import { TestBed , async } from '@angular/core/testing' ; import { RouterTestingModule } from '@angular/router/testing' ; import { AppComponent } from './app.component' ; import { AppTopBarComponent } from './app.topbar.component' ; import { AppMenuComponent , AppSubMenuComponent } from './app.menu.component' ; import { AppFooterComponent } from './app.footer.component' ; import { ScrollPanelModule } from 'primeng/scrollpanel' ; describe ( 'AppComponent' , ( ) => { beforeEach ( async ( ( ) => { TestBed . configureTestingModule ( { imports : [ RouterTestingModule , ScrollPanelModule ] , declarations : [ AppComponent , AppTopBarComponent , AppMenuComponent , AppSubMenuComponent , AppFooterComponent ] , } ) . compileComponents ( ) ; } ) ) ; it ( 'should create the app' , async ( ( ) => { const fixture = TestBed . createComponent ( AppComponent ) ; const app = fixture . debugElement . componentInstance ; expect ( app ) . toBeTruthy ( ) ; } ) ) ; } ) ;