test class extends abstract class (Angular 5, Jasmine, Karma)

Question

I want to test aclass.component.ts but it always return errors, how can I run the test and call Bclass in the Aclass.spec.ts.

export class Aclass extends Bclass{
  constructor(
    private vueService: VueService,
    private projetService: ProjetService    
  ) {
    super();
  }
}
export abstract class Bclass implements OnInit, OnDestroy {
     constructor() {
        this.activatedRoute = AppInjector.get(ActivatedRoute);
        this.vueLifeCycleService = AppInjector.get(VueLifeCycleService);
    }}