Restore the original irctest README.

README.md

@@ -1,11 +1,117 @@
 # irctest
 
-This is the integration test suite for Oragono, ultimately derived from [ProgVal/irctest](https://github.com/ProgVal/irctest), which is a general-purpose IRC protocol compatibility testing suite.
+This project aims at testing interoperability of software using the
+IRC protocol, by running them against test suites and making different
+software communicate with each other.
 
-Some of these tests may be applicable to other projects (we attempt to mark the tests that are only applicable to Oragono).
+It is very young and does not contain a lot of test cases yet.
 
-This suite needs more test cases. Contributions are welcome and are a great way to help the Oragono project!
+## The big picture
 
-## Running Tests
+This project contains:
+
+* IRC protocol test cases
+* small wrappers around existing software to run tests on them
+
+Wrappers run software in temporary directories, so running `irctest` should
+have no side effect, with [the exception of Sopel](https://github.com/sopel-irc/sopel/issues/946).
+
+## Prerequisites
+
+Install irctest and dependencies:
+
+```
+git clone https://github.com/ProgVal/irctest.git
+cd irctest
+pip3 install --user -r requirements.txt
+python3 setup.py install --user
+```
+
+Add `~/.local/bin/` to your `PATH` if it is not.
+
+```
+export PATH=$HOME/.local/bin/:$PATH
+```
+
+## Run tests
+
+To run (client) tests on Limnoria:
+
+```
+pip3 install --user limnoria
+python3 -m irctest irctest.controllers.limnoria
+```
+
+To run (client) tests on Sopel:
+
+```
+pip3 install --user sopel
+mkdir ~/.sopel/
+python3 -m irctest irctest.controllers.sopel
+```
+
+To run (server) tests on InspIRCd:
+
+```
+cd /tmp/
+git clone https://github.com/inspircd/inspircd.git
+cd inspircd
+./configure --prefix=$HOME/.local/ --development
+make -j 4
+make install
+python3 -m irctest irctest.controllers.inspircd
+```
+
+To run (server) tests on Mammon:
+
+```
+pip3 install --user git+https://github.com/mammon-ircd/mammon.git
+python3 -m irctest irctest.controllers.mammon
+```
+
+To run (server) tests on Charybdis::
+
+```
+cd /tmp/
+git clone https://github.com/atheme/charybdis.git
+cd charybdis
+./configure --prefix=$HOME/.local/
+make -j 4
+make install
+python3 -m irctest irctest.controllers.charybdis
+```
+
+## Full help
+
+```
+usage: python3 -m irctest [-h] [--show-io] [-v] [-s SPECIFICATION] [-l] module
+
+positional arguments:
+  module                The module used to run the tested program.
+
+optional arguments:
+  -h, --help            show this help message and exit
+  --show-io             Show input/outputs with the tested program.
+  -v, --verbose         Verbosity. Give this option multiple times to make it
+                        even more verbose.
+  -s SPECIFICATION, --specification SPECIFICATION
+                        The set of specifications to test the program with.
+                        Valid values: RFC1459, RFC2812, IRCv3.1, IRCv3.2. Use
+                        this option multiple times to test with multiple
+                        specifications. If it is not given, defaults to all.
+  -l, --loose           Disables strict checks of conformity to the
+                        specification. Strict means the specification is
+                        unclear, and the most restrictive interpretation is
+                        choosen.
+```
+
+## What `irctest` is not
+
+A formal proof that a given software follows any of the IRC specification,
+or anything near that.
+
+At best, `irctest` can help you find issues in your software, but it may
+still have false positives (because it does not implement itself a
+full-featured client/server, so it supports only “usual” behavior).
+Bug reports for false positives are welcome.
 
-Make sure the version of `oragono` you want to test is on your PATH. Then run `make`.