测试时无法在功能模块中设置根存储

Question

以下是导入组件测试

    beforeEach(async(() => {
        TestBed.configureTestingModule({
          imports: [
            RouterTestingModule,
            StoreModule.forRoot({companies: combineReducers(fromStore.reducers), ...fromRootStore.reducers}),
            EffectsModule.forRoot([CompanyEffects, CollectionEffects]),
            StoreRouterConnectingModule
          ],
          providers: [
            CompanyService,
            ...fromCompanyGuards.guards,
            {provide: RouterStateSerializer, useClass: CustomSerializer}
          ],
          declarations: [ CompanySummaryComponent, CompanyHeaderComponent ]
        })
        .compileComponents();
      }));

我的测试

    it('should create', () => {
      expect(component).toBeTruthy();
    });

我的组件：

    constructor(
        private store: Store,
        private rootStore: Store
        ) {

        this.actionsSubscription = this.store.select(fromRootStore.getRouterState)
          .pipe(map((routerState: fromRouter.RouterReducerState) =>
            new company.Select(routerState.state.params.companyId)))
          .subscribe(store);

    }

根存储状态：

    export interface State {
      routerReducer: fromRouter.RouterReducerState;
      user: fromUserReducer.UserState;
    }

Root Reducer：

    export const reducers: ActionReducerMap = {
      routerReducer: fromRouter.routerReducer,
      user: fromUserReducer.reducer
    };

路由器reducer的

选择器：

    export const getRouterState = createFeatureSelector('routerReducer');

**此选择器在组件测试中返回undefined但在应用程序中工作正常。 **

我尝试了在测试中导入商店模块的不同组合

    1) StoreModule.forRoot({companies: combineReducers(fromStore.reducers), ...fromRootStore.reducers}),

    2) StoreModule.forRoot(combineReducers({companies: combineReducers(fromStore.reducers), ...fromRootStore.reducers})),

    3) 1) StoreModule.forRoot(...companies: combineReducers(fromStore.reducers), ...fromRootStore.reducers),

注意：我甚至厌倦了只从root商店访问用户，但它也无法正常工作。 我使用的是ngrx 4.1.1版本。