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This skill provides a comprehensive framework for Jest unit testing within the CUI ecosystem, ensuring consistent test organization, robust mocking strategies, and strict adherence to coverage thresholds. It guides developers through complex testing scenarios—such as mocking Lit components and managing DOM environments—while offering automated workflows to analyze coverage reports and identify critical testing gaps. By implementing the AAA (Arrange-Act-Assert) pattern and standardized file structures, it ensures that your test suite remains maintainable, predictable, and high-quality.
