End to end testing a world of web, mobile & desktop apps

on YouTube ↗31m

" summary

Profile card code serving 100M+ users runs on six platforms (Win32, Win10, Mac, iOS, Android, web including IE11) and the team builds an internal end-to-end framework using React + TypeScript, Puppeteer for Chromium, Appium/WinAppDriver for native, and a custom runner that injects tests into live host apps so one browser session can run thousands of scenarios. Visual regression uses a fast side‑by‑side pixel diff tool (thousands of screenshots/min) and catches issues like a CSS bug that created 30–40k repeated stylesheets in IE11. Tests use live data for web and mock/replay for native.

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" chapters (7)

1. 0:00Start
2. 2:44Contact Editor
3. 2:56Search Box
4. 6:33Unit Testing
5. 11:59Puppeteer
6. 22:31Visual Regression Testing
7. 29:04Test Components in Isolation

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