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jsdom VS react-testing-library

Compare jsdom VS react-testing-library and see what are their differences

jsdom logo jsdom

A JavaScript implementation of various web standards, for use with Node.js - jsdom/jsdom

react-testing-library logo react-testing-library

[`React Testing Library`][gh] builds on top of `DOM Testing Library` by adding
  • jsdom Landing page
    Landing page //
    2023-08-29
  • react-testing-library Landing page
    Landing page //
    2022-08-21

jsdom features and specs

  • Browser-like Environment
    jsdom provides a virtual representation of the browser's DOM environment, which allows developers to run scripts that usually require a browser.
  • Node.js Integration
    Being a Node.js library, jsdom can be easily integrated into server-side applications, enabling server-side DOM manipulation.
  • Testing Facilitation
    jsdom is commonly used in testing frameworks to simulate browser environments, allowing for headless testing of front-end code.
  • Standard-compliant
    jsdom strives to be compliant with web standards, which ensures consistent behavior with real browser environments.
  • Rich API
    It provides a rich set of APIs that mimic the browser DOM, making it comprehensive for developers needing browser-like functionality.

Possible disadvantages of jsdom

  • Performance Overhead
    jsdom can be slower than real browser environments because it runs in Node.js and not in a optimized browser engine.
  • Limited Browser Features
    While jsdom supports many DOM features, it might not support all the modern APIs and features available in the latest browsers.
  • Resource Intensive
    Running multiple jsdom instances can be resource-intensive, which may not be ideal for applications with large-scale DOM manipulation.
  • JavaScript Only
    Being specific to JavaScript and Node.js, jsdom is not suitable for developers working primarily in other programming environments.
  • Complexity in Setup
    Setting up and configuring jsdom for specific use cases can be more complex compared to some alternatives, requiring more effort from the developer.

react-testing-library features and specs

  • Focused on user-centric testing
    React Testing Library encourages tests that closely resemble how users interact with an application. This approach makes tests more reliable and meaningful.
  • Reduces coupling to implementation details
    By encouraging developers to interact with components via the DOM, the library minimizes dependencies on component internals, making tests less prone to breaking from refactors.
  • Improved test readability
    Tests written with React Testing Library are generally easier to read and understand because they focus on what the user sees and does, rather than the internal logic of the components.
  • Comprehensive query options
    The library provides a wide range of query methods (e.g., getByText, getByRole), which makes it easy to select elements in ways that resemble how users think.
  • Active community and well-maintained
    React Testing Library has a strong, active community and it's maintained by experienced developers who keep the library up-to-date with React's evolution.

Possible disadvantages of react-testing-library

  • Limited support for non-DOM testing
    The library is heavily focused on DOM interactions, making it less suited for testing non-DOM logic or scenarios that don't involve user interactions.
  • Can be slower
    Tests that involve the DOM can be slower compared to tests that interact directly with component methods and state, which can lead to longer test execution times.
  • Learning curve for traditional testers
    Developers who are used to testing implementation details with other tools (like Enzyme) might find it challenging to adjust to the user-centric approach advocated by React Testing Library.
  • Potential for less granular control
    Because the library encourages testing through the UI, developers might find it harder to test specific, isolated internal behaviors of components that aren't directly visible to users.
  • Dependencies on browser APIs
    The library's reliance on browser APIs means that tests may behave differently in different environments or may require polyfills for certain features, leading to potential inconsistencies.

Analysis of react-testing-library

Overall verdict

  • React Testing Library is highly regarded in the React community for its simplicity and effective approach to testing React components. Itโ€™s known for promoting good testing practices that result in reliable and maintainable code.

Why this product is good

  • React Testing Library is considered good because it encourages testing practices that closely resemble how users interact with the application. It emphasizes testing components from the user's perspective and discourages testing implementation details, which can lead to more robust and maintainable tests.

