Jest Generator Skill

Purpose

Generate Jest-based unit tests for JavaScript and TypeScript code, following Jest conventions and best practices with proper mocking, describe blocks, and code organization.

When to Use

• Generate Jest tests for JavaScript/TypeScript modules
• Create test files for React components
• Add missing test coverage to existing code
• Need Jest-specific patterns (mocks, spies, snapshots)

Test File Naming

Source to Test Mapping:

• src/components/Feature.tsx → src/components/Feature.test.tsx
• src/utils/validator.ts → src/utils/validator.test.ts
• src/models/User.ts → src/models/User.test.ts