我正在尝试对AppComponent进行单元测试,并得到此错误:
无法绑定到“标头”,因为它不是的已知属性 “应用预览器”。
- 如果“ app-previewer”是Angular组件,并且具有“ header”输入,则请验证它是否属于此模块。
我认为这与我用来在父级(EditorComponent)和子级(PreviewerComponent)之间进行通信的 @Input 有关。此错误仅在测试期间发生。
app.component.spec.ts :
describe('AppComponent', () => {
beforeEach(async(() => {
TestBed.configureTestingModule({
declarations: [
AppComponent,
EditorComponent,
PreviewerComponent
],
}).compileComponents();
}));
it('should create the app', async(() => {
const fixture = TestBed.createComponent(AppComponent);
const app = fixture.debugElement.componentInstance;
expect(app).toBeTruthy();
}));
app.component.html :
<app-editor></app-editor>
editor.component.ts :
import { Component, OnInit } from '@angular/core';
import { Header } from '../model/Header';
@Component({
selector: 'app-editor',
templateUrl: './editor.component.html',
styleUrls: ['./editor.component.css']
})
export class EditorComponent implements OnInit {
header: Header;
constructor() {
this.header = new Header();
}
ngOnInit() {
}
}
editor.component.html :
<app-previewer [header]="header"></app-previewer>
previewer.component.ts :
import { Component, OnInit, Input } from '@angular/core';
import { Header } from '../model/Header';
@Component({
selector: 'app-previewer',
templateUrl: './previewer.component.html',
styleUrls: ['./previewer.component.css']
})
export class PreviewerComponent implements OnInit {
@Input() header: Header;
constructor() {
}
ngOnInit() {
}
}
答案 0 :(得分:0)