How does it improve test quality?

By enforcing the AAA (Arrange-Act-Assert) pattern and providing strategies for test isolation and meaningful behavior-driven testing.

Does this skill provide code for specific test patterns?

Yes, it provides implementation patterns for the Testing Pyramid, ensuring a healthy balance of unit, integration, and E2E tests.

What testing frameworks does this skill support?

It supports major industry standards including Jest, Vitest, React Testing Library, Supertest, Playwright, and Cypress.

Can it help with backend API testing?

Absolutely. It includes specific patterns for testing NestJS controllers and services, including database interaction and authentication mocking.

Testing Expert

Name: Testing Expert
Author: shipshitdev

byshipshitdev

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Security & Testing

Implements robust testing strategies for React, Next.js, and NestJS applications using industry best practices and modern frameworks.

The Testing Expert skill transforms Claude into a senior QA and testing lead, providing deep expertise in building reliable test suites for modern web applications. It offers standardized patterns for unit, integration, and end-to-end testing using tools like Vitest, React Testing Library, and Playwright. By enforcing the Arrange-Act-Assert (AAA) pattern and defining clear coverage targets, this skill ensures that your code remains maintainable and error-free across the entire development lifecycle, from frontend components to backend API endpoints.

Key Features

0110 GitHub stars

02Full-stack coverage for React, Next.js, and NestJS environments

03Guidance on achieving high-quality branch and line coverage

04Implementation of the AAA (Arrange-Act-Assert) testing pattern

05Automated setup for Vitest, Jest, Playwright, and Cypress

06Advanced mocking strategies for external dependencies and databases

Use Cases

01Setting up end-to-end user flow testing for Next.js applications

02Generating unit tests for complex NestJS services and controllers

03Refactoring existing tests to improve speed, isolation, and reliability

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add shipshitdev/library testing-expert

For use in Claude.ai and ChatGPT

Download Skill