Testing Skill
Comprehensive testing guidance covering:
- TDD Workflow: Red → Green → Refactor cycle with practical examples
- Test Organization: Unit / Integration / E2E test structure
- Framework Support: pytest, Jest, JUnit5, xUnit, Google Test
- Mock Strategies: Only mock external boundaries, not internal logic
- Coverage Requirements: 80%+ with meaningful assertions
When Loaded
This skill is automatically injected when working with:
/cc-best:dev— Implementation with teststdd-guideagent — Test-driven development guidancebuild-error-resolveragent — Fixing test failures
Key Rules
- Tests first — Write failing test before implementation
- AAA pattern — Arrange, Act, Assert in every test
- No shared mutable state — Each test is independent
- Descriptive names —
test_<feature>_<scenario>_<expected>