Angular测试失败,无法在’XMLHttpRequest’上执行’send’

export class CellComponent implements OnInit {
  lines: Observable<Array<ILine>>;
  @Input() dep: string;
  @Input() embedded: boolean;
  @Input() dashboard: boolean;
  constructor(
    public dataService: CellService,private route: ActivatedRoute,private router: Router,private store: Store<AppStore>) {
  }
}

但是,一个简单的“应该创建”测试会引发这个神秘的错误……

NetworkError: Failed to execute ‘send’ on ‘XMLHttpRequest’: Failed to load ‘ng:///DynamicTestModule/module.ngfactory.js’.

所以我发现this问题,这表明问题是组件有@Input)_ params没有设置,但是,如果我修改我的测试如下：

it('should create',inject([CellComponent],(cmp: CellComponent) => {
    cmp.dep = '';
    cmp.embedded = false;
    cmp.dashboard = false;
    expect(cmp).toBeTruthy();
  }));

然后我仍然得到相同的问题,同样,如果我从组件中删除@Input()注释,仍然没有区别.我怎样才能通过这些测试？