Mocking of mocks. A deep dive into the mock module
summary
An in-depth look at Python’s mock module, explaining how to create and use mock objects for testing. Covers techniques for nesting and composing mocks, common pitfalls when mocking dependencies, and practical examples using the mock API (patch, MagicMock, side_effect, etc.).
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chapters (17)
- 0:00Mocks in Python
- 1:26Why use mocks?
- 3:12Basic Mocks
- 5:40MagicMock vs Mock
- 7:03Side effects in mocks
- 8:06Mocking functions
- 8:27Mock patch for dependencies
- 10:34Common mock problems
- 11:37Spec and autospec in Python 3.7
- 13:23Mocking real objects
- 14:25Sentinels in mocks
- 15:27How patch works
- 16:54Correct patching scope
- 17:36Named mocks
- 18:20Verify mock calls
- 19:23Practical mock example
- 21:31Common errors and fixes
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