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nextjs-testing

Set up Jest and React Testing Library for Next.js component and API route tests.

Updated Feb 5, 2026
Search Tags:#testing#jest#nextjs#unit-testing#integration-testing#react-testing-library
One-click install
npx skills add https://github.com/superchordate/github-copilot-skills --skill nextjs-testing
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: nextjs-testing
Source: https://github.com/superchordate/github-copilot-skills/tree/main/.github/skills/test-nextjs
Command: npx skills add https://github.com/superchordate/github-copilot-skills --skill nextjs-testing

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill helps developers quickly set up reliable tests for Next.js applications using Jest and React Testing Library, reducing debugging time and ensuring UI consistency.

Core Features & Use Cases

  • Setup Jest & RTL: Install and configure Jest, React Testing Library, and Next.js integration for both server and client components.
  • Mock Next.js Features: Provide practical patterns to mock router, image, and API routes in tests.
  • Test Types & Scenarios: Create unit tests for components and utilities, integration tests for pages and API routes, and end-to-end-ish patterns for server components.
  • Real-World Use Case: Example: add tests for a Next.js page that fetches data and renders loading states, error handling, and navigation.

Quick Start

Follow these steps to start testing a Next.js project:

  • Install testing dependencies: npm install -D jest @testing-library/react @testing-library/jest-dom @testing-library/user-event @types/jest
  • Create jest.config.ts integrating Next.js via next/jest
  • Add a setup file (e.g., jest.setup.ts) with RTL matchers
  • Example test import Page and verify a heading renders

Frequently Asked Questions about nextjs-testing

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

FAQPage Schema
How do I set up Jest and React Testing Library in a Next.js project?▼

You can configure Jest and React Testing Library by installing the required npm packages, creating a jest.config.ts using next/jest, and adding a setup file with RTL matchers to test Next.js components.

Can I test Next.js server components and API routes with Jest?▼

Yes, you can test Next.js server components and API routes with Jest and React Testing Library by applying provided testing patterns to mock router, image, and API routes within your integration tests.

What dependencies do I need to start unit testing a Next.js application?▼

Next.js unit testing requires installing jest, @testing-library/react, @testing-library/jest-dom, @testing-library/user-event, and @types/jest as npm development dependencies to run component tests.

How do I mock Next.js router and image components in integration tests?▼

Mocking Next.js router and image components in integration tests involves applying practical mocking patterns provided by the setup to isolate components and verify rendering and navigation behavior reliably.

Does this testing setup provide patterns for handling loading states and data fetching in Next.js?▼

Yes, the testing setup includes real-world use cases demonstrating how to test Next.js pages that fetch data, specifically verifying loading states, error handling, and navigation using Jest and React Testing Library.

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