrRe
 
 
@@ -32,7 +43,7 @@ class AwayTestCase(cases.BaseServerTestCase):
         """
         "The server acknowledges the change in away status by returning the
         `RPL_NOWAWAY` and `RPL_UNAWAY` numerics."
-        -- https://github.com/ircdocs/modern-irc/pull/100
+        -- https://modern.ircdocs.horse/#away-message
         """
         self.connectClient("bar")
         self.sendLine(1, "AWAY :I'm not here right now")
@@ -48,7 +59,7 @@ class AwayTestCase(cases.BaseServerTestCase):
         """
         "Servers SHOULD notify clients when a user they're interacting with
         is away when relevant"
-        -- https://github.com/ircdocs/modern-irc/pull/100
+        -- https://modern.ircdocs.horse/#away-message
 
         "<client> <nick> :<message>"
         -- https://modern.ircdocs.horse/#rplaway-301
@@ -75,7 +86,7 @@ class AwayTestCase(cases.BaseServerTestCase):
         """
         "Servers SHOULD notify clients when a user they're interacting with
         is away when relevant"
-        -- https://github.com/ircdocs/modern-irc/pull/100
+        -- https://modern.ircdocs.horse/#away-message
 
         "<client> <nick> :<message>"
         -- https://modern.ircdocs.horse/#rplaway-301
@@ -113,7 +124,7 @@ class AwayTestCase(cases.BaseServerTestCase):
         """
         "Servers SHOULD notify clients when a user they're interacting with
         is away when relevant"
-        -- https://github.com/ircdocs/modern-irc/pull/100
+        -- https://modern.ircdocs.horse/#away-message
 
         "<client> <nick> :<message>"
         -- https://modern.ircdocs.horse/#rplaway-301
@@ -134,3 +145,33 @@ class AwayTestCase(cases.BaseServerTestCase):
         self.assertMessageMatch(
             self.getMessage(2), command=RPL_USERHOST, params=["qux", StrRe(r"bar=-.*")]
         )
+
+    @cases.mark_specifications("Modern")
+    def testAwayEmptyMessage(self):
+        """
+        "If [AWAY] is sent with a nonempty parameter (the 'away message')
+        then the user is set to be away. If this command is sent with no
+        parameters, or with the empty string as the parameter, the user is no
+        longer away."
+        -- https://modern.ircdocs.horse/#away-message
+        """
+        self.connectClient("bar", name="bar")
+        self.connectClient("qux", name="qux")
+
+        self.sendLine("bar", "AWAY :I'm not here right now")
+        replies = self.getMessages("bar")
+        self.assertIn(RPL_NOWAWAY, [msg.command for msg in replies])
+        self.sendLine("qux", "WHOIS bar")
+        replies = self.getMessages("qux")
+        self.assertIn(RPL_WHOISUSER, [msg.command for msg in replies])
+        self.assertIn(RPL_AWAY, [msg.command for msg in replies])
+
+        # empty final parameter to AWAY is treated the same as no parameter,
+        # i.e., the client is considered to be no longer away
+        self.sendLine("bar", "AWAY :")
+        replies = self.getMessages("bar")
+        self.assertIn(RPL_UNAWAY, [msg.command for msg in replies])
+        self.sendLine("qux", "WHOIS bar")
+        replies = self.getMessages("qux")
+        self.assertIn(RPL_WHOISUSER, [msg.command for msg in replies])
+        self.assertNotIn(RPL_AWAY, [msg.command for msg in replies])

irctest/server_tests/away_notify.py

@@ -1,11 +1,11 @@
 """
-<https://ircv3.net/specs/extensions/away-notify-3.1>
+`IRCv3 away-notify <https://ircv3.net/specs/extensions/away-notify>`_
 """
 
 from irctest import cases
 
 
-class AwayNotifyTestCase(cases.BaseServerTestCase, cases.OptionalityHelper):
+class AwayNotifyTestCase(cases.BaseServerTestCase):
     @cases.mark_capabilities("away-notify")
     def testAwayNotify(self):
         """Basic away-notify test."""

irctest/server_tests/bot_mode.py

@@ -1,6 +1,5 @@
 """
-Draft bot mode specification, as defined in
-<https://ircv3.net/specs/extensions/bot-mode>
+`IRCv3 bot mode <https://ircv3.net/specs/extensions/bot-mode>`_
 """
 
 from irctest import cases, runner
@@ -68,6 +67,10 @@ class BotModeTestCase(cases.BaseServerTestCase):
             message, command=RPL_WHOISBOT, params=["usernick", "botnick", ANYSTR]
         )
 
+    @cases.xfailIfSoftware(
+        ["InspIRCd"],
+        "Uses only vendor tags for now: https://github.com/inspircd/inspircd/pull/1910",
+    )
     def testBotPrivateMessage(self):
         self._initBot()
 
@@ -82,9 +85,13 @@ class BotModeTestCase(cases.BaseServerTestCase):
             self.getMessage("user"),
             command="PRIVMSG",
             params=["usernick", "beep boop"],
-            tags={"draft/bot": None, **ANYDICT},
+            tags={StrRe("(draft/)?bot"): None, **ANYDICT},
         )
 
+    @cases.xfailIfSoftware(
+        ["InspIRCd"],
+        "Uses only vendor tags for now: https://github.com/inspircd/inspircd/pull/1910",
+    )
     def testBotChannelMessage(self):
         self._initBot()
 
@@ -104,7 +111,7 @@ class BotModeTestCase(cases.BaseServerTestCase):
             self.getMessage("user"),
             command="PRIVMSG",
             params=["#chan", "beep boop"],
-            tags={"draft/bot": None, **ANYDICT},
+            tags={StrRe("(draft/)?bot"): None, **ANYDICT},
         )
 
     def testBotWhox(self):

irctest/server_tests/bouncer.py

@@ -1,3 +1,9 @@
+"""
+`Ergo <https://ergo.chat/>`_-specific tests of
+`multiclient features
+<https://github.com/ergochat/ergo/blob/master/docs/MANUAL.md#multiclient-bouncer>`_
+"""
+
 from irctest import cases
 from irctest.irc_utils.sasl import sasl_plain_blob
 from irctest.numerics import ERR_NICKNAMEINUSE, RPL_WELCOME

irctest/server_tests/buffering.py

@@ -1,5 +1,7 @@
-"""Sends packets with various length to check the server reassembles them
-correctly. Also checks truncation"""
+"""
+Sends packets with various length to check the server reassembles them
+correctly. Also checks truncation.
+"""
 
 import socket
 import time
@@ -30,6 +32,16 @@ def _sendBytePerByte(self, line):
 
 
 class BufferingTestCase(cases.BaseServerTestCase):
+    @cases.xfailIfSoftware(
+        ["Bahamut"],
+        "cannot pass because of issues with UTF-8 handling: "
+        "https://github.com/DALnet/bahamut/issues/196",
+    )
+    @cases.xfailIfSoftware(
+        ["ircu2", "Nefarious", "snircd"],
+        "ircu2 discards the whole buffer on long lines "
+        "(TODO: refine how we exclude these tests)",
+    )
     @pytest.mark.parametrize(
         "sender_function,colon",
         [

irctest/server_tests/cap.py

@@ -1,9 +1,14 @@
+"""
+`IRCv3 Capability negotiation
+<https://ircv3.net/specs/extensions/capability-negotiation>`_
+"""
+
 from irctest import cases
 from irctest.patma import ANYSTR
 from irctest.runner import CapabilityNotSupported, ImplementationChoice
 
 
-class CapTestCase(cases.BaseServerTestCase, cases.OptionalityHelper):
+class CapTestCase(cases.BaseServerTestCase):
     @cases.mark_specifications("IRCv3")
     def testNoReq(self):
         """Test the server handles gracefully clients which do not send
@@ -73,6 +78,10 @@ class CapTestCase(cases.BaseServerTestCase, cases.OptionalityHelper):
         )
 
     @cases.mark_specifications("IRCv3")
+    @cases.xfailIfSoftware(
+        ["UnrealIRCd"],
+        "UnrealIRCd sends a trailing space on CAP NAK: https://github.com/unrealircd/unrealircd/pull/148",
+    )
     def testNakWhole(self):
         """“The capability identifier set must be accepted as a whole, or
         rejected entirely.”
@@ -120,6 +129,10 @@ class CapTestCase(cases.BaseServerTestCase, cases.OptionalityHelper):
         )
 
     @cases.mark_specifications("IRCv3")
+    @cases.xfailIfSoftware(
+        ["UnrealIRCd"],
+        "UnrealIRCd sends a trailing space on CAP NAK: https://github.com/unrealircd/unrealircd/pull/148",
+    )
     def testCapRemovalByClient(self):
         """Test CAP LIST and removal of caps via CAP REQ :-tagname."""
         cap1 = "echo-message"
@@ -172,3 +185,60 @@ class CapTestCase(cases.BaseServerTestCase, cases.OptionalityHelper):
         enabled_caps.discard("cap-notify")  # implicitly added by some impls
         self.assertEqual(enabled_caps, {cap1})
         self.assertNotIn("time", cap_list.tags)
+
+    @cases.mark_specifications("IRCv3")
+    def testIrc301CapLs(self):
+        """
+        Current version:
+
+        "The LS subcommand is used to list the capabilities supported by the server.
+        The client should send an LS subcommand with no other arguments to solicit
+        a list of all capabilities."
+
+        "If a client has not indicated support for CAP LS 302 features,
+        the server MUST NOT send these new features to the client."
+        -- <https://ircv3.net/specs/core/capability-negotiation.html>
+
+        Before the v3.1 / v3.2 merge:
+
+        IRCv3.1: “The LS subcommand is used to list the capabilities
+        supported by the server. The client should send an LS subcommand with
+        no other arguments to solicit a list of all capabilities.”
+        -- <http://ircv3.net/specs/core/capability-negotiation-3.1.html#the-cap-ls-subcommand>
+
+        IRCv3.2: “Servers MUST NOT send messages described by this document if
+        the client only supports version 3.1.”
+        -- <http://ircv3.net/specs/core/capability-negotiation-3.2.html#version-in-cap-ls>
+        """  # noqa
+        self.addClient()
+        self.sendLine(1, "CAP LS")
+        m = self.getRegistrationMessage(1)
+        self.assertNotEqual(
+            m.params[2],
+            "*",
+            m,
+            fail_msg="Server replied with multi-line CAP LS to a "
+            "“CAP LS” (ie. IRCv3.1) request: {msg}",
+        )
+        self.assertFalse(
+            any("=" in cap for cap in m.params[2].split()),
+            "Server replied with a name-value capability in "
+            "CAP LS reply as a response to “CAP LS” (ie. IRCv3.1) "
+            "request: {}".format(m),
+        )
+
+    @cases.mark_specifications("IRCv3")
+    def testEmptyCapList(self):
+        """“If no capabilities are active, an empty parameter must be sent.”
+        -- <http://ircv3.net/specs/core/capability-negotiation-3.1.html#the-cap-list-subcommand>
+        """  # noqa
+        self.addClient()
+        self.sendLine(1, "CAP LIST")
+        m = self.getRegistrationMessage(1)
+        self.assertMessageMatch(
+            m,
+            command="CAP",
+            params=["*", "LIST", ""],
+            fail_msg="Sending “CAP LIST” as first message got a reply "
+            "that is not “CAP * LIST :”: {msg}",
+        )

irctest/server_tests/channel.py

@@ -1,3 +1,7 @@
+"""
+Channel casemapping
+"""
+
 import pytest
 
 from irctest import cases, client_mock, runner
@@ -18,7 +22,7 @@ class ChannelCaseSensitivityTestCase(cases.BaseServerTestCase):
         self.connectClient("foo")
         self.connectClient("bar")
         if self.server_support["CASEMAPPING"] != casemapping:
-            raise runner.NotImplementedByController(
+            raise runner.ImplementationChoice(
                 "Casemapping {} not implemented".format(casemapping)
             )
         self.joinClient(1, name1)
@@ -43,7 +47,7 @@ class ChannelCaseSensitivityTestCase(cases.BaseServerTestCase):
         self.connectClient("foo")
         self.connectClient("bar")
         if self.server_support["CASEMAPPING"] != casemapping:
-            raise runner.NotImplementedByController(
+            raise runner.ImplementationChoice(
                 "Casemapping {} not implemented".format(casemapping)
             )
         self.joinClient(1, name1)

irctest/server_tests/channel_forward.py

@@ -1,3 +1,9 @@
+"""
+`Ergo <https://ergo.chat/>`_-specific tests of channel forwarding
+
+TODO: Should be extended to other servers, once a specification is written.
+"""
+
 from irctest import cases
 from irctest.numerics import ERR_CHANOPRIVSNEEDED, ERR_INVALIDMODEPARAM, ERR_LINKCHANNEL
 

irctest/server_tests/channel_rename.py

@@ -1,24 +1,22 @@
+"""
+`Draft IRCv3 channel-rename <https://ircv3.net/specs/extensions/channel-rename>`_
+"""
+
 from irctest import cases
 from irctest.numerics import ERR_CHANOPRIVSNEEDED
 
-MODERN_CAPS = [
-    "server-time",
-    "message-tags",
-    "batch",
-    "labeled-response",
-    "echo-message",
-    "account-tag",
-]
 RENAME_CAP = "draft/channel-rename"
 
 
+@cases.mark_specifications("IRCv3")
 class ChannelRenameTestCase(cases.BaseServerTestCase):
     """Basic tests for channel-rename."""
 
-    @cases.mark_specifications("Ergo")
     def testChannelRename(self):
-        self.connectClient("bar", name="bar", capabilities=MODERN_CAPS + [RENAME_CAP])
-        self.connectClient("baz", name="baz", capabilities=MODERN_CAPS)
+        self.connectClient(
+            "bar", name="bar", capabilities=[RENAME_CAP], skip_if_cap_nak=True
+        )
+        self.connectClient("baz", name="baz")
         self.joinChannel("bar", "#bar")
         self.joinChannel("baz", "#bar")
         self.getMessages("bar")

irctest/server_tests/chathistory.py

@@ -1,9 +1,14 @@
+"""
+`IRCv3 draft chathistory <https://ircv3.net/specs/extensions/chathistory>`_
+"""
+
+import functools
 import secrets
 import time
 
 import pytest
 
-from irctest import cases
+from irctest import cases, runner
 from irctest.irc_utils.junkdrawer import random_name
 from irctest.patma import ANYSTR
 
@@ -38,6 +43,16 @@ def validate_chathistory_batch(msgs):
     return result
 
 
+def skip_ngircd(f):
+    @functools.wraps(f)
+    def newf(self, *args, **kwargs):
+        if self.controller.software_name == "ngIRCd":
+            raise runner.OptionalExtensionNotSupported("nicks longer 9 characters")
+        return f(self, *args, **kwargs)
+
+    return newf
+
+
 @cases.mark_specifications("IRCv3")
 @cases.mark_services
 class ChathistoryTestCase(cases.BaseServerTestCase):
@@ -45,6 +60,7 @@ class ChathistoryTestCase(cases.BaseServerTestCase):
     def config() -> cases.TestCaseControllerConfig:
         return cases.TestCaseControllerConfig(chathistory=True)
 
+    @skip_ngircd
     def testInvalidTargets(self):
         bar, pw = random_name("bar"), random_name("pw")
         self.controller.registerUser(self, bar, pw)
@@ -90,6 +106,7 @@ class ChathistoryTestCase(cases.BaseServerTestCase):
         )
 
     @pytest.mark.private_chathistory
+    @skip_ngircd
     def testMessagesToSelf(self):
         bar, pw = random_name("bar"), random_name("pw")
         self.controller.registerUser(self, bar, pw)
@@ -162,7 +179,19 @@ class ChathistoryTestCase(cases.BaseServerTestCase):
         self.assertEqual(len(set(msg.time for msg in echo_messages)), num_messages)
 
     @pytest.mark.parametrize("subcommand", SUBCOMMANDS)
+    @skip_ngircd
     def testChathistory(self, subcommand):
+        if subcommand == "BETWEEN" and self.controller.software_name == "UnrealIRCd":
+            pytest.xfail(
+                "CHATHISTORY BETWEEN does not apply bounds correct "
+                "https://bugs.unrealircd.org/view.php?id=5952"
+            )
+        if subcommand == "AROUND" and self.controller.software_name == "UnrealIRCd":
+            pytest.xfail(
+                "CHATHISTORY AROUND excludes 'central' messages "
+                "https://bugs.unrealircd.org/view.php?id=5953"
+            )
+
         self.connectClient(
             "bar",
             capabilities=[
@@ -194,6 +223,7 @@ class ChathistoryTestCase(cases.BaseServerTestCase):
         self.validate_chathistory(subcommand, echo_messages, 1, chname)
 
     @pytest.mark.parametrize("subcommand", SUBCOMMANDS)
+    @skip_ngircd
     def testChathistoryEventPlayback(self, subcommand):
         self.connectClient(
             "bar",
@@ -227,6 +257,7 @@ class ChathistoryTestCase(cases.BaseServerTestCase):
 
     @pytest.mark.parametrize("subcommand", SUBCOMMANDS)
     @pytest.mark.private_chathistory
+    @skip_ngircd
     def testChathistoryDMs(self, subcommand):
         c1 = "foo" + secrets.token_hex(12)
         c2 = "bar" + secrets.token_hex(12)
@@ -549,6 +580,7 @@ class ChathistoryTestCase(cases.BaseServerTestCase):
         self.assertIn(echo_messages[7], result)
 
     @pytest.mark.arbitrary_client_tags
+    @skip_ngircd
     def testChathistoryTagmsg(self):
         c1 = "foo" + secrets.token_hex(12)
         c2 = "bar" + secrets.token_hex(12)
@@ -647,6 +679,7 @@ class ChathistoryTestCase(cases.BaseServerTestCase):
 
     @pytest.mark.arbitrary_client_tags
     @pytest.mark.private_chathistory
+    @skip_ngircd
     def testChathistoryDMClientOnlyTags(self):
         # regression test for Ergo #1411
         c1 = "foo" + secrets.token_hex(12)

irctest/server_tests/chmodes/auditorium.py

@@ -1,3 +1,9 @@
+"""
+`Ergo <https://ergo.chat/>`_-specific tests of auditorium mode
+
+TODO: Should be extended to other servers, once a specification is written.
+"""
+
 import math
 import time
 

irctest/server_tests/chmodes/ban.py

@@ -1,9 +1,18 @@
-from irctest import cases
-from irctest.numerics import ERR_BANNEDFROMCHAN
+"""
+Channel ban (`RFC 1459
+<https://datatracker.ietf.org/doc/html/rfc1459#section-4.2.3.1>`__,
+`RFC 2812 <https://datatracker.ietf.org/doc/html/rfc2812#section-3.2.3>`__,
+`Modern <https://modern.ircdocs.horse/#ban-channel-mode>`__)
+and ban exception (`Modern <https://modern.ircdocs.horse/#exception-channel-mode>`__)
+"""
+
+from irctest import cases, runner
+from irctest.numerics import ERR_BANNEDFROMCHAN, RPL_BANLIST, RPL_ENDOFBANLIST
+from irctest.patma import ANYSTR, StrRe
 
 
 class BanModeTestCase(cases.BaseServerTestCase):
-    @cases.mark_specifications("RFC1459", "RFC2812")
+    @cases.mark_specifications("RFC1459", "RFC2812", "Modern")
     def testBan(self):
         """Basic ban operation"""
         self.connectClient("chanop", name="chanop")
@@ -23,6 +32,111 @@ class BanModeTestCase(cases.BaseServerTestCase):
         self.sendLine("bar", "JOIN #chan")
         self.assertMessageMatch(self.getMessage("bar"), command="JOIN")
 
+    @cases.mark_specifications("Modern")
+    def testBanList(self):
+        """`RPL_BANLIST <https://modern.ircdocs.horse/#rplbanlist-367>`_"""
+        self.connectClient("chanop")
+        self.joinChannel(1, "#chan")
+        self.getMessages(1)
+        self.sendLine(1, "MODE #chan +b bar!*@*")
+        self.assertMessageMatch(self.getMessage(1), command="MODE")
+
+        self.sendLine(1, "MODE #chan +b")
+
+        m = self.getMessage(1)
+        if len(m.params) == 3:
+            # Old format
+            self.assertMessageMatch(
+                m,
+                command=RPL_BANLIST,
+                params=[
+                    "chanop",
+                    "#chan",
+                    "bar!*@*",
+                ],
+            )
+        else:
+            self.assertMessageMatch(
+                m,
+                command=RPL_BANLIST,
+                params=[
+                    "chanop",
+                    "#chan",
+                    "bar!*@*",
+                    StrRe("chanop(!.*@.*)?"),
+                    StrRe("[0-9]+"),
+                ],
+            )
+
+        self.assertMessageMatch(
+            self.getMessage(1),
+            command=RPL_ENDOFBANLIST,
+            params=[
+                "chanop",
+                "#chan",
+                ANYSTR,
+            ],
+        )
+
+    @cases.mark_specifications("Modern")
+    def testBanException(self):
+        """`Exception mode <https://modern.ircdocs.horse/#exception-channel-mode`_,
+        detected using `ISUPPORT EXCEPTS
+        <https://modern.ircdocs.horse/#excepts-parameter>`_ and checked against
+        `ISUPPORT CHANMODES <https://modern.ircdocs.horse/#chanmodes-parameter>`_"""
+        self.connectClient("chanop", name="chanop")
+
+        if "EXCEPTS" in self.server_support:
+            mode = self.server_support["EXCEPTS"] or "e"
+            if "CHANMODES" in self.server_support:
+                self.assertIn(
+                    mode,
+                    self.server_support["CHANMODES"],
+                    fail_msg="ISUPPORT EXCEPTS is present, but '{item}' is missing "
+                    "from 'CHANMODES={list}'",
+                )
+                self.assertIn(
+                    mode,
+                    self.server_support["CHANMODES"].split(",")[0],
+                    fail_msg="ISUPPORT EXCEPTS is present, but '{item}' is not "
+                    "in group A",
+                )
+        else:
+            mode = "e"
+            if "CHANMODES" in self.server_support:
+                if "e" not in self.server_support["CHANMODES"]:
+                    raise runner.OptionalExtensionNotSupported(
+                        "Ban exception (or mode letter is not +e)"
+                    )
+                self.assertIn(
+                    mode,
+                    self.server_support["CHANMODES"].split(",")[0],
+                    fail_msg="Mode +e (assumed to be ban exception) is present, "
+                    "but 'e' is not in group A",
+                )
+            else:
+                raise runner.OptionalExtensionNotSupported("ISUPPORT CHANMODES")
+
+        self.sendLine("chanop", "JOIN #chan")
+        self.getMessages("chanop")
+        self.sendLine("chanop", "MODE #chan +b ba*!*@*")
+        self.getMessages("chanop")
+
+        # banned client cannot join
+        self.connectClient("Bar", name="bar")
+        self.sendLine("bar", "JOIN #chan")
+        self.assertMessageMatch(self.getMessage("bar"), command=ERR_BANNEDFROMCHAN)
+
+        # chanop sets exception
+        self.sendLine("chanop", "MODE #chan +e *ar!*@*")
+        self.assertMessageMatch(self.getMessage("chanop"), command="MODE")
+
+        # client can now join
+        self.sendLine("bar", "JOIN #chan")
+        self.assertMessageMatch(self.getMessage("bar"), command="JOIN")
+
+    # TODO: Add testBanExceptionList, once the numerics are specified in Modern
+
     @cases.mark_specifications("Ergo")
     def testCaseInsensitive(self):
         """Some clients allow unsetting modes if their argument matches

irctest/server_tests/chmodes/ergo.py

@@ -1,3 +1,7 @@
+"""
+Various Ergo-specific channel modes
+"""
+
 from irctest import cases
 from irctest.numerics import ERR_CANNOTSENDTOCHAN, ERR_CHANOPRIVSNEEDED
 

irctest/server_tests/chmodes/key.py

@@ -1,3 +1,10 @@
+"""
+Channel key (`RFC 1459
+<https://datatracker.ietf.org/doc/html/rfc1459#section-4.2.3.1>`__,
+`RFC 2812 <https://datatracker.ietf.org/doc/html/rfc2812#section-3.2.3>`__,
+`Modern <https://modern.ircdocs.horse/#key-channel-mode>`__)
+"""
+
 import pytest
 
 from irctest import cases
@@ -20,10 +27,16 @@ class KeyTestCase(cases.BaseServerTestCase):
 
         self.connectClient("qux")
         self.getMessages(2)
+        # JOIN with a missing key MUST receive ERR_BADCHANNELKEY:
         self.sendLine(2, "JOIN #chan")
-        reply = self.getMessages(2)
-        self.assertNotIn("JOIN", {msg.command for msg in reply})
-        self.assertIn(ERR_BADCHANNELKEY, {msg.command for msg in reply})
+        reply_cmds = {msg.command for msg in self.getMessages(2)}
+        self.assertNotIn("JOIN", reply_cmds)
+        self.assertIn(ERR_BADCHANNELKEY, reply_cmds)
+        # similarly for JOIN with an incorrect key:
+        self.sendLine(2, "JOIN #chan bees")
+        reply_cmds = {msg.command for msg in self.getMessages(2)}
+        self.assertNotIn("JOIN", reply_cmds)
+        self.assertIn(ERR_BADCHANNELKEY, reply_cmds)
 
         self.sendLine(2, "JOIN #chan beer")
         reply = self.getMessages(2)
@@ -57,6 +70,21 @@ class KeyTestCase(cases.BaseServerTestCase):
         -- https://modern.ircdocs.horse/#key-channel-mode
         -- https://github.com/ircdocs/modern-irc/pull/111
         """
+        if key == "" and self.controller.software_name in (
+            "ircu2",
+            "Nefarious",
+            "snircd",
+        ):
+            pytest.xfail(
+                "ircu2 returns ERR_NEEDMOREPARAMS on empty keys: "
+                "https://github.com/UndernetIRC/ircu2/issues/13"
+            )
+        if (key == "" or " " in key) and self.controller.software_name == "ngIRCd":
+            pytest.xfail(
+                "ngIRCd does not validate channel keys: "
+                "https://github.com/ngircd/ngircd/issues/290"
+            )
+
         self.connectClient("bar")
         self.joinChannel(1, "#chan")
         self.sendLine(1, f"MODE #chan +k :{key}")

irctest/server_tests/chmodes/moderated.py

@@ -1,3 +1,9 @@
+"""
+Channel moderation mode (`RFC 2812
+<https://datatracker.ietf.org/doc/html/rfc2812#section-3.2.3>`__,
+`Modern <https://modern.ircdocs.horse/#ban-channel-mode>`__)
+"""
+
 from irctest import cases
 from irctest.numerics import ERR_CANNOTSENDTOCHAN
 

irctest/server_tests/chmodes/mute_extban.py

@@ -1,3 +1,7 @@
+"""
+Mute extban, currently no specifications or ways to discover it.
+"""
+
 from irctest import cases, runner
 from irctest.numerics import ERR_CANNOTSENDTOCHAN, ERR_CHANOPRIVSNEEDED
 from irctest.patma import ANYLIST, StrRe
@@ -16,7 +20,7 @@ class MuteExtbanTestCase(cases.BaseServerTestCase):
 
