Please check the following things:
- Skipped tests
- Expected failures/Unexpected success
- stderr and stdout should go via testStdErr and testStdOut messages
- testStdErr and testStdOut should not take large output (~ >50K), you may split it by chunks
- Failures in setup, teardown on all levels (class, module, namespace)
- Syntax and other errors when collecting tests should be correctly reported
- Internal test framework errors should be reported if possible
- doctests
- Test generators and parametrized tests
- assert failures vs generic exceptions (failure/error)
- Coverage support
- Check unicode handling across Python 2, Python 3 and various places (test id, skip reason, failure reason etc)