角材料和茉莉花:"InjectionToken MdDialogData 没有提供程序！" [英] Angular Material and Jasmine : " No provider for InjectionToken MdDialogData! "

问题描述

我有一个用于 Angular Material MdDialog 的组件:

I have a component which is meant to be used in an Angular Material MdDialog :

@Component({
  ...
})
export class MyComponent {

  constructor(@Inject(MAT_DIALOG_DATA) public data: any, public dialogRef: 
MdDialogRef<MyComponent>) {
...
  }


}

我正在尝试使用 Jasmine 对其进行单元测试:

I am trying to Unit Test it with Jasmine :

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

  beforeEach(async(() => {
    TestBed.configureTestingModule({
      imports: [
        SharedTestingModule,
      ],
      declarations: [
        MyComponent,
      ],
    })
    .compileComponents();
  }));

  ...
  
});

不幸的是，我收到以下错误:

Unfortunately, I am getting the following error :

错误:InjectionToken MdDialogData 没有提供程序！

Error: No provider for InjectionToken MdDialogData!

SharedTestingModule 导入和导出我的自定义 Angular Material 模块，该模块本身导入和导出 MdDialogModule.

SharedTestingModule imports and exports my custom Angular Material module, which itself imports and exports MdDialogModule.

我怎样才能摆脱这个错误?

How can I get rid of this error?

非常感谢！

Angular 4.2.4
Angular Material 2.0.0-beta.7
Jasmine 2.5.3

推荐答案

我添加了这个:

providers: [
    { provide: MAT_DIALOG_DATA, useValue: {} },
    { provide: MdDialogRef, useValue: {} }
]

它有效:)

感谢@methgaard 的帮助！

Thanks for your help @methgaard!

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