Testing Library

About Testing Library

Testing Library is a family of testing utilities for UI code, designed to query DOM nodes the way users would find them rather than relying on implementation details. This approach aims to keep tests stable across refactors, since tests only fail when the application's behavior changes rather than its internal implementation.

The library provides built-in selectors that promote accessible markup by finding elements the same way assistive technologies and users do. It is used with a range of frontend frameworks and testing tools, including React, Vue, Angular, Svelte, Preact, ReasonReact, and React Native, as well as testing tools such as Cypress, Puppeteer, TestCafe, and Nightwatch.

The project is open source, maintained by Kent C. Dodds and contributors, with documentation, examples, and community support available through Stack Overflow and Discord.

Key features

• Query DOM elements the same way users find them, favoring accessible selectors
• Avoids testing implementation details so refactors don't break tests
• Family of libraries with bindings for React, Vue, Angular, Svelte, Preact, ReasonReact, and React Native
• Integrates with testing tools like Cypress, Puppeteer, Testcafe, and Nightwatch

Frequently asked questions