Pytest Code Review

Quick Reference

Review gates

Work in order. Do not assert pytest-specific problems until each applicable gate passes.

1. Scoped files — Pass when: You list every test_*.py and any conftest.py you will cite; no findings for files outside that list.
2. Async vs sync — Pass when: Per scoped file, you note whether it uses async def test_* / await; if yes, open references/async-testing.md before criticizing async usage.
3. Fixtures — Pass when: If shared setup matters, you name the conftest.py path(s) or state none; for yield fixtures, confirm cleanup exists before claiming resource leaks.
4. patch / mocks — Pass when: For any patch or mock critique, you give the import path where the symbol is used (call site), or mark N/A; open references/mocking.md when mocking is central to the review.
5. Findings — Pass when: Each finding includes a file path and line(s) or test node id, not a generic rule restatement.

Review Checklist

• [ ] Test functions are async def test_* for async code under test
• [ ] AsyncMock used for async dependencies, not Mock
• [ ] All async mocks and coroutines are awaited
• [ ] Fixtures in conftest.py for shared setup
• [ ] Fixture scope appropriate (function, class, module, session)
• [ ] Yield fixtures have proper cleanup in finally block
• [ ] @pytest.mark.parametrize for similar test cases
• [ ] No duplicated test logic across multiple test functions
• [ ] Mocks track calls properly (assert_called_once_with)
• [ ] patch() targets correct location (where used, not defined)
• [ ] No mocking of internals that should be tested
• [ ] Test isolation (no shared mutable state between tests)

When to Load References

• Reviewing async test functions → async-testing.md
• Reviewing fixtures or conftest.py → fixtures.md
• Reviewing similar test cases → parametrize.md
• Reviewing mocks and patches → mocking.md

Review Questions

1. Are all async functions tested with async def test_*?
2. Are fixtures properly scoped with appropriate cleanup?
3. Can similar test cases be parametrized to reduce duplication?
4. Are mocks tracking calls and used at the right locations?