unittest quiz

Test your unittest knowledge with a free interactive quiz — 21 questions with answers and explanations. No signup needed to play.

What is `unittest`?

1. What is `unittest`?
2. What is the purpose of `Mock` objects (from `unittest.mock`), independent of `patch`?
3. What is the difference between `assertEqual` and using a plain `assert` statement in a unittest test?
4. What is the purpose of `side_effect` on a `Mock` object?
5. How does test discovery (`python -m unittest discover`) find test files by default?
6. What is the purpose of the `setUp` method on a `TestCase`?
7. What happens when a test method raises an unexpected exception that is NOT explicitly asserted against with `assertRaises`?
8. What is the purpose of `tearDown`, and when does it run relative to a test method?
9. What does `assertIn` check?
10. What is the difference between `setUp`/`tearDown` and `setUpClass`/`tearDownClass`?
11. What is a key limitation of `unittest` compared to `pytest`, a popular third-party alternative?
12. What does `assertAlmostEqual` address that `assertEqual` does not handle well?

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