226: pytest-mock : Mocking in pytest
Update: 2025-01-31
Description
pytest-mock is currently the #3 pytest plugin.
pytest-mock is a wrapper around unittest.mock.
In this episode:
- Why the pytest-mock plugin is awesome
- What is mocking, patching, and monkey patching
- What, if any, is the difference between mock, fake, spy, stub.
- Why we might need these in testing
- Some history of mock in Python and how mock became unittest.mock
- From unittest.mock
- patch.object
- patch.object with autospec
- using these as context managers
- pytest-mock:
- The mocker fixture
- Cleanup in teardown
- Using mocker.patch, mocker.spy, and mocker.stub
- Why it's awesome and why you might want to use it over straight unittest.mock
Links:
- top pytest plugins list
- pytest-mock documentation
- unittest.mock
- Podcast episode discussing unittest.mock with Michael Foord
- monkeypatch
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