Angular 4.3.0＆cli 1.2.0：運行命令之後：「ng test」我得到了這些故障

Question

Angular 4.3.0 & cli 1.2.0：在運行命令之後：「ng test」我已經得到了這些故障

AppComponent should create the app should have as title 'app' should render title in a h1 tag DashboardComponent should be created 

Answer 1

ng test校驗碼取決於你的* .spec.ts，所以檢查app.component.spec.ts，查找錯誤消息，像

it(`should have as title 'app'`, async(() => { 
    const fixture = TestBed.createComponent(AppComponent); 
    const app = fixture.debugElement.componentInstance; 
    expect(app.title).toEqual('app'); // <--- this line cause the error, it means in your app.component.ts there should has a variable **title** and equal *app* 
}));