• import React from 'react'; import { toBeInTheDocument } from '@testing-library/jest-dom'; import { render, waitForElement, getByTestId...
  • jest-dom is a companion library for Testing Library that provides custom DOM element matchers for Jest. ... yarn add --dev @testing-library/jest-dom.
  • React Testing Library. ... jest-dom is a library that extends Jest using custom matchers in order to make assertions on DOM elements easier.
  • 1. Render a React component for testing. 2. Use jest-dom for improved assertions. 3. Use dom-testing-library to write more maintainable React tests.
  • This solution. The @testing-library/jest-dom library provides a set of custom jest matchers that you can use to extend jest.
    • Issues:
      88
    • Last commit:
      10 June 2024
  • This solution. The @testing-library/jest-dom library provides a set of custom jest matchers that you can use to extend jest.
  • Optimize DOM Testing using React Testing Library for enhanced accuracy, maintainability, and precise UI targeting with specific queries and options.
  • React Testing Library helps you with user-focused integration testing, while Jest DOM provides useful matchers for DOM element assertions within those tests.
  • Jest DOM is an extension of Jest testing framework. Learn to run Jest tests using custom matchers, & test React App using Jest with React testing library.
  • npm install --save-dev @testing-library/react @testing-library/jest-dom. ... this means that we are importing everything from @testing-library/jest-dom package.
  • module 2 | import {render, screen} from '@testing-library/react'; 3 | import '@testing-library/jest-dom'; > 4 | import Layout from '@theme/Layout'
  • If you'd like to assert, and manipulate your rendered components you can use @testing-library/react, Enzyme, or React's TestUtils.
  • We imported all dependencies needed to test this component. Jest DOM - to extend jest matchers. render, cleanup, fireEvent - React Testing Library utilities.
  • The react-test-renderer library allows you to render React components as JavaScript objects without using the DOM which improves performance of these tests.