Angular NullInjectorError:没有InjectionToken MatDialogData的提供程序
我在Angular应用程序上运行jasmine测试时遇到此错误Angular NullInjectorError:没有InjectionToken MatDialogData的提供程序,angular,jasmine,angular-material,karma-jasmine,Angular,Jasmine,Angular Material,Karma Jasmine,我在Angular应用程序上运行jasmine测试时遇到此错误 Error: StaticInjectorError(DynamicTestModule)[MyEditDialogComponent -> InjectionToken MatDialogData]: StaticInjectorError(Platform: core)[MyEditDialogComponent -> InjectionToken MatDialogData]: NullInject
Error: StaticInjectorError(DynamicTestModule)[MyEditDialogComponent -> InjectionToken MatDialogData]:
StaticInjectorError(Platform: core)[MyEditDialogComponent -> InjectionToken MatDialogData]:
NullInjectorError: No provider for InjectionToken MatDialogData!
error properties: Object({ ngTempTokenPath: null, ngTokenPath: [ 'MyEditDialogComponent', InjectionToken MatDialogData ], ngDebugContext: DebugContext_({ view: Object({ def: Object({ factory: Function, nodeFlags: 33669121, rootNodeFlags: 33554433, nodeMatchedQueries: 0, flags: 0, nodes: [ Object({ nodeIndex: 0, parent: null, renderParent: null, bindingIndex: 0, outputIndex: 0, checkIndex: 0, flags: 33554433, childFlags: 114688, directChildFlags: 114688, childMatchedQueries: 0, matchedQueries: Object({ }), matchedQueryIds: 0, references: Object({ }), ngContentIndex: null, childCount: 1, bindings: [ ], bindingFlags: 0, outputs: [ ], element: Object({ ns: '', name: 'app-edit-ban-dialog', attrs: [ ], template: null, componentProvider: Object({ nodeIndex: 1, parent: <circular reference: Object>, renderParent: <circular reference: Object>, bindingIndex: 0, outputIndex: 0, checkIndex: 1, flags: 114688, childFlags: 0, directChildFlags: 0, childMatchedQueries: 0, matchedQueries: Object, matchedQueryIds: 0 ...
Error: StaticInjectorError(DynamicTestModule)[MyEditDialogComponent -> InjectionToken MatDialogData]:
StaticInjectorError(Platform: core)[MyEditDialogComponent -> InjectionToken MatDialogData]:
NullInjectorError: No provider for InjectionToken MatDialogData!
在组件构造函数中,我向对话框注入数据:
@Inject(MAT_DIALOG_DATA) public data: {
myData : MyData
}
在我正在导入的组件的karma jasmin规范中:
import {
MatFormFieldModule,
MatInputModule,
MatDialogModule,
MatDialogRef,
MAT_DIALOG_DATA,
MatButtonModule,
MatRadioModule,
MatSelectModule
} from '@angular/material';
在组件的karma/jasmine规范中,在每次导入之前在中导入和提供程序:
beforeEach(async(() => {
TestBed.configureTestingModule({
declarations: [ MyFormComponent ],
imports: [
MatFormFieldModule,
MatInputModule,
MatDialogModule,
],
providers: [
{ provide: MatDialogRef, useValue: {} },
{ provide: MAT_DIALOG_DATA, useValue: { myData: MyData } }
]
}).compileComponents();
}));
我试过这些答案,但都不能解决问题
尝试从karma jasmin规范中删除MatDialogRef和MAT_DIALOG_数据,然后按如下方式导入所需的组件:
imports: [
DynamicModule.withComponents([YOUR_DIALOG_COMPONENT])
]
在编辑对话框组件中,我将数据对象传递给close方法。我删除了它,错误就消失了
更改为:
this.dialogRef.close(myData);
为此:
this.dialogRef.close();
在本例中,我导入了指令MatDialogModule、MAT_DIALOG_数据和MatDialogRef
import { MatDialogModule, MAT_DIALOG_DATA, MatDialogRef } from '@angular/material/dialog';
然后在beforeatch()中:
import { MatDialogModule, MAT_DIALOG_DATA, MatDialogRef } from '@angular/material/dialog';
imports: [ MatDialogModule],
providers: [
{ provide: MAT_DIALOG_DATA, useValue: {} },
{ provide: MatDialogRef, useValue: {} }
]