Test Automation Skill | Agent Skills

Test Automation

Create comprehensive test suites following the testing pyramid.

When to Use

Setting up tests for new code
User asks to "add tests" or "improve coverage"
Before refactoring (add tests first)
Implementing CI/CD test pipelines

Testing Pyramid

    /\        E2E (few, critical paths)
   /  \       Integration (moderate)
  /____\      Unit (many, fast)

Test Structure

Unit Tests

Test individual functions/methods
Mock external dependencies
Fast execution (<100ms per test)
High coverage (>80%)

Integration Tests

Test component interactions
Use test databases/containers
Moderate execution time
Cover critical integrations

E2E Tests

Test complete user flows
Use Playwright/Cypress
Slowest execution
Cover happy paths only

Test Patterns

// Arrange-Act-Assert
describe("UserService", () => {
  it("should create user with valid data", async () => {
    // Arrange
    const userData = { name: "Test", email: "test@example.com" };

    // Act
    const result = await userService.create(userData);

    // Assert
    expect(result.id).toBeDefined();
    expect(result.name).toBe("Test");
  });
});

Output

Test files with clear naming
Mock/stub implementations
Test data factories
Coverage configuration
CI pipeline integration

Examples

Input: "Add tests for the auth module" Action: Analyze auth module, create unit tests for functions, integration tests for flows

Input: "Set up testing for this project" Action: Detect framework, configure test runner, create example tests, add CI config

Agent Skills: Test Automation

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