testing

Implement testing strategies for TypeScript, React, and Next.js projects.

Updated Mar 27, 2026
One-click install
npx skills add https://github.com/Awais16/skills-vault --skill testing-awais16
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: testing
Source: https://github.com/Awais16/skills-vault/tree/main/skills/testing
Command: npx skills add https://github.com/Awais16/skills-vault --skill testing-awais16

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Testing strategies and patterns for TypeScript/React/Next.js. Use when: writing unit tests, integration tests, setting up Vitest/Jest/Playwright, testing React components, testing API routes, mocking dependencies, or establishing testing patterns.

Core Features & Use Cases

  • Comprehensive unit, integration, and end-to-end testing guidance across TS/React/Next.js.
  • Setup templates for Vitest, Jest, Playwright, testing-library, and MSW, plus mocking patterns.
  • Real-world examples and best-practices for component, hook, and API route tests, plus CI considerations.

Quick Start

Install and configure a complete testing setup for your TypeScript/React/Next.js project and run your first test suite.

Frequently Asked Questions about testing

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I set up Vitest and testing-library for a TypeScript and React project?

To set up Vitest and testing-library for a TypeScript React project, you need to install the frameworks, configure the test environment, and apply standardized patterns for unit and integration tests across your components.

What is the best way to mock API routes and dependencies in Next.js testing?

The best way to mock API routes and dependencies in Next.js testing is using MSW (Mock Service Worker) alongside configured mocking patterns to isolate components and simulate network responses during integration tests.

Can I use Playwright for end-to-end testing in an existing Next.js application?

Yes, you can use Playwright for end-to-end testing in an existing Next.js application. It provides comprehensive configuration templates and practical examples to standardize browser-based E2E test workflows.

Does this testing approach support both unit and integration tests for React hooks?

Yes, this testing approach supports both unit and integration tests for React hooks. It supplies real-world examples and best practices for testing hooks using Vitest and testing-library within your TypeScript codebase.

Why do I need MSW when writing integration tests for React components?

You need MSW when writing integration tests for React components to intercept network requests and mock API dependencies. This isolates the component logic from actual backend services, ensuring reliable and consistent test outcomes.