Angular 7:如何仅访问/发送来自测试用例的HTTP响应的正文部分

import { TestBed, async } from '@angular/core/testing';
import { HttpClientTestingModule, HttpTestingController } from '@angular/common/http/testing';
import { YourService } from './your.service';

describe('YourService', () => {
  let service: YourService;
  let httpMock: HttpTestingController;

  beforeEach(() => {
    TestBed.configureTestingModule({
      imports: [HttpClientTestingModule],
      providers: [YourService]
    });
    service = TestBed.inject(YourService);
    httpMock = TestBed.inject(HttpTestingController);
  });

  afterEach(() => {
    httpMock.verify();
  });

  it('should get response body', () => {
    const mockResponse = { name: 'John' };

    service.getData().subscribe(response => {
      expect(response).toEqual(mockResponse);
    });

    const mockRequest = httpMock.expectOne('/api/data');
    mockRequest.flush(mockResponse);

    expect(mockRequest.request.method).toBe('GET');
  });
});