refactor-test-safety-net
SKILL.md
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
| Type | Purpose | When Required |
|---|---|---|
| Unit | Function behavior | Always |
| Integration | Component interaction | Cross-module changes |
| Snapshot | UI/Output structure | View refactoring |
| Regression | Known bug prevention | Bug-prone areas |
3. Minimal Safety Net
Priority 1: Happy path test Priority 2: Error handling test Priority 3: Edge case test
Rules
- Never refactor without tests on the target code
- Add tests BEFORE changes, not after
- Characterization tests capture behavior, not correctness
- Run tests after each small step
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