“ReferenceError: document is not defined” when trying to test a create-react-app project

Question

This is my __tests__/App.js file:

import React from \'react\';
import ReactDOM from \'react-dom\';
import App from \'../src/containers/App\';

it(\'         


        

Answer 1

Placing the comment at the top of your unit-test source

/**
 * @jest-environment jsdom
 */

signals jest to mock document and window.