languagesServiceMockBackend.spec.ts

languagesServiceMockBackend.spec.ts

describe('MockBackend: LanguagesServiceHttp', () => {
  let mockbackend, service;

  //setup
  beforeEach(() => {
    TestBed.configureTestingModule({
      imports: [ HttpModule ],
      providers: [
        LanguagesServiceHttp,
        { provide: XHRBackend, useClass: MockBackend }
      ]
    })
  });
    
  beforeEach(inject([LanguagesServiceHttp, XHRBackend], (_service, _mockbackend) => {
    service = _service;
    mockbackend = _mockbackend;
  }));

  //specs
  it('should return mocked response (sync)', () => {
    let response = ["ru", "es"];
    mockbackend.connections.subscribe(connection => {
      connection.mockRespond(new Response(new ResponseOptions({
        body: JSON.stringify(response)
      }));
    });
    service.get().subscribe(languages => {
      expect(languages).toContain('ru');
      expect(languages).toContain('es');
      expect(languages.length).toBe(2);
    });
  });  
})