Angular 失败：意外值'；WidgetGeneralSettings'；由模块导入'；DynamicTestModule'；。请添加@NgModule注释

我正在尝试测试此组件，但出现了此错误

fdescribe('DateTimeWidgetComponent', () => {
  let component: DateTimeWidgetComponent;
  let fixture: ComponentFixture<DateTimeWidgetComponent>;
  beforeEach(async(() => {
    TestBed.configureTestingModule({
      declarations: [DateTimeWidgetComponent],
      imports: [FlexLayoutModule, WidgetGeneralSettings]
    })
      .compileComponents();
  }));

  title: string;
  backgroundColor: string;
  color: string;
  style: string;

}