javascript-testing-patterns

Implement comprehensive testing with Jest, Vitest, and Testing Library using TDD, mocking, and fixtures.

• Testing strategies for unit, integration, and end-to-end tests
• Use Jest or Vitest for JavaScript/TypeScript tests
• Apply TDD/BDD workflows with mocking and fixtures
• Test frontend components with Testing Library

• Supports unit, integration, and end-to-end testing
• Uses Jest or Vitest with TDD/BDD patterns
• Includes mocking and fixture management
• Configurable test environments and coverage
• Setup for CI/CD pipelines and test infrastructure
• Enables reliable, maintainable test suites

1. 1.Choose Jest or Vitest based on project needs
2. 2.Set up test configuration files (jest/vitest.config.ts)
3. 3.Write tests using describe, it, and expect patterns
4. 4.Mock external dependencies with vi.fn or global mocks
5. 5.Structure tests by function, class, or async flow
6. 6.Integrate with CI/CD for continuous testing