     @cases.mark_specifications("Ergo")
     def testISupport(self):
-        self.connectClient(1)  # Fetches ISUPPORT
+        self.connectClient("chk")  # Fetches ISUPPORT
         isupport = self.server_support
         token = isupport["EXTBAN"]
         prefix, comma, types = token.partition(",")
@@ -194,7 +198,7 @@ class MuteExtbanTestCase(cases.BaseServerTestCase):
             self.getMessages(client)
 
         # +e grants an exemption to +b
-        self.sendLine("chanop", f"MODE #chan +e {prefix}{self.char()}:*!~evan@*")
+        self.sendLine("chanop", f"MODE #chan +e {prefix}{self.char()}:*!*evan@*")
         replies = {msg.command for msg in self.getMessages("chanop")}
         self.assertIn("MODE", replies)
         self.assertNotIn(ERR_CHANOPRIVSNEEDED, replies)

irctest/server_tests/chmodes/no_external.py

@@ -0,0 +1,38 @@
+"""
+Channel "no external messages" mode (`RFC 1459
+<https://datatracker.ietf.org/doc/html/rfc1459#section-4.2.3.1>`__,
+`Modern <https://modern.ircdocs.horse/#no-external-messages-mode>`__)
+"""
+
+from irctest import cases
+from irctest.numerics import ERR_CANNOTSENDTOCHAN
+
+
+class NoExternalMessagesTestCase(cases.BaseServerTestCase):
+    @cases.mark_specifications("RFC1459", "Modern")
+    def testNoExternalMessagesMode(self):
+        # test the +n channel mode
+        self.connectClient("chanop", name="chanop")
+        self.joinChannel("chanop", "#chan")
+        self.sendLine("chanop", "MODE #chan +n")
+        self.getMessages("chanop")
+
+        self.connectClient("baz", name="baz")
+        # this message should be suppressed completely by +n
+        self.sendLine("baz", "PRIVMSG #chan :hi from baz")
+        replies = self.getMessages("baz")
+        reply_cmds = {reply.command for reply in replies}
+        self.assertIn(ERR_CANNOTSENDTOCHAN, reply_cmds)
+        self.assertEqual(self.getMessages("chanop"), [])
+
+        # set the channel to -n: baz should be able to send now
+        self.sendLine("chanop", "MODE #chan -n")
+        replies = self.getMessages("chanop")
+        modeLines = [line for line in replies if line.command == "MODE"]
+        self.assertMessageMatch(modeLines[0], command="MODE", params=["#chan", "-n"])
+        self.sendLine("baz", "PRIVMSG #chan :hi again from baz")
+        self.getMessages("baz")
+        relays = self.getMessages("chanop")
+        self.assertMessageMatch(
+            relays[0], command="PRIVMSG", params=["#chan", "hi again from baz"]
+        )

irctest/server_tests/chmodes/secret.py

@@ -0,0 +1,62 @@
+"""
+Channel secrecy mode (`RFC 1459
+<https://datatracker.ietf.org/doc/html/rfc1459#section-4.2.3.1>`__,
+`RFC 2812 <https://datatracker.ietf.org/doc/html/rfc2812#section-3.2.3>`__,
+`Modern <https://modern.ircdocs.horse/#secret-channel-mode>`__)
+"""
+
+from irctest import cases
+from irctest.numerics import RPL_LIST
+
+
+class SecretChannelTestCase(cases.BaseServerTestCase):
+    @cases.mark_specifications("RFC1459", "Modern")
+    def testSecretChannelListCommand(self):
+        """
+        <https://datatracker.ietf.org/doc/html/rfc1459#section-4.2.6>
+
+        "Likewise, secret channels are not listed
+        at all unless the client is a member of the channel in question."
+
+        <https://modern.ircdocs.horse/#secret-channel-mode>
+        "A channel that is set to secret will not show up in responses to
+        the LIST or NAMES command unless the client sending the command is
+        joined to the channel."
+        """
+
+        def get_listed_channels(replies):
+            channels = set()
+            for reply in replies:
+                # skip pseudo-channels (&SERVER, &NOTICES) listed by ngircd
+                # and ircu:
+                if reply.command == RPL_LIST and reply.params[1].startswith("#"):
+                    channels.add(reply.params[1])
+            return channels
+
+        # test that a silent channel is shown in list if the user is in the channel.
+        self.connectClient("first", name="first")
+        self.joinChannel("first", "#gen")
+        self.getMessages("first")
+        self.sendLine("first", "MODE #gen +s")
+        # run command LIST
+        self.sendLine("first", "LIST")
+        replies = self.getMessages("first")
+        self.assertEqual(get_listed_channels(replies), {"#gen"})
+
+        # test that another client would not see the secret
+        # channel.
+        self.connectClient("second", name="second")
+        self.getMessages("second")
+        self.sendLine("second", "LIST")
+        replies = self.getMessages("second")
+        # RPL_LIST 322 should NOT be present this time.
+        self.assertEqual(get_listed_channels(replies), set())
+
+        # Second client will join the secret channel
+        # and call command LIST. The channel SHOULD
+        # appear this time.
+        self.joinChannel("second", "#gen")
+        self.sendLine("second", "LIST")
+        replies = self.getMessages("second")
+        # Should be only one line with command RPL_LIST
+        self.assertEqual(get_listed_channels(replies), {"#gen"})

irctest/server_tests/confusables.py

@@ -1,3 +1,8 @@
+"""
+`Ergo <https://ergo.chat/>`_-specific tests for nick collisions based on Unicode
+confusable characters
+"""
+
 from irctest import cases
 from irctest.numerics import ERR_NICKNAMEINUSE, RPL_WELCOME
 

irctest/server_tests/connection_registration.py

@@ -1,11 +1,13 @@
 """
 Tests section 4.1 of RFC 1459.
 <https://tools.ietf.org/html/rfc1459#section-4.1>
+
+TODO: cross-reference Modern and RFC 2812 too
 """
 
 from irctest import cases
 from irctest.client_mock import ConnectionClosed
-from irctest.numerics import ERR_NEEDMOREPARAMS
+from irctest.numerics import ERR_NEEDMOREPARAMS, ERR_PASSWDMISMATCH
 from irctest.patma import ANYSTR, StrRe
 
 
@@ -36,8 +38,14 @@ class PasswordedConnectionRegistrationTestCase(cases.BaseServerTestCase):
             m.command, "001", msg="Got 001 after NICK+USER but missing PASS"
         )
 
-    @cases.mark_specifications("RFC1459", "RFC2812")
+    @cases.mark_specifications("Modern")
     def testWrongPassword(self):
+        """
+        "If the password supplied does not match the password expected by the server,
+        then the server SHOULD send ERR_PASSWDMISMATCH and MUST close the connection
+        with ERROR."
+        -- https://github.com/ircdocs/modern-irc/pull/172
+        """
         self.addClient()
         self.sendLine(1, "PASS {}".format(self.password + "garbage"))
         self.sendLine(1, "NICK foo")
@@ -46,6 +54,13 @@ class PasswordedConnectionRegistrationTestCase(cases.BaseServerTestCase):
         self.assertNotEqual(
             m.command, "001", msg="Got 001 after NICK+USER but incorrect PASS"
         )
+        self.assertIn(m.command, {ERR_PASSWDMISMATCH, "ERROR"})
+
+        if m.command == "ERR_PASSWDMISMATCH":
+            m = self.getRegistrationMessage(1)
+            self.assertEqual(
+                m.command, "ERROR", msg="ERR_PASSWDMISMATCH not followed by ERROR."
+            )
 
     @cases.mark_specifications("RFC1459", "RFC2812", strict=True)
     def testPassAfterNickuser(self):
@@ -82,6 +97,10 @@ class ConnectionRegistrationTestCase(cases.BaseServerTestCase):
             self.getMessages(1)
 
     @cases.mark_specifications("RFC2812")
+    @cases.xfailIfSoftware(["Charybdis", "Solanum"], "very flaky")
+    @cases.xfailIfSoftware(
+        ["ircu2", "Nefarious", "snircd"], "ircu2 does not send ERROR"
+    )
     def testQuitErrors(self):
         """“A client session is terminated with a quit message.  The server
         acknowledges this by sending an ERROR message to the client.”
@@ -162,6 +181,10 @@ class ConnectionRegistrationTestCase(cases.BaseServerTestCase):
             "neither got 001.",
         )
 
+    @cases.xfailIfSoftware(
+        ["ircu2", "Nefarious", "ngIRCd"],
+        "uses a default value instead of ERR_NEEDMOREPARAMS",
+    )
     def testEmptyRealname(self):
         """
         Syntax:
@@ -183,60 +206,3 @@ class ConnectionRegistrationTestCase(cases.BaseServerTestCase):
             command=ERR_NEEDMOREPARAMS,
             params=[StrRe(r"(\*|foo)"), "USER", ANYSTR],
         )
-
-    @cases.mark_specifications("IRCv3")
-    def testIrc301CapLs(self):
-        """
-        Current version:
-
-        "The LS subcommand is used to list the capabilities supported by the server.
-        The client should send an LS subcommand with no other arguments to solicit
-        a list of all capabilities."
-
-        "If a client has not indicated support for CAP LS 302 features,
-        the server MUST NOT send these new features to the client."
-        -- <https://ircv3.net/specs/core/capability-negotiation.html>
-
-        Before the v3.1 / v3.2 merge:
-
-        IRCv3.1: “The LS subcommand is used to list the capabilities
-        supported by the server. The client should send an LS subcommand with
-        no other arguments to solicit a list of all capabilities.”
-        -- <http://ircv3.net/specs/core/capability-negotiation-3.1.html#the-cap-ls-subcommand>
-
-        IRCv3.2: “Servers MUST NOT send messages described by this document if
-        the client only supports version 3.1.”
-        -- <http://ircv3.net/specs/core/capability-negotiation-3.2.html#version-in-cap-ls>
-        """  # noqa
-        self.addClient()
-        self.sendLine(1, "CAP LS")
-        m = self.getRegistrationMessage(1)
-        self.assertNotEqual(
-            m.params[2],
-            "*",
-            m,
-            fail_msg="Server replied with multi-line CAP LS to a "
-            "“CAP LS” (ie. IRCv3.1) request: {msg}",
-        )
-        self.assertFalse(
-            any("=" in cap for cap in m.params[2].split()),
-            "Server replied with a name-value capability in "
-            "CAP LS reply as a response to “CAP LS” (ie. IRCv3.1) "
-            "request: {}".format(m),
-        )
-
-    @cases.mark_specifications("IRCv3")
-    def testEmptyCapList(self):
-        """“If no capabilities are active, an empty parameter must be sent.”
-        -- <http://ircv3.net/specs/core/capability-negotiation-3.1.html#the-cap-list-subcommand>
-        """  # noqa
-        self.addClient()
-        self.sendLine(1, "CAP LIST")
-        m = self.getRegistrationMessage(1)
-        self.assertMessageMatch(
-            m,
-            command="CAP",
-            params=["*", "LIST", ""],
-            fail_msg="Sending “CAP LIST” as first message got a reply "
-            "that is not “CAP * LIST :”: {msg}",
-        )

irctest/server_tests/echo_message.py

@@ -1,11 +1,10 @@
 """
-<http://ircv3.net/specs/extensions/echo-message-3.2.html>
+`IRCv3 echo-message <https://ircv3.net/specs/extensions/echo-message>`_
 """
 
 import pytest
 
 from irctest import cases
-from irctest.basecontrollers import NotImplementedByController
 from irctest.irc_utils.junkdrawer import random_name
 from irctest.patma import ANYDICT
 
@@ -23,31 +22,18 @@ class EchoMessageTestCase(cases.BaseServerTestCase):
     @cases.mark_capabilities("echo-message")
     def testEchoMessage(self, command, solo, server_time):
         """<http://ircv3.net/specs/extensions/echo-message-3.2.html>"""
-        self.addClient()
-        self.sendLine(1, "CAP LS 302")
-        capabilities = self.getCapLs(1)
-        if "echo-message" not in capabilities:
-            raise NotImplementedByController("echo-message")
-        if server_time and "server-time" not in capabilities:
-            raise NotImplementedByController("server-time")
-
-        # TODO: check also without this
-        self.sendLine(
-            1,
-            "CAP REQ :echo-message{}".format(" server-time" if server_time else ""),
-        )
-        self.getRegistrationMessage(1)
-        # TODO: Remove this one the trailing space issue is fixed in Charybdis
-        # and Mammon:
-        # self.assertMessageMatch(m, command='CAP',
-        #        params=['*', 'ACK', 'echo-message'] +
-        #        (['server-time'] if server_time else []),
-        #        fail_msg='Did not ACK advertised capabilities: {msg}')
-        self.sendLine(1, "USER f * * :foo")
-        self.sendLine(1, "NICK baz")
-        self.sendLine(1, "CAP END")
-        self.skipToWelcome(1)
-        self.getMessages(1)
+        if server_time:
+            self.connectClient(
+                "baz",
+                capabilities=["echo-message", "server-time"],
+                skip_if_cap_nak=True,
+            )
+        else:
+            self.connectClient(
+                "baz",
+                capabilities=["echo-message", "server-time"],
+                skip_if_cap_nak=True,
+            )
 
         self.sendLine(1, "JOIN #chan")
 

irctest/server_tests/ergo/services.py

@@ -0,0 +1,29 @@
+"""
+`Ergo <https://ergo.chat/>`-specific tests of NickServ.
+"""
+
+from irctest import cases
+from irctest.numerics import RPL_YOUREOPER
+
+
+class NickservTestCase(cases.BaseServerTestCase):
+    @cases.mark_specifications("Ergo")
+    def test_saregister(self):
+        self.connectClient("root", name="root")
+        self.sendLine("root", "OPER operuser operpassword")
+        self.assertIn(RPL_YOUREOPER, {msg.command for msg in self.getMessages("root")})
+
+        self.sendLine(
+            "root",
+            "PRIVMSG NickServ :SAREGISTER saregister_test saregistertestpassphrase",
+        )
+        self.getMessages("root")
+
+        # test that the account was registered
+        self.connectClient(
+            name="saregister_test",
+            nick="saregister_test",
+            capabilities=["sasl"],
+            account="saregister_test",
+            password="saregistertestpassphrase",
+        )

irctest/server_tests/extended_join.py

@@ -1,12 +1,12 @@
 """
-<http://ircv3.net/specs/extensions/extended-join-3.1.html>
+`IRCv3 extended-join <https://ircv3.net/specs/extensions/extended-join>`_
 """
 
 from irctest import cases
 
 
 @cases.mark_services
-class MetadataTestCase(cases.BaseServerTestCase, cases.OptionalityHelper):
+class MetadataTestCase(cases.BaseServerTestCase):
     def connectRegisteredClient(self, nick):
         self.addClient()
         self.sendLine(2, "CAP LS 302")
@@ -50,7 +50,7 @@ class MetadataTestCase(cases.BaseServerTestCase, cases.OptionalityHelper):
         )
 
     @cases.mark_capabilities("extended-join")
-    @cases.OptionalityHelper.skipUnlessHasMechanism("PLAIN")
+    @cases.skipUnlessHasMechanism("PLAIN")
     def testLoggedIn(self):
         self.connectClient("foo", capabilities=["extended-join"], skip_if_cap_nak=True)
         self.joinChannel(1, "#chan")

irctest/server_tests/help.py

@@ -0,0 +1,126 @@
+"""
+The HELP and HELPOP command (`Modern <https://modern.ircdocs.horse/#help-message>`__)
+"""
+
+import functools
+import re
+
+import pytest
+
+from irctest import cases, runner
+from irctest.numerics import (
+    ERR_HELPNOTFOUND,
+    ERR_UNKNOWNCOMMAND,
+    RPL_ENDOFHELP,
+    RPL_HELPSTART,
+    RPL_HELPTXT,
+)
+from irctest.patma import ANYSTR, StrRe
+
+
+def with_xfails(f):
+    @functools.wraps(f)
+    def newf(self, command, *args, **kwargs):
+        if command == "HELP" and self.controller.software_name == "Bahamut":
+            raise runner.ImplementationChoice(
+                "fail because Bahamut forwards /HELP to HelpServ (but not /HELPOP)"
+            )
+
+        if self.controller.software_name in ("irc2", "ircu2", "ngIRCd"):
+            raise runner.ImplementationChoice(
+                "numerics in reply to /HELP and /HELPOP (uses NOTICE instead)"
+            )
+
+        if self.controller.software_name == "UnrealIRCd":
+            raise runner.ImplementationChoice(
+                "fails because Unreal uses custom numerics "
+                "https://github.com/unrealircd/unrealircd/pull/184"
+            )
+
+        return f(self, command, *args, **kwargs)
+
+    return newf
+
+
+class HelpTestCase(cases.BaseServerTestCase):
+    def _assertValidHelp(self, messages, subject):
+        if subject != ANYSTR:
+            subject = StrRe("(?i)" + re.escape(subject))
+
+        self.assertMessageMatch(
+            messages[0],
+            command=RPL_HELPSTART,
+            params=["nick", subject, ANYSTR],
+            fail_msg=f"Expected {RPL_HELPSTART} (RPL_HELPSTART), got: {{msg}}",
+        )
+
+        self.assertMessageMatch(
+            messages[-1],
+            command=RPL_ENDOFHELP,
+            params=["nick", subject, ANYSTR],
+            fail_msg=f"Expected {RPL_ENDOFHELP} (RPL_ENDOFHELP), got: {{msg}}",
+        )
+
+        for i in range(1, len(messages) - 1):
+            self.assertMessageMatch(
+                messages[i],
+                command=RPL_HELPTXT,
+                params=["nick", subject, ANYSTR],
+                fail_msg=f"Expected {RPL_HELPTXT} (RPL_HELPTXT), got: {{msg}}",
+            )
+
+    @pytest.mark.parametrize("command", ["HELP", "HELPOP"])
+    @cases.mark_specifications("Modern")
+    @with_xfails
+    def testHelpNoArg(self, command):
+        self.connectClient("nick")
+        self.sendLine(1, f"{command}")
+
+        messages = self.getMessages(1)
+
+        if messages[0].command == ERR_UNKNOWNCOMMAND:
+            raise runner.OptionalCommandNotSupported(command)
+
+        self._assertValidHelp(messages, ANYSTR)
+
+    @pytest.mark.parametrize("command", ["HELP", "HELPOP"])
+    @cases.mark_specifications("Modern")
+    @with_xfails
+    def testHelpPrivmsg(self, command):
+        self.connectClient("nick")
+        self.sendLine(1, f"{command} PRIVMSG")
+        messages = self.getMessages(1)
+
+        if messages[0].command == ERR_UNKNOWNCOMMAND:
+            raise runner.OptionalCommandNotSupported(command)
+
+        self._assertValidHelp(messages, "PRIVMSG")
+
+    @pytest.mark.parametrize("command", ["HELP", "HELPOP"])
+    @cases.mark_specifications("Modern")
+    @with_xfails
+    def testHelpUnknownSubject(self, command):
+        self.connectClient("nick")
+        self.sendLine(1, f"{command} THISISNOTACOMMAND")
+        messages = self.getMessages(1)
+
+        if messages[0].command == ERR_UNKNOWNCOMMAND:
+            raise runner.OptionalCommandNotSupported(command)
+
+        if messages[0].command == ERR_HELPNOTFOUND:
+            # Inspircd, Hybrid et al
+            self.assertEqual(len(messages), 1)
+            self.assertMessageMatch(
+                messages[0],
+                command=ERR_HELPNOTFOUND,
+                params=[
+                    "nick",
+                    StrRe(
+                        "(?i)THISISNOTACOMMAND"
+                    ),  # case-insensitive, for Hybrid and Plexus4 (but not Chary et al)
+                    ANYSTR,
+                ],
+            )
+        else:
+            # Unrealircd
+            self._assertValidHelp(messages, ANYSTR)

irctest/server_tests/info.py

@@ -0,0 +1,118 @@
+"""
+The INFO command  (`RFC 1459
+<https://datatracker.ietf.org/doc/html/rfc1459#section-4.3.8>`__,
+`RFC 2812 <https://datatracker.ietf.org/doc/html/rfc2812#section-3.4.10>`__,
+`Modern <https://modern.ircdocs.horse/#info-message>`__)
+"""
+
+import pytest
+
+from irctest import cases
+from irctest.numerics import ERR_NOSUCHSERVER, RPL_ENDOFINFO, RPL_INFO, RPL_YOUREOPER
+from irctest.patma import ANYSTR
+
+
+class InfoTestCase(cases.BaseServerTestCase):
+    @cases.mark_specifications("RFC1459", "RFC2812", "Modern")
+    def testInfo(self):
+        """
+        <https://datatracker.ietf.org/doc/html/rfc1459#section-4.3.8>
+        <https://datatracker.ietf.org/doc/html/rfc2812#section-3.4.10>
+
+        "Upon receiving an INFO command, the given server will respond with zero or
+        more RPL_INFO replies, followed by one RPL_ENDOFINFO numeric"
+        -- <https://modern.ircdocs.horse/#info-message>
+        """
+        self.connectClient("nick")
+
+        # Remote /INFO is oper-only on Unreal and ircu2
+        self.sendLine(1, "OPER operuser operpassword")
+        self.assertIn(
+            RPL_YOUREOPER,
+            [m.command for m in self.getMessages(1)],
+            fail_msg="OPER failed",
+        )
+
+        self.sendLine(1, "INFO")
+
+        messages = self.getMessages(1)
+        last_message = messages.pop()
+
+        self.assertMessageMatch(
+            last_message, command=RPL_ENDOFINFO, params=["nick", ANYSTR]
+        )
+
+        for message in messages:
+            self.assertMessageMatch(message, command=RPL_INFO, params=["nick", ANYSTR])
+
+    @pytest.mark.parametrize(
+        "target",
+        ["My.Little.Server", "*Little*", "nick"],
+        ids=["target-server", "target-wildcard", "target-nick"],
+    )
+    @cases.mark_specifications("RFC1459", "RFC2812", deprecated=True)
+    def testInfoTarget(self, target):
+        """
+        <https://datatracker.ietf.org/doc/html/rfc1459#section-4.3.8>
+        <https://datatracker.ietf.org/doc/html/rfc2812#section-3.4.10>
+
+        "Upon receiving an INFO command, the given server will respond with zero or
+        more RPL_INFO replies, followed by one RPL_ENDOFINFO numeric"
+        -- <https://modern.ircdocs.horse/#info-message>
+        """
+        self.connectClient("nick")
+
+        # Remote /INFO is oper-only on Unreal and ircu2
+        self.sendLine(1, "OPER operuser operpassword")
+        self.assertIn(
+            RPL_YOUREOPER,
+            [m.command for m in self.getMessages(1)],
+            fail_msg="OPER failed",
+        )
+
+        if target:
+            self.sendLine(1, "INFO My.Little.Server")
+        else:
+            self.sendLine(1, "INFO")
+
+        messages = self.getMessages(1)
+        last_message = messages.pop()
+
+        self.assertMessageMatch(
+            last_message, command=RPL_ENDOFINFO, params=["nick", ANYSTR]
+        )
+
+        for message in messages:
+            self.assertMessageMatch(message, command=RPL_INFO, params=["nick", ANYSTR])
+
+    @pytest.mark.parametrize("target", ["invalid.server.example", "invalidserver"])
+    @cases.mark_specifications("RFC1459", "RFC2812", deprecated=True)
+    @cases.xfailIfSoftware(
+        ["Ergo"], "does not apply to Ergo, which ignores the optional <target> argument"
+    )
+    def testInfoNosuchserver(self, target):
+        """
+        <https://datatracker.ietf.org/doc/html/rfc1459#section-4.3.8>
+        <https://datatracker.ietf.org/doc/html/rfc2812#section-3.4.10>
+
+        "Upon receiving an INFO command, the given server will respond with zero or
+        more RPL_INFO replies, followed by one RPL_ENDOFINFO numeric"
+        -- <https://modern.ircdocs.horse/#info-message>
+        """
+        self.connectClient("nick")
+
+        # Remote /INFO is oper-only on Unreal and ircu2
+        self.sendLine(1, "OPER operuser operpassword")
+        self.assertIn(
+            RPL_YOUREOPER,
+            [m.command for m in self.getMessages(1)],
+            fail_msg="OPER failed",
+        )
+
+        self.sendLine(1, f"INFO {target}")
+
+        self.assertMessageMatch(
+            self.getMessage(1),
+            command=ERR_NOSUCHSERVER,
+            params=["nick", target, ANYSTR],
+        )

irctest/server_tests/invite.py

@@ -1,9 +1,18 @@
+"""
+The INVITE command  (`RFC 1459
+<https://datatracker.ietf.org/doc/html/rfc1459#section-4.2.7>`__,
+`RFC 2812 <https://datatracker.ietf.org/doc/html/rfc2812#section-3.2.7>`__,
+`Modern <https://modern.ircdocs.horse/#invite-message>`__)
+"""
+
 import pytest
 
