const apiUnderTest = require('../src');
const supertest = require('supertest');

const request = supertest.agent(apiUnderTest.listen());

describe('Hello World', () => {
  it('should say "Hello World"', (done) => {
    request
      .get('/')
      .expect(200)
      .expect('Hello World', done);
  });
});
@@ -300,8 +300,297 @@
  %7D);%0A%7D);
+%0A%0Adescribe('users', () =%3E %7B%0A  it('should insert a new user', (done) =%3E %7B%0A    request%0A      .post('/users')%0A      .field('username', 'Nicolas')%0A      .expect(200, done);%0A  %7D);%0A%0A  it('should retrieve a user', (done) =%3E %7B%0A    request%0A      .get('/users/1')%0A      .expect(200, done);%0A  %7D);%0A%7D);

Add two quick tests for users endpoint