Angular2でHTTPリクエストのテスト

Angular2 v2.0.0 でのテストの書き方が検索してもあまり見つからなかった。

/* tslint:disable:no-unused-variable */

import {TestBed, async, inject} from '@angular/core/testing';
import {ApiService} from './api.service';
import {HttpModule, BaseRequestOptions, Http, Response, ResponseOptions} from "@angular/http";
import {MockBackend, MockConnection} from "@angular/http/testing";

import {User} from "./user";

describe('Service: Api', () => {

  beforeEach(() => {
    TestBed.configureTestingModule({
      imports: [HttpModule],
      providers: [ApiService, {
        provide: Http,
        useFactory: (backend, options) => new Http(backend, options),
        deps: [MockBackend, BaseRequestOptions]
      }, MockBackend, BaseRequestOptions]
    });
  });

  it('userInfo', async(inject([MockBackend, ApiService], (backend: MockBackend, service: ApiService) => {

    backend.connections.subscribe((conn: MockConnection) => {
      let ops = new ResponseOptions({body: {name: 'kyusyukeigo'}});
      conn.mockRespond(new Response(ops));
    });

    service.getUser().subscribe((user: User) => {
      expect(user).not.toBeNull();
      expect(user.name).toBe('kyusyukeigo');
    });

  })));
});

参考: http://stackoverflow.com/questions/39599084/test-angular-2-0-0-component-with-http-request