-from irctest import cases
+from irctest import cases, runner
 from irctest.numerics import (
+    ERR_BANNEDFROMCHAN,
     ERR_CHANOPRIVSNEEDED,
     ERR_INVITEONLYCHAN,
+    ERR_NEEDMOREPARAMS,
     ERR_NOSUCHNICK,
     ERR_NOTONCHANNEL,
     ERR_USERONCHANNEL,
@@ -109,7 +118,7 @@ class InviteTestCase(cases.BaseServerTestCase):
             "got this instead: {msg}",
         )
 
-    def _testInvite(self, opped, invite_only, modern):
+    def _testInvite(self, opped, invite_only):
         """
         "Only the user inviting and the user being invited will receive
         notification of the invitation."
@@ -162,23 +171,14 @@ class InviteTestCase(cases.BaseServerTestCase):
             )
 
         self.sendLine(1, "INVITE bar #chan")
-        if modern:
-            self.assertMessageMatch(
-                self.getMessage(1),
-                command=RPL_INVITING,
-                params=["foo", "bar", "#chan"],
-                fail_msg=f"After “foo” invited “bar” to a channel, “foo” should have "
-                f"received “{RPL_INVITING} foo #chan bar” but got this instead: "
-                f"{{msg}}",
-            )
-        else:
-            self.assertMessageMatch(
-                self.getMessage(1),
-                command=RPL_INVITING,
-                params=["#chan", "bar"],
-                fail_msg=f"After “foo” invited “bar” to a channel, “foo” should have "
-                f"received “{RPL_INVITING} #chan bar” but got this instead: {{msg}}",
-            )
+        self.assertMessageMatch(
+            self.getMessage(1),
+            command=RPL_INVITING,
+            params=["foo", "bar", "#chan"],
+            fail_msg=f"After “foo” invited “bar” to a channel, “foo” should have "
+            f"received “{RPL_INVITING} foo #chan bar” but got this instead: "
+            f"{{msg}}",
+        )
 
         messages = self.getMessages(2)
         self.assertNotEqual(
@@ -196,24 +196,17 @@ class InviteTestCase(cases.BaseServerTestCase):
         )
 
     @pytest.mark.parametrize("invite_only", [True, False])
-    @cases.mark_specifications("Modern")
-    def testInviteModern(self, invite_only):
-        self._testInvite(opped=True, invite_only=invite_only, modern=True)
+    @cases.mark_specifications("RFC1459", "RFC2812", "Modern")
+    def testInvite(self, invite_only):
+        self._testInvite(opped=True, invite_only=invite_only)
 
-    @pytest.mark.parametrize("invite_only", [True, False])
-    @cases.mark_specifications("RFC1459", "RFC2812", deprecated=True)
-    def testInviteRfc(self, invite_only):
-        self._testInvite(opped=True, invite_only=invite_only, modern=False)
-
-    @cases.mark_specifications("Modern", strict=True)
-    def testInviteUnoppedModern(self):
+    @cases.mark_specifications("RFC1459", "RFC2812", "Modern", strict=True)
+    @cases.xfailIfSoftware(
+        ["Hybrid", "Plexus4"], "the only strict test that Hybrid fails"
+    )
+    def testInviteUnopped(self):
         """Tests invites from unopped users on not-invite-only chans."""
-        self._testInvite(opped=False, invite_only=False, modern=True)
-
-    @cases.mark_specifications("RFC1459", "RFC2812", deprecated=True, strict=True)
-    def testInviteUnoppedRfc(self, opped, invite_only):
-        """Tests invites from unopped users on not-invite-only chans."""
-        self._testInvite(opped=False, invite_only=False, modern=False)
+        self._testInvite(opped=False, invite_only=False)
 
     @cases.mark_specifications("RFC2812", "Modern")
     def testInviteNoNotificationForOtherMembers(self):
@@ -247,7 +240,13 @@ class InviteTestCase(cases.BaseServerTestCase):
             "were notified: {got}",
         )
 
-    def _testInviteInviteOnly(self, modern):
+    @cases.mark_specifications("RFC1459", "RFC2812", "Modern")
+    @cases.xfailIfSoftware(
+        ["Plexus4"],
+        "Plexus4 allows non-op to invite if (and only if) the channel is not "
+        "invite-only",
+    )
+    def testInviteInviteOnly(self):
         """
         "To invite a user to a channel which is invite only (MODE
         +i), the client sending the invite must be recognised as being a
@@ -287,35 +286,17 @@ class InviteTestCase(cases.BaseServerTestCase):
         )
 
         self.sendLine(1, "INVITE bar #chan")
-        if modern:
-            self.assertMessageMatch(
-                self.getMessage(1),
-                command=ERR_CHANOPRIVSNEEDED,
-                params=["foo", "#chan", ANYSTR],
-                fail_msg=f"After “foo” invited “bar” to a channel to an invite-only "
-                f"channel without being opped, “foo” should have received "
-                f"“{ERR_CHANOPRIVSNEEDED} foo #chan :*” but got this instead: {{msg}}",
-            )
-        else:
-            self.assertMessageMatch(
-                self.getMessage(1),
-                command=ERR_CHANOPRIVSNEEDED,
-                params=["#chan", ANYSTR],
-                fail_msg=f"After “foo” invited “bar” to a channel to an invite-only "
-                f"channel without being opped, “foo” should have received "
-                f"“{ERR_CHANOPRIVSNEEDED} #chan :*” but got this instead: {{msg}}",
-            )
-
-    @cases.mark_specifications("Modern")
-    def testInviteInviteOnlyModern(self):
-        self._testInviteInviteOnly(modern=True)
-
-    @cases.mark_specifications("RFC1459", "RFC2812", deprecated=True)
-    def testInviteInviteOnlyRfc(self):
-        self._testInviteInviteOnly(modern=False)
+        self.assertMessageMatch(
+            self.getMessage(1),
+            command=ERR_CHANOPRIVSNEEDED,
+            params=["foo", "#chan", ANYSTR],
+            fail_msg=f"After “foo” invited “bar” to a channel to an invite-only "
+            f"channel without being opped, “foo” should have received "
+            f"“{ERR_CHANOPRIVSNEEDED} foo #chan :*” but got this instead: {{msg}}",
+        )
 
     @cases.mark_specifications("RFC2812", "Modern")
-    def _testInviteOnlyFromUsersInChannel(self, modern):
+    def testInviteOnlyFromUsersInChannel(self):
         """
         "if the channel exists, only members of the channel are allowed
         to invite other users"
@@ -348,26 +329,15 @@ class InviteTestCase(cases.BaseServerTestCase):
         self.getMessages(3)
 
         self.sendLine(1, "INVITE bar #chan")
-        if modern:
-            self.assertMessageMatch(
-                self.getMessage(1),
-                command=ERR_NOTONCHANNEL,
-                params=["foo", "#chan", ANYSTR],
-                fail_msg=f"After “foo” invited “bar” to a channel it is not on "
-                f"#chan, “foo” should have received "
-                f"“ERR_NOTONCHANNEL ({ERR_NOTONCHANNEL}) foo #chan :*” but "
-                f"got this instead: {{msg}}",
-            )
-        else:
-            self.assertMessageMatch(
-                self.getMessage(1),
-                command=ERR_NOTONCHANNEL,
-                params=["#chan", ANYSTR],
-                fail_msg=f"After “foo” invited “bar” to a channel it is not on "
-                f"#chan, “foo” should have received "
-                f"“ERR_NOTONCHANNEL ({ERR_NOTONCHANNEL}) #chan :*” but "
-                f"got this instead: {{msg}}",
-            )
+        self.assertMessageMatch(
+            self.getMessage(1),
+            command=ERR_NOTONCHANNEL,
+            params=["foo", "#chan", ANYSTR],
+            fail_msg=f"After “foo” invited “bar” to a channel it is not on "
+            f"#chan, “foo” should have received "
+            f"“ERR_NOTONCHANNEL ({ERR_NOTONCHANNEL}) foo #chan :*” but "
+            f"got this instead: {{msg}}",
+        )
 
         messages = self.getMessages(2)
         self.assertEqual(
@@ -377,14 +347,6 @@ class InviteTestCase(cases.BaseServerTestCase):
             "not in #chan, “bar” received something.",
         )
 
-    @cases.mark_specifications("Modern")
-    def testInviteOnlyFromUsersInChannelModern(self):
-        self._testInviteOnlyFromUsersInChannel(modern=True)
-
-    @cases.mark_specifications("RFC2812", deprecated=True)
-    def testInviteOnlyFromUsersInChannelRfc(self):
-        self._testInviteOnlyFromUsersInChannel(modern=False)
-
     @cases.mark_specifications("Modern")
     def testInviteAlreadyInChannel(self):
         """
@@ -410,3 +372,124 @@ class InviteTestCase(cases.BaseServerTestCase):
             command=ERR_USERONCHANNEL,
             params=["foo", "bar", "#chan", ANYSTR],
         )
+
+    @cases.mark_specifications("RFC2812", "Modern")
+    @cases.xfailIfSoftware(
+        ["ircu2"],
+        "Uses 346/347 instead of 336/337 to reply to INVITE "
+        "https://github.com/UndernetIRC/ircu2/pull/20",
+    )
+    def testInviteList(self):
+        self.connectClient("foo")
+        self.connectClient("bar")
+        self.getMessages(1)
+        self.getMessages(2)
+
+        self.sendLine(1, "JOIN #chan")
+        self.getMessages(1)
+
+        self.sendLine(1, "INVITE bar #chan")
+        self.getMessages(1)
+        self.getMessages(2)
+
+        self.sendLine(2, "INVITE")
+        m = self.getMessage(2)
+        if m.command == ERR_NEEDMOREPARAMS:
+            raise runner.OptionalExtensionNotSupported("INVITE with no parameter")
+        if m.command != "337":
+            # Hybrid always sends an empty list; so skip this.
+            self.assertMessageMatch(
+                m,
+                command="336",
+                params=["bar", "#chan"],
+            )
+            m = self.getMessage(2)
+        self.assertMessageMatch(
+            m,
+            command="337",
+            params=["bar", ANYSTR],
+        )
+
+    @cases.mark_isupport("INVEX")
+    @cases.mark_specifications("Modern")
+    def testInvexList(self):
+        self.connectClient("foo")
+        self.getMessages(1)
+
+        if "INVEX" in self.server_support:
+            invex = self.server_support.get("INVEX") or "I"
+        else:
+            raise runner.IsupportTokenNotSupported("INVEX")
+
+        self.sendLine(1, "JOIN #chan")
+        self.getMessages(1)
+
+        self.sendLine(1, f"MODE #chan +{invex} bar!*@*")
+        self.getMessages(1)
+
+        self.sendLine(1, f"MODE #chan +{invex}")
+        m = self.getMessage(1)
+        if len(m.params) == 3:
+            # Old format
+            self.assertMessageMatch(
+                m,
+                command="346",
+                params=["foo", "#chan", "bar!*@*"],
+            )
+        else:
+            self.assertMessageMatch(
+                m,
+                command="346",
+                params=[
+                    "foo",
+                    "#chan",
+                    "bar!*@*",
+                    StrRe("foo(!.*@.*)?"),
+                    StrRe("[0-9]+"),
+                ],
+            )
+        self.assertMessageMatch(
+            self.getMessage(1),
+            command="347",
+            params=["foo", "#chan", ANYSTR],
+        )
+
+    @cases.mark_specifications("Ergo")
+    def testInviteExemptsFromBan(self):
+        # regression test for ergochat/ergo#1876;
+        # INVITE should override a +b ban
+        self.connectClient("alice", name="alice")
+        self.joinChannel("alice", "#alice")
+        self.sendLine("alice", "MODE #alice +b bob!*@*")
+        result = {msg.command for msg in self.getMessages("alice")}
+        self.assertIn("MODE", result)
+
+        self.connectClient("bob", name="bob")
+        self.sendLine("bob", "JOIN #alice")
+        result = {msg.command for msg in self.getMessages("bob")}
+        self.assertIn(ERR_BANNEDFROMCHAN, result)
+        self.assertNotIn("JOIN", result)
+
+        self.sendLine("alice", "INVITE bob #alice")
+        result = {msg.command for msg in self.getMessages("alice")}
+        self.assertIn(RPL_INVITING, result)
+        self.assertNotIn(ERR_USERONCHANNEL, result)
+
+        result = {msg.command for msg in self.getMessages("bob")}
+        self.assertIn("INVITE", result)
+
+        self.sendLine("bob", "JOIN #alice")
+        result = {msg.command for msg in self.getMessages("bob")}
+        self.assertNotIn(ERR_BANNEDFROMCHAN, result)
+        self.assertIn("JOIN", result)
+
+        self.sendLine("alice", "KICK #alice bob")
+        self.getMessages("alice")
+        result = {msg.command for msg in self.getMessages("bob")}
+        self.assertIn("KICK", result)
+
+        # INVITE gets "used up" after one JOIN
+        self.sendLine("bob", "JOIN #alice")
+        result = {msg.command for msg in self.getMessages("bob")}
+        self.assertIn(ERR_BANNEDFROMCHAN, result)
+        self.assertNotIn("JOIN", result)

irctest/server_tests/isupport.py

@@ -1,9 +1,72 @@
+"""
+RPL_ISUPPORT: `format <https://modern.ircdocs.horse/#rplisupport-005>`__
+and various `tokens <https://modern.ircdocs.horse/#rplisupport-parameters>`__
+"""
+
 import re
 
 from irctest import cases, runner
 
 
 class IsupportTestCase(cases.BaseServerTestCase):
+    @cases.mark_specifications("Modern")
+    @cases.mark_isupport("PREFIX")
+    def testPrefix(self):
+        """https://modern.ircdocs.horse/#prefix-parameter"""
+        self.connectClient("foo")
+
+        if "PREFIX" not in self.server_support:
+            raise runner.IsupportTokenNotSupported("PREFIX")
+
+        if self.server_support["PREFIX"] == "":
+            # "The value is OPTIONAL and when it is not specified indicates that no
+            # prefixes are supported."
+            return
+
+        m = re.match(
+            r"\((?P<modes>[a-zA-Z]+)\)(?P<prefixes>\S+)", self.server_support["PREFIX"]
+        )
+        self.assertTrue(
+            m,
+            f"PREFIX={self.server_support['PREFIX']} does not have the expected "
+            f"format.",
+        )
+
+        modes = m.group("modes")
+        prefixes = m.group("prefixes")
+
+        # "There is a one-to-one mapping between prefixes and channel modes."
+        self.assertEqual(
+            len(modes), len(prefixes), "Mismatched length of prefix and channel modes."
+        )
+
+        # "The prefixes in this parameter are in descending order, from the prefix
+        # that gives the most privileges to the prefix that gives the least."
+        self.assertLess(modes.index("o"), modes.index("v"), "'o' is not before 'v'")
+        if "h" in modes:
+            self.assertLess(modes.index("o"), modes.index("h"), "'o' is not before 'h'")
+            self.assertLess(modes.index("h"), modes.index("v"), "'h' is not before 'v'")
+        if "q" in modes:
+            self.assertLess(modes.index("q"), modes.index("o"), "'q' is not before 'o'")
+
+        # Not technically in the spec, but it would be very confusing not to follow
+        # these conventions.
+        mode_to_prefix = dict(zip(modes, prefixes))
+        self.assertEqual(mode_to_prefix["o"], "@", "Prefix char for mode +o is not @")
+        self.assertEqual(mode_to_prefix["v"], "+", "Prefix char for mode +v is not +")
+        if "h" in modes:
+            self.assertEqual(
+                mode_to_prefix["h"], "%", "Prefix char for mode +h is not %"
+            )
+        if "q" in modes:
+            self.assertEqual(
+                mode_to_prefix["q"], "~", "Prefix char for mode +q is not ~"
+            )
+        if "a" in modes:
+            self.assertEqual(
+                mode_to_prefix["a"], "&", "Prefix char for mode +a is not &"
+            )
+
     @cases.mark_specifications("Modern", "ircdocs")
     @cases.mark_isupport("TARGMAX")
     def testTargmax(self):
@@ -17,7 +80,7 @@ class IsupportTestCase(cases.BaseServerTestCase):
         self.connectClient("foo")
 
         if "TARGMAX" not in self.server_support:
-            raise runner.NotImplementedByController("TARGMAX")
+            raise runner.IsupportTokenNotSupported("TARGMAX")
 
         parts = self.server_support["TARGMAX"].split(",")
         for part in parts:

irctest/server_tests/join.py

@@ -1,5 +1,30 @@
-from irctest import cases
+"""
+The JOIN command  (`RFC 1459
+<https://datatracker.ietf.org/doc/html/rfc1459#section-4.2.1>`__,
+`RFC 2812 <https://datatracker.ietf.org/doc/html/rfc2812#section-3.2.1>`__,
+`Modern <https://modern.ircdocs.horse/#join-message>`__)
+"""
+
+from irctest import cases, runner
 from irctest.irc_utils import ambiguities
+from irctest.numerics import (
+    ERR_BADCHANMASK,
+    ERR_FORBIDDENCHANNEL,
+    ERR_NOSUCHCHANNEL,
+    RPL_ENDOFNAMES,
+    RPL_NAMREPLY,
+)
+from irctest.patma import ANYSTR, StrRe
+
+ERR_BADCHANNAME = "479"  # Hybrid only, and conflicts with others
+
+
+JOIN_ERROR_NUMERICS = {
+    ERR_BADCHANMASK,
+    ERR_NOSUCHCHANNEL,
+    ERR_FORBIDDENCHANNEL,
+    ERR_BADCHANNAME,
+}
 
 
 class JoinTestCase(cases.BaseServerTestCase):
@@ -19,13 +44,22 @@ class JoinTestCase(cases.BaseServerTestCase):
         self.connectClient("foo")
         self.sendLine(1, "JOIN #chan")
         received_commands = {m.command for m in self.getMessages(1)}
-        expected_commands = {"353", "366"}  # RPL_NAMREPLY  # RPL_ENDOFNAMES
-        self.assertTrue(
-            expected_commands.issubset(received_commands),
+        expected_commands = {RPL_NAMREPLY, RPL_ENDOFNAMES, "JOIN"}
+        acceptable_commands = expected_commands | {"MODE"}
+        self.assertLessEqual(  # set inclusion
+            expected_commands,
+            received_commands,
             "Server sent {} commands, but at least {} were expected.".format(
                 received_commands, expected_commands
             ),
         )
+        self.assertLessEqual(  # ditto
+            received_commands,
+            acceptable_commands,
+            "Server sent {} commands, but only {} were expected.".format(
+                received_commands, acceptable_commands
+            ),
+        )
 
     @cases.mark_specifications("RFC2812")
     def testJoinNamreply(self):
@@ -110,3 +144,95 @@ class JoinTestCase(cases.BaseServerTestCase):
                     '"foo" with an optional "+" or "@" prefix, but got: '
                     "{msg}",
                 )
+
+    def testJoinPartiallyInvalid(self):
+        """TODO: specify this in Modern"""
+        self.connectClient("foo")
+        if int(self.targmax.get("JOIN") or "4") < 2:
+            raise runner.OptionalExtensionNotSupported("multi-channel JOIN")
+
+        self.sendLine(1, "JOIN #valid,inv@lid")
+        messages = self.getMessages(1)
+        received_commands = {m.command for m in messages}
+        expected_commands = {RPL_NAMREPLY, RPL_ENDOFNAMES, "JOIN"}
+        acceptable_commands = expected_commands | JOIN_ERROR_NUMERICS | {"MODE"}
+        self.assertLessEqual(
+            expected_commands,
+            received_commands,
+            "Server sent {} commands, but at least {} were expected.".format(
+                received_commands, expected_commands
+            ),
+        )
+        self.assertLessEqual(
+            received_commands,
+            acceptable_commands,
+            "Server sent {} commands, but only {} were expected.".format(
+                received_commands, acceptable_commands
+            ),
+        )
+
+        nb_errors = 0
+        for m in messages:
+            if m.command in JOIN_ERROR_NUMERICS:
+                nb_errors += 1
+                self.assertMessageMatch(m, params=["foo", "inv@lid", ANYSTR])
+
+        self.assertEqual(
+            nb_errors,
+            1,
+            fail_msg="Expected 1 error when joining channels '#valid' and 'inv@lid', "
+            "got {got}",
+        )
+
+    @cases.mark_capabilities("batch", "labeled-response")
+    def testJoinPartiallyInvalidLabeledResponse(self):
+        """TODO: specify this in Modern"""
+        self.connectClient(
+            "foo", capabilities=["batch", "labeled-response"], skip_if_cap_nak=True
+        )
+        if int(self.targmax.get("JOIN") or "4") < 2:
+            raise runner.OptionalExtensionNotSupported("multi-channel JOIN")
+
+        self.sendLine(1, "@label=label1 JOIN #valid,inv@lid")
+        messages = self.getMessages(1)
+
+        first_msg = messages.pop(0)
+        last_msg = messages.pop(-1)
+        self.assertMessageMatch(
+            first_msg, command="BATCH", params=[StrRe(r"\+.*"), "labeled-response"]
+        )
+        batch_id = first_msg.params[0][1:]
+        self.assertMessageMatch(last_msg, command="BATCH", params=["-" + batch_id])
+
+        received_commands = {m.command for m in messages}
+        expected_commands = {RPL_NAMREPLY, RPL_ENDOFNAMES, "JOIN"}
+        acceptable_commands = expected_commands | JOIN_ERROR_NUMERICS | {"MODE"}
+        self.assertLessEqual(
+            expected_commands,
+            received_commands,
+            "Server sent {} commands, but at least {} were expected.".format(
+                received_commands, expected_commands
+            ),
+        )
+        self.assertLessEqual(
+            received_commands,
+            acceptable_commands,
+            "Server sent {} commands, but only {} were expected.".format(
+                received_commands, acceptable_commands
+            ),
+        )
+
+        nb_errors = 0
+        for m in messages:
+            self.assertIn("batch", m.tags)
+            self.assertEqual(m.tags["batch"], batch_id)
+            if m.command in JOIN_ERROR_NUMERICS:
+                nb_errors += 1
+                self.assertMessageMatch(m, params=["foo", "inv@lid", ANYSTR])
+
+        self.assertEqual(
+            nb_errors,
+            1,
+            fail_msg="Expected 1 error when joining channels '#valid' and 'inv@lid', "
+            "got {got}",
+        )

irctest/server_tests/kick.py

@@ -1,3 +1,10 @@
+"""
+The KICK command  (`RFC 1459
+<https://datatracker.ietf.org/doc/html/rfc1459#section-4.2.1>`__,
+`RFC 2812 <https://datatracker.ietf.org/doc/html/rfc2812#section-3.2.>`__,
+`Modern <https://modern.ircdocs.horse/#kick-message>`__)
+"""
+
 import pytest
 
 from irctest import cases, client_mock, runner
@@ -89,6 +96,10 @@ class KickTestCase(cases.BaseServerTestCase):
             self.assertMessageMatch(m3, command="KICK", params=["#chan", "bar", ANYSTR])
 
     @cases.mark_specifications("RFC2812")
+    @cases.xfailIfSoftware(
+        ["Charybdis", "ircu2", "irc2", "Solanum"],
+        "uses the nick of the kickee rather than the kicker.",
+    )
     def testKickDefaultComment(self):
         """
         "If a "comment" is
@@ -219,13 +230,8 @@ class KickTestCase(cases.BaseServerTestCase):
         self.connectClient("qux")
         self.joinChannel(4, "#chan")
 
