What is Enzyme test React?

Posted on by Muna Meyer

What is Enzyme test React?

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.

How do you run an Enzyme test in React?

Try it out NOW!

  1. Step 1: Add dependencies. Follow the react-basics tutorial and run the following command afterwards: npm install –dev jest enzyme enzyme-adapter-react-16 @types/jest`
  2. Step 2: Add Enzyme Adapter for React.
  3. Step 3: Connect the Setup Test.
  4. Step 4: Add and Run Tests.

What is Enzyme used for in testing?

Enzyme markers are blood tests that analyze specific enzyme activity in the body. Some inherited diseases or conditions can cause these enzymes to stop working or be less efficient. Monitoring the rise or fall of enzyme levels can aid in the diagnosis of a variety of conditions.

Can you use React testing library with Enzyme?

If you’d like to assert, and manipulate your rendered components you can use react-testing-library, Enzyme, or React’s TestUtils. The following two examples use react-testing-library and Enzyme.

Can I use enzyme with React 17?

If you have React version 17, you can use this unofficial adapter for React 17 for enzyme. // src/setupTests. js import { configure } from ‘enzyme’; import Adapter from ‘@wojtekmaj/enzyme-adapter-react-17’; configure({ adapter: new Adapter() });

What is enzyme in react native?

As of v0. 18, React Native uses React as a dependency rather than a forked version of the library, which means it is now possible to use enzyme’s shallow with React Native components. To use enzyme to test React Native, you currently need to configure an adapter, and load an emulated DOM.

How do you test React components with Jest and enzymes?

First we need to install some packages which we’ll be using to test our React components:

  1. npm i -D enzyme enzyme-adapter-react-16 jest.
  2. npm test.
  3. “scripts”: { …, “test”: “jest –verbose”,
  4. const { performSearch } = wrapper.find(Search).props()
  5. const performSearch = wrapper.find(Search).props(‘performSearch’)

Does React 17 work with enzymes?

Back in August 2020, React 17 Release Candidate came out. Shortly after, an issue has been raised in Enzyme repository to add support for React 17. Immediately after, @layershifter has opened a PR adding an official enzyme-adapter-react-17 .

Can I use Enzyme with React 17?

Should I learn Enzyme or React testing library?

So using enzyme, we are not bound to test the internals but we can test the DOM too. Whereas in React Testing Library, it enforces us to test the component according to the DOM and doesn’t provide us any means to gain access to the internals of the component.

Is Enzyme React dead?

Enzyme, a popular utility to test React components, is dead. It’s time to move on. For a long time, Enzyme has been the 1st choice when it comes to testing React applications, despite of how bumpy the road to Enzyme React 16 support was. Even today, 1/3 of React apps are still being tested using Enzyme!