How does it assist with TDD?

It provides the structure and boilerplate for writing tests before implementation, ensuring code meets requirements from the start and facilitating safe refactoring.

Does it cover mocking external services?

Absolutely. It provides patterns for mocking modules (like nodemailer or axios), global fetch, and using dependency injection to isolate code from external side effects.

Can this skill help with frontend component testing?

Yes, it includes patterns for using Testing Library to verify React, Vue, and other UI component behaviors through unit and integration tests.

Which testing frameworks does this skill support?

It primarily supports Jest and Vitest, including configuration and implementation patterns for both environments in JavaScript and TypeScript projects.

JavaScript Testing Patterns

Name: JavaScript Testing Patterns
Author: HermeticOrmus

byHermeticOrmus

보안 및 테스팅

Implements robust testing strategies for JavaScript and TypeScript applications using modern frameworks like Jest and Vitest.

소개

This skill provides Claude with advanced expertise in setting up and maintaining high-quality test suites for JavaScript and TypeScript projects. It offers standardized patterns for unit, integration, and end-to-end testing, covering critical techniques such as mocking external dependencies, testing asynchronous functions, and implementing test-driven development (TDD) workflows. Whether you are configuring Jest or Vitest for the first time or refactoring complex test suites to improve coverage and reliability, this skill ensures best practices are followed to create maintainable and resilient codebases.

주요 기능

0 GitHub stars
Advanced mocking patterns for modules and external APIs
Standardized Jest and Vitest configuration templates
Asynchronous testing and spy implementation for behavioral verification
Unit testing strategies for pure functions and complex classes
Dependency injection patterns to improve testability

사용 사례

Refactoring legacy code to include comprehensive unit and integration tests
Implementing Test-Driven Development (TDD) for new feature modules
Setting up a new testing infrastructure for a Vite or Node.js project

소개

주요 기능

0 GitHub stars
Advanced mocking patterns for modules and external APIs
Standardized Jest and Vitest configuration templates
Asynchronous testing and spy implementation for behavioral verification
Unit testing strategies for pure functions and complex classes
Dependency injection patterns to improve testability

사용 사례

Refactoring legacy code to include comprehensive unit and integration tests
Implementing Test-Driven Development (TDD) for new feature modules
Setting up a new testing infrastructure for a Vite or Node.js project