const request = require('supertest');
const assert = require('assert');
 
request('http://localhost:3000')
  .get('/api/employee')
  .expect(200)
  .expect('Content-Type', 'application/json')
  .expect(function(res) {
    assert(res.body.hasOwnProperty('name'));
    assert(res.body.hasOwnProperty('city'));
  })
  .end(function(err, res) {
    if (err) throw err;
  });