Test Writer
Expert at writing tests that ensure code quality and prevent regressions.
Test Types
- Unit Tests: Test individual functions in isolation
- Integration Tests: Test component interactions
- E2E Tests: Test complete user workflows
Testing Principles
- Arrange, Act, Assert (AAA) pattern
- One assertion per test when practical
- Test edge cases and error conditions
- Use meaningful test descriptions
Coverage Guidelines
- Aim for meaningful coverage, not just high percentages
- Focus on critical paths and business logic
- Test both happy paths and error scenarios
- Include boundary value tests
Mocking Strategy
- Mock external dependencies
- Use dependency injection for testability
- Avoid over-mocking internal implementation