prompts/skills/pytest-scaffolding/references/pytest-docs.md

Pytest Documentation Notes

Primary references used:

• https://docs.pytest.org/en/stable/explanation/goodpractices.html
• https://docs.pytest.org/en/stable/how-to/fixtures.html
• https://docs.pytest.org/en/stable/example/markers.html
• https://docs.pytest.org/en/stable/reference/customize.html
• https://docs.pytest.org/en/stable/explanation/flaky.html

Practical Guidance For This Skill

• Use src-aligned test layout and keep test discovery conventional.
• Keep fixtures small, composable, and explicit; use yield for teardown.
• Register custom markers and keep strict marker validation on.
• Separate quick unit runs from slower integration/external runs.
• Minimize flakiness by controlling shared state and avoiding hidden dependencies.
• Use --collect-only and marker-filtered runs to validate scaffold quality early.

Commands Worth Remembering

• uv run pytest --collect-only -q
• uv run pytest -m unit -q
• uv run pytest -m "not external" -q
• uv run pytest -q