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Code

pytest-mock

This plugin provides a mocker fixture which is a thin-wrapper around the patching API provided by the mock package:

import os

class UnixFS:

    @staticmethod
    def rm(filename):
        os.remove(filename)

def test_unix_fs(mocker):
    mocker.patch('os.remove')
    UnixFS.rm('file')
    os.remove.assert_called_once_with('file')

Besides undoing the mocking automatically after the end of the test, it also provides other nice utilities such as spy and stub, and uses pytest introspection when comparing calls.

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Professionally supported pytest-mock is available.

Documentation

For full documentation, please see https://pytest-mock.readthedocs.io/en/latest.

License

Distributed under the terms of the MIT license.