2025 10 03 04 DANIEL ALONSO CONGRESO REACT ALICANTE The international React js conference in Spai
summary
Data: 13% not testing, mocking and ESM/TypeScript config are the biggest pains, and Jest remains dominant but shows experimental ESM/TS support. Companies pair Jest + React Testing Library for unit/integration, Playright leads end-to-end, and mock service worker (MSW) is the de facto API mock. Migration trend moves from JSDOM to V test browser mode or Playright so component tests run in real browsers. AI speeds test writing and enables self‑healing at the cost of latency and verification.
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chapters (16)
- 0:00Conference welcome
- 1:11Why we test code
- 2:40React testing pain points
- 4:26Speaker and survey
- 5:30Companies' testing approaches
- 8:42Testing trophy and static analysis
- 10:49Testing tools evolution
- 16:30Mock Service Worker impact
- 18:56Migrating to Vite testing
- 21:44Future of component testing
- 22:05End-to-end testing overview
- 24:54Storybook for testing
- 26:17Mock Service Worker standard
- 27:18AI in testing limits
- 28:43Self-healing tests
- 31:33Recap and closing
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