Tests

For each failing test:

• Read the test file and understand what it's testing
• Read the implementation being tested
• Identify the root cause of the failure
• Fix the implementation (preferred) or update the test if the test is incorrect
• Re-run the specific test to verify the fix:

  pytest path/to/test_file.py::test_name -v
  

Iterate until all tests pass:

• Continue fixing failures one by one
• After each fix, run the full test suite to check for regressions
• Document any tests that cannot be fixed and why

Final verification:

pytest -v