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Running ycmd tests

This readme documents instructions on running the test suite

Requirements for running the tests

You need to have installed:

  • nose (pip install nose)
  • mock (pip install mock)
  • flake8 (pip install flake8)
  • webtest (pip install webtest)
  • hamcrest (pip install PyHamcrest)

See test_requirements.txt for specific minimum versions

You also need to have build requirements for all of:

mono non-standard path

Note: if your installation of mono is in a non-standard location, OmniSharpServer will not start. Ensure that it is in a standard location, or change the paths in OmniSharpServer/OmniSharp/Solution/CSharpProject.cs

A patch will be submitted upstream to read paths from the environment.

Running the tests

To run the full suite, just run run_tests.py. Options are:

  • --skip-build: don't attempt to run the build build.py, e.g. if you use a non-standard build environment (e.g. cmake28, self-build of clang, etc.)
  • --no-clang-completer: don't attempt to test the clang completer. Can also be set via environment variable USE_CLANG_COMPLETER.

Remaining arguments are passed to "nosetests" directly. This means that you can run a specific script or a specific test as follows:

  • Specific test: ./run_tests.py ycmd/tests/<module_name>.py:<function name>
  • Specific script: ./run_tests.py ycmd.tests.<module_name>

For example:

  • ./run_tests.py ycmd/tests/subcommands_test.py:RunCompleterCommand_GetType_test
  • ./run_tests.py ycmd.tests.subcommands_test

NOTE: you must have UTF8 support in your terminal when you do this, e.g.:

> LANG=en_GB.utf8 ./run_tests.py --skip-build

Troubleshooting

All the tests fail with some missing package.

Check the list of pip packages to install above. If there is one not listed, install it and add it to the list.

All the CsCompleter tests fail on unix.

Likely to be a problem with the OmniSharpServer.

  • Check that you have compiled OmniSharpServer in third-party/OmniSharpServer

  • Check that OmniSharpServer starts manually from ycmd/tests/testdata with

    mono ../../../third_party/OmniSharpServer/OmniSharp/bin/Debug/OmniSharp.exe -s testy/testy.sln

You get one or all of the following failures

ERROR: ycmd.tests.get_completions_test.GetCompletions_CsCompleter_PathWithSpace_test
FAIL: ycmd.completers.general.tests.filename_completer_test.FilenameCompleter_test.QuotedIncludeCompletion_test
FAIL: ycmd.completers.general.tests.filename_completer_test.FilenameCompleter_test.SystemPathCompletion_test

Ensure that you have UTF-8 support in your environment (see above)

Some of the CsCompleter tests just hang

I think this is a timing issue of some sort because running the test suite again appears to work.