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/test-coverage Command

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Process

1. Detect Test Framework - Identify coverage tool
2. Analyze Coverage Report - List files below 80%
3. Generate Missing Tests - Prioritize happy path, errors, edge cases
4. Verify - Run tests and check coverage
5. Report - Show before/after comparison

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Supported Test Frameworks

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Test Generation Priority

1. Happy path - Core functionality with valid inputs
2. Error handling - Invalid inputs, missing data, network failures
3. Edge cases - Empty arrays, null/undefined, boundary values
4. Branch coverage - Each if/else, switch case, ternary

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Command Syntax

/test-coverage

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Example Output

Coverage Report
──────────────────────────────
File                   Before  After
src/services/auth.ts   45%     88%
src/utils/validation.ts 32%    82%
──────────────────────────────
Overall:               67%     84%  ✅

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Coverage Targets

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Test Generation Rules

• Place tests adjacent to source: foo.ts → foo.test.ts
• Use existing test patterns from the project
• Mock external dependencies (database, APIs, file system)
• Each test should be independent
• Name tests descriptively: test_create_user_with_duplicate_email_returns_409

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Related

• Commands: /tdd, /verify, /e2e