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docs/python: more infos regarding failing tests

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Jörg Thalheim 2017-09-25 14:00:47 +01:00 committed by GitHub
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doc/languages-frameworks/python.md
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@ -785,7 +785,20 @@ example of such a situation is when `py.test` is used.
#### Common issues
- Non-working tests can often be deselected. In the case of `py.test`: `py.test -k 'not function_name and not other_function'`.
- Non-working tests can often be deselected. By default `buildPythonPackage` runs `python setup.py test`.
Most python modules follows the standard test protocol where the pytest runner can be used instead.
`py.test` supports a `-k` parameter to ignore test methods or classes:
```nix
buildPythonPackage {
# ...
# assumes the tests are located in tests
checkInputs = [ pytest ];
checkPhase = ''
py.test -k 'not function_name and not other_function' tests
'';
}
```
- Unicode issues can typically be fixed by including `glibcLocales` in `buildInputs` and exporting `LC_ALL=en_US.utf-8`.
- Tests that attempt to access `$HOME` can be fixed by using the following work-around before running tests (e.g. `preCheck`): `export HOME=$(mktemp -d)`