import{TestBed}from'@angular/core/testing';import{ViewdataService}from'./viewdata.service';describe('ViewdataService',()=>{letservice:ViewdataService;beforeEach(()=>{TestBed.configureTestingModule({});service=TestBed.inject(ViewdataService);});it('should be created',()=>{expect(service).toBeTruthy();});});