Pillow/Tests/README.rst
Jon Dufresne 4de5477b61 Remove unnecessary unittest.main() boilerplate from test files
With the introduction and use of pytest, it is simple and easy to
execute specific tests in isolation through documented command line
arguments. Either by specifying the module path or through the `-k
EXPRESSION` argument. There is no longer any need to provide the
boilerplate:

    if __name__ == '__main__':
        unittest.main()

To every test file. It is simply noise.

The pattern remains in test files that aren't named with `test_*` as
those files are not discovered and executed by pytest by default.
2019-02-03 10:10:16 -08:00

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Pillow Tests
============
Test scripts are named ``test_xxx.py`` and use the ``unittest`` module. A base class and helper functions can be found in ``helper.py``.
Dependencies
-----------
Install::
pip install pytest pytest-cov
Execution
---------
To run an individual test::
pytest Tests/test_image.py
Or::
pytest -k test_image.py
Run all the tests from the root of the Pillow source distribution::
pytest
Or with coverage::
pytest --cov PIL --cov-report term
coverage html
open htmlcov/index.html