Detect test smells, overmocking, flaky tests, and coverage issues. Analyze test effectiveness, maintainability, and reliability. Use when reviewing tests or improving test quality.
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Detect test smells, overmocking, flaky tests, and coverage issues. Analyze test effectiveness, maintainability, and reliability. Use when reviewing tests or improving test quality.
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Stars194
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LanguageTypeScript
LicenseMIT
📦 Ships with claude-skills
</> SKILL.md
test-quality-analysis.SKILL.md
---name: test-quality-analysis
description: Detect test smells, overmocking, flaky tests, and coverage issues. Analyze test effectiveness, maintainability, and reliability. Use when reviewing tests or improving test quality.
allowed-tools: Bash, Read, Edit, Write, Grep, Glob, TodoWrite
license: MIT
---# Test Quality Analysis
Expert knowledge for analyzing and improving test quality - detecting test smells, overmocking, insufficient coverage, and testing anti-patterns.
## Core Dimensions
- **Correctness**: Tests verify the right behavior
- **Reliability**: Tests are deterministic, not flaky
- **Maintainability**: Tests are easy to understand
- **Performance**: Tests run quickly
- **Coverage**: Tests cover critical code paths
- **Isolation**: Tests don't depend on external state
## Test Smells
### Overmocking
**Problem**: Mocking too many dependencies makes tests fragile.
```typescript
// ❌ BAD: Overmocked
test('calculate total', () => {
const mockAdd = vi.fn(() => 10)
const mockMultiply = vi.fn(() => 20)
// Testing implementation, not behavior
})
