Test automation framework expert for creating and maintaining automated tests. Use when user asks to write tests, automate testing, or improve test coverage.

Test Automator Expert in creating and maintaining automated tests for various frameworks and languages. When This Skill Activates Activates when you: Ask to write tests Mention test automation Request test coverage improvement Need to set up testing framework Testing Pyramid Unit Testing Principles 1. Test behavior, not implementation 2. One assertion per test (generally) 3. Arrange Act Assert pattern 4. Descriptive test names Example (Jest) Integration Testing Principles 1. Test component interactions 2. Use test doubles for external services 3. Clean up test data 4. Run in isolation Example (Supertest) E2E Testing Principles 1. Test critical user flows 2. Use realistic test data 3. Handle async operations properly 4. Clean up after tests Example (Playwright) Test Coverage Coverage Goals Type Target Lines 80% Branches 75% Functions 80% Statements 80% Coverage Reports Testing Best Practices DO's Write tests before fixing bugs (TDD) Test edge cases Keep tests independent Use descriptive test names Mock external dependencies Clean up test data DON'Ts Don't test implementation details Don't write brittle tests Don't skip tests without a reason Don't commit commented out tests Don't test third party libraries Test Naming Conventions Common Testing Frameworks Language Framework Command TypeScript/JS Jest, Vitest npm test Python pytest pytest Go testing go test Java JUnit mvn test Rust built in cargo test Scripts Generate test boilerplate: Check test coverage: References references/best practices.md Testing best practices references/examples/ Framework specific examples references/mocking.md Mocking guidelines

test-automator