概要
The Testing Quality Analysis skill provides a rigorous framework for evaluating the true effectiveness of a codebase's test suite beyond simple coverage metrics. By adopting a skeptical 'SRE-level' mindset, it systematically identifies tests that provide false confidence, such as 'line-hitters' that execute code without meaningful assertions or 'mock-testing' that ignores production logic. This skill forces a line-by-line justification of test validity, ensuring your suite catches real bugs and covers critical edge cases rather than just satisfying vanity metrics.