6 articles
RSSHow to fix freezegun errors — freeze_time decorator not affecting datetime.now, timezone-aware datetime mismatch, time.time not frozen, async test time leak, third-party library still using real time, and tick parameter behavior.
How to fix Moto errors — mock not activating, real AWS credentials used in tests, ImportError mock_s3 removed in v5, fixtures with multiple services, NoCredentialsError despite mock, and standalone server mode.
How to fix Nox errors — no noxfile.py found, session not detected, virtualenv backend uv not installed, session.install fails outside virtualenv, parametrize matrix exploding, and reuse_venv confusion.
How to fix Hypothesis errors — Unsatisfied assumption, Flaky test detected, HealthCheck data_too_large, strategy composition failing, example database stale, settings profile not found, and stateful testing errors.
How to fix Tox errors — ERROR cannot find Python interpreter, tox.ini config parsing error, allowlist_externals required, recreating environments slow, pyproject.toml integration, and matrix env selection.
How to fix pytest errors like 'fixture not found', 'ERRORS collecting test', or 'no tests ran' caused by missing conftest.py, wrong scope, or import issues.