pytest-Inomaly

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

Requirements

Requires scipy and pytest to calculate the differences.

• scipy
• pytest

Installation

You can install "pytest-Inomaly" via pip_ from PyPI_::

$ pip install pytest-Inomaly

Usage

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

Contributing

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.

License

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

Issues

If you encounter any problems, please file an issue_ along with a detailed description.