-        targmax = dict(
-            item.split(":", 1)
-            for item in self.server_support.get("TARGMAX", "").split(",")
-            if item
-        )
-        if targmax.get("KICK", "1") == "1":
-            raise runner.NotImplementedByController("Multi-target KICK")
+        if self.targmax.get("KICK", "1") == "1":
+            raise runner.OptionalExtensionNotSupported("Multi-target KICK")
 
         # TODO: check foo is an operator
 

irctest/server_tests/labeled_responses.py

@@ -1,8 +1,8 @@
 """
+`IRCv3 labeled-response <https://ircv3.net/specs/extensions/labeled-response>`_
+
 This specification is a little hard to test because all labels are optional;
 so there may be many false positives.
-
-<https://ircv3.net/specs/extensions/labeled-response.html>
 """
 
 import re
@@ -10,10 +10,11 @@ import re
 import pytest
 
 from irctest import cases
-from irctest.patma import ANYDICT, AnyOptStr, NotStrRe, RemainingKeys, StrRe
+from irctest.numerics import ERR_UNKNOWNCOMMAND
+from irctest.patma import ANYDICT, ANYOPTSTR, NotStrRe, RemainingKeys, StrRe
 
 
-class LabeledResponsesTestCase(cases.BaseServerTestCase, cases.OptionalityHelper):
+class LabeledResponsesTestCase(cases.BaseServerTestCase):
     @cases.mark_capabilities("echo-message", "batch", "labeled-response")
     def testLabeledPrivmsgResponsesToMultipleClients(self):
         self.connectClient(
@@ -298,7 +299,7 @@ class LabeledResponsesTestCase(cases.BaseServerTestCase, cases.OptionalityHelper
             tags={
                 "+draft/reply": msgid,
                 "+draft/react": "l😃l",
-                RemainingKeys(NotStrRe("label")): AnyOptStr(),
+                RemainingKeys(NotStrRe("label")): ANYOPTSTR,
             },
         )
         self.assertNotIn(
@@ -366,7 +367,7 @@ class LabeledResponsesTestCase(cases.BaseServerTestCase, cases.OptionalityHelper
             tags={
                 "+draft/reply": msgid,
                 "+draft/react": "l😃l",
-                RemainingKeys(NotStrRe("label")): AnyOptStr(),
+                RemainingKeys(NotStrRe("label")): ANYOPTSTR,
             },
             fail_msg="No TAGMSG received by the target after sending one out",
         )
@@ -502,3 +503,19 @@ class LabeledResponsesTestCase(cases.BaseServerTestCase, cases.OptionalityHelper
         ack = ms[0]
 
         self.assertMessageMatch(ack, command="ACK", tags={"label": "98765"})
+
+    @cases.mark_capabilities("labeled-response")
+    def testUnknownCommand(self):
+        self.connectClient(
+            "bar", capabilities=["batch", "labeled-response"], skip_if_cap_nak=True
+        )
+
+        # this command doesn't exist, but the error response should still
+        # be labeled:
+        self.sendLine(1, "@label=deadbeef NONEXISTENT_COMMAND")
+        ms = self.getMessages(1)
+        self.assertEqual(len(ms), 1)
+        unknowncommand = ms[0]
+        self.assertMessageMatch(
+            unknowncommand, command=ERR_UNKNOWNCOMMAND, tags={"label": "deadbeef"}
+        )

irctest/server_tests/links.py

@@ -0,0 +1,136 @@
+from irctest import cases, runner
+from irctest.numerics import ERR_UNKNOWNCOMMAND, RPL_ENDOFLINKS, RPL_LINKS
+from irctest.patma import ANYSTR, StrRe
+
+
+class LinksTestCase(cases.BaseServerTestCase):
+    @cases.mark_specifications("RFC1459", "RFC2812", "Modern")
+    def testLinksSingleServer(self):
+        """
+        Only testing the parameter-less case.
+
+        https://datatracker.ietf.org/doc/html/rfc1459#section-4.3.3
+        https://datatracker.ietf.org/doc/html/rfc2812#section-3.4.5
+        https://github.com/ircdocs/modern-irc/pull/175
+
+        "
+        364     RPL_LINKS
+                        "<mask> <server> :<hopcount> <server info>"
+        365     RPL_ENDOFLINKS
+                        "<mask> :End of /LINKS list"
+
+                - In replying to the LINKS message, a server must send
+                  replies back using the RPL_LINKS numeric and mark the
+                  end of the list using an RPL_ENDOFLINKS reply.
+        "
+        -- https://datatracker.ietf.org/doc/html/rfc1459#page-51
+        -- https://datatracker.ietf.org/doc/html/rfc2812#page-48
+
+        RPL_LINKS: "<client> * <server> :<hopcount> <server info>"
+        RPL_ENDOFLINKS: "<client> * :End of /LINKS list"
+        -- https://github.com/ircdocs/modern-irc/pull/175/files
+        """
+        self.connectClient("nick")
+        self.sendLine(1, "LINKS")
+        messages = self.getMessages(1)
+        if messages[0].command == ERR_UNKNOWNCOMMAND:
+            raise runner.OptionalCommandNotSupported("LINKS")
+
+        # Ignore '/LINKS has been disabled' from ircu2
+        messages = [m for m in messages if m.command != "NOTICE"]
+
+        self.assertMessageMatch(
+            messages.pop(-1),
+            command=RPL_ENDOFLINKS,
+            params=["nick", "*", ANYSTR],
+        )
+
+        if not messages:
+            # This server probably redacts links
+            return
+
+        self.assertMessageMatch(
+            messages[0],
+            command=RPL_LINKS,
+            params=[
+                "nick",
+                "My.Little.Server",
+                "My.Little.Server",
+                StrRe("0 (0042 )?test server"),
+            ],
+        )
+
+
+@cases.mark_services
+class ServicesLinksTestCase(cases.BaseServerTestCase):
+    # On every IRCd but Ergo, services are linked.
+    # Ergo does not implement LINKS at all, so this test is skipped.
+    @cases.mark_specifications("RFC1459", "RFC2812", "Modern")
+    def testLinksWithServices(self):
+        """
+        Only testing the parameter-less case.
+
+        https://datatracker.ietf.org/doc/html/rfc1459#section-4.3.3
+        https://datatracker.ietf.org/doc/html/rfc2812#section-3.4.5
+
+        "
+        364     RPL_LINKS
+                        "<mask> <server> :<hopcount> <server info>"
+        365     RPL_ENDOFLINKS
+                        "<mask> :End of /LINKS list"
+
+                - In replying to the LINKS message, a server must send
+                  replies back using the RPL_LINKS numeric and mark the
+                  end of the list using an RPL_ENDOFLINKS reply.
+        "
+        -- https://datatracker.ietf.org/doc/html/rfc1459#page-51
+        -- https://datatracker.ietf.org/doc/html/rfc2812#page-48
+
+        RPL_LINKS: "<client> * <server> :<hopcount> <server info>"
+        RPL_ENDOFLINKS: "<client> * :End of /LINKS list"
+        -- https://github.com/ircdocs/modern-irc/pull/175/files
+        """
+        self.connectClient("nick")
+        self.sendLine(1, "LINKS")
+        messages = self.getMessages(1)
+
+        if messages[0].command == ERR_UNKNOWNCOMMAND:
+            raise runner.OptionalCommandNotSupported("LINKS")
+
+        # Ignore '/LINKS has been disabled' from ircu2
+        messages = [m for m in messages if m.command != "NOTICE"]
+
+        self.assertMessageMatch(
+            messages.pop(-1),
+            command=RPL_ENDOFLINKS,
+            params=["nick", "*", ANYSTR],
+        )
+
+        if not messages:
+            # This server redacts links
+            return
+
+        messages.sort(key=lambda m: m.params[-1])
+
+        self.assertMessageMatch(
+            messages.pop(0),
+            command=RPL_LINKS,
+            params=[
+                "nick",
+                "My.Little.Server",
+                "My.Little.Server",
+                StrRe("0 (0042 )?test server"),
+            ],
+        )
+        self.assertMessageMatch(
+            messages.pop(0),
+            command=RPL_LINKS,
+            params=[
+                "nick",
+                "services.example.org",
+                "My.Little.Server",
+                StrRe("1 .+"),  # SID instead of description for Anope...
+            ],
+        )
+
+        self.assertEqual(messages, [])

irctest/server_tests/list.py

@@ -1,40 +1,71 @@
-from irctest import cases
+"""
+The LIST command  (`RFC 1459
+<https://datatracker.ietf.org/doc/html/rfc1459#section-4.2.6>`__,
+`RFC 2812 <https://datatracker.ietf.org/doc/html/rfc2812#section-3.2.6>`__,
+`Modern <https://modern.ircdocs.horse/#list-message>`__)
+"""
+
+import time
+
+from irctest import cases, runner
+from irctest.numerics import RPL_LIST, RPL_LISTEND, RPL_LISTSTART
 
 
-class ListTestCase(cases.BaseServerTestCase):
+class _BasedListTestCase(cases.BaseServerTestCase):
+    def _parseChanList(self, client):
+        channels = set()
+        while True:
+            m = self.getMessage(client)
+            if m.command == RPL_LISTEND:
+                break
+            if m.command == RPL_LIST:
+                if m.params[1].startswith("&"):
+                    # skip local pseudo-channels listed by ngircd and ircu
+                    continue
+                channels.add(m.params[1])
+
+        return channels
+
+
+class ListTestCase(_BasedListTestCase):
     @cases.mark_specifications("RFC1459", "RFC2812")
+    @cases.xfailIfSoftware(["irc2"], "irc2 deprecated LIST")
     def testListEmpty(self):
         """<https://tools.ietf.org/html/rfc1459#section-4.2.6>
         <https://tools.ietf.org/html/rfc2812#section-3.2.6>
+        <https://modern.ircdocs.horse/#list-message>
         """
         self.connectClient("foo")
         self.connectClient("bar")
         self.getMessages(1)
         self.sendLine(2, "LIST")
         m = self.getMessage(2)
-        if m.command == "321":
-            # skip RPL_LISTSTART
+        if m.command == RPL_LISTSTART:
+            # skip
             m = self.getMessage(2)
-        while m.command == "322" and m.params[1] == "&SERVER":
-            # ngircd adds this pseudo-channel
+        # skip local pseudo-channels listed by ngircd and ircu
+        while m.command == RPL_LIST and m.params[1].startswith("&"):
             m = self.getMessage(2)
         self.assertNotEqual(
             m.command,
-            "322",  # RPL_LIST
+            RPL_LIST,
             "LIST response gives (at least) one channel, whereas there " "is none.",
         )
         self.assertMessageMatch(
             m,
-            command="323",  # RPL_LISTEND
+            command=RPL_LISTEND,
             fail_msg="Second reply to LIST is not 322 (RPL_LIST) "
             "or 323 (RPL_LISTEND), or but: {msg}",
         )
 
     @cases.mark_specifications("RFC1459", "RFC2812")
+    @cases.xfailIfSoftware(["irc2"], "irc2 deprecated LIST")
     def testListOne(self):
         """When a channel exists, LIST should get it in a reply.
         <https://tools.ietf.org/html/rfc1459#section-4.2.6>
         <https://tools.ietf.org/html/rfc2812#section-3.2.6>
+
+        <https://modern.ircdocs.horse/#list-message>
         """
         self.connectClient("foo")
         self.connectClient("bar")
@@ -42,34 +73,331 @@ class ListTestCase(cases.BaseServerTestCase):
         self.getMessages(1)
         self.sendLine(2, "LIST")
         m = self.getMessage(2)
-        if m.command == "321":
-            # skip RPL_LISTSTART
+        if m.command == RPL_LISTSTART:
+            # skip
             m = self.getMessage(2)
         self.assertNotEqual(
             m.command,
-            "323",  # RPL_LISTEND
+            RPL_LISTEND,
             fail_msg="LIST response ended (ie. 323, aka RPL_LISTEND) "
             "without listing any channel, whereas there is one.",
         )
         self.assertMessageMatch(
             m,
-            command="322",  # RPL_LIST
+            command=RPL_LIST,
             fail_msg="Second reply to LIST is not 322 (RPL_LIST), "
             "nor 323 (RPL_LISTEND) but: {msg}",
         )
         m = self.getMessage(2)
-        while m.command == "322" and m.params[1] == "&SERVER":
-            # ngircd adds this pseudo-channel
+        # skip local pseudo-channels listed by ngircd and ircu
+        while m.command == RPL_LIST and m.params[1].startswith("&"):
             m = self.getMessage(2)
         self.assertNotEqual(
             m.command,
-            "322",  # RPL_LIST
+            RPL_LIST,
             fail_msg="LIST response gives (at least) two channels, "
             "whereas there is only one.",
         )
         self.assertMessageMatch(
             m,
-            command="323",  # RPL_LISTEND
+            command=RPL_LISTEND,
             fail_msg="Third reply to LIST is not 322 (RPL_LIST) "
             "or 323 (RPL_LISTEND), or but: {msg}",
         )
+
+    @cases.mark_specifications("RFC1459", "RFC2812")
+    @cases.xfailIfSoftware(
+        ["Charybdis", "Solanum"],
+        "Charybdis and Solanum insert ERR_NOSUCHNICK reply in LIST",
+    )
+    def testListNonexistent(self):
+        """LIST on a nonexistent channel does not send an error
+        response.
+        <https://tools.ietf.org/html/rfc1459#section-4.2.6>
+        <https://tools.ietf.org/html/rfc2812#section-3.2.6>
+        """
+        self.connectClient("bar")
+        self.sendLine(1, "LIST #nonexistent")
+        responses = {msg.command for msg in self.getMessages(1)}
+        # successful response MUST include RPL_LISTEND:
+        self.assertIn(RPL_LISTEND, responses)
+        # and MUST NOT include RPL_LIST (since there is no matching channel)
+        # or any error numerics:
+        self.assertLessEqual(responses, {RPL_LISTSTART, RPL_LISTEND})
+
+    @cases.mark_isupport("ELIST")
+    @cases.mark_specifications("Modern")
+    def testListMask(self):
+        """
+        "M: Searching based on mask."
+        -- <https://modern.ircdocs.horse/#elist-parameter>
+        -- https://datatracker.ietf.org/doc/html/draft-hardy-irc-isupport-00#section-4.8
+        """
+        self.connectClient("foo")
+
+        if "M" not in self.server_support.get("ELIST", ""):
+            raise runner.OptionalExtensionNotSupported("ELIST=M")
+
+        self.connectClient("bar")
+        self.sendLine(1, "JOIN #chan1")
+        self.getMessages(1)
+        self.sendLine(1, "JOIN #chan2")
+        self.getMessages(1)
+
+        self.sendLine(2, "LIST *an1")
+        self.assertEqual(self._parseChanList(2), {"#chan1"})
+
+        self.sendLine(2, "LIST *an2")
+        self.assertEqual(self._parseChanList(2), {"#chan2"})
+
+        self.sendLine(2, "LIST #c*n2")
+        self.assertEqual(self._parseChanList(2), {"#chan2"})
+
+        self.sendLine(2, "LIST *an3")
+        self.assertEqual(self._parseChanList(2), set())
+
+        self.sendLine(2, "LIST #ch*")
+        self.assertEqual(self._parseChanList(2), {"#chan1", "#chan2"})
+
+    @cases.mark_isupport("ELIST")
+    @cases.mark_specifications("Modern")
+    def testListNotMask(self):
+        """
+        " N: Searching based on a non-matching mask. i.e., the opposite of M."
+        -- <https://modern.ircdocs.horse/#elist-parameter>
+        -- https://datatracker.ietf.org/doc/html/draft-hardy-irc-isupport-00#section-4.8
+        """
+        self.connectClient("foo")
+
+        if "N" not in self.server_support.get("ELIST", ""):
+            raise runner.OptionalExtensionNotSupported("ELIST=N")
+
+        self.sendLine(1, "JOIN #chan1")
+        self.getMessages(1)
+        self.sendLine(1, "JOIN #chan2")
+        self.getMessages(1)
+
+        self.connectClient("bar")
+
+        self.sendLine(2, "LIST !*an1")
+        self.assertEqual(self._parseChanList(2), {"#chan2"})
+
+        self.sendLine(2, "LIST !*an2")
+        self.assertEqual(self._parseChanList(2), {"#chan1"})
+
+        self.sendLine(2, "LIST !#c*n2")
+        self.assertEqual(self._parseChanList(2), {"#chan1"})
+
+        self.sendLine(2, "LIST !*an3")
+        self.assertEqual(self._parseChanList(2), {"#chan1", "#chan2"})
+
+        self.sendLine(2, "LIST !#ch*")
+        self.assertEqual(self._parseChanList(2), set())
+
+    @cases.mark_isupport("ELIST")
+    @cases.mark_specifications("Modern")
+    def testListUsers(self):
+        """
+        "U: Searching based on user count within the channel, via the "<val" and
+        ">val" modifiers to search for a channel that has less or more than val users,
+        respectively."
+        -- <https://modern.ircdocs.horse/#elist-parameter>
+        -- https://datatracker.ietf.org/doc/html/draft-hardy-irc-isupport-00#section-4.8
+        """
+        self.connectClient("foo")
+
+        if "U" not in self.server_support.get("ELIST", ""):
+            raise runner.OptionalExtensionNotSupported("ELIST=U")
+
+        self.sendLine(1, "JOIN #chan1")
+        self.getMessages(1)
+        self.sendLine(1, "JOIN #chan2")
+        self.getMessages(1)
+
+        self.connectClient("bar")
+        self.sendLine(2, "JOIN #chan2")
+        self.getMessages(2)
+
+        self.connectClient("baz")
+
+        self.sendLine(3, "LIST >0")
+        self.assertEqual(self._parseChanList(3), {"#chan1", "#chan2"})
+
+        self.sendLine(3, "LIST <1")
+        self.assertEqual(self._parseChanList(3), set())
+
+        self.sendLine(3, "LIST <100")
+        self.assertEqual(self._parseChanList(3), {"#chan1", "#chan2"})
+
+        self.sendLine(3, "LIST >1")
+        self.assertEqual(self._parseChanList(3), {"#chan2"})
+
+        self.sendLine(3, "LIST <2")
+        self.assertEqual(self._parseChanList(3), {"#chan1"})
+
+        self.sendLine(3, "LIST <100")
+        self.assertEqual(self._parseChanList(3), {"#chan1", "#chan2"})
+
+
+class FaketimeListTestCase(_BasedListTestCase):
+    faketime = "+1y x30"  # for every wall clock second, 1 minute passed for the server
+
+    def _sleep_minutes(self, n):
+        for _ in range(n):
+            if self.controller.faketime_enabled:
+                # From the server's point of view, 1 min will pass
+                time.sleep(2)
+            else:
+                time.sleep(60)
+
+            # reply to pings
+            self.getMessages(1)
+            self.getMessages(2)
+
+    @cases.mark_isupport("ELIST")
+    @cases.mark_specifications("Modern")
+    @cases.xfailIfSoftware(
+        ["Plexus4", "Hybrid"],
+        "Hybrid and Plexus4 filter on ELIST=C with the opposite meaning",
+    )
+    @cases.xfailIf(
+        lambda self: bool(
+            self.controller.software_name == "UnrealIRCd"
+            and self.controller.software_version == 5
+        ),
+        "UnrealIRCd <6.0.3 filters on ELIST=C with the opposite meaning",
+    )
+    def testListCreationTime(self):
+        """
+        " C: Searching based on channel creation time, via the "C<val" and "C>val"
+        modifiers to search for a channel creation time that is higher or lower
+        than val."
+        -- <https://modern.ircdocs.horse/#elist-parameter>
+        -- https://datatracker.ietf.org/doc/html/draft-hardy-irc-isupport-00#section-4.8
+
+        Unfortunately, this is ambiguous, because "val" is a time delta (in minutes),
+        not a timestamp.
+
+        On InspIRCd and Charybdis/Solanum, "C<val" is interpreted as "the channel was
+        created less than <val> minutes ago
+
+        On UnrealIRCd, Plexus, and Hybrid, it is interpreted as "the channel's creation
+        time is a timestamp lower than <val> minutes ago" (ie. the exact opposite)
+
+        "C: Searching based on channel creation time, via the "C<val" and "C>val"
+        modifiers to search for a channel that was created either less than `val`
+        minutes ago, or more than `val` minutes ago, respectively"
+        -- https://github.com/ircdocs/modern-irc/pull/171
+        """
+        self.connectClient("foo")
+
+        if "C" not in self.server_support.get("ELIST", ""):
+            raise runner.OptionalExtensionNotSupported("ELIST=C")
+
+        self.connectClient("bar")
+        self.sendLine(1, "JOIN #chan1")
+        self.getMessages(1)
+
+        # Helps debugging
+        self.sendLine(1, "TIME")
+        self.getMessages(1)
+
+        self._sleep_minutes(2)
+
+        # Helps debugging
+        self.sendLine(1, "TIME")
+        self.getMessages(1)
+
+        self.sendLine(1, "JOIN #chan2")
+        self.getMessages(1)
+
+        self._sleep_minutes(1)
+
+        self.sendLine(2, "LIST C>2")
+        self.assertEqual(self._parseChanList(2), {"#chan1"})
+
+        self.sendLine(2, "LIST C<2")
+        self.assertEqual(self._parseChanList(2), {"#chan2"})
+
+        self.sendLine(2, "LIST C<0")
+        if self.controller.software_name == "InspIRCd":
+            self.assertEqual(self._parseChanList(2), {"#chan1", "#chan2"})
+        else:
+            self.assertEqual(self._parseChanList(2), set())
+
+        self.sendLine(2, "LIST C>0")
+        self.assertEqual(self._parseChanList(2), {"#chan1", "#chan2"})
+
+        self.sendLine(2, "LIST C<10")
+        self.assertEqual(self._parseChanList(2), {"#chan1", "#chan2"})
+
+    @cases.mark_isupport("ELIST")
+    @cases.mark_specifications("Modern")
+    @cases.xfailIf(
+        lambda self: bool(
+            self.controller.software_name == "UnrealIRCd"
+            and self.controller.software_version == 5
+        ),
+        "UnrealIRCd <6.0.3 advertises ELIST=T but does not implement it",
+    )
+    def testListTopicTime(self):
+        """
+        "T: Searching based on topic time, via the "T<val" and "T>val"
+        modifiers to search for a topic time that is lower or higher than
+        val respectively."
+        -- <https://modern.ircdocs.horse/#elist-parameter>
+        -- https://datatracker.ietf.org/doc/html/draft-hardy-irc-isupport-00#section-4.8
+
+        See testListCreationTime's docstring for comments on this.
+
+        "T: Searching based on topic set time, via the "T<val" and "T>val" modifiers
+        to search for a topic time that was set less than `val` minutes ago, or more
+        than `val` minutes ago, respectively."
+        -- https://github.com/ircdocs/modern-irc/pull/171
+        """
+        self.connectClient("foo")
+
+        if "T" not in self.server_support.get("ELIST", ""):
+            raise runner.OptionalExtensionNotSupported("ELIST=T")
+
+        self.connectClient("bar")
+        self.sendLine(1, "JOIN #chan1")
+        self.sendLine(1, "JOIN #chan2")
+        self.getMessages(1)
+
+        self.sendLine(1, "TOPIC #chan1 :First channel")
+        self.getMessages(1)
+
+        # Helps debugging
+        self.sendLine(1, "TIME")
+        self.getMessages(1)
+
+        self._sleep_minutes(2)
+
+        # Helps debugging
+        self.sendLine(1, "TIME")
+        self.getMessages(1)
+
+        self.sendLine(1, "TOPIC #chan2 :Second channel")
+        self.getMessages(1)
+
+        self._sleep_minutes(1)
+
+        self.sendLine(1, "LIST T>2")
+        self.assertEqual(self._parseChanList(1), {"#chan1"})
+
+        self.sendLine(1, "LIST T<2")
+        self.assertEqual(self._parseChanList(1), {"#chan2"})
+
+        self.sendLine(1, "LIST T<0")
+        if self.controller.software_name == "InspIRCd":
+            # Insp internally represents "LIST T>0" like "LIST"
+            self.assertEqual(self._parseChanList(1), {"#chan1", "#chan2"})
+        else:
+            self.assertEqual(self._parseChanList(1), set())
+
+        self.sendLine(1, "LIST T>0")
+        self.assertEqual(self._parseChanList(1), {"#chan1", "#chan2"})
+
+        self.sendLine(1, "LIST T<10")
+        self.assertEqual(self._parseChanList(1), {"#chan1", "#chan2"})

irctest/server_tests/lusers.py

@@ -1,3 +1,11 @@
+"""
+The LUSERS command  (`RFC 2812
+<https://datatracker.ietf.org/doc/html/rfc2812#section-3.4.2>`__,
+`Modern <https://modern.ircdocs.horse/#lusers-message>`__),
+which provides statistics on user counts.
+"""
+
+
 from dataclasses import dataclass
 import re
 from typing import Optional
@@ -14,6 +22,7 @@ from irctest.numerics import (
     RPL_LUSERUNKNOWN,
     RPL_YOUREOPER,
 )
+from irctest.patma import ANYSTR, StrRe
 
