在角5测试底漆手风琴时未触发开启功能

当我测试部件时,p-accordion的开启功能没有被触发。open标志在onOpen函数中设置,工作正常,但在测试组件时未被调用。知道为什么吗?

it('should set open to -1', fakeAsync(() => {
    const accordion = element.query(By.css('a#ui-accordiontab-0'));
    accordion.nativeElement.click();
    expect(component.open).toEqual(-1);
  }));

Html文件

<p-accordion [activeIndex]="open" (onOpen)="setOpen($event)" >
            <p-accordionTab>
                ...
            </p-accordionTab>
</p-accordion>