如何在Angular中测试管道中的多个请求？

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

describe('YourPipe', () => {
  let pipe: YourPipe;
  let httpTestingController: HttpTestingController;

  beforeEach(async(() => {
    TestBed.configureTestingModule({
      imports: [HttpClientTestingModule],
      providers: [YourPipe]
    }).compileComponents();

    pipe = TestBed.inject(YourPipe);
    httpTestingController = TestBed.inject(HttpTestingController);
  }));

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

  it('should transform multiple requests', () => {
    // 创建多个请求
    const request1 = httpTestingController.expectOne('url1');
    const request2 = httpTestingController.expectOne('url2');

    // 模拟响应
    request1.flush('response1');
    request2.flush('response2');

    // 断言管道的转换结果
    expect(pipe.transform('data')).toBe('response1response2');
  });
});