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name: refactor-test-safety-net description: "[Code Quality] Establishes test coverage requirements before refactoring. Use to identify missing tests, create minimal safety net tests, and define verification strategy for behavior preservation."

Refactor: Test Safety Net

Ensure adequate test coverage before making changes.

Pre-Refactoring Test Checklist

1. Coverage Assessment

• What's the current test coverage?
• Which paths are untested?

2. Test Types Needed

3. Minimal Safety Net

Priority 1: Happy path test Priority 2: Error handling test Priority 3: Edge case test

Rules

1. Never refactor without tests on the target code
2. Add tests BEFORE changes, not after
3. Characterization tests capture behavior, not correctness
4. Run tests after each small step