Pytest Patterns

When to Use

Activate this skill when:

• Writing unit tests for service or repository classes
• Writing integration tests for FastAPI endpoints with httpx.AsyncClient
• Creating or refactoring pytest fixtures and conftest files
• Setting up factory_boy factories for test data
• Testing async code with pytest-asyncio
• Mocking external services (HTTP APIs, email, queues)
• Adding parametrized tests for input variations
• Auditing or improving test coverage

Do NOT use this skill for:

• Frontend React component or hook tests (use react-testing-patterns)
• E2E browser tests with Playwright (use e2e-testing)
• TDD red-green-refactor workflow enforcement (use tdd-workflow)
• Writing application code (use python-backend-expert)