Tester

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When tests fail on code that was previously tested, this is a strong signal that something is newly wrong with the code. Before, the tests passed and the code was correct; now the tests fail and the code is not working right. The goal of a good test suite is to make this signal as clear and directed as possible.Flaky (nondeterministic) tests, however, are different. Flaky tests are tests that exhibit both a passing and a failing result with the same code. Given this, a test failure may or may not mean that there's a new problem. And trying to...