import { TestBed } from '@angular/core/testing'; import { App } from './app'; describe('App', () => { beforeEach(async () => { await TestBed.configureTestingModule({ imports: [App], }).compileComponents(); }); it('should create the app', () => { const fixture = TestBed.createComponent(App); const app = fixture.componentInstance; expect(app).toBeTruthy(); }); it('should render a router outlet', () => { const fixture = TestBed.createComponent(App); const compiled = fixture.nativeElement as HTMLElement; expect(compiled.querySelector('router-outlet')).not.toBeNull(); }); });