React Testing Patterns

When to Use

Activate this skill when:

• Writing tests for React components (rendering, interaction, accessibility)
• Testing custom hooks with renderHook
• Mocking API calls with MSW (Mock Service Worker)
• Testing async state changes (loading, error, success)
• Auditing component accessibility with jest-axe
• Setting up test infrastructure (providers, test utilities)

Do NOT use this skill for:

• E2E browser tests with Playwright (use e2e-testing)
• Backend Python tests (use pytest-patterns)
• TDD workflow enforcement (use tdd-workflow)
• Writing component implementation code (use react-frontend-expert)

Instructions