 # 3 numbers, delimited by spaces, possibly negative (eek)
 LUSERCLIENT_REGEX = re.compile(r"^.*( [-0-9]* ).*( [-0-9]* ).*( [-0-9]* ).*$")
@@ -50,10 +59,11 @@ class LusersTestCase(cases.BaseServerTestCase):
         self.assertIn(lusers.LocalTotal, (total, None))
         self.assertIn(lusers.LocalMax, (max_, None))
 
-    def getLusers(self, client):
+    def getLusers(self, client, allow_missing_265_266):
         self.sendLine(client, "LUSERS")
         messages = self.getMessages(client)
         by_numeric = dict((msg.command, msg) for msg in messages)
+        self.assertEqual(len(by_numeric), len(messages), "Duplicated numerics")
 
         result = LusersResult()
 
@@ -73,12 +83,31 @@ class LusersTestCase(cases.BaseServerTestCase):
             raise ValueError("corrupt reply for 251 RPL_LUSERCLIENT", luserclient_param)
 
         if RPL_LUSEROP in by_numeric:
+            self.assertMessageMatch(
+                by_numeric[RPL_LUSEROP], params=[client, StrRe("[0-9]+"), ANYSTR]
+            )
             result.Opers = int(by_numeric[RPL_LUSEROP].params[1])
         if RPL_LUSERUNKNOWN in by_numeric:
+            self.assertMessageMatch(
+                by_numeric[RPL_LUSERUNKNOWN], params=[client, StrRe("[0-9]+"), ANYSTR]
+            )
             result.Unregistered = int(by_numeric[RPL_LUSERUNKNOWN].params[1])
         if RPL_LUSERCHANNELS in by_numeric:
+            self.assertMessageMatch(
+                by_numeric[RPL_LUSERCHANNELS], params=[client, StrRe("[0-9]+"), ANYSTR]
+            )
             result.Channels = int(by_numeric[RPL_LUSERCHANNELS].params[1])
 
+        self.assertMessageMatch(by_numeric[RPL_LUSERCLIENT], params=[client, ANYSTR])
+        self.assertMessageMatch(by_numeric[RPL_LUSERME], params=[client, ANYSTR])
+
+        if (
+            allow_missing_265_266
+            and RPL_LOCALUSERS not in by_numeric
+            and RPL_GLOBALUSERS not in by_numeric
+        ):
+            return
+
         # FIXME: RPL_LOCALUSERS and RPL_GLOBALUSERS are only in Modern, not in RFC2812
         localusers = by_numeric[RPL_LOCALUSERS]
         globalusers = by_numeric[RPL_GLOBALUSERS]
@@ -114,23 +143,55 @@ class BasicLusersTestCase(LusersTestCase):
     @cases.mark_specifications("RFC2812")
     def testLusers(self):
         self.connectClient("bar", name="bar")
-        lusers = self.getLusers("bar")
+        self.getLusers("bar", True)
+
+        self.connectClient("qux", name="qux")
+        self.getLusers("qux", True)
+
+        self.sendLine("qux", "QUIT")
+        self.assertDisconnected("qux")
+        self.getLusers("bar", True)
+
+    @cases.mark_specifications("Modern")
+    @cases.xfailIfSoftware(
+        ["ircu2", "Nefarious", "snircd"],
+        "test depends on Modern behavior, not just RFC2812",
+    )
+    def testLusersFull(self):
+        self.connectClient("bar", name="bar")
+        lusers = self.getLusers("bar", False)
         self.assertLusersResult(lusers, unregistered=0, total=1, max_=1)
 
         self.connectClient("qux", name="qux")
-        lusers = self.getLusers("qux")
+        lusers = self.getLusers("qux", False)
         self.assertLusersResult(lusers, unregistered=0, total=2, max_=2)
 
         self.sendLine("qux", "QUIT")
         self.assertDisconnected("qux")
-        lusers = self.getLusers("bar")
+        lusers = self.getLusers("bar", False)
         self.assertLusersResult(lusers, unregistered=0, total=1, max_=2)
 
 
 class LusersUnregisteredTestCase(LusersTestCase):
     @cases.mark_specifications("RFC2812")
-    def testLusers(self):
-        self.doLusersTest()
+    @cases.xfailIfSoftware(
+        ["Nefarious"],
+        "Nefarious doesn't seem to distinguish unregistered users from normal ones",
+    )
+    def testLusersRfc2812(self):
+        self.doLusersTest(True)
+
+    @cases.mark_specifications("Modern")
+    @cases.xfailIfSoftware(
+        ["Nefarious"],
+        "Nefarious doesn't seem to distinguish unregistered users from normal ones",
+    )
+    @cases.xfailIfSoftware(
+        ["ircu2", "Nefarious", "snircd"],
+        "test depends on Modern behavior, not just RFC2812",
+    )
+    def testLusersFull(self):
+        self.doLusersTest(False)
 
     def _synchronize(self, client_name):
         """Synchronizes using a PING, but accept ERR_NOTREGISTERED as a response."""
@@ -145,34 +206,39 @@ class LusersUnregisteredTestCase(LusersTestCase):
                 "got neither PONG or ERR_NOTREGISTERED"
             )
 
-    def doLusersTest(self):
+    def doLusersTest(self, allow_missing_265_266):
         self.connectClient("bar", name="bar")
-        lusers = self.getLusers("bar")
-        self.assertLusersResult(lusers, unregistered=0, total=1, max_=1)
+        lusers = self.getLusers("bar", allow_missing_265_266)
+        if lusers:
+            self.assertLusersResult(lusers, unregistered=0, total=1, max_=1)
 
         self.addClient("qux")
         self.sendLine("qux", "NICK qux")
         self._synchronize("qux")
-        lusers = self.getLusers("bar")
-        self.assertLusersResult(lusers, unregistered=1, total=1, max_=1)
+        lusers = self.getLusers("bar", allow_missing_265_266)
+        if lusers:
+            self.assertLusersResult(lusers, unregistered=1, total=1, max_=1)
 
         self.addClient("bat")
         self.sendLine("bat", "NICK bat")
         self._synchronize("bat")
-        lusers = self.getLusers("bar")
-        self.assertLusersResult(lusers, unregistered=2, total=1, max_=1)
+        lusers = self.getLusers("bar", allow_missing_265_266)
+        if lusers:
+            self.assertLusersResult(lusers, unregistered=2, total=1, max_=1)
 
         # complete registration on one client
         self.sendLine("qux", "USER u s e r")
         self.getRegistrationMessage("qux")
-        lusers = self.getLusers("bar")
-        self.assertLusersResult(lusers, unregistered=1, total=2, max_=2)
+        lusers = self.getLusers("bar", allow_missing_265_266)
+        if lusers:
+            self.assertLusersResult(lusers, unregistered=1, total=2, max_=2)
 
         # QUIT the other without registering
         self.sendLine("bat", "QUIT")
         self.assertDisconnected("bat")
-        lusers = self.getLusers("bar")
-        self.assertLusersResult(lusers, unregistered=0, total=2, max_=2)
+        lusers = self.getLusers("bar", allow_missing_265_266)
+        if lusers:
+            self.assertLusersResult(lusers, unregistered=0, total=2, max_=2)
 
 
 class LusersUnregisteredDefaultInvisibleTestCase(LusersUnregisteredTestCase):
@@ -187,9 +253,13 @@ class LusersUnregisteredDefaultInvisibleTestCase(LusersUnregisteredTestCase):
         )
 
     @cases.mark_specifications("Ergo")
+    @cases.xfailIfSoftware(
+        ["Nefarious"],
+        "Nefarious doesn't seem to distinguish unregistered users from normal ones",
+    )
     def testLusers(self):
-        self.doLusersTest()
-        lusers = self.getLusers("bar")
+        self.doLusersTest(False)
+        lusers = self.getLusers("bar", False)
         self.assertLusersResult(lusers, unregistered=0, total=2, max_=2)
         self.assertEqual(lusers.GlobalInvisible, 2)
         self.assertEqual(lusers.GlobalVisible, 0)
@@ -199,7 +269,7 @@ class LuserOpersTestCase(LusersTestCase):
     @cases.mark_specifications("Ergo")
     def testLuserOpers(self):
         self.connectClient("bar", name="bar")
-        lusers = self.getLusers("bar")
+        lusers = self.getLusers("bar", False)
         self.assertLusersResult(lusers, unregistered=0, total=1, max_=1)
         self.assertIn(lusers.Opers, (0, None))
 
@@ -207,7 +277,7 @@ class LuserOpersTestCase(LusersTestCase):
         self.sendLine("bar", "OPER operuser operpassword")
         msgs = self.getMessages("bar")
         self.assertIn(RPL_YOUREOPER, {msg.command for msg in msgs})
-        lusers = self.getLusers("bar")
+        lusers = self.getLusers("bar", False)
         self.assertLusersResult(lusers, unregistered=0, total=1, max_=1)
         self.assertEqual(lusers.Opers, 1)
 
@@ -215,7 +285,7 @@ class LuserOpersTestCase(LusersTestCase):
         self.connectClient("qux", name="qux")
         self.sendLine("qux", "OPER operuser operpassword")
         self.getMessages("qux")
-        lusers = self.getLusers("bar")
+        lusers = self.getLusers("bar", False)
         self.assertLusersResult(lusers, unregistered=0, total=2, max_=2)
         self.assertEqual(lusers.Opers, 2)
 
@@ -223,14 +293,14 @@ class LuserOpersTestCase(LusersTestCase):
         self.sendLine("bar", "MODE bar -o")
         msgs = self.getMessages("bar")
         self.assertIn("MODE", {msg.command for msg in msgs})
-        lusers = self.getLusers("bar")
+        lusers = self.getLusers("bar", False)
         self.assertLusersResult(lusers, unregistered=0, total=2, max_=2)
         self.assertEqual(lusers.Opers, 1)
 
         # remove oper by quit
         self.sendLine("qux", "QUIT")
         self.assertDisconnected("qux")
-        lusers = self.getLusers("bar")
+        lusers = self.getLusers("bar", False)
         self.assertLusersResult(lusers, unregistered=0, total=1, max_=2)
         self.assertEqual(lusers.Opers, 0)
 
@@ -247,13 +317,13 @@ class ErgoInvisibleDefaultTestCase(LusersTestCase):
     @cases.mark_specifications("Ergo")
     def testLusers(self):
         self.connectClient("bar", name="bar")
-        lusers = self.getLusers("bar")
+        lusers = self.getLusers("bar", False)
         self.assertLusersResult(lusers, unregistered=0, total=1, max_=1)
         self.assertEqual(lusers.GlobalInvisible, 1)
         self.assertEqual(lusers.GlobalVisible, 0)
 
         self.connectClient("qux", name="qux")
-        lusers = self.getLusers("qux")
+        lusers = self.getLusers("qux", False)
         self.assertLusersResult(lusers, unregistered=0, total=2, max_=2)
         self.assertEqual(lusers.GlobalInvisible, 2)
         self.assertEqual(lusers.GlobalVisible, 0)
@@ -261,7 +331,7 @@ class ErgoInvisibleDefaultTestCase(LusersTestCase):
         # remove +i with MODE
         self.sendLine("bar", "MODE bar -i")
         msgs = self.getMessages("bar")
-        lusers = self.getLusers("bar")
+        lusers = self.getLusers("bar", False)
         self.assertIn("MODE", {msg.command for msg in msgs})
         self.assertLusersResult(lusers, unregistered=0, total=2, max_=2)
         self.assertEqual(lusers.GlobalInvisible, 1)
@@ -270,7 +340,7 @@ class ErgoInvisibleDefaultTestCase(LusersTestCase):
         # disconnect invisible user
         self.sendLine("qux", "QUIT")
         self.assertDisconnected("qux")
-        lusers = self.getLusers("bar")
+        lusers = self.getLusers("bar", False)
         self.assertLusersResult(lusers, unregistered=0, total=1, max_=2)
         self.assertEqual(lusers.GlobalInvisible, 0)
         self.assertEqual(lusers.GlobalVisible, 1)

irctest/server_tests/message_tags.py

@@ -1,5 +1,5 @@
 """
-https://ircv3.net/specs/extensions/message-tags.html
+`IRCv3 message-tags <https://ircv3.net/specs/extensions/message-tags>`_
 """
 
 import pytest
@@ -10,7 +10,7 @@ from irctest.numerics import ERR_INPUTTOOLONG
 from irctest.patma import ANYDICT, ANYSTR, StrRe
 
 
-class MessageTagsTestCase(cases.BaseServerTestCase, cases.OptionalityHelper):
+class MessageTagsTestCase(cases.BaseServerTestCase):
     @pytest.mark.arbitrary_client_tags
     @cases.mark_capabilities("message-tags")
     def testBasic(self):

irctest/server_tests/messages.py

@@ -1,6 +1,5 @@
 """
-Section 3.2 of RFC 2812
-<https://tools.ietf.org/html/rfc2812#section-3.3>
+The PRIVMSG and NOTICE commands.
 """
 
 from irctest import cases
@@ -33,6 +32,26 @@ class PrivmsgTestCase(cases.BaseServerTestCase):
         # ERR_NOSUCHNICK, ERR_NOSUCHCHANNEL, or ERR_CANNOTSENDTOCHAN
         self.assertIn(msg.command, ("401", "403", "404"))
 
+    @cases.mark_specifications("RFC1459", "RFC2812")
+    def testPrivmsgToUser(self):
+        """<https://tools.ietf.org/html/rfc2812#section-3.3.1>"""
+        self.connectClient("foo")
+        self.connectClient("bar")
+        self.sendLine(1, "PRIVMSG bar :hey there!")
+        self.getMessages(1)
+        pms = [msg for msg in self.getMessages(2) if msg.command == "PRIVMSG"]
+        self.assertEqual(len(pms), 1)
+        self.assertMessageMatch(pms[0], command="PRIVMSG", params=["bar", "hey there!"])
+
+    @cases.mark_specifications("RFC1459", "RFC2812")
+    def testPrivmsgNonexistentUser(self):
+        """https://tools.ietf.org/html/rfc2812#section-3.3.1"""
+        self.connectClient("foo")
+        self.sendLine(1, "PRIVMSG bar :hey there!")
+        msg = self.getMessage(1)
+        # ERR_NOSUCHNICK
+        self.assertIn(msg.command, ("401"))
+
 
 class NoticeTestCase(cases.BaseServerTestCase):
     @cases.mark_specifications("RFC1459", "RFC2812")
@@ -52,6 +71,15 @@ class NoticeTestCase(cases.BaseServerTestCase):
         )
 
     @cases.mark_specifications("RFC1459", "RFC2812")
+    @cases.xfailIfSoftware(
+        ["InspIRCd"],
+        "replies with ERR_NOSUCHCHANNEL to NOTICE to non-existent channels",
+    )
+    @cases.xfailIfSoftware(
+        ["UnrealIRCd"],
+        "replies with ERR_NOSUCHCHANNEL to NOTICE to non-existent channels: "
+        "https://bugs.unrealircd.org/view.php?id=5949",
+    )
     def testNoticeNonexistentChannel(self):
         """
         "automatic replies must never be
@@ -72,6 +100,14 @@ class NoticeTestCase(cases.BaseServerTestCase):
 
 class TagsTestCase(cases.BaseServerTestCase):
     @cases.mark_capabilities("message-tags")
+    @cases.xfailIf(
+        lambda self: bool(
+            self.controller.software_name == "UnrealIRCd"
+            and self.controller.software_version == 5
+        ),
+        "UnrealIRCd <6.0.7 dropped messages with excessively large tags: "
+        "https://bugs.unrealircd.org/view.php?id=5947",
+    )
     def testLineTooLong(self):
         self.connectClient("bar", capabilities=["message-tags"], skip_if_cap_nak=True)
         self.connectClient(

irctest/server_tests/metadata.py

@@ -1,14 +1,13 @@
 """
-Tests METADATA features.
-<http://ircv3.net/specs/core/metadata-3.2.html>
+`Deprecated IRCv3 Metadata <https://ircv3.net/specs/core/metadata-3.2>`_
 """
 
 from irctest import cases
 
 
 class MetadataTestCase(cases.BaseServerTestCase):
-    valid_metadata_keys = {"valid_key1", "valid_key2"}
-    invalid_metadata_keys = {"invalid_key1", "invalid_key2"}
+    valid_metadata_keys = {"display-name", "avatar"}
+    invalid_metadata_keys = {"indisplay-name", "inavatar"}
 
     @cases.mark_specifications("IRCv3", deprecated=True)
     def testInIsupport(self):
@@ -37,7 +36,7 @@ class MetadataTestCase(cases.BaseServerTestCase):
     def testGetOneUnsetValid(self):
         """<http://ircv3.net/specs/core/metadata-3.2.html#metadata-get>"""
         self.connectClient("foo")
-        self.sendLine(1, "METADATA * GET valid_key1")
+        self.sendLine(1, "METADATA * GET display-name")
         m = self.getMessage(1)
         self.assertMessageMatch(
             m,
@@ -53,7 +52,7 @@ class MetadataTestCase(cases.BaseServerTestCase):
         -- <http://ircv3.net/specs/core/metadata-3.2.html#metadata-get>
         """
         self.connectClient("foo")
-        self.sendLine(1, "METADATA * GET valid_key1 valid_key2")
+        self.sendLine(1, "METADATA * GET display-name avatar")
         m = self.getMessage(1)
         self.assertMessageMatch(
             m,
@@ -63,10 +62,10 @@ class MetadataTestCase(cases.BaseServerTestCase):
         )
         self.assertEqual(
             m.params[1],
-            "valid_key1",
+            "display-name",
             m,
-            fail_msg="Response to “METADATA * GET valid_key1 valid_key2” "
-            "did not respond to valid_key1 first: {msg}",
+            fail_msg="Response to “METADATA * GET display-name avatar” "
+            "did not respond to display-name first: {msg}",
         )
         m = self.getMessage(1)
         self.assertMessageMatch(
@@ -77,10 +76,10 @@ class MetadataTestCase(cases.BaseServerTestCase):
         )
         self.assertEqual(
             m.params[1],
-            "valid_key2",
+            "avatar",
             m,
-            fail_msg="Response to “METADATA * GET valid_key1 valid_key2” "
-            "did not respond to valid_key2 as second response: {msg}",
+            fail_msg="Response to “METADATA * GET display-name avatar” "
+            "did not respond to avatar as second response: {msg}",
         )
 
     @cases.mark_specifications("IRCv3", deprecated=True)
@@ -136,7 +135,7 @@ class MetadataTestCase(cases.BaseServerTestCase):
         )
         self.assertEqual(
             m.params[1],
-            "valid_key1",
+            "display-name",
             m,
             fail_msg="Second param of 761 after setting “{expects}” to "
             "“{}” is not “{expects}”: {msg}.",
@@ -191,7 +190,7 @@ class MetadataTestCase(cases.BaseServerTestCase):
     def testSetGetValid(self):
         """<http://ircv3.net/specs/core/metadata-3.2.html>"""
         self.connectClient("foo")
-        self.assertSetGetValue("*", "valid_key1", "myvalue")
+        self.assertSetGetValue("*", "display-name", "myvalue")
 
     @cases.mark_specifications("IRCv3", deprecated=True)
     def testSetGetZeroCharInValue(self):
@@ -199,7 +198,7 @@ class MetadataTestCase(cases.BaseServerTestCase):
         -- <http://ircv3.net/specs/core/metadata-3.2.html#metadata-restrictions>
         """
         self.connectClient("foo")
-        self.assertSetGetValue("*", "valid_key1", "zero->\0<-zero", "zero->\\0<-zero")
+        self.assertSetGetValue("*", "display-name", "zero->\0<-zero", "zero->\\0<-zero")
 
     @cases.mark_specifications("IRCv3", deprecated=True)
     def testSetGetHeartInValue(self):
@@ -210,7 +209,7 @@ class MetadataTestCase(cases.BaseServerTestCase):
         self.connectClient("foo")
         self.assertSetGetValue(
             "*",
-            "valid_key1",
+            "display-name",
             "->{}<-".format(heart),
             "zero->{}<-zero".format(heart.encode()),
         )
@@ -224,7 +223,7 @@ class MetadataTestCase(cases.BaseServerTestCase):
         # Sending directly because it is not valid UTF-8 so Python would
         # not like it
         self.clients[1].conn.sendall(
-            b"METADATA * SET valid_key1 " b":invalid UTF-8 ->\xc3<-\r\n"
+            b"METADATA * SET display-name " b":invalid UTF-8 ->\xc3<-\r\n"
         )
         commands = {m.command for m in self.getMessages(1)}
         self.assertNotIn(
@@ -234,7 +233,7 @@ class MetadataTestCase(cases.BaseServerTestCase):
             "UTF-8 was answered with 761 (RPL_KEYVALUE)",
         )
         self.clients[1].conn.sendall(
-            b"METADATA * SET valid_key1 " b":invalid UTF-8: \xc3\r\n"
+            b"METADATA * SET display-name " b":invalid UTF-8: \xc3\r\n"
         )
         commands = {m.command for m in self.getMessages(1)}
         self.assertNotIn(

irctest/server_tests/monitor.py

@@ -1,9 +1,11 @@
 """
-<http://ircv3.net/specs/core/monitor-3.2.html>
+`IRCv3 MONITOR <https://ircv3.net/specs/extensions/monitor>`_
+and `IRCv3 extended-monitor` <https://ircv3.net/specs/extensions/extended-monitor>`_
 """
 
-from irctest import cases
-from irctest.basecontrollers import NotImplementedByController
+import pytest
+
+from irctest import cases, runner
 from irctest.client_mock import NoMessageException
 from irctest.numerics import (
     RPL_ENDOFMONLIST,
@@ -14,10 +16,10 @@ from irctest.numerics import (
 from irctest.patma import ANYSTR, StrRe
 
 
-class MonitorTestCase(cases.BaseServerTestCase):
+class _BaseMonitorTestCase(cases.BaseServerTestCase):
     def check_server_support(self):
         if "MONITOR" not in self.server_support:
-            raise NotImplementedByController("MONITOR")
+            raise runner.IsupportTokenNotSupported("MONITOR")
 
     def assertMononline(self, client, nick, m=None):
         if not m:
@@ -43,6 +45,8 @@ class MonitorTestCase(cases.BaseServerTestCase):
             extra_format=(nick,),
         )
 
+
+class MonitorTestCase(_BaseMonitorTestCase):
     @cases.mark_specifications("IRCv3")
     @cases.mark_isupport("MONITOR")
     def testMonitorOneDisconnected(self):
@@ -188,15 +192,12 @@ class MonitorTestCase(cases.BaseServerTestCase):
         self.sendLine(1, "MONITOR + *!username@127.0.0.1")
         try:
             m = self.getMessage(1)
-            self.assertNotEqual(
-                m.command,
-                "731",
-                m,
-                fail_msg="Got 731 (RPL_MONOFFLINE) after adding a monitor "
-                "on a mask: {msg}",
-            )
+            self.assertMessageMatch(m, command="731")
         except NoMessageException:
             pass
+        else:
+            m = self.getMessage(1)
+            self.assertMessageMatch(m, command="731")
         self.connectClient("bar")
         try:
             m = self.getMessage(1)
@@ -299,10 +300,11 @@ class MonitorTestCase(cases.BaseServerTestCase):
         self.sendLine(2, "NICK qux")
         self.getMessages(2)
         mononline = self.getMessages(1)[0]
-        self.assertEqual(mononline.command, RPL_MONONLINE)
-        self.assertEqual(len(mononline.params), 2, mononline.params)
-        self.assertIn(mononline.params[0], ("bar", "*"))
-        self.assertEqual(mononline.params[1].split("!")[0], "qux")
+        self.assertMessageMatch(
+            mononline,
+            command=RPL_MONONLINE,
+            params=[StrRe(r"(bar|\*)"), StrRe("qux(!.*)?")],
+        )
 
