Question

我正在使用Angular2应用程序 @ angular / material 2.0.0-alpha.11-3 angular-cli 1.0.0-beta.19-3 业力1.2.0 karma-jasmine 1.0.2

运行它工作正常但是模板有md-icon按钮的几个测试失败并出现模板错误：

ERROR: 'Unhandled Promise rejection:', 'Template parse errors:
'md-icon' is not a known element:
1. If 'md-icon' is an Angular component, then verify that it is part of this module.                                
2. If 'md-icon' is a Web Component then add "CUSTOM_ELEMENTS_SCHEMA" to the '@NgModule.schemas' of this component to suppress this message

我的app.module.ts：

import { MaterialModule } from '@angular/material';

@NgModule({
  declarations: [
    AppComponent,
    LinearProgressIndicatorComponent,
    MyNewDirectiveDirective,
    MyNewServiceDirective,
    HeaderComponent,
    MenuComponent,
    WatchpanelComponent,
    InputComponent
  ],
  imports: [
    BrowserModule,
    FormsModule,
    HttpModule,
    NgbModule.forRoot(),
    MaterialModule.forRoot(),
  ],
  exports: [ MaterialModule ],
  providers: [LocalStorage],
  bootstrap: [AppComponent]
})
export class AppModule { }

watchpanel.component.spec.ts：

import { async, ComponentFixture, TestBed } from '@angular/core/testing';
import { By } from '@angular/platform-browser';
import { DebugElement } from '@angular/core';
import { WatchpanelComponent } from './watchpanel.component';

describe('WatchpanelComponent', () => {
  let component: WatchpanelComponent;
  let fixture: ComponentFixture<WatchpanelComponent>;

  beforeEach(async(() => {
    TestBed.configureTestingModule({
      declarations: [ WatchpanelComponent ] // declare the test component
    })
    .compileComponents();

    fixture = TestBed.createComponent(WatchpanelComponent);
    component = fixture.componentInstance;
    fixture.detectChanges();

  }));

  // beforeEach(() => {
  //   fixture = TestBed.createComponent(WatchpanelComponent);
  //   component = fixture.componentInstance;
  //   fixture.detectChanges();
  // });

  it('should create', () => {
    expect(component).toBeTruthy();
  });
});

据我所知，@ angular / material现在包含导入所需的唯一模块，MaterialModule。我尝试从@ angular2-material / icon导入MdIconModule但没有成功。我究竟做错了什么？提前致谢

Answer 1

按照yurzui的建议导入MaterialModule并在返回promise后创建组件解决了它。谢谢yurzui

import { async, ComponentFixture, TestBed } from '@angular/core/testing';
import { By } from '@angular/platform-browser';
import { DebugElement } from '@angular/core';
import { WatchpanelComponent } from './watchpanel.component';
import { FormsModule } from '@angular/forms';
import { MaterialModule } from '@angular/material';

describe('WatchpanelComponent', () => {
  let component: WatchpanelComponent;
  let fixture: ComponentFixture<WatchpanelComponent>;

  beforeEach(async(() => {
    TestBed.configureTestingModule({
      imports: [ MaterialModule.forRoot() ],
      // forRoot() deprecated
      // in later versions ------^
      declarations: [ WatchpanelComponent ] // declare the test component
    })
    .compileComponents().then(() => {
      fixture = TestBed.createComponent(WatchpanelComponent);
      component = fixture.componentInstance;
      fixture.detectChanges();
    });

  }));

  // beforeEach(() => {
  //   fixture = TestBed.createComponent(WatchpanelComponent);
  //   component = fixture.componentInstance;
  //   fixture.detectChanges();
  // });

  it('should create', () => {
    expect(component).toBeTruthy();
  });
});

Answer 2

自@ javahaxxor回答以来，Angular Material的新版本发生了变化。我已经解决了这个问题，导入了与AppModule中相同的模块（我还需要表格）：

import {
  MatButtonModule,
  MatCardModule,
  MatIconModule,
  MatInputModule,
  MatProgressSpinnerModule,
  MatDialogModule,
  MatCheckboxModule
} from '@angular/material';

// ... not important

beforeEach(async(() => {
    TestBed.configureTestingModule({
      declarations: [ WelcomeComponent ],
      imports: [
        NoopAnimationsModule,
        FormsModule,
        ReactiveFormsModule,
        MatButtonModule,
        MatCardModule,
        MatIconModule,
        MatInputModule,
        MatProgressSpinnerModule,
        MatDialogModule,
        MatCheckboxModule
      ],
      providers: [
        // ...
      ]
    })
    .compileComponents();
  }));

Answer 3

最新版本的Angular Material中不再提供

md-icon 。所有标签/元素现在都以“mat”为前缀而不是“md”。所以<md-icon> ..成了.. <mat-icon>

Angular2材料＆md-icon＆＃39;与Karma / Jasmine不是一个众所周知的元素

3 个答案: