Main Glossary Enzyme




Enzyme is a JavaScript testing utility for React that makes it easier to test your React Components' output. You can also manipulate, traverse, and in some ways simulate runtime given the output. Enzyme's API is meant to be intuitive and flexible by mimicking jQuery's API for DOM manipulation and traversal.

Enzyme, created by Airbnb, adds some great additional utility methods for rendering a component (or multiple components), finding elements, and interacting with elements.

It must be installed in addition to tools already bundled with CRA.

Jest and Enzyme

  • Both Jest and Enzyme are specifically designed to test React applications, Jest can be used with any other JavaScript app but Enzyme only works with React.
  • Jest can be used without Enzyme to render components and test with snapshots, Enzyme simply adds additional functionality.
  • Enzyme can be used without Jest, however Enzyme must be paired with another test runner if Jest is not used.

As described, we will use:

  • Jest as the test runner, assertion library, and mocking library
  • Enzyme to provide additional testing utilities to interact with elements