JavaScript Testing Patterns

About

This skill provides specialized guidance for architecting and implementing comprehensive test suites in JavaScript and TypeScript projects. It offers ready-to-use patterns for modern frameworks like Jest and Vitest, covering everything from pure function unit tests and class-based service testing to complex asynchronous operations and module mocking. By integrating best practices for Test-Driven Development (TDD) and dependency injection, it helps developers build maintainable, bug-resistant codebases with high test coverage and reliable CI/CD integration.

Key Features

• Implementation strategies for Unit, Integration, and E2E tests
• Dependency injection patterns to improve code testability
• Advanced mocking patterns for modules and external APIs
• Test-Driven Development (TDD) and BDD workflow guidance
• Configuration templates for Jest and Vitest environments
• 0 GitHub stars

Use Cases

• Setting up a new testing infrastructure for a TypeScript project
• Creating reliable integration tests for APIs and services
• Refactoring legacy code with robust test coverage and mocking