Writing Effective Tests

When This Skill Activates

• Writing or modifying test files (*.test.*, *.spec.*, *_test.go, test_*.py)
• Setting up test infrastructure or test utilities
• Debugging flaky, brittle, or slow tests
• Deciding between unit, integration, and E2E tests
• Choosing when and how to use mocks, stubs, or fakes

Natural Language Triggers

• "add tests", "test coverage", "testing strategy", "write tests for", "how should I test"