text: import {expect} from 'chai';
  import jsdom from 'jsdom';
  import fs from 'fs';
  
  describe('Our first test', () => {
    it('should pass', () => {
      expect(true).to.equal(true);
    });
  });
  
  describe('index.html', () => {
    it('should have h1 that says Users', (done) => {
      const index = fs.readFileSync('./src/index.html', "utf-8"); // to hold file in memory
      jsdom.env(index, function(err, window) { // 'window' means virtual browser window
         const h1 = window.document.getElementsByTagName('h1')[0];
         expect(h1.innerHTML).to.equal("Users");
         done();
         window.close();
      });
    });
  });
  