如何对从服务订阅EventEmitter的angular组件进行单元测试？

import { ComponentFixture, TestBed } from '@angular/core/testing';
import { MyComponent } from './my.component';
import { MyService } from './my.service';

describe('MyComponent', () => {
  let component: MyComponent;
  let fixture: ComponentFixture<MyComponent>;
  let myService: MyService;

  beforeEach(async () => {
    await TestBed.configureTestingModule({
      declarations: [MyComponent],
      providers: [MyService],
    }).compileComponents();
  });

  beforeEach(() => {
    fixture = TestBed.createComponent(MyComponent);
    component = fixture.componentInstance;
    myService = TestBed.inject(MyService);
    fixture.detectChanges();
  });

  it('should subscribe to EventEmitter', () => {
    spyOn(myService.myEvent, 'subscribe');
    component.ngOnInit();
    expect(myService.myEvent.subscribe).toHaveBeenCalled();
  });

  it('should handle emitted event', () => {
    spyOn(component, 'handleEvent');
    component.ngOnInit();
    myService.myEvent.emit('test');
    expect(component.handleEvent).toHaveBeenCalledWith('test');
  });

  it('should do something in handleEvent', () => {
    // Test the behavior of handleEvent method
  });

  afterEach(() => {
    fixture.destroy();
  });
});