2025 10 04 25 KATE MARSHALKINA CONGRESO REACT ALICANTE The international React js conference in S
summary
Argues to prioritize business critical flows not happy paths and shows an actual MFA bug allowed any code that slipped through. Uses Playwright web-first assertions and switches textContent to toHaveText to fix a flaky quiz test that fails about 8 of 20 runs. Reveals expect timeout defaults to 5s (demo uses 7777ms) and explains Playwright actionability checks. Scales from 3 workers (≈1 hour) to 12 workers (<20 minutes) and recommends deleting slow fragile tests.
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chapters (6)
- 0:00Introduction
- 1:53Happy path to critical flows
- 2:37Fixing test flakiness
- 9:37Speed and parallelization in end-to-end tests
- 11:49Optimizing tests and performance
- 12:34Modern testing strategies
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