reactjs-id/src/setupTests.js

A function that generates unique identifiers which can be used when mapping through list of items in React.Js

// jest-dom adds custom jest matchers for asserting on DOM nodes.
// allows you to do things like:
// expect(element).toHaveTextContent(/react/i)
// learn more: https://github.com/testing-library/jest-dom
import '@testing-library/jest-dom';