[Unit Testing] Node testing: Test api Get request

Using mocha:

  "devDependencies": {
    "should": "^5.2.0",
    "supertest": "^0.15.0"
  }

process.env.A127_ENV = 'test';
var should = require('should');
var request = require('supertest');

// uncomment this to get server to start automatically when test starts
var server = require('../../../app');

// var target = '127.0.0.1:10010';

describe('Return translations with parameter fi via GET /languages?lang=fi', function() {
  it('should respond with an json object containing all the translations for given language', function(done) {
    request(server)
    .get('/languages?lang=fi')
    .set('Accept', 'application/json')
    .set('Content-Type', 'application/json')
    .set('Authorization', 'Bearer test_token')
    .expect(200)
    .end(function(err, res) {
      should.not.exist(err);
      should.exist(res.body.languageNames);
      should.exist(res.body.header);
      should.exist(res.body.masthead);
      should.exist(res.body.phoneCard);
      should.exist(res.body.recommendation);
      should.exist(res.body.footer);
      done();
    });
  });
});

describe('Try to get translations with parameter 8 via GET /languages?lang=8', function() {
  it('should respond with 404 and message language not found', function(done) {
    request(server)
    .get('/languages?lang=8')
    .set('Accept', 'application/json')
    .set('Content-Type', 'application/json')
    .set('Authorization', 'Bearer test_token')
    .expect(404)
    .end(function(err, res) {
      should.not.exist(err);
      should.exist(res.body.message);
      res.body.message.should.equal("language not found");
      done();
    });
  });
});

describe('helps api test', function() {
    it('should return helps data when router is: GET: /api/helps', function(done) {
        request(server)
            .get('/api/helps')
            .set('Accept', 'application/json')
            .set('Content-Type', 'application/json')
            .set('Authorization', 'Bearer test_token')
            .expect(200)
            .end(function(err, res) {
                should.not.exist(err);
                should.exist(res.body.helpEntries);
                done();
            });
    });
});