Quality
React Testing Libraries 2026 | RTL, Vitest
Jun 2, 2026 · 6 min read
Test user behavior, not implementation details. Pair Testing Library with Vitest, then add Playwright for the paths that pay the bills.
Unit and component tests
Vitest is the default for Vite apps. Jest still works. Testing Library keeps queries close to how users find buttons and text.
Avoid snapshot spam. Assert names, roles, and outcomes.
E2E when it matters
Playwright and Cypress catch wiring bugs unit tests miss. Keep the suite small and stable.
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