What problem does it solve? Test suites often pass while verifying very little — tests with no assertions, only trivial null checks, or the same equality assertion repeated everywhere give false confidence. This Skill audits your test code to measure how varied and meaningful the assertions actually are, exposing shallow tests that let bugs slip through. ## Core Features & Use Cases - Assertion Classification: Categorizes every assertion into 12 language-neutral types (equality, exception, negative, state/side-effect, structural/deep, and more) across .NET, Python, TypeScript/JavaScript, Java, Go, Ruby, Rust, Swift, Kotlin, PowerShell, and C++. - Diversity Metrics: Computes per-test and suite-wide metrics including average assertions per test, assertion type spread, zero-assertion tests, trivial-only tests, and self-referential/tautological assertions. - Calibrated Reporting: Applies calibration rules so exception tests, guard null checks, mock verifications, and snapshot tests are not misflagged, then produces a summary dashboard, gap analysis, and prioritized recommendations. - Use Case: Point the Skill at a freshly generated test project to find that 60% of tests use only equality assertions, three tests have no assertions at all, and error paths lack any exception verification — then get concrete suggestions for which assertion types to add where. ## Quick Start Analyze the assertion quality of all tests in my test project and report which tests are shallow, assertion-free, or lacking diversity.