         # no numerics for a case change
         self.sendLine(2, "NICK QUX")
@@ -313,7 +315,246 @@ class MonitorTestCase(cases.BaseServerTestCase):
         self.getMessages(2)
         monoffline = self.getMessages(1)[0]
         # should get RPL_MONOFFLINE with the current unfolded nick
-        self.assertEqual(monoffline.command, RPL_MONOFFLINE)
-        self.assertEqual(len(monoffline.params), 2, monoffline.params)
-        self.assertIn(monoffline.params[0], ("bar", "*"))
-        self.assertEqual(monoffline.params[1].split("!")[0], "QUX")
+        self.assertMessageMatch(
+            monoffline,
+            command=RPL_MONOFFLINE,
+            params=[StrRe(r"(bar|\*)"), "QUX"],
+        )
+
+
+class _BaseExtendedMonitorTestCase(_BaseMonitorTestCase):
+    def _setupExtendedMonitor(self, monitor_before_connect, watcher_caps, watched_caps):
+        """Tests https://ircv3.net/specs/extensions/extended-monitor.html"""
+        self.connectClient(
+            "foo",
+            capabilities=["draft/extended-monitor", *watcher_caps],
+            skip_if_cap_nak=True,
+        )
+
+        if monitor_before_connect:
+            self.sendLine(1, "MONITOR + bar")
+            self.getMessages(1)
+            self.connectClient("bar", capabilities=watched_caps, skip_if_cap_nak=True)
+            self.getMessages(2)
+        else:
+            self.connectClient("bar", capabilities=watched_caps, skip_if_cap_nak=True)
+            self.getMessages(2)
+            self.sendLine(1, "MONITOR + bar")
+
+        self.assertMononline(1, "bar")
+        self.assertEqual(self.getMessages(1), [])
+
+
+class ExtendedMonitorTestCase(_BaseExtendedMonitorTestCase):
+    @cases.mark_specifications("IRCv3")
+    @cases.mark_capabilities("extended-monitor", "away-notify")
+    @pytest.mark.parametrize(
+        "monitor_before_connect,cap",
+        [
+            pytest.param(
+                monitor_before_connect,
+                cap,
+                id=("monitor_before_connect" if monitor_before_connect else "")
+                + "-"
+                + ("with-cap" if cap else ""),
+            )
+            for monitor_before_connect in [True, False]
+            for cap in [True, False]
+        ],
+    )
+    def testExtendedMonitorAway(self, monitor_before_connect, cap):
+        """Tests https://ircv3.net/specs/extensions/extended-monitor.html
+        with https://ircv3.net/specs/extensions/away-notify
+        """
+        if cap:
+            self._setupExtendedMonitor(
+                monitor_before_connect, ["away-notify"], ["away-notify"]
+            )
+        else:
+            self._setupExtendedMonitor(monitor_before_connect, ["away-notify"], [])
+
+        self.sendLine(2, "AWAY :afk")
+        self.getMessages(2)
+        self.assertMessageMatch(
+            self.getMessage(1), nick="bar", command="AWAY", params=["afk"]
+        )
+        self.assertEqual(self.getMessages(1), [], "watcher got unexpected messages")
+
+        self.sendLine(2, "AWAY")
+        self.getMessages(2)
+        self.assertMessageMatch(
+            self.getMessage(1), nick="bar", command="AWAY", params=[]
+        )
+        self.assertEqual(self.getMessages(1), [], "watcher got unexpected messages")
+
+    @cases.mark_specifications("IRCv3")
+    @cases.mark_capabilities("extended-monitor", "away-notify")
+    @pytest.mark.parametrize(
+        "monitor_before_connect,cap",
+        [
+            pytest.param(
+                monitor_before_connect,
+                cap,
+                id=("monitor_before_connect" if monitor_before_connect else "")
+                + "-"
+                + ("with-cap" if cap else ""),
+            )
+            for monitor_before_connect in [True, False]
+            for cap in [True, False]
+        ],
+    )
+    def testExtendedMonitorAwayNoCap(self, monitor_before_connect, cap):
+        """Tests https://ircv3.net/specs/extensions/extended-monitor.html
+        does nothing when ``away-notify`` is not enabled by the watcher
+        """
+        if cap:
+            self._setupExtendedMonitor(monitor_before_connect, [], ["away-notify"])
+        else:
+            self._setupExtendedMonitor(monitor_before_connect, [], [])
+
+        self.sendLine(2, "AWAY :afk")
+        self.getMessages(2)
+        self.assertEqual(self.getMessages(1), [], "watcher got unexpected messages")
+
+        self.sendLine(2, "AWAY")
+        self.getMessages(2)
+        self.assertEqual(self.getMessages(1), [], "watcher got unexpected messages")
+
+    @cases.mark_specifications("IRCv3")
+    @cases.mark_capabilities("extended-monitor", "setname")
+    @pytest.mark.parametrize("monitor_before_connect", [True, False])
+    def testExtendedMonitorSetName(self, monitor_before_connect):
+        """Tests https://ircv3.net/specs/extensions/extended-monitor.html
+        with https://ircv3.net/specs/extensions/setname
+        """
+        self._setupExtendedMonitor(monitor_before_connect, ["setname"], ["setname"])
+
+        self.sendLine(2, "SETNAME :new name")
+        self.getMessages(2)
+        self.assertMessageMatch(
+            self.getMessage(1), nick="bar", command="SETNAME", params=["new name"]
+        )
+        self.assertEqual(self.getMessages(1), [], "watcher got unexpected messages")
+
+    @cases.mark_specifications("IRCv3")
+    @cases.mark_capabilities("extended-monitor", "setname")
+    @pytest.mark.parametrize("monitor_before_connect", [True, False])
+    def testExtendedMonitorSetNameNoCap(self, monitor_before_connect):
+        """Tests https://ircv3.net/specs/extensions/extended-monitor.html
+        does nothing when ``setname`` is not enabled by the watcher
+        """
+        self._setupExtendedMonitor(monitor_before_connect, [], ["setname"])
+
+        self.sendLine(2, "SETNAME :new name")
+        self.getMessages(2)
+        self.assertEqual(self.getMessages(1), [], "watcher got unexpected messages")
+
+
+@cases.mark_services
+class AuthenticatedExtendedMonitorTestCase(_BaseExtendedMonitorTestCase):
+    @cases.mark_specifications("IRCv3")
+    @cases.mark_capabilities("extended-monitor", "account-notify")
+    @pytest.mark.parametrize(
+        "monitor_before_connect,cap",
+        [
+            pytest.param(
+                monitor_before_connect,
+                cap,
+                id=("monitor_before_connect" if monitor_before_connect else "")
+                + "-"
+                + ("with-cap" if cap else ""),
+            )
+            for monitor_before_connect in [True, False]
+            for cap in [True, False]
+        ],
+    )
+    def testExtendedMonitorAccountNotify(self, monitor_before_connect, cap):
+        """Tests https://ircv3.net/specs/extensions/extended-monitor.html
+        does nothing when ``account-notify`` is not enabled by the watcher
+        """
+        self.controller.registerUser(self, "jilles", "sesame")
+
+        if cap:
+            self._setupExtendedMonitor(
+                monitor_before_connect,
+                ["account-notify"],
+                ["account-notify", "sasl", "cap-notify"],
+            )
+        else:
+            self._setupExtendedMonitor(
+                monitor_before_connect, ["account-notify"], ["sasl", "cap-notify"]
+            )
+
+        self.sendLine(2, "AUTHENTICATE PLAIN")
+        m = self.getRegistrationMessage(2)
+        self.assertMessageMatch(
+            m,
+            command="AUTHENTICATE",
+            params=["+"],
+            fail_msg="Sent “AUTHENTICATE PLAIN”, server should have "
+            "replied with “AUTHENTICATE +”, but instead sent: {msg}",
+        )
+        self.sendLine(2, "AUTHENTICATE amlsbGVzAGppbGxlcwBzZXNhbWU=")
+        m = self.getRegistrationMessage(2)
+        self.assertMessageMatch(
+            m,
+            command="900",
+            fail_msg="Did not send 900 after correct SASL authentication.",
+        )
+        self.getMessages(2)
+
+        self.assertMessageMatch(
+            self.getMessage(1), nick="bar", command="ACCOUNT", params=["jilles"]
+        )
+        self.assertEqual(self.getMessages(1), [], "watcher got unexpected messages")
+
+    @cases.mark_specifications("IRCv3")
+    @cases.mark_capabilities("extended-monitor", "account-notify")
+    @pytest.mark.parametrize(
+        "monitor_before_connect,cap",
+        [
+            pytest.param(
+                monitor_before_connect,
+                cap,
+                id=("monitor_before_connect" if monitor_before_connect else "")
+                + "-"
+                + ("with-cap" if cap else ""),
+            )
+            for monitor_before_connect in [True, False]
+            for cap in [True, False]
+        ],
+    )
+    def testExtendedMonitorAccountNotifyNoCap(self, monitor_before_connect, cap):
+        """Tests https://ircv3.net/specs/extensions/extended-monitor.html
+        does nothing when ``account-notify`` is not enabled by the watcher
+        """
+        self.controller.registerUser(self, "jilles", "sesame")
+
+        if cap:
+            self._setupExtendedMonitor(
+                monitor_before_connect, [], ["account-notify", "sasl", "cap-notify"]
+            )
+        else:
+            self._setupExtendedMonitor(
+                monitor_before_connect, [], ["sasl", "cap-notify"]
+            )
+
+        self.sendLine(2, "AUTHENTICATE PLAIN")
+        m = self.getRegistrationMessage(2)
+        self.assertMessageMatch(
+            m,
+            command="AUTHENTICATE",
+            params=["+"],
+            fail_msg="Sent “AUTHENTICATE PLAIN”, server should have "
+            "replied with “AUTHENTICATE +”, but instead sent: {msg}",
+        )
+        self.sendLine(2, "AUTHENTICATE amlsbGVzAGppbGxlcwBzZXNhbWU=")
+        m = self.getRegistrationMessage(2)
+        self.assertMessageMatch(
+            m,
+            command="900",
+            fail_msg="Did not send 900 after correct SASL authentication.",
+        )
+        self.getMessages(2)
+
+        self.assertEqual(self.getMessages(1), [], "watcher got unexpected messages")

irctest/server_tests/multi_prefix.py

@@ -1,6 +1,5 @@
 """
-Tests multi-prefix.
-<http://ircv3.net/specs/extensions/multi-prefix-3.1.html>
+`IRCv3 multi-prefix <https://ircv3.net/specs/extensions/multi-prefix>`_
 """
 
 from irctest import cases

irctest/server_tests/multiline.py

@@ -1,5 +1,5 @@
 """
-draft/multiline
+`Draft IRCv3 multiline <https://ircv3.net/specs/extensions/multiline>`_
 """
 
 from irctest import cases
@@ -12,7 +12,7 @@ CONCAT_TAG = "draft/multiline-concat"
 base_caps = ["message-tags", "batch", "echo-message", "server-time", "labeled-response"]
 
 
-class MultilineTestCase(cases.BaseServerTestCase, cases.OptionalityHelper):
+class MultilineTestCase(cases.BaseServerTestCase):
     @cases.mark_capabilities("draft/multiline")
     def testBasic(self):
         self.connectClient(

irctest/server_tests/names.py

@@ -1,9 +1,114 @@
-from irctest import cases
-from irctest.numerics import RPL_ENDOFNAMES
-from irctest.patma import ANYSTR
+"""
+The NAMES command  (`RFC 1459
+<https://datatracker.ietf.org/doc/html/rfc1459#section-4.2.5>`__,
+`RFC 2812 <https://datatracker.ietf.org/doc/html/rfc2812#section-3.2.5>`__,
+`Modern <https://modern.ircdocs.horse/#names-message>`__)
+"""
+
+from irctest import cases, runner
+from irctest.numerics import RPL_ENDOFNAMES, RPL_NAMREPLY
+from irctest.patma import ANYSTR, StrRe
 
 
 class NamesTestCase(cases.BaseServerTestCase):
+    def _testNames(self, symbol):
+        self.connectClient("nick1")
+        self.sendLine(1, "JOIN #chan")
+        self.getMessages(1)
+        self.connectClient("nick2")
+        self.sendLine(2, "JOIN #chan")
+        self.getMessages(2)
+        self.getMessages(1)
+
+        self.sendLine(1, "NAMES #chan")
+
+        # TODO: It is technically allowed to have one line for each;
+        # but noone does that.
+        self.assertMessageMatch(
+            self.getMessage(1),
+            command=RPL_NAMREPLY,
+            params=[
+                "nick1",
+                *(["="] if symbol else []),
+                "#chan",
+                StrRe("(nick2 @nick1|@nick1 nick2)"),
+            ],
+        )
+
+        self.assertMessageMatch(
+            self.getMessage(1),
+            command=RPL_ENDOFNAMES,
+            params=["nick1", "#chan", ANYSTR],
+        )
+
+    @cases.mark_specifications("RFC1459", deprecated=True)
+    def testNames1459(self):
+        """
+        https://modern.ircdocs.horse/#names-message
+        https://datatracker.ietf.org/doc/html/rfc1459#section-4.2.5
+        https://datatracker.ietf.org/doc/html/rfc2812#section-3.2.5
+        """
+        self._testNames(symbol=False)
+
+    @cases.mark_specifications("RFC1459", "RFC2812", "Modern")
+    def testNames2812(self):
+        """
+        https://modern.ircdocs.horse/#names-message
+        https://datatracker.ietf.org/doc/html/rfc1459#section-4.2.5
+        https://datatracker.ietf.org/doc/html/rfc2812#section-3.2.5
+        """
+        self._testNames(symbol=True)
+
+    def _testNamesMultipleChannels(self, symbol):
+        self.connectClient("nick1")
+
+        if self.targmax.get("NAMES", "1") == "1":
+            raise runner.OptionalExtensionNotSupported("Multi-target NAMES")
+
+        self.sendLine(1, "JOIN #chan1")
+        self.sendLine(1, "JOIN #chan2")
+        self.getMessages(1)
+
+        self.sendLine(1, "NAMES #chan1,#chan2")
+
+        # TODO: order is unspecified
+        self.assertMessageMatch(
+            self.getMessage(1),
+            command=RPL_NAMREPLY,
+            params=["nick1", *(["="] if symbol else []), "#chan1", "@nick1"],
+        )
+        self.assertMessageMatch(
+            self.getMessage(1),
+            command=RPL_NAMREPLY,
+            params=["nick1", *(["="] if symbol else []), "#chan2", "@nick1"],
+        )
+
+        self.assertMessageMatch(
+            self.getMessage(1),
+            command=RPL_ENDOFNAMES,
+            params=["nick1", "#chan1,#chan2", ANYSTR],
+        )
+
+    @cases.mark_isupport("TARGMAX")
+    @cases.mark_specifications("RFC1459", deprecated=True)
+    def testNamesMultipleChannels1459(self):
+        """
+        https://modern.ircdocs.horse/#names-message
+        https://datatracker.ietf.org/doc/html/rfc1459#section-4.2.5
+        https://datatracker.ietf.org/doc/html/rfc2812#section-3.2.5
+        """
+        self._testNamesMultipleChannels(symbol=False)
+
+    @cases.mark_isupport("TARGMAX")
+    @cases.mark_specifications("RFC1459", "RFC2812", "Modern")
+    def testNamesMultipleChannels2812(self):
+        """
+        https://modern.ircdocs.horse/#names-message
+        https://datatracker.ietf.org/doc/html/rfc1459#section-4.2.5
+        https://datatracker.ietf.org/doc/html/rfc2812#section-3.2.5
+        """
+        self._testNamesMultipleChannels(symbol=True)
+
     @cases.mark_specifications("RFC1459", "RFC2812", "Modern")
     def testNamesInvalidChannel(self):
         """
@@ -47,3 +152,101 @@ class NamesTestCase(cases.BaseServerTestCase):
             command=RPL_ENDOFNAMES,
             params=["foo", "#nonexisting", ANYSTR],
         )
+
+    def _testNamesNoArgumentPublic(self, symbol):
+        self.connectClient("nick1")
+        self.getMessages(1)
+        self.sendLine(1, "JOIN #chan1")
+        self.connectClient("nick2")
+        self.sendLine(2, "JOIN #chan2")
+        self.sendLine(2, "MODE #chan2 -sp")
+        self.getMessages(1)
+        self.getMessages(2)
+
+        self.sendLine(1, "NAMES")
+
+        # TODO: order is unspecified
+        self.assertMessageMatch(
+            self.getMessage(1),
+            command=RPL_NAMREPLY,
+            params=["nick1", *(["="] if symbol else []), "#chan1", "@nick1"],
+        )
+        self.assertMessageMatch(
+            self.getMessage(1),
+            command=RPL_NAMREPLY,
+            params=["nick1", *(["="] if symbol else []), "#chan2", "@nick2"],
+        )
+
+        self.assertMessageMatch(
+            self.getMessage(1),
+            command=RPL_ENDOFNAMES,
+            params=["nick1", ANYSTR, ANYSTR],
+        )
+
+    @cases.mark_specifications("RFC1459", deprecated=True)
+    def testNamesNoArgumentPublic1459(self):
+        """
+        "If no <channel> parameter is given, a list of all channels and their
+        occupants is returned."
+        -- https://datatracker.ietf.org/doc/html/rfc1459#section-4.2.5
+        -- https://datatracker.ietf.org/doc/html/rfc2812#section-3.2.5
+        """
+        self._testNamesNoArgumentPublic(symbol=False)
+
+    @cases.mark_specifications("RFC2812", deprecated=True)
+    def testNamesNoArgumentPublic2812(self):
+        """
+        "If no <channel> parameter is given, a list of all channels and their
+        occupants is returned."
+        -- https://datatracker.ietf.org/doc/html/rfc1459#section-4.2.5
+        -- https://datatracker.ietf.org/doc/html/rfc2812#section-3.2.5
+        """
+        self._testNamesNoArgumentPublic(symbol=True)
+
+    def _testNamesNoArgumentPrivate(self, symbol):
+        self.connectClient("nick1")
+        self.getMessages(1)
+        self.sendLine(1, "JOIN #chan1")
+        self.connectClient("nick2")
+        self.sendLine(2, "JOIN #chan2")
+        self.sendLine(2, "MODE #chan2 +sp")
+        self.getMessages(1)
+        self.getMessages(2)
+
+        self.sendLine(1, "NAMES")
+
+        self.assertMessageMatch(
+            self.getMessage(1),
+            command=RPL_NAMREPLY,
+            params=["nick1", *(["="] if symbol else []), "#chan1", "@nick1"],
+        )
+
+        self.assertMessageMatch(
+            self.getMessage(1),
+            command=RPL_ENDOFNAMES,
+            params=["nick1", ANYSTR, ANYSTR],
+        )
+
+    @cases.mark_specifications("RFC1459", deprecated=True)
+    def testNamesNoArgumentPrivate1459(self):
+        """
+        "If no <channel> parameter is given, a list of all channels and their
+        occupants is returned.  At the end of this list, a list of users who
+        are visible but either not on any channel or not on a visible channel
+        are listed as being on `channel' "*"."
+        -- https://datatracker.ietf.org/doc/html/rfc1459#section-4.2.5
+        -- https://datatracker.ietf.org/doc/html/rfc2812#section-3.2.5
+        """
+        self._testNamesNoArgumentPrivate(symbol=False)
+
+    @cases.mark_specifications("RFC2812", deprecated=True)
+    def testNamesNoArgumentPrivate2812(self):
+        """
+        "If no <channel> parameter is given, a list of all channels and their
+        occupants is returned.  At the end of this list, a list of users who
+        are visible but either not on any channel or not on a visible channel
+        are listed as being on `channel' "*"."
+        -- https://datatracker.ietf.org/doc/html/rfc1459#section-4.2.5
+        -- https://datatracker.ietf.org/doc/html/rfc2812#section-3.2.5
+        """
+        self._testNamesNoArgumentPrivate(symbol=True)

irctest/server_tests/part.py

@@ -1,3 +1,12 @@
+"""
+The PART command  (`RFC 1459
+<https://datatracker.ietf.org/doc/html/rfc1459#section-6.1>`__,
+`RFC 2812 <https://datatracker.ietf.org/doc/html/rfc2812#section-5.2>`__,
+`Modern <https://modern.ircdocs.horse/#part-message>`__)
+
+TODO: cross-reference Modern
+"""
+
 import time
 
 from irctest import cases

irctest/server_tests/pingpong.py

@@ -1,3 +1,7 @@
+"""
+The PING and PONG commands
+"""
+
 from irctest import cases
 from irctest.numerics import ERR_NEEDMOREPARAMS, ERR_NOORIGIN
 from irctest.patma import ANYSTR

irctest/server_tests/quit.py

@@ -1,3 +1,12 @@
+"""
+The QUITcommand  (`RFC 1459
+<https://datatracker.ietf.org/doc/html/rfc1459#section-4.1.6>`__,
+`RFC 2812 <https://datatracker.ietf.org/doc/html/rfc2812#section-3.2.1>`__,
+`Modern <https://modern.ircdocs.horse/#quit-message>`__)
+
+TODO: cross-reference RFC 1459 and Modern
+"""
+
 import time
 
 from irctest import cases
@@ -7,6 +16,7 @@ from irctest.patma import StrRe
 
 class ChannelQuitTestCase(cases.BaseServerTestCase):
     @cases.mark_specifications("RFC2812")
+    @cases.xfailIfSoftware(["ircu2", "Nefarious", "snircd"], "ircu2 does not echo QUIT")
     def testQuit(self):
         """“Once a user has joined a channel, he receives information about
         all commands his server receives affecting the channel.  This

irctest/server_tests/readq.py

@@ -1,9 +1,12 @@
+"""
+`Ergo <https://ergo.chat/>`_-specific tests of responses to DoS attacks
+using long lines.
+"""
+
 from irctest import cases
 
 
 class ReadqTestCase(cases.BaseServerTestCase):
-    """Test responses to DoS attacks using long lines."""
-
     @cases.mark_specifications("Ergo")
     @cases.mark_capabilities("message-tags")
     def testReadqTags(self):

