Angular 第15角Cookie的单元测试用例

我已经为我的一个组件编写了测试用例.它涵盖了整个函数，但抛出了以下错误:

  Disconnected , because no message in 30000 ms.

或

 Some of your tests did a full page

header.component.ts个

import { Component, OnInit } from '@angular/core';
import { CookieService } from 'ngx-cookie-service';

@Component({
  selector: 'app-header',
  templateUrl: './header.component.html',
  styleUrls: ['./header.component.scss']
})
export class HeaderComponent implements OnInit {
  constructor(private cookieService:CookieService) {}

  ngOnInit(): void {}

  logout(): void {
    localStorage.clear();
    sessionStorage.clear();
    let cookie:any = this.cookieService.getAll();
    Object.keys(cookie)?.forEach((res:any) => {
        this.cookieService.delete(res, '/', '', true, 'None');
        document.cookie = `${res}=; expires=Thu, 01 Jan 1970 00:00:00 UTC; path=/;`;
    });
    window.location.href ='https://demo.demopreview.com/login/login.htm';
   }
}

header.component.spec.ts个

import { ComponentFixture, TestBed } from '@angular/core/testing';
import { HeaderComponent } from './header.component';
import { HttpClientModule } from '@angular/common/http';
import { CookieService } from 'ngx-cookie-service';

describe('HeaderComponent', () => {
  let component: HeaderComponent;
  let fixture: ComponentFixture<HeaderComponent>;
  let cookieService: CookieService;

  const mockWindow = { location: { href: '' } };
  beforeEach(async () => {
    await TestBed.configureTestingModule({
      declarations: [HeaderComponent],
      imports:[HttpClientModule],
      providers: [
        CookieService,
        { provide: 'Window', useValue: mockWindow }
      ]
    }).compileComponents();
  });

  beforeEach(() => {
    fixture = TestBed.createComponent(HeaderComponent);
    component = fixture.componentInstance;
    fixture.detectChanges();
    cookieService = TestBed.inject(CookieService);
  });

  afterEach(() => {
    localStorage.clear();
    sessionStorage.clear();
    document.cookie.split(";").forEach((c) => {
      document.cookie = c.replace(/^ +/, "").replace(/=.*/, "=;expires=" + new Date().toUTCString() + ";path=/");
    });
  });

  it('should create', () => {
    expect(component).toBeTruthy();
  });

  it('should call cookieService.delete for each cookie', () => {
    spyOn(cookieService, 'getAll').and.returnValue({ 'testCookie1': 'value1', 'testCookie2': 'value2' });
    spyOn(cookieService, 'delete');
    component.logout();
    expect(cookieService.delete).toHaveBeenCalledWith('testCookie1', '/', '', true, 'None');
    expect(cookieService.delete).toHaveBeenCalledWith('testCookie2', '/', '', true, 'None');
  });

});

它与任何版本问题无关.因为如果我删除这个测试用例，每个测试用例都会通过.