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A simple image diff plugin for pytest

Project description


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A simple image diff plugin for pytest currently provides two new methods, use full for testing image related code and making sure the results do not change unexpectedly.

- pytest.idiff - returns true or false
- pytest.idiff_variance - returns the difference between the two images

Requires scipy and pytest to calculate the differences.

- scipy
- pytest


You can install "pytest-Inomaly" via `pip`_ from `PyPI`_::

$ pip install pytest-Inomaly


Assert images are identical.

assert idiff(path_to_first_image, path_to_second_image) is True

Assert images are almost identical, allow some variation for anti aliasing or similar.

assert idiff(path_to_first_image, path_to_second_image, tolerance=0.1) is True

Same as the above two method but will return the difference as a value instead of true or false.

assert idiff_tolerance(path_to_first_image, path_to_second_image, tolerance=0.1) == 3.14

Contributions are very welcome. Tests can be run with `tox`_, please ensure
the coverage at least stays the same before you submit a pull request.


Distributed under the terms of the `MIT`_ license, "pytest-Inomaly" is free and open source software


If you encounter any problems, please `file an issue`_ along with a detailed description.

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