What the mock? - A cheatsheet for mocking in Python

It’s just a fact of life, as code grows eventually you will need to start adding mocks to your test suite. What started as a cute little two class project is now talking to external services and you cannot test it comfortably anymore. That’s why Python ships with unittest.mock, a powerful part of the standard library for stubbing dependencies and mocking side effects. However, unittest.mock is not