如何在Angular中对子组件进行spyOn？

import { spyOn } from 'jasmine';
import { ChildComponent } from './child.component';

let childComponent: ChildComponent;

beforeEach(() => {
  childComponent = new ChildComponent();
  spyOn(childComponent, 'methodName');
});

it('should call the method in child component', () => {
  // 执行操作，触发子组件中的方法调用
  childComponent.someMethod();

  // 断言监视函数被调用
  expect(childComponent.methodName).toHaveBeenCalled();
});