Vitest Pattern

Fast, modern test runner configuration for Next.js applications with TypeScript, React Testing Library, and built-in coverage reporting.

What's Included#

• Vitest configuration with jsdom environment and path aliases
• Setup file with React Testing Library cleanup and Next.js module mocks
• Unit testing for utility functions and business logic
• React component testing with render, screen queries, and async waitFor
• Server Action and custom hook testing patterns

Usage#

Via CLI#

Via AI Assistant#

Ask your AI assistant:

• "Use the Vitest pattern from Bootspring"
• "Apply the Bootspring Vitest pattern to my project"

Key Considerations#

• Enable globals: true in config for cleaner test files without explicit imports
• Mock Next.js modules (next/navigation, next/cache) in the setup file
• Use cleanup() in afterEach to prevent DOM state leaking between tests
• Use waitFor and findBy queries for components with async operations
• Keep tests fast by mocking slow dependencies like databases and external APIs

Related Patterns#

• Unit Testing - Unit testing best practices
• Component Testing - React component testing
• Mocking - Mocking strategies
• Coverage - Code coverage setup