226: pytest-mock : Mocking in pytest

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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

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