Unit Testing
petrkindlmann/qa-skills/skills/unit-testingby petrkindlmannb3bb61bd268bMIT168 starsListed Oct 9, 2026Updated Oct 9, 2026Repository updated 4 months ago
Write effective unit tests with Jest, Vitest, or pytest. Covers the test-doubles taxonomy (stub/spy/mock/fake), Arrange-Act-Assert, coverage threshold configuration and CI gating, snapshot testing, fake timers, and mutation testing with Stryker/mutmut. Use when: "unit test," "Jest," "Vitest," "pytest," "mock," "coverage threshold," "test doubles," "mutation testing," "fake timers," "snapshot test." Not for: interpreting coverage reports or finding coverage gaps — use coverage-analysis; AI generating the test code for you — use ai-test-generation; auditing existing tests for smells — use ai-qa-review; browser/component rendering assertions — use cypress-automation or visual-testing. Related: coverage-analysis, ci-cd-integration, ai-test-generation, shift-left-testing.
- b3bb61bd268bCurrentcommit b3bb61bPublished Oct 9, 2026
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License: MIT
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