我理解错误的根源,我正在测试的组件需要将FormGroup传递给它的@input()形式:FormGroup.在测试这个组件时,我无法弄清楚如何传递一个.
当我调用fixture.detectChanges()时,在我的每个函数之前出现错误,所以必须在该点之前传入表单
import { async,ComponentFixture,Testbed } from '@angular/core/testing'; import { ReactiveFormsModule,FormsModule,Validators,FormBuilder } from '@angular/forms'; import { StaticComponent } from '../../firewall/static/static.component'; describe('StaticComponent',() => { let component: StaticComponent; let fixture: ComponentFixture<StaticComponent>; beforeEach( async(() => { Testbed.configureTestingModule({ declarations: [ StaticComponent ],imports: [ CommonModule,ReactiveFormsModule,FormsModule ],providers: [ NetworkService,NetworkValidator,HostNameValidator,NotificationsService ] }).compileComponents(); }) ); beforeEach(() => { fixture = Testbed.createComponent(StaticComponent); component = fixture.componentInstance; component.ruleForm = FormBuilder.group({ chain: ['chain',Validators.required],ip: [ '',Validators.required,this.networkValidator.validateNetwork('ip') ],action: ['action',Validators.required] }); fixture.detectChanges(); }); fit('should be created',() => { expect(component).toBeTruthy(); }); });
如何在测试期间将预制表单传递给组件的@Input?我似乎无法正确提供FormBuilder
解决方法
这是我为您提出的测试组件规范.请注意我添加的模拟FormBuilder以及我在规范中提供它的方式.
import { async,Testbed } from '@angular/core/testing'; import { TestingComponent } from './testing.component'; import { FormBuilder,Validators } from '@angular/forms'; describe('TestingComponent',() => { let component: TestingComponent; let fixture: ComponentFixture<TestingComponent>; const formBuilder: FormBuilder = new FormBuilder(); beforeEach(async(() => { Testbed.configureTestingModule({ declarations: [ TestingComponent ],providers: [ { provide: FormBuilder,useValue: formBuilder } ] }) .compileComponents(); })); beforeEach(() => { fixture = Testbed.createComponent(TestingComponent); component = fixture.componentInstance; component.ruleForm = formBuilder.group({ chain: ['chain',Validators.required ],Validators.required] }); fixture.detectChanges(); }); it('should create',() => { expect(component).toBeTruthy(); }); });
这是我的测试组件,以防您需要参考.
import { Component,OnInit } from '@angular/core'; import { FormBuilder } from '@angular/forms'; import { FormGroup,Validators } from '@angular/forms'; @Component({ selector: 'app-testing',templateUrl: './testing.component.html',styleUrls: ['./testing.component.css'] }) export class TestingComponent implements OnInit { ruleForm: FormGroup = new FormGroup({}); constructor(private formBuilder: FormBuilder) { } ngOnInit() { this.ruleForm = this.formBuilder.group({ chain: ['chain',Validators.required] }); } }
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