Angular单元测试:如何模拟服务器发送的事件

import { TestBed, inject } from '@angular/core/testing';
import { HttpClientTestingModule, HttpTestingController } from '@angular/common/http/testing';

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

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

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

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

  it('should simulate server events', inject([YourService], (service: YourService) => {
    const mockResponse = { data: 'mock data' };

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

    const req = httpTestingController.expectOne('http://example.com/api/data');
    expect(req.request.method).toEqual('GET');

    req.flush(mockResponse);
  }));
});