import { async, ComponentFixture, TestBed } from '@angular/core/testing'; import { Demo1Component } from './demo1.component'; describe('Demo1Component', () => { let component: Demo1Component; let fixture: ComponentFixture; beforeEach(async(() => { TestBed.configureTestingModule({ declarations: [ Demo1Component ] }) .compileComponents(); })); beforeEach(() => { fixture = TestBed.createComponent(Demo1Component); component = fixture.componentInstance; fixture.detectChanges(); }); it('should create', () => { expect(component).toBeTruthy(); }); });