irctest/server_tests/redaction.py

@@ -0,0 +1,502 @@
+"""
+`IRCv3 draft message redaction <https://github.com/progval/ircv3-specifications/blob/redaction/extensions/message-redaction.md>`_
+"""
+
+import uuid
+
+import pytest
+
+from irctest import cases
+from irctest.patma import ANYDICT, ANYSTR, StrRe
+
+CAPABILITIES = [
+    "message-tags",
+    "echo-message",
+    "batch",
+    "server-time",
+    "labeled-response",
+    "draft/message-redaction",
+]
+
+
+@cases.mark_specifications("IRCv3")
+@cases.mark_capabilities(*CAPABILITIES)
+class ChannelRedactTestCase(cases.BaseServerTestCase):
+    def _setupRedactTest(self, redacteeId, redacteeNick, chathistory=False):
+        capabilities = list(CAPABILITIES)
+        if chathistory:
+            capabilities.extend(["batch", "draft/chathistory"])
+        self.connectClient("chanop", capabilities=capabilities, skip_if_cap_nak=True)
+        self.sendLine(1, "JOIN #chan")
+        self.connectClient("user", capabilities=capabilities, skip_if_cap_nak=True)
+        self.sendLine(2, "JOIN #chan")
+        self.getMessages(2)  # synchronize
+        self.getMessages(1)
+
+        self.sendLine(redacteeId, "@label=1234 PRIVMSG #chan :hello there")
+        echo = self.getMessage(redacteeId)
+        self.assertMessageMatch(
+            echo,
+            tags={"label": "1234", "msgid": StrRe("[^ ]+"), **ANYDICT},
+            prefix=StrRe(redacteeNick + "!.*"),
+            command="PRIVMSG",
+            params=["#chan", "hello there"],
+        )
+        msgid = echo.tags["msgid"]
+
+        self.assertMessageMatch(
+            self.getMessage(3 - redacteeId),
+            tags={"msgid": msgid, **ANYDICT},
+            prefix=StrRe(redacteeNick + "!.*"),
+            command="PRIVMSG",
+            params=["#chan", "hello there"],
+        )
+
+        return msgid
+
+    def testRelayOpSelfRedact(self):
+        """Channel op writes a message and redacts it themselves."""
+        msgid = self._setupRedactTest(redacteeId=1, redacteeNick="chanop")
+
+        self.sendLine(1, f"REDACT #chan {msgid} :oops")
+        self.assertMessageMatch(
+            self.getMessage(1),
+            prefix=StrRe("chanop!.*"),
+            command="REDACT",
+            params=["#chan", msgid, "oops"],
+        )
+
+        self.assertMessageMatch(
+            self.getMessage(2),
+            prefix=StrRe("chanop!.*"),
+            command="REDACT",
+            params=["#chan", msgid, "oops"],
+        )
+
+    def testRelayOpRedact(self):
+        """User writes a message and channel op redacts it."""
+        msgid = self._setupRedactTest(
+            redacteeId=2,
+            redacteeNick="user",
+        )
+
+        self.sendLine(1, f"REDACT #chan {msgid} :spam")
+        self.assertMessageMatch(
+            self.getMessage(1),
+            prefix=StrRe("chanop!.*"),
+            command="REDACT",
+            params=["#chan", msgid, "spam"],
+        )
+
+        self.assertMessageMatch(
+            self.getMessage(2),
+            prefix=StrRe("chanop!.*"),
+            command="REDACT",
+            params=["#chan", msgid, "spam"],
+        )
+
+    def testRelayUserSelfRedact(self):
+        """User writes a message and redacts it themselves.
+
+        Servers may either accept or reject this."""
+        msgid = self._setupRedactTest(redacteeId=2, redacteeNick="user")
+
+        self.sendLine(2, f"REDACT #chan {msgid} :oops")
+
+        msg = self.getMessage(2)
+        if msg.command == "REDACT":
+            self.assertMessageMatch(
+                msg,
+                prefix=StrRe("user!.*"),
+                command="REDACT",
+                params=["#chan", msgid, "oops"],
+            )
+
+            self.assertMessageMatch(
+                self.getMessage(1),
+                prefix=StrRe("user!.*"),
+                command="REDACT",
+                params=["#chan", msgid, "oops"],
+            )
+        else:
+            self.assertMessageMatch(
+                msg,
+                command="FAIL",
+                params=["REDACT", "REDACT_FORBIDDEN", "#chan", msgid, ANYSTR],
+            )
+
+            self.assertEqual(self.getMessages(1), [])
+
+    def testRejectRedactOtherUser(self):
+        """Channel op writes a message and a user attempts to redact it."""
+        msgid = self._setupRedactTest(redacteeId=1, redacteeNick="chanop")
+
+        self.sendLine(2, f"REDACT #chan {msgid} :oops")
+        self.assertMessageMatch(
+            self.getMessage(2),
+            command="FAIL",
+            params=["REDACT", "REDACT_FORBIDDEN", "#chan", msgid, ANYSTR],
+        )
+
+        self.assertEqual(self.getMessages(1), [])
+
+    @pytest.mark.parametrize(
+        "chathistory_requester",
+        [
+            pytest.param(1, id="chathistory-to-chanop"),
+            pytest.param(2, id="chathistory-to-user"),
+        ],
+    )
+    def testOpSelfRedactChathistory(self, chathistory_requester):
+        """Channel op writes a message and redacts it themselves; both the op
+        and a regular user check the chathistory afterward.
+
+        https://github.com/progval/ircv3-specifications/blob/redaction/extensions/message-redaction.md#chat-history
+        """
+        msgid = self._setupRedactTest(
+            redacteeId=1, redacteeNick="chanop", chathistory=True
+        )
+
+        self.sendLine(1, f"REDACT #chan {msgid} :oops")
+        self.assertMessageMatch(
+            self.getMessage(1),
+            prefix=StrRe("chanop!.*"),
+            command="REDACT",
+            params=["#chan", msgid, "oops"],
+        )
+
+        self.getMessages(1)
+        self.getMessages(2)
+
+        self.sendLine(chathistory_requester, "CHATHISTORY LATEST #chan * 10")
+
+        (start_msg, *msgs, end_msg) = self.getMessages(chathistory_requester)
+        self.assertMessageMatch(
+            start_msg,
+            command="BATCH",
+            params=[StrRe(r"\+.+"), "chathistory", "#chan"],
+        )
+        batch_tag = start_msg.params[0][1:]
+
+        # remove Ergo's event-playback fallback
+        msgs = [msg for msg in msgs if not msg.prefix.startswith("HistServ!")]
+
+        self.assertMessageMatch(end_msg, command="BATCH", params=["-" + batch_tag])
+
+        if len(msgs) == 0:
+            pass  # Server removed the message entirely
+        elif len(msgs) == 1:
+            # Server replaced with the REDACT
+            self.assertMessageMatch(
+                msgs[0],
+                prefix=StrRe("sender!.*"),
+                command="REDACT",
+                params=["#chan", msgid, "oops"],
+            )
+        elif len(msgs) == 2:
+            # Server appended the REDACT
+            self.assertMessageMatch(
+                msgs[0],
+                tags={"msgid": msgid, **ANYDICT},
+                command="PRIVMSG",
+                params=["#chan", msgid, "hello there"],
+            )
+            self.assertMessageMatch(
+                msgs[1],
+                prefix=StrRe("sender!.*"),
+                command="REDACT",
+                params=["#chan", msgid, "oops"],
+            )
+        else:
+            self.assertTrue(False, fail_msg=f"Unexpectedly many messages: {msgs}")
+
+    def testOpRedactNonExistant(self):
+        """Channel op writes a message and redacts a random non-existant id."""
+        self._setupRedactTest(redacteeId=1, redacteeNick="chanop")
+
+        nonexistent_msgid = str(uuid.uuid4())
+
+        self.sendLine(1, f"REDACT #chan {nonexistent_msgid} :oops")
+        self.assertMessageMatch(
+            self.getMessage(1),
+            command="FAIL",
+            params=["REDACT", "UNKNOWN_MSGID", "#chan", nonexistent_msgid, ANYSTR],
+        )
+
+        self.assertEqual(self.getMessages(2), [])
+
+    def testOpRedactWrongChan(self):
+        """Channel op writes a message and redacts it, but uses the wrong channel
+        as target."""
+        msgid = self._setupRedactTest(redacteeId=1, redacteeNick="chanop")
+
+        self.sendLine(1, "JOIN #otherChan")
+        self.getMessages(1)
+
+        self.sendLine(1, f"REDACT #otherChan {msgid} :oops")
+
+        msg = self.getMessage(1)
+
+        self.assertMessageMatch(
+            msg,
+            command="FAIL",
+        )
+        if msg.params[1] == "UNKNOWN_MSGID":
+            self.assertMessageMatch(
+                msg,
+                command="FAIL",
+                params=["REDACT", "UNKNOWN_MSGID", "#otherChan", msgid, ANYSTR],
+            )
+        else:
+            self.assertMessageMatch(
+                msg,
+                command="FAIL",
+                params=["REDACT", "REDACT_FORBIDDEN", "#otherChan", ANYSTR],
+            )
+
+        self.assertEqual(self.getMessages(2), [])
+
+
+@cases.mark_specifications("IRCv3")
+@cases.mark_capabilities(*CAPABILITIES)
+@cases.mark_services
+@pytest.mark.private_chathistory
+class PmRedactTestCase(cases.BaseServerTestCase):
+    """Tests REDACT command in private messages between authenticated accounts"""
+
+    def _setupRedactTest(self, chathistory=False):
+        capabilities = [*CAPABILITIES, "sasl"]
+        if chathistory:
+            capabilities.extend(["batch", "draft/chathistory"])
+        self.controller.registerUser(self, "sender", "senderpass")
+        self.controller.registerUser(self, "recipient", "recipientpass")
+        self.connectClient(
+            "sender",
+            password="senderpass",
+            capabilities=capabilities,
+            skip_if_cap_nak=True,
+        )
+        self.connectClient(
+            "recipient",
+            password="recipientpass",
+            capabilities=capabilities,
+            skip_if_cap_nak=True,
+        )
+        self.getMessages(2)  # synchronize
+        self.getMessages(1)
+
+        self.sendLine(1, "@label=1234 PRIVMSG recipient :hello there")
+        echo = self.getMessage(1)
+        self.assertMessageMatch(
+            echo,
+            tags={"label": "1234", "msgid": StrRe("[^ ]+"), **ANYDICT},
+            prefix=StrRe("sender!.*"),
+            command="PRIVMSG",
+            params=["recipient", "hello there"],
+        )
+        msgid = echo.tags["msgid"]
+
+        self.assertMessageMatch(
+            self.getMessage(2),
+            tags={"msgid": msgid, **ANYDICT},
+            prefix=StrRe("sender!.*"),
+            command="PRIVMSG",
+            params=["recipient", "hello there"],
+        )
+
+        return msgid
+
+    def testRelaySenderRedact(self):
+        """Someone writes a message in private and redacts it themselves."""
+        msgid = self._setupRedactTest()
+
+        self.sendLine(1, f"REDACT recipient {msgid} :oops")
+        self.assertMessageMatch(
+            self.getMessage(1),
+            prefix=StrRe("sender!.*"),
+            command="REDACT",
+            params=["recipient", msgid, "oops"],
+        )
+
+        self.assertMessageMatch(
+            self.getMessage(2),
+            prefix=StrRe("sender!.*"),
+            command="REDACT",
+            params=["recipient", msgid, "oops"],
+        )
+
+    def testRelayRecipientRedact(self):
+        """Someone writes a message in private and their recipient redacts it.
+
+        Servers may either accept or reject this."""
+        msgid = self._setupRedactTest()
+
+        self.sendLine(2, f"REDACT sender {msgid} :oops")
+
+        msg = self.getMessage(2)
+        if msg.command == "REDACT":
+            self.assertMessageMatch(
+                msg,
+                prefix=StrRe("recipient!.*"),
+                command="REDACT",
+                params=["sender", msgid, "oops"],
+            )
+
+            self.assertMessageMatch(
+                self.getMessage(1),
+                prefix=StrRe("user!.*"),
+                command="REDACT",
+                params=["sender", msgid, "oops"],
+            )
+        else:
+            self.assertMessageMatch(
+                msg,
+                command="FAIL",
+                params=[
+                    "REDACT",
+                    StrRe("(REDACT_FORBIDDEN|UNKNOWN_MSGID)"),
+                    "sender",
+                    msgid,
+                    ANYSTR,
+                ],
+            )
+
+            self.assertEqual(self.getMessages(1), [])
+
+    @pytest.mark.parametrize("nick", ["sender", "recipient"])
+    def testRejectRedactOtherUser(self, nick):
+        """Someone writes a message in private to someone else and an unrelated person
+        attempts to redact it."""
+        msgid = self._setupRedactTest()
+
+        self.controller.registerUser(self, "censor", "censorpass")
+        self.connectClient(
+            "censor",
+            password="censorpass",
+            capabilities=[*CAPABILITIES, "sasl"],
+            skip_if_cap_nak=True,
+        )
+        self.getMessages(3)  # synchronize
+
+        self.sendLine(3, f"REDACT {nick} {msgid} :oops")
+        self.assertMessageMatch(
+            self.getMessage(3),
+            command="FAIL",
+            params=[
+                "REDACT",
+                StrRe("(REDACT_FORBIDDEN|UNKNOWN_MSGID)"),
+                nick,
+                msgid,
+                ANYSTR,
+            ],
+        )
+
+        self.assertEqual(self.getMessages(1), [])
+        self.assertEqual(self.getMessages(2), [])
+
+    @pytest.mark.parametrize(
+        "chathistory_requester",
+        [
+            pytest.param(1, id="chathistory-to-sender"),
+            pytest.param(2, id="chathistory-to-recipient"),
+        ],
+    )
+    @pytest.mark.private_chathistory
+    def testSenderRedactChathistory(self, chathistory_requester):
+        """Channel op writes a message and redacts it themselves; both the op
+        and a regular user check the chathistory afterward.
+
+        https://github.com/progval/ircv3-specifications/blob/redaction/extensions/message-redaction.md#chat-history
+        """
+        msgid = self._setupRedactTest(chathistory=True)
+
+        self.sendLine(1, f"REDACT recipient {msgid} :oops")
+        self.assertMessageMatch(
+            self.getMessage(1),
+            prefix=StrRe("sender!.*"),
+            command="REDACT",
+            params=["recipient", msgid, "oops"],
+        )
+
+        self.getMessages(1)
+        self.getMessages(2)
+
+        if chathistory_requester == 1:
+            others_nick = "recipient"
+        else:
+            others_nick = "sender"
+
+        self.sendLine(chathistory_requester, f"CHATHISTORY LATEST {others_nick} * 10")
+
+        (start_msg, *msgs, end_msg) = self.getMessages(chathistory_requester)
+        self.assertMessageMatch(
+            start_msg,
+            command="BATCH",
+            params=[StrRe(r"\+.+"), "chathistory", others_nick],
+        )
+        batch_tag = start_msg.params[0][1:]
+
+        # remove Ergo's event-playback fallback
+        msgs = [msg for msg in msgs if not msg.prefix.startswith("HistServ!")]
+
+        self.assertMessageMatch(end_msg, command="BATCH", params=["-" + batch_tag])
+
+        if len(msgs) == 0:
+            pass  # Server removed the message entirely
+        elif len(msgs) == 1:
+            # Server replaced with the REDACT
+            self.assertMessageMatch(
+                msgs[0],
+                prefix=StrRe("sender!.*"),
+                command="REDACT",
+                params=["recipient", msgid, "oops"],
+            )
+        elif len(msgs) == 2:
+            # Server appended the REDACT
+            self.assertMessageMatch(
+                msgs[0],
+                tags={"msgid": msgid, **ANYDICT},
+                command="PRIVMSG",
+                params=["recipient", msgid, "hello there"],
+            )
+            self.assertMessageMatch(
+                msgs[1],
+                prefix=StrRe("sender!.*"),
+                command="REDACT",
+                params=["recipient", msgid, "oops"],
+            )
+        else:
+            self.assertTrue(False, fail_msg=f"Unexpectedly many messages: {msgs}")
+
+    def testRedactNonExistant(self):
+        """Someone writes a message in private to someone else and redacts a random
+        non-existant id."""
+        self._setupRedactTest()
+
+        nonexistent_msgid = str(uuid.uuid4())
+
+        self.sendLine(1, f"REDACT recipient {nonexistent_msgid} :oops")
+        self.assertMessageMatch(
+            self.getMessage(1),
+            command="FAIL",
+            params=["REDACT", "UNKNOWN_MSGID", "recipient", nonexistent_msgid, ANYSTR],
+        )
+
+        self.assertEqual(self.getMessages(2), [])
+
+    def testOpRedactWrongChan(self):
+        """Channel op writes a message and redacts it, but uses the wrong channel
+        as target."""
+        msgid = self._setupRedactTest()
+
+        self.sendLine(1, "JOIN #otherChan")
+        self.getMessages(1)
+
+        self.sendLine(1, f"REDACT #otherChan {msgid} :oops")
+        self.assertMessageMatch(
+            self.getMessage(1),
+            command="FAIL",
+            params=["REDACT", "UNKNOWN_MSGID", "#otherChan", msgid, ANYSTR],
+        )
+
+        self.assertEqual(self.getMessages(2), [])

irctest/server_tests/regressions.py

@@ -1,11 +1,14 @@
 """
-Regression tests for bugs in oragono.
+Regression tests for bugs in `Ergo <https://ergo.chat/>`_.
 """
 
-import time
-
-from irctest import cases
-from irctest.numerics import ERR_ERRONEUSNICKNAME, ERR_NICKNAMEINUSE, RPL_WELCOME
+from irctest import cases, runner
+from irctest.numerics import (
+    ERR_ERRONEUSNICKNAME,
+    ERR_NICKNAMEINUSE,
+    RPL_HELLO,
+    RPL_WELCOME,
+)
 from irctest.patma import ANYDICT
 
 
@@ -57,6 +60,12 @@ class RegressionsTestCase(cases.BaseServerTestCase):
 
     @cases.mark_capabilities("message-tags", "batch", "echo-message", "server-time")
     def testTagCap(self):
+        if self.controller.software_name == "UnrealIRCd":
+            raise runner.ImplementationChoice(
+                "Arbitrary +draft/reply values (TODO: adapt this test to use real "
+                "values so their pass Unreal's validation) "
+                "https://bugs.unrealircd.org/view.php?id=5948"
+            )
         # regression test for oragono #754
         self.connectClient(
             "alice",
@@ -99,13 +108,13 @@ class RegressionsTestCase(cases.BaseServerTestCase):
         )
 
     @cases.mark_specifications("RFC1459")
+    @cases.xfailIfSoftware(["ngIRCd"], "wat")
     def testStarNick(self):
         self.addClient(1)
         self.sendLine(1, "NICK *")
         self.sendLine(1, "USER u s e r")
         replies = {"NOTICE"}
-        time.sleep(2)  # give time to slow servers, like irc2 to reply
-        while replies == {"NOTICE"}:
+        while replies <= {"NOTICE", RPL_HELLO}:
             replies = set(msg.command for msg in self.getMessages(1, synchronize=False))
         self.assertIn(ERR_ERRONEUSNICKNAME, replies)
         self.assertNotIn(RPL_WELCOME, replies)

irctest/server_tests/relaymsg.py

@@ -1,3 +1,7 @@
+"""
+RELAYMSG command of `Ergo <https://ergo.chat/>`_
+"""
+
 from irctest import cases
 from irctest.irc_utils.junkdrawer import random_name
 from irctest.patma import ANYSTR

irctest/server_tests/roleplay.py

@@ -1,3 +1,7 @@
+"""
+Roleplay features of `Ergo <https://ergo.chat/>`_
+"""
+
 from irctest import cases
 from irctest.irc_utils.junkdrawer import random_name
 from irctest.numerics import ERR_CANNOTSENDRP

irctest/server_tests/sasl.py

@@ -12,9 +12,9 @@ class RegistrationTestCase(cases.BaseServerTestCase):
 
 
 @cases.mark_services
-class SaslTestCase(cases.BaseServerTestCase, cases.OptionalityHelper):
+class SaslTestCase(cases.BaseServerTestCase):
     @cases.mark_specifications("IRCv3")
-    @cases.OptionalityHelper.skipUnlessHasMechanism("PLAIN")
+    @cases.skipUnlessHasMechanism("PLAIN")
     def testPlain(self):
         """PLAIN authentication with correct username/password."""
         self.controller.registerUser(self, "foo", "sesame")
@@ -54,7 +54,7 @@ class SaslTestCase(cases.BaseServerTestCase, cases.OptionalityHelper):
         )
 
     @cases.mark_specifications("IRCv3")
-    @cases.OptionalityHelper.skipUnlessHasMechanism("PLAIN")
+    @cases.skipUnlessHasMechanism("PLAIN")
     def testPlainNonAscii(self):
         password = "é" * 100
         authstring = base64.b64encode(
@@ -82,7 +82,7 @@ class SaslTestCase(cases.BaseServerTestCase, cases.OptionalityHelper):
         )
 
     @cases.mark_specifications("IRCv3")
-    @cases.OptionalityHelper.skipUnlessHasMechanism("PLAIN")
+    @cases.skipUnlessHasMechanism("PLAIN")
     def testPlainNoAuthzid(self):
         """“message   = [authzid] UTF8NUL authcid UTF8NUL passwd
 
@@ -170,7 +170,22 @@ class SaslTestCase(cases.BaseServerTestCase, cases.OptionalityHelper):
         )
 
     @cases.mark_specifications("IRCv3")
-    @cases.OptionalityHelper.skipUnlessHasMechanism("PLAIN")
+    @cases.skipUnlessHasMechanism("PLAIN")
+    @cases.xfailIf(
+        lambda self: (
+            self.controller.services_controller is not None
+            and self.controller.services_controller.software_name == "Anope"
+        ),
+        "Anope does not handle split AUTHENTICATE (reported on IRC)",
+    )
+    @cases.xfailIf(
+        lambda self: (
+            self.controller.services_controller is not None
+            and self.controller.services_controller.software_name == "Dlk-Services"
+        ),
+        "Dlk does not handle split AUTHENTICATE "
+        "https://github.com/DalekIRC/Dalek-Services/issues/28",
+    )
     def testPlainLarge(self):
         """Test the client splits large AUTHENTICATE messages whose payload
         is not a multiple of 400.
@@ -232,7 +247,14 @@ class SaslTestCase(cases.BaseServerTestCase, cases.OptionalityHelper):
     # message's length too big for it to be valid.
 
     @cases.mark_specifications("IRCv3")
-    @cases.OptionalityHelper.skipUnlessHasMechanism("PLAIN")
+    @cases.skipUnlessHasMechanism("PLAIN")
+    @cases.xfailIf(
+        lambda self: (
+            self.controller.services_controller is not None
+            and self.controller.services_controller.software_name == "Anope"
+        ),
+        "Anope does not handle split AUTHENTICATE (reported on IRC)",
+    )
     def testPlainLargeEquals400(self):
         """Test the client splits large AUTHENTICATE messages whose payload
         is not a multiple of 400.
@@ -277,7 +299,7 @@ class SaslTestCase(cases.BaseServerTestCase, cases.OptionalityHelper):
     # message's length too big for it to be valid.
 
     @cases.mark_specifications("IRCv3")
-    @cases.OptionalityHelper.skipUnlessHasMechanism("SCRAM-SHA-256")
+    @cases.skipUnlessHasMechanism("SCRAM-SHA-256")
     def testScramSha256Success(self):
         self.controller.registerUser(self, "Scramtest", "sesame")
 
@@ -333,7 +355,7 @@ class SaslTestCase(cases.BaseServerTestCase, cases.OptionalityHelper):
         self.confirmSuccessfulAuth()
 
     @cases.mark_specifications("IRCv3")
-    @cases.OptionalityHelper.skipUnlessHasMechanism("SCRAM-SHA-256")
+    @cases.skipUnlessHasMechanism("SCRAM-SHA-256")
     def testScramSha256Failure(self):
         self.controller.registerUser(self, "Scramtest", "sesame")
 

irctest/server_tests/statusmsg.py

@@ -1,3 +1,10 @@
+"""
+STATUSMSG ISUPPORT token and related PRIVMSG (`Modern
+<https://modern.ircdocs.horse/#statusmsg-parameter>`__)
+
+TODO: cross-reference Modern
+"""
+
 from irctest import cases, runner
 from irctest.numerics import RPL_NAMREPLY
 
@@ -10,6 +17,11 @@ class StatusmsgTestCase(cases.BaseServerTestCase):
         self.assertEqual(self.server_support["STATUSMSG"], "~&@%+")
 
     @cases.mark_isupport("STATUSMSG")
+    @cases.xfailIfSoftware(
+        ["ircu2", "Nefarious", "snircd"],
+        "STATUSMSG is present in ISUPPORT, but it not actually supported as PRIVMSG "
+        "target (only for WALLCOPS/WALLCHOPS/...)",
+    )
     def testStatusmsgFromOp(self):
         """Test that STATUSMSG are sent to the intended recipients,
         with the intended prefixes."""
@@ -61,6 +73,11 @@ class StatusmsgTestCase(cases.BaseServerTestCase):
         self.assertEqual(len(unprivilegedMessages), 0)
 
     @cases.mark_isupport("STATUSMSG")
+    @cases.xfailIfSoftware(
+        ["ircu2", "Nefarious", "snircd"],
+        "STATUSMSG is present in ISUPPORT, but it not actually supported as PRIVMSG "
+        "target (only for WALLCOPS/WALLCHOPS/...)",
+    )
     def testStatusmsgFromRegular(self):
         """Test that STATUSMSG are sent to the intended recipients,
         with the intended prefixes."""

irctest/server_tests/time.py

@@ -0,0 +1,48 @@
+import math
+import time
+
+from irctest import cases
+from irctest.numerics import RPL_TIME
+from irctest.patma import ANYSTR, StrRe
+
+
+class TimeTestCase(cases.BaseServerTestCase):
+    def testTime(self):
+        self.connectClient("user")
+
+        time_before = math.floor(time.time())
+        self.sendLine(1, "TIME")
+
+        msg = self.getMessage(1)
+
+        time_after = math.ceil(time.time())
+
+        if len(msg.params) == 5:
+            # ircu2, snircd
+            self.assertMessageMatch(
+                msg,
+                command=RPL_TIME,
+                params=["user", "My.Little.Server", StrRe("[0-9]+"), "0", ANYSTR],
+            )
+            self.assertIn(
+                int(msg.params[2]),
+                range(time_before, time_after + 1),
+                "Timestamp not in expected range",
+            )
+        elif len(msg.params) == 4:
+            # bahamut
+            self.assertMessageMatch(
+                msg,
+                command=RPL_TIME,
+                params=["user", "My.Little.Server", StrRe("[0-9]+"), ANYSTR],
+            )
+            self.assertIn(
+                int(msg.params[2]),
+                range(time_before, time_after + 1),
+                "Timestamp not in expected range",
+            )
+        else:
+            # Common case
+            self.assertMessageMatch(
+                msg, command=RPL_TIME, params=["user", "My.Little.Server", ANYSTR]
+            )

irctest/server_tests/topic.py

@@ -1,3 +1,10 @@
+"""
+The TOPIC command  (`RFC 1459
+<https://datatracker.ietf.org/doc/html/rfc1459#section-4.2.1>`__,
+`RFC 2812 <https://datatracker.ietf.org/doc/html/rfc2812#section-3.2.1>`__,
+`Modern <https://modern.ircdocs.horse/#topic-message>`__)
+"""
+
 from irctest import cases, client_mock, runner
 from irctest.numerics import ERR_CHANOPRIVSNEEDED, RPL_NOTOPIC, RPL_TOPIC, RPL_TOPICTIME
 

irctest/server_tests/umodes/registeredonly.py

@@ -0,0 +1,124 @@
+"""
+Test the registered-only DM user mode (commonly +R).
+"""
+
+from irctest import cases
+from irctest.numerics import ERR_NEEDREGGEDNICK
+
+
+@cases.mark_services
+class RegisteredOnlyUmodeTestCase(cases.BaseServerTestCase):
+    @cases.mark_specifications("Ergo")
+    def testRegisteredOnlyUserMode(self):
+        """Test the +R registered-only mode."""
+        self.controller.registerUser(self, "evan", "sesame")
+        self.controller.registerUser(self, "carmen", "pink")
+
+        self.connectClient(
+            "evan",
+            name="evan",
+            account="evan",
+            password="sesame",
+            capabilities=["sasl"],
+        )
+        self.connectClient("shivaram", name="shivaram")
+        self.sendLine("evan", "MODE evan +R")
+        self.assertMessageMatch(
+            self.getMessage("evan"), command="MODE", params=["evan", "+R"]
+        )
+
+        # this DM should be blocked by +R registered-only
+        self.getMessages("shivaram")
+        self.sendLine("shivaram", "PRIVMSG evan :hey there")
+        self.assertMessageMatch(
+            self.getMessage("shivaram"),
+            command=ERR_NEEDREGGEDNICK,
+        )
+        self.assertEqual(self.getMessages("evan"), [])
+
+        self.connectClient(
+            "carmen",
+            name="carmen",
+            account="carmen",
+            password="pink",
+            capabilities=["sasl"],
+        )
+        self.getMessages("evan")
+        self.sendLine("carmen", "PRIVMSG evan :hey there")
+        self.assertEqual(self.getMessages("carmen"), [])
+        # this message should go through fine:
+        self.assertMessageMatch(
+            self.getMessage("evan"),
+            command="PRIVMSG",
+            params=["evan", "hey there"],
+        )
+
+    @cases.mark_specifications("Ergo")
+    def testRegisteredOnlyUserModeAcceptCommand(self):
+        """Test that the ACCEPT command can authorize another user
+        to send the accept-er direct messages, overriding the
+        +R registered-only mode."""
+        self.controller.registerUser(self, "evan", "sesame")
+        self.connectClient(
+            "evan",
+            name="evan",
+            account="evan",
+            password="sesame",
+            capabilities=["sasl"],
+        )
+        self.connectClient("shivaram", name="shivaram")
+        self.sendLine("evan", "MODE evan +R")
+        self.assertMessageMatch(
+            self.getMessage("evan"), command="MODE", params=["evan", "+R"]
+        )
+        self.sendLine("evan", "ACCEPT shivaram")
+        self.getMessages("evan")
+
+        self.sendLine("shivaram", "PRIVMSG evan :hey there")
+        self.assertEqual(self.getMessages("shivaram"), [])
+        self.assertMessageMatch(
+            self.getMessage("evan"),
+            command="PRIVMSG",
+            params=["evan", "hey there"],
+        )
+
+        self.sendLine("evan", "ACCEPT -shivaram")
+        self.getMessages("evan")
+        self.sendLine("shivaram", "PRIVMSG evan :how's it going")
+        self.assertMessageMatch(
+            self.getMessage("shivaram"),
+            command=ERR_NEEDREGGEDNICK,
+        )
+        self.assertEqual(self.getMessages("evan"), [])
+
+    @cases.mark_specifications("Ergo")
+    def testRegisteredOnlyUserModeAutoAcceptOnDM(self):
+        """Test that sending someone a DM automatically authorizes them to
+        reply, overriding the +R registered-only mode."""
+        self.controller.registerUser(self, "evan", "sesame")
+        self.connectClient(
+            "evan",
+            name="evan",
+            account="evan",
+            password="sesame",
+            capabilities=["sasl"],
+        )
+        self.connectClient("shivaram", name="shivaram")
+        self.sendLine("evan", "MODE evan +R")
+        self.assertMessageMatch(
+            self.getMessage("evan"), command="MODE", params=["evan", "+R"]
+        )
+        self.sendLine("evan", "PRIVMSG shivaram :hey there")
+        self.getMessages("evan")
+        self.assertMessageMatch(
+            self.getMessage("shivaram"),
+            command="PRIVMSG",
+            params=["shivaram", "hey there"],
+        )
+        self.sendLine("shivaram", "PRIVMSG evan :how's it going")
+        self.assertEqual(self.getMessages("shivaram"), [])
+        self.assertMessageMatch(
+            self.getMessage("evan"),
+            command="PRIVMSG",
+            params=["evan", "how's it going"],
+        )

irctest/server_tests/utf8.py

@@ -1,29 +1,21 @@
-from irctest import cases
+"""
+`Ergo <https://ergo.chat/>`_-specific tests of non-Unicode filtering
+
+<https://ircv3.net/specs/extensions/utf8-only>`_
+"""
+
+from irctest import cases, runner
 from irctest.patma import ANYSTR
 
