Test flakiness is a major time sink in development, with debugging often taking longer than writing the tests themselves.
Use the Cypress timeline to inspect the DOM state at different points in time and diagnose a flaky test caused by a race condition.
Playwright's Trace Viewer provides a time-travel debugging experience similar to Cypress, which is especially valuable for analyzing test failures in CI environments.
Testers often instinctively try to fix a flaky test with waits or retries, but the more robust solution is often to fix the underlying instability in the application itself.
Replay.io is a browser that records everything, allowing you to retroactively add print statements and use a time-travel debugger to inspect application state.
By integrating Replay.io into a Cypress test suite, you can analyze the full application runtime, including internal state and network calls, to find the root cause of flakiness.
Fixing an API race condition by disabling a UI element until the necessary data has loaded makes the application more stable and eliminates the need for artificial waits in the test.
The speaker answers questions about Replay.io's technical foundation, its integration with CI/CD pipelines, and strategies for handling sensitive data during recordings.
42:34Ryan Latta
43:07Golo Roden
54:23Ramona Schwering
56:49Jens Happe
53:58Soumaya Erradi
28:33Daniel Afonso
44:59Ramona Schwering
53:45Anna McDougall
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