import { TestBed } from '@angular/core/testing' ; import { CommentService } from './comment.service' ; describe ( 'CommentService' , ( ) => { beforeEach ( ( ) => TestBed . configureTestingModule ( { } ) ) ; it ( 'should be created' , ( ) => { const service = TestBed . get ( CommentService ) ; expect ( service ) . toBeTruthy ( ) ; } ) ; } ) ;