Blink and You’ll Miss It: Stories From Discovering Most Annoying Bugs and Test Flakes
summary
Shows concrete debugging steps, records CI failures and time‑travels them with Replay.io time-travel debugger, explains real fixes: replace flaky throttling with a fixed delay that catches a transient spinner, adjust precise coordinate-based drag when a subtle CSS font weight shift moves targets, and add isDisabled on the Add‑to‑cart button to prevent a race that sends quantity 0. Shares a Metabase case where integration with Replay reduced flakes to practically zero on main branch and demos the exact code edits to make tests reliable.
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chapters (9)
- 0:00Flaky UI tests frustration
- 4:00Outdated testing pyramid
- 6:30Strategies for test flakes
- 8:14Spinner timing with Replay
- 13:39CSS causing test failure
- 17:19Race condition in e-commerce
- 32:52Accessibility test false positive
- 40:05Reducing debugging time
- 42:40Q&A on AI in testing
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