ngOnInit() {
    this.store.dispatch(new LoadPropertiesRequested());
    this.properties$ = this.store.pipe(select(selectAllProperties));
    this.loading$ = this.store.pipe(select(selectPropertiesLoading));
    this.logs$ = this.store.pipe(select(selectPropertiesLogs));
  }

beforeEach(async(() => {
    TestBed.configureTestingModule({
      imports: [
        StoreModule.forRoot({
          ...fromRoot.reducers,
          feature: combineReducers(fromProperties.reducer),
        })
      ],
      declarations: [
        SidebarPropertiesComponent,
        SidebarElementComponent
      ]
    })
    .compileComponents();
  }));