我需要什么？

• 测试，如果在移动的设备电容器App Plugin上，则调用removeAllListeners()函数。

我的应用程序组件中包含的内容：

ngOnDestroy(): void {
    if (Capacitor.isNativePlatform()) {
      App.removeAllListeners();
    }

    this.destroy$.next();
    this.destroy$.complete();
  }

我在单元测试中的做法
按照https://capacitorjs.com/docs/guides/mocking-plugins中的步骤，我创建了mock文件夹，并添加了我在AppComponent中使用的函数
然后我尝试实现测试：

describe('test ngOnDestroy', () => {
    beforeEach(fakeAsync(() => {
      spyOn(App, 'removeAllListeners');

      (App.removeAllListeners as any).and.returnValue(Promise.resolve());

      fixture.detectChanges();
      fixture.whenStable();
    }));

    it('should call App.removeAllListeners on mobile app', fakeAsync(() => {
      spyOn(Capacitor, 'isNativePlatform').and.returnValue(true);

      component.ngOnDestroy();

      fixture.detectChanges();
      fixture.whenStable();

      expect(Capacitor.isNativePlatform()).toBeTrue();
      // throw an error:
      // > Error: Expected spy removeAllListeners to have been called once. It was called 0 times.
      // expect(App.removeAllListeners).toHaveBeenCalledTimes(1);

      expect(App.removeAllListeners).toHaveBeenCalled();
    }));

    it('should not call App.removeAllListeners on web app', fakeAsync(() => {
      spyOn(Capacitor, 'isNativePlatform').and.returnValue(false);

      component.ngOnDestroy();

      fixture.detectChanges();
      fixture.whenStable();

      expect(Capacitor.isNativePlatform()).toBeFalse();
      expect(App.removeAllListeners).not.toHaveBeenCalled();
    }));
  });

日志中的错误

Error: Expected spy removeAllListeners to have been called.
        at <Jasmine>
        at UserContext.apply (src/app/app.component.spec.ts:120:38)
        at UserContext.fakeAsyncFn (node_modules/zone.js/dist/zone-testing.js:2046:34)
        at ZoneDelegate.invoke (node_modules/zone.js/dist/zone.js:400:1)

更新日期：

第二次测试成功！
谁能给予我一个正确的方向，它应该如何正确地进行测试？
谢谢你，谢谢你