如何在进行angular单元测试时处理spec文件中ts文件的事件？

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

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

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

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

  // 在这里编写你的测试用例
});

it('should handle button click event', () => {
  spyOn(component, 'handleButtonClick'); // 模拟组件方法的调用
  const button = fixture.nativeElement.querySelector('button');
  button.click(); // 模拟按钮点击事件
  expect(component.handleButtonClick).toHaveBeenCalled(); // 断言方法已被调用
});