CdkDragDrop单元测试事件

import { TestBed, ComponentFixture } from '@angular/core/testing';
import { CdkDragDrop, CdkDragStart, CdkDragEnter, CdkDragExit, CdkDragDropContainer } from '@angular/cdk/drag-drop';
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();
  });

  it('should handle drag and drop events', () => {
    const dragStartEvent = new CdkDragStart();
    const dragEnterEvent = new CdkDragEnter(new CdkDragDropContainer());
    const dragExitEvent = new CdkDragExit(new CdkDragDropContainer());
    const dragDropEvent = new CdkDragDrop(new CdkDragDropContainer(), new CdkDragDropContainer(), null, null);

    // 模拟拖动开始事件
    component.onDragStarted(dragStartEvent);
    expect(component.dragStarted).toBe(true);

    // 模拟拖动进入事件
    component.onEntered(dragEnterEvent);
    expect(component.entered).toBe(true);

    // 模拟拖动离开事件
    component.onExited(dragExitEvent);
    expect(component.exited).toBe(true);

    // 模拟拖动放置事件
    component.onDropped(dragDropEvent);
    expect(component.dropped).toBe(true);
  });
});