npx create-react-app my-app
cd my-app
yarn install
yarn add -D enzyme enzyme-adapter-react-16 react-test-renderer
cd src
import { configure } from 'enzyme';
import Adapter from 'enzyme-adapter-react-16';
configure({ adapter: new Adapter() });
> setupTests.js
mkdir __tests__
NODE_PATH="src/" > .env
git init