majiayu000 Next.js Testing
Priority: P1 (HIGH)
Structure
tests/
├── unit/ # Vitest + RTL
├── e2e/ # Playwright
└── mocks/ # MSW Handlers
Implementation Guidelines
- Unit Testing: Use Vitest for speed and React Testing Library for components.
- E2E Testing: Use Playwright for full-stack App Router validation.
- MSW: Mock API boundaries using Mock Service Worker (server + client).
- RSC Testing: Test Server Components via unit tests or full E2E flow.
- Data Isolation: Use isolation strategies for test databases/cache.
- CI reporting: Ensure JSON/JUnit output for automated analysis.
Anti-Patterns
- Real Fetches: No real network usage: Always use MSW or mocks.
- Shallow Testing: No implementation testing: Test user behavior only.
- Slow suites: No heavy E2E for unit logic: Use Vitest for logic.
- Global mocks: No global state leakage: Reset mocks after each test.
References
- Next.js Test Patterns