Adventures In Testing A Test Automation Service
summary
Applitools operates a visual test cloud with 20K tenant cloud handling millions of checks monthly and dozens of dedicated/on‑prem instances. SDKs perform device pixel scaling, stitching and delta compression; releasing an SDK requires manual packaging and multi‑runtime validation that can take up to an hour. Backend logic runs as in‑memory server instances so end‑to‑end tests finish in seconds. Front end testing uses Hava and Sauce Labs with a proxy to exercise local code against cloud test data, yielding about 99% visual coverage and quick feedback.
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chapters (22)
- 0:00Start
- 0:51WHAT IS VISUAL TESTING?
- 1:51HOW DOES IT WORK?
- 3:3524/7 PRODUCTION ACTIVITY
- 3:55CLOUD DEPLOYMENT PROCESS
- 7:39THE TEAM
- 8:05SUBSYSTEMS UNDER TEST
- 8:16WHAT TO TEST?
- 10:43BENCHMARK TESTS
- 11:49THE BENCHMARK APP
- 12:30SDK RELEASE PROCESS
- 15:25DESIGN: A THIN WEB API LAYER
- 16:18DESIGN: STORAGE ABSTRACTION
- 18:48PRODUCTION TESTING
- 21:38CHALLENGES
- 23:00FAST FEEDBACK-CONCURRENCY
- 24:16FAST FEEDBACK!
- 24:48PRE-COMMIT TESTS
- 26:40REDUCING MAINTENANCE
- 31:34AREAS FOR IMPROVEMENT
- 32:29MAIN TAKEAWAYS
- 38:43is good or not?
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