UNIT-TESTING-BASICS5 MIN READ
Coach A Flaky Unit Test Back To Trust
Guide a teammate from rerunning a flaky unit test to isolating and controlling the unstable dependency.
Ravi R teammate on release duty 01 Name 02 Control 03 Commit Flaky CI 30 sec Scenario tokenExpiresSoon_returnsTrue passed locally and failed in CI at 2:13 p.m. The only code difference is the minute the test ran. A rerun may pass, but it leaves the suite less credible. 1/20 failure rate 14 min CI rerun cost
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