WindowsTestingPlan

Overview

Mercurial test suite is a combination of shell scripts with reference outputs and a few python scripts, unusable on a pure Windows platform. [http://hg.intevation.org/beta/mercurial/pmezard/pysh/ pysh] is a unix shell implementation in python designed to run as many tests as possible. While running almost 90% of the test suite, the implementation suffers of the following limitations:

Many utilities are still to be implemented or replaced, which explains why Cygwin is required.
Program outputs like filenames and system messages are hard to simulate. Current solution is to patch the tests to rewrite the output as expected. Two MQ patch queues are currently maintained on top of "crew" and "crew-stable" repositories.
Asynchronous lists are supported, but kill sometimes refuses to kill and the test is stuck waiting for a process to complete. This is pretty rare though.
A couple of tests just cannot be run on Windows platforms for FIFOs do not exist or unix like permissions are not supported. A mechanism to skip them is yet to be written.

Setup

1. Setup [http://hg.intevation.org/beta/mercurial/pmezard/pysh/ pysh] and its dependencies according to README instructions.

Note: You need to run pyshyacc.py in the pysh directory before installing pysh. That generates the pyshtables.py file ([http://selenic.com/pipermail/mercurial-devel/2008-April/006073.html ref]).

2. Clone target "crew" or "crew-stable" (see CrewRepository).

3. Clone the related patch queue from [http://hg.intevation.org/beta/mercurial/pmezard/crew-stable-w32.mq/ crew-stable-w32.mq] or [http://hg.intevation.org/beta/mercurial/pmezard/crew-w32.mq/ crew-w32.mq] and apply it. Both queues are tagged with latest applied Mercurial revision. They are likely to apply on children ones as well, tests evolve rather slowly.

4. Run tests as usual with "run-tests.py"

Few people actually run this procedure and you are likely to encounter setup issues. Please do not give up ! Do not hesitate to send bug reports or suggestions to the author (Patrick Mézard). This tool has been used for almost a year over several Mercurial releases and has proven quite reliable.

Notes

Some relevant mailing list threads:

Comments

AdrianBuehlmann 2008-05-01

I was able to run the tests ("python run-tests.py -v") on crew 626cb86a6523 on Windows XP SP2 with Python 2.5.1. At first, the tests ran only up to test-archive and then hung (hg serve not wanting to be killed). I noticed that I had a stale python.exe process. After killing that manually, the tests ran through with the following summary:

Failed test-convert-git: output changed
Failed test-convert-hg-source: output changed
Failed test-flags: output changed
Failed test-git-export: output changed
Failed test-hgwebdir: output changed
Failed test-imerge: output changed
Failed test-merge-types: output changed and returned error code 1
Failed test-mq: output changed
Failed test-patchbomb: output changed
Failed test-webraw: output changed
# Ran 257 tests, 26 skipped, 10 failed.

CategoryWindows CategoryTesting