Add tests for INFO (#121)

* Add tests for INFO

* Workaround remote INFO being oper-only on some ircds

* Skip testInfoNosuchserver on Ergo

* info: Mark tests with target as deprecated.

Makefile

@@ -39,8 +39,10 @@ CHARYBDIS_SELECTORS := \
 	and not (testWhoisNumerics and oper) \
 	$(EXTRA_SELECTORS)
 
+# testInfoNosuchserver does not apply to Ergo: Ergo ignores the optional <target> argument
 ERGO_SELECTORS := \
 	not deprecated \
+	and not testInfoNosuchserver \
 	$(EXTRA_SELECTORS)
 
 # testInviteUnoppedModern is the only strict test that Hybrid fails

irctest/server_tests/info.py

@@ -0,0 +1,112 @@
+"""
+The INFO command.
+"""
+
+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)
+    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],
+        )