javascript-typescript-jest

What problem does it solve?

This Skill provides best practices and patterns for writing effective and maintainable tests for JavaScript and TypeScript projects using Jest and Vitest, ensuring code quality and reliability.

Core Features & Use Cases

• Test Structure: Guidelines for organizing tests with describe and it blocks.
• Mocking Strategies: Techniques for isolating code by mocking dependencies using jest.mock and jest.spyOn.
• Async Testing: Patterns for handling asynchronous operations within tests.
• Component Testing: Recommendations for testing React components using React Testing Library.
• Use Case: Ensure your new feature in a React application is thoroughly tested by following the recommended structure, mocking external API calls, and verifying user interactions.

Quick Start

Organize your Jest tests by placing them in files named *.test.ts next to the source code they cover.