import { TestBed } from '@angular/core/testing'; import { RouterTestingModule } from '@angular/router/testing'; import { BreadcrumbRouterService } from './breadcrumb-router.service'; describe('AppBreadcrumbService', () => { let service: BreadcrumbRouterService; beforeEach(() => { TestBed.configureTestingModule({ imports: [RouterTestingModule.withRoutes([])] }); service = TestBed.inject(BreadcrumbRouterService); }); it('should be created', () => { expect(service).toBeTruthy(); }); });