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What is your single favorite mocking library for Python?
I’ve only used one, but I’ve had good results with Michael Foord’s Mock: http://www.voidspace.org.uk/python/mock/.
Michael’s introduction says it better than I could:
There are already several Python mocking libraries available, so why another one?
Most mocking libraries follow the ‘record -> replay’ pattern of mocking. I prefer the ‘action -> assertion’ pattern, which is more readable and intuitive particularly when working with the Python unittest module.
It also provides utility functions / objects to assist with testing, particularly monkey patching.
I’m the author for mocktest. I think it’s pretty fully featured and easy to use, but I might be biased:
pyDoubles the test doubles framework for Python, by iExpertos.com. It supports mocks, stubs, spies and matchers, including Hamcrest matchers