 
-class Utf8TestCase(cases.BaseServerTestCase, cases.OptionalityHelper):
+class Utf8TestCase(cases.BaseServerTestCase):
     @cases.mark_specifications("Ergo")
-    def testUtf8Validation(self):
+    def testNonUtf8Filtering(self):
         self.connectClient(
             "bar",
             capabilities=["batch", "echo-message", "labeled-response"],
         )
         self.joinChannel(1, "#qux")
-        self.sendLine(1, "PRIVMSG #qux hi")
-        ms = self.getMessages(1)
-        self.assertMessageMatch(
-            [m for m in ms if m.command == "PRIVMSG"][0], params=["#qux", "hi"]
-        )
-
-        self.sendLine(1, b"PRIVMSG #qux hi\xaa")
-        self.assertMessageMatch(
-            self.getMessage(1),
-            command="FAIL",
-            params=["PRIVMSG", "INVALID_UTF8", ANYSTR],
-            tags={},
-        )
-
         self.sendLine(1, b"@label=xyz PRIVMSG #qux hi\xaa")
         self.assertMessageMatch(
             self.getMessage(1),
@@ -31,3 +23,26 @@ class Utf8TestCase(cases.BaseServerTestCase, cases.OptionalityHelper):
             params=["PRIVMSG", "INVALID_UTF8", ANYSTR],
             tags={"label": "xyz"},
         )
+
+    @cases.mark_isupport("UTF8ONLY")
+    def testUtf8Validation(self):
+        self.connectClient("foo")
+        self.connectClient("bar")
+
+        if "UTF8ONLY" not in self.server_support:
+            raise runner.IsupportTokenNotSupported("UTF8ONLY")
+
+        self.sendLine(1, "PRIVMSG bar hi")
+        self.getMessages(1)  # synchronize
+        ms = self.getMessages(2)
+        self.assertMessageMatch(
+            [m for m in ms if m.command == "PRIVMSG"][0], params=["bar", "hi"]
+        )
+
+        self.sendLine(1, b"PRIVMSG bar hi\xaa")
+
+        m = self.getMessage(1)
+        assert m.command in ("FAIL", "WARN", "ERROR")
+
+        if m.command in ("FAIL", "WARN"):
+            self.assertMessageMatch(m, params=["PRIVMSG", "INVALID_UTF8", ANYSTR])

irctest/server_tests/wallops.py

@@ -1,3 +1,9 @@
+"""
+The WALLOPS command  (`RFC 2812
+<https://datatracker.ietf.org/doc/html/rfc2812#section-3.7>`__,
+`Modern <https://modern.ircdocs.horse/#wallops-message>`__)
+"""
+
 from irctest import cases, runner
 from irctest.numerics import ERR_NOPRIVILEGES, ERR_UNKNOWNCOMMAND, RPL_YOUREOPER
 from irctest.patma import ANYSTR, StrRe
@@ -38,7 +44,7 @@ class WallopsTestCase(cases.BaseServerTestCase):
 
         messages = self.getMessages(1)
         if ERR_UNKNOWNCOMMAND in (message.command for message in messages):
-            raise runner.NotImplementedByController("WALLOPS")
+            raise runner.OptionalCommandNotSupported("WALLOPS")
         for message in messages:
             self.assertMessageMatch(
                 message,
@@ -60,6 +66,9 @@ class WallopsTestCase(cases.BaseServerTestCase):
         )
 
     @cases.mark_specifications("Modern")
+    @cases.xfailIfSoftware(
+        ["irc2"], "irc2 ignores the command instead of replying ERR_UNKNOWNCOMMAND"
+    )
     def testWallopsPrivileges(self):
         """
         https://github.com/ircdocs/modern-irc/pull/118
@@ -68,7 +77,7 @@ class WallopsTestCase(cases.BaseServerTestCase):
         self.sendLine(1, "WALLOPS :hi everyone")
         message = self.getMessage(1)
         if message.command == ERR_UNKNOWNCOMMAND:
-            raise runner.NotImplementedByController("WALLOPS")
+            raise runner.OptionalCommandNotSupported("WALLOPS")
         self.assertMessageMatch(
             message, command=ERR_NOPRIVILEGES, params=["nick1", ANYSTR]
         )

irctest/server_tests/who.py

@@ -0,0 +1,536 @@
+"""
+The WHO command  (`Modern <https://modern.ircdocs.horse/#who-message>`__)
+and `IRCv3 WHOX <https://ircv3.net/specs/extensions/whox>`_
+
+TODO: cross-reference RFC 1459 and RFC 2812
+"""
+
+import re
+
+import pytest
+
+from irctest import cases, runner
+from irctest.numerics import RPL_ENDOFWHO, RPL_WHOREPLY, RPL_WHOSPCRPL, RPL_YOUREOPER
+from irctest.patma import ANYSTR, InsensitiveStr, StrRe
+
+
+def realname_regexp(realname):
+    return (
+        "[0-9]+ "  # is 0 for every IRCd I can find, except ircu2 (which returns 3)
+        + "(0042 )?"  # for irc2...
+        + re.escape(realname)
+    )
+
+
+class BaseWhoTestCase:
+    def _init(self, auth=False):
+        self.nick = "coolNick"
+        self.username = "myusernam"  # may be truncated if longer than this
+        self.realname = "My UniqueReal Name"
+
+        self.addClient()
+        if auth:
+            self.controller.registerUser(self, "coolAcct", "sesame")
+            self.requestCapabilities(1, ["sasl"], skip_if_cap_nak=True)
+            self.authenticateClient(1, "coolAcct", "sesame")
+        self.sendLine(1, f"NICK {self.nick}")
+        self.sendLine(1, f"USER {self.username} 0 * :{self.realname}")
+        if auth:
+            self.sendLine(1, "CAP END")
+        self.skipToWelcome(1)
+        self.getMessages(1)
+        self.sendLine(1, "JOIN #chan")
+
+        self.getMessages(1)
+
+        self.connectClient("otherNick")
+        self.getMessages(2)
+        self.sendLine(2, "JOIN #chan")
+        self.getMessages(2)
+
+    def _checkReply(self, reply, flags):
+        host_re = "[0-9A-Za-z_:.-]+"
+        if reply.params[1] == "*":
+            # Unreal, ...
+            self.assertMessageMatch(
+                reply,
+                command=RPL_WHOREPLY,
+                params=[
+                    "otherNick",
+                    "*",  # no chan
+                    StrRe("~?" + self.username),
+                    StrRe(host_re),
+                    "My.Little.Server",
+                    "coolNick",
+                    flags,
+                    StrRe(realname_regexp(self.realname)),
+                ],
+            )
+        else:
+            # Solanum, Insp, ...
+            self.assertMessageMatch(
+                reply,
+                command=RPL_WHOREPLY,
+                params=[
+                    "otherNick",
+                    "#chan",
+                    StrRe("~?" + self.username),
+                    StrRe(host_re),
+                    "My.Little.Server",
+                    "coolNick",
+                    flags + "@",
+                    StrRe(realname_regexp(self.realname)),
+                ],
+            )
+
+
+class WhoTestCase(BaseWhoTestCase, cases.BaseServerTestCase):
+    @cases.mark_specifications("Modern")
+    def testWhoStar(self):
+        if self.controller.software_name == "Bahamut":
+            raise runner.OptionalExtensionNotSupported("WHO mask")
+
+        self._init()
+
+        self.sendLine(2, "WHO *")
+        messages = self.getMessages(2)
+
+        self.assertEqual(len(messages), 3, "Unexpected number of messages")
+
+        (*replies, end) = messages
+
+        # Get them in deterministic order
+        replies.sort(key=lambda msg: msg.params[5])
+
+        self._checkReply(replies[0], "H")
+
+        # " `<mask>` MUST be exactly the `<mask>` parameter sent by the client
+        # in its `WHO` message. This means the case MUST be preserved."
+        # -- https://github.com/ircdocs/modern-irc/pull/138/files
+        self.assertMessageMatch(
+            end,
+            command=RPL_ENDOFWHO,
+            params=["otherNick", "*", ANYSTR],
+        )
+
+    @pytest.mark.parametrize(
+        "mask", ["coolNick", "coolnick", "coolni*"], ids=["exact", "casefolded", "mask"]
+    )
+    @cases.mark_specifications("Modern")
+    def testWhoNick(self, mask):
+        if "*" in mask and self.controller.software_name == "Bahamut":
+            raise runner.OptionalExtensionNotSupported("WHO mask")
+
+        self._init()
+
+        self.sendLine(2, f"WHO {mask}")
+        messages = self.getMessages(2)
+
+        self.assertEqual(len(messages), 2, "Unexpected number of messages")
+
+        (reply, end) = messages
+
+        self._checkReply(reply, "H")
+
+        # " `<mask>` MUST be exactly the `<mask>` parameter sent by the client
+        # in its `WHO` message. This means the case MUST be preserved."
+        # -- https://github.com/ircdocs/modern-irc/pull/138/files
+        self.assertMessageMatch(
+            end,
+            command=RPL_ENDOFWHO,
+            params=["otherNick", InsensitiveStr(mask), ANYSTR],
+        )
+
+    @pytest.mark.skip("Not consistently implemented")
+    @pytest.mark.parametrize(
+        "mask",
+        ["*usernam", "*UniqueReal*", "127.0.0.1"],
+        ids=["username", "realname-mask", "hostname"],
+    )
+    def testWhoUsernameRealName(self, mask):
+        if "*" in mask and self.controller.software_name == "Bahamut":
+            raise runner.OptionalExtensionNotSupported("WHO mask")
+
+        self._init()
+
+        self.sendLine(2, f"WHO :{mask}")
+        messages = self.getMessages(2)
+
+        self.assertEqual(len(messages), 2, "Unexpected number of messages")
+
+        (reply, end) = messages
+
+        self._checkReply(reply, "H")
+
+        # " `<mask>` MUST be exactly the `<mask>` parameter sent by the client
+        # in its `WHO` message. This means the case MUST be preserved."
+        # -- https://github.com/ircdocs/modern-irc/pull/138/files
+        self.assertMessageMatch(
+            end,
+            command=RPL_ENDOFWHO,
+            params=["otherNick", InsensitiveStr(mask), ANYSTR],
+        )
+
+    @pytest.mark.skip("Not consistently implemented")
+    def testWhoRealNameSpaces(self):
+        self._init()
+
+        self.sendLine(2, "WHO :*UniqueReal Name")
+        messages = self.getMessages(2)
+
+        self.assertEqual(len(messages), 2, "Unexpected number of messages")
+
+        (reply, end) = messages
+
+        self._checkReply(reply, "H")
+
+        # What to do here? This?
+        # self.assertMessageMatch(
+        #     end,
+        #     command=RPL_ENDOFWHO,
+        #     params=[
+        #         "otherNick",
+        #         InsensitiveStr("*UniqueReal"),
+        #         InsensitiveStr("Name"),
+        #         ANYSTR,
+        #     ],
+        # )
+
+    @pytest.mark.parametrize(
+        "mask", ["coolNick", "coolnick", "coolni*"], ids=["exact", "casefolded", "mask"]
+    )
+    @cases.mark_specifications("Modern")
+    def testWhoNickAway(self, mask):
+        if "*" in mask and self.controller.software_name == "Bahamut":
+            raise runner.OptionalExtensionNotSupported("WHO mask")
+
+        self._init()
+
+        self.sendLine(1, "AWAY :be right back")
+        self.getMessages(1)
+        self.getMessages(2)
+
+        self.sendLine(2, f"WHO {mask}")
+        messages = self.getMessages(2)
+
+        self.assertEqual(len(messages), 2, "Unexpected number of messages")
+
+        (reply, end) = messages
+
+        self._checkReply(reply, "G")
+
+        self.assertMessageMatch(
+            end,
+            command=RPL_ENDOFWHO,
+            params=["otherNick", InsensitiveStr(mask), ANYSTR],
+        )
+
+    @pytest.mark.parametrize(
+        "mask", ["coolNick", "coolnick", "coolni*"], ids=["exact", "casefolded", "mask"]
+    )
+    @cases.mark_specifications("Modern")
+    def testWhoNickOper(self, mask):
+        if "*" in mask and self.controller.software_name == "Bahamut":
+            raise runner.OptionalExtensionNotSupported("WHO mask")
+
+        self._init()
+
+        self.sendLine(1, "OPER operuser operpassword")
+        self.assertIn(
+            RPL_YOUREOPER,
+            [m.command for m in self.getMessages(1)],
+            fail_msg="OPER failed",
+        )
+
+        self.getMessages(2)
+
+        self.sendLine(2, f"WHO {mask}")
+        messages = self.getMessages(2)
+
+        self.assertEqual(len(messages), 2, "Unexpected number of messages")
+
+        (reply, end) = messages
+
+        self._checkReply(reply, "H*")
+
+        self.assertMessageMatch(
+            end,
+            command=RPL_ENDOFWHO,
+            params=["otherNick", InsensitiveStr(mask), ANYSTR],
+        )
+
+    @pytest.mark.parametrize(
+        "mask", ["coolNick", "coolnick", "coolni*"], ids=["exact", "casefolded", "mask"]
+    )
+    @cases.mark_specifications("Modern")
+    def testWhoNickAwayAndOper(self, mask):
+        if "*" in mask and self.controller.software_name == "Bahamut":
+            raise runner.OptionalExtensionNotSupported("WHO mask")
+
+        self._init()
+
+        self.sendLine(1, "OPER operuser operpassword")
+        self.assertIn(
+            RPL_YOUREOPER,
+            [m.command for m in self.getMessages(1)],
+            fail_msg="OPER failed",
+        )
+
+        self.sendLine(1, "AWAY :be right back")
+        self.getMessages(1)
+        self.getMessages(2)
+
+        self.sendLine(2, f"WHO {mask}")
+        messages = self.getMessages(2)
+
+        self.assertEqual(len(messages), 2, "Unexpected number of messages")
+
+        (reply, end) = messages
+
+        self._checkReply(reply, "G*")
+
+        self.assertMessageMatch(
+            end,
+            command=RPL_ENDOFWHO,
+            params=["otherNick", InsensitiveStr(mask), ANYSTR],
+        )
+
+    @pytest.mark.parametrize("mask", ["#chan", "#CHAN"], ids=["exact", "casefolded"])
+    @cases.mark_specifications("Modern")
+    def testWhoChan(self, mask):
+        if "*" in mask and self.controller.software_name == "Bahamut":
+            raise runner.OptionalExtensionNotSupported("WHO mask")
+
+        self._init()
+
+        self.sendLine(1, "OPER operuser operpassword")
+        self.assertIn(
+            RPL_YOUREOPER,
+            [m.command for m in self.getMessages(1)],
+            fail_msg="OPER failed",
+        )
+
+        self.sendLine(1, "AWAY :be right back")
+        self.getMessages(1)
+        self.getMessages(2)
+
+        self.sendLine(2, f"WHO {mask}")
+        messages = self.getMessages(2)
+
+        self.assertEqual(len(messages), 3, "Unexpected number of messages")
+
+        (*replies, end) = messages
+
+        # Get them in deterministic order
+        replies.sort(key=lambda msg: msg.params[5])
+
+        host_re = "[0-9A-Za-z_:.-]+"
+        self.assertMessageMatch(
+            replies[0],
+            command=RPL_WHOREPLY,
+            params=[
+                "otherNick",
+                "#chan",
+                StrRe("~?" + self.username),
+                StrRe(host_re),
+                "My.Little.Server",
+                "coolNick",
+                "G*@",
+                StrRe(realname_regexp(self.realname)),
+            ],
+        )
+
+        self.assertMessageMatch(
+            replies[1],
+            command=RPL_WHOREPLY,
+            params=[
+                "otherNick",
+                "#chan",
+                ANYSTR,
+                ANYSTR,
+                "My.Little.Server",
+                "otherNick",
+                "H",
+                StrRe("[0-9]+ .*"),
+            ],
+        )
+
+        self.assertMessageMatch(
+            end,
+            command=RPL_ENDOFWHO,
+            params=["otherNick", InsensitiveStr(mask), ANYSTR],
+        )
+
+    @cases.mark_specifications("IRCv3")
+    @cases.mark_isupport("WHOX")
+    def testWhoxFull(self):
+        """https://github.com/ircv3/ircv3-specifications/pull/482"""
+        self._testWhoxFull("%tcuihsnfdlaor,123")
+
+    @cases.mark_specifications("IRCv3")
+    @cases.mark_isupport("WHOX")
+    def testWhoxFullReversed(self):
+        """https://github.com/ircv3/ircv3-specifications/pull/482"""
+        self._testWhoxFull("%" + "".join(reversed("tcuihsnfdlaor")) + ",123")
+
+    def _testWhoxFull(self, chars):
+        self._init()
+        if "WHOX" not in self.server_support:
+            raise runner.IsupportTokenNotSupported("WHOX")
+
+        self.sendLine(2, f"WHO coolNick {chars}")
+        messages = self.getMessages(2)
+
+        self.assertEqual(len(messages), 2, "Unexpected number of messages")
+
+        (reply, end) = messages
+
+        self.assertMessageMatch(
+            reply,
+            command=RPL_WHOSPCRPL,
+            params=[
+                "otherNick",
+                "123",
+                StrRe(r"(#chan|\*)"),
+                StrRe("~?myusernam"),
+                ANYSTR,
+                ANYSTR,
+                "My.Little.Server",
+                "coolNick",
+                StrRe("H@?"),
+                ANYSTR,  # hopcount
+                StrRe("[0-9]"),  # seconds idle
+                "0",  # account name
+                ANYSTR,  # op level
+                "My UniqueReal Name",
+            ],
+        )
+
+        self.assertMessageMatch(
+            end,
+            command=RPL_ENDOFWHO,
+            params=["otherNick", InsensitiveStr("coolNick"), ANYSTR],
+        )
+
+    def testWhoxToken(self):
+        """https://github.com/ircv3/ircv3-specifications/pull/482"""
+        self._init()
+        if "WHOX" not in self.server_support:
+            raise runner.IsupportTokenNotSupported("WHOX")
+
+        self.sendLine(2, "WHO coolNick %tn,321")
+        messages = self.getMessages(2)
+
+        self.assertEqual(len(messages), 2, "Unexpected number of messages")
+
+        (reply, end) = messages
+
+        self.assertMessageMatch(
+            reply,
+            command=RPL_WHOSPCRPL,
+            params=[
+                "otherNick",
+                "321",
+                "coolNick",
+            ],
+        )
+
+        self.assertMessageMatch(
+            end,
+            command=RPL_ENDOFWHO,
+            params=["otherNick", InsensitiveStr("coolNick"), ANYSTR],
+        )
+
+
+@cases.mark_services
+class WhoServicesTestCase(BaseWhoTestCase, cases.BaseServerTestCase):
+    @cases.mark_specifications("IRCv3")
+    @cases.mark_isupport("WHOX")
+    def testWhoxAccount(self):
+        self._init(auth=True)
+        if "WHOX" not in self.server_support:
+            raise runner.IsupportTokenNotSupported("WHOX")
+
+        self.sendLine(2, "WHO coolNick %na")
+        messages = self.getMessages(2)
+
+        self.assertEqual(len(messages), 2, "Unexpected number of messages")
+
+        (reply, end) = messages
+
+        self.assertMessageMatch(
+            reply,
+            command=RPL_WHOSPCRPL,
+            params=[
+                "otherNick",
+                "coolNick",
+                "coolAcct",
+            ],
+        )
+
+        self.assertMessageMatch(
+            end,
+            command=RPL_ENDOFWHO,
+            params=["otherNick", InsensitiveStr("coolNick"), ANYSTR],
+        )
+
+    @cases.mark_specifications("IRCv3")
+    @cases.mark_isupport("WHOX")
+    def testWhoxNoAccount(self):
+        self._init(auth=False)
+        if "WHOX" not in self.server_support:
+            raise runner.IsupportTokenNotSupported("WHOX")
+
+        self.sendLine(2, "WHO coolNick %na")
+        messages = self.getMessages(2)
+
+        self.assertEqual(len(messages), 2, "Unexpected number of messages")
+
+        (reply, end) = messages
+
+        self.assertMessageMatch(
+            reply,
+            command=RPL_WHOSPCRPL,
+            params=[
+                "otherNick",
+                "coolNick",
+                "0",
+            ],
+        )
+
+        self.assertMessageMatch(
+            end,
+            command=RPL_ENDOFWHO,
+            params=["otherNick", InsensitiveStr("coolNick"), ANYSTR],
+        )
+
+
+class WhoInvisibleTestCase(cases.BaseServerTestCase):
+    @cases.mark_specifications("Modern")
+    def testWhoInvisible(self):
+        if self.controller.software_name == "Bahamut":
+            raise runner.OptionalExtensionNotSupported("WHO mask")
+
+        self.connectClient("evan", name="evan")
+        self.sendLine("evan", "MODE evan +i")
+        self.getMessages("evan")
+
+        self.connectClient("shivaram", name="shivaram")
+        self.getMessages("shivaram")
+        self.sendLine("shivaram", "WHO eva*")
+        reply_cmds = {msg.command for msg in self.getMessages("shivaram")}
+        self.assertEqual(reply_cmds, {RPL_ENDOFWHO})
+
+        # invisibility should not be respected for plain nicknames, only for masks:
+        self.sendLine("shivaram", "WHO evan")
+        replies = self.getMessages("shivaram")
+        reply_cmds = {msg.command for msg in replies}
+        self.assertEqual(reply_cmds, {RPL_WHOREPLY, RPL_ENDOFWHO})
+
+        # invisibility should not be respected if the users share a channel
+        self.joinChannel("evan", "#test")
+        self.joinChannel("shivaram", "#test")
+        self.sendLine("shivaram", "WHO eva*")
+        replies = self.getMessages("shivaram")
+        reply_cmds = {msg.command for msg in replies}
+        self.assertEqual(reply_cmds, {RPL_WHOREPLY, RPL_ENDOFWHO})