jest_after_env_setup.js

/*
 * Used for global imports before each test file is run (but after the Jest Environment is set up)
 * https://jestjs.io/docs/configuration#setupfilesafterenv-array
 */

// React
import React from "react";
global.React = React;

// Jest dom (testing env)
import "@testing-library/jest-dom";

// Routes
window.Routes = global.Routes = require("./app/javascript/routes");

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

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