A test you cannot trust is a useless test. If I had to pick a single reason that undermines developers' trust in their tests that would be flakiness.
The S.M.A.R.T. framework is an abbreviation that describes the sequence of steps you take to resolve a flaky test, providing a plan of action whenever a test fails on CI.
The very first thing you do when encountered a flaky test is you skip it. Even a single flaky test brings the reliability of your entire test suite to zero.
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