Recommended for

  • Developers looking to improve the reliability of their React applications
  • Teams interested in adopting user-centric testing methodologies
  • Projects that prioritize maintainable and understandable test code

jsdom videos

JSDom & Enzyme: Different Test Styles for React Apps - Dan La Feir @ ReactNYC

More videos:

  • Review - Frontend Pairing - Discovering missing JSDOM APIs that didnโ€™t allow to test Toast UI in jest

react-testing-library videos

React unit testing with Jest & React-testing-library

More videos:

  • Review - Test a React Component that renders a list with react-testing-library

Category Popularity

0-100% (relative to jsdom and react-testing-library)
Development
100 100%
0% 0
Developer Tools
11 11%
89% 89
Software Development
100 100%
0% 0
Javascript UI Libraries
0 0%
100% 100

User comments

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Social recommendations and mentions

Based on our record, react-testing-library should be more popular than jsdom. It has been mentiond 137 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

jsdom mentions (32)

  • Proton: Pluggable SSR + DOM | Or How I implemented better SSR from scratch
    Nah, I took a third path - looking for alternatives to JSDOM... And I found it - happy-dom. - Source: dev.to / over 1 year ago
  • The Future of Htmx
    We do have pseudo-browsers written in pure js that you can theoretically use: https://github.com/jsdom/jsdom but they're about as reliable as you can expect: it's difficult to keep up the pace with the big three (or two) on standards compliance, and they usually don't even try. So the only reliable solution is a headless Chromium, Firefox, and/or WebKit-based noname browser like the sibling says.... - Source: Hacker News / over 1 year ago
  • Go-DOM - A headless browser written in Go.
    Internally the test starts an HTTP server. Because the this runs in the test process, mocking and stubbing of business logic is possible. The test use jsdom to communicate with the HTTP server; which both parse the HTML response into a DOM, but also executes client-side script in a sandbox which has been initialised, e.g. With window as the global scope.3. - Source: dev.to / over 1 year ago
  • Excluding Dependencies: Bundling for Node and the Browser
    For example, I needed to parse an HTML string into a DOM Document. The browser already supports the DOMParser class, which is, unfortunately, not available in Node.js. Here, I have to fall back on JSDOM, which also exposes this class. - Source: dev.to / about 2 years ago
  • Migrating from Jest to Vitest for your React Application
    If you happen to be using React Testing Library in your project, you'll need to keep the jsdom dev dependency installed. - Source: dev.to / over 2 years ago
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react-testing-library mentions (137)

  • Test-Driven Development for Building User Interfaces
    React Testing Libraryโ€™s core philosophy is that we should write our tests in such a way that we simulate user behavior. By testing what the user can actually do, our tests focus less on implementation details and more on the actual user interface, which leads to less brittle tests and a more reliable test suite. - Source: dev.to / 5 months ago
  • Chaos-Driven Testing for Full Stack Apps: Integration Tests That Break (and Heal)
    In the main branch, we set up Vitest as the test runner and React Testing Library for rendering the component and simulating user interactions. We also set up MSW to intercept the network requests and return mock responses. - Source: dev.to / 10 months ago
  • ๐Ÿš€ 9 Libraries to Boost Your Productivity as a React Developer
    React Testing Library (RTL) provides lightweight utilities built on top of react-dom and react-dom/test-utils, designed to promote testing through user interactions rather than component internals. Instead of working with component instances, RTL encourages querying and asserting against actual DOM nodes, just like real users would. This approach improves test reliability and pushes developers toward writing more... - Source: dev.to / 12 months ago
  • Best Practices for React Applications
    Testing ensures code reliability and maintainability. Jest, Vitest and React Testing Library are standard tools for unit and integration testing. Unit tests verify individual components, while integration tests ensure features work together. For example, testing a TodoList component might involve:. - Source: dev.to / about 1 year ago
  • Migrating from AngularJS to React
    Additionally, I wrote Jest and Enzyme unit tests to demonstrate how to go about unit testing the components, as test driven development (TDD) is another methodology my organization subscribes to. Jest is a unit testing framework that actually shipped with React if you use the Create React App CLI to make a new React project. And at the time, Enzyme was created by Airbnb and added additional functionality to Jest... - Source: dev.to / over 1 year ago
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What are some alternatives?

When comparing jsdom and react-testing-library, you can also consider the following products

Playwright - Playwright is automation software for Chromium, Firefox, Webkit using the Node.js library having a single API in place.

Jest - Jest is a delightful JavaScript Testing Framework with a focus on simplicity.

Vitest - A blazing fast unit test framework powered by Vite

Vite - Next Generation Frontend Tooling

Enzyme - Enzyme is a JavaScript testing utility for React.

Storybook - Storybook is an open source tool for developing UI components in isolation for React, Vue, and Angular. It makes building stunning UIs organized and efficient.