Enzyme expects an adapter to be configured

Question

I created a new React application by create-react-app and I wanted to write a unit test to a component named \"MessageBox\" that I created in the application. This is the un

Answer 1

For me when using React with create-react-app I had to make sure the file name was correct. The file has to be src/setupTests.js with an s at the end of Tests.

Inside setupTests.js is the following:

import { configure } from "enzyme";
import Adapter from "enzyme-adapter-react-16";

configure({ adapter: new Adapter() });

When running npm run test it auto finds the setupTests.js file. There is no need to import it into each test file.