Test unitaire Angular Dialogue Material - Comment inclure MAT_DIALOG_DATA

Question

J'essaie de tester unitairement cette boîte de dialogue de matériau pour tester si le modèle rend le bon objet injecté. Le composant fonctionne correctement lorsqu'il est utilisé correctement

Composant - La boîte de dialogue

export class ConfirmationDialogComponent {

  constructor(@Inject(MAT_DIALOG_DATA) private dialogModel: ConfirmationDialogModel) {}
}

Modèle de boîte de dialogue

<h1 mat-dialog-title *ngIf="dialogModel.Title">{{dialogModel.Title}}</h1>
<div mat-dialog-content>
  {{dialogModel.SupportingText}}
</div>
<div mat-dialog-actions>
  <button mat-button color="primary" [mat-dialog-close]="false">Cancel</button>
  <button mat-raised-button color="primary"[mat-dialog-close]="true" cdkFocusInitial>{{dialogModel.ActionButton}}</button>
</div>

Modèle - Qu'est-ce qui est injecté

export interface ConfirmationDialogModel {
  Title?: string;
  SupportingText: string;
  ActionButton: string;
}

Test unitaire - Où je reçois le problème

describe('Confirmation Dialog Component', () => {

  const model: ConfirmationDialogModel = {
    ActionButton: 'Delete',
    SupportingText: 'Are you sure?',
  };

  let component: ConfirmationDialogComponent;

  beforeEach(async(() => {
    TestBed.configureTestingModule({
      declarations: [
        ConfirmationDialogComponent
      ],
      imports: [
        MatButtonModule,
        MatDialogModule
      ],
      providers: [
        {
          // I was expecting this will pass the desired value
          provide: MAT_DIALOG_DATA,
          useValue: model
        }
      ]
    });

    component = TestBed.get(ConfirmationDialogComponent);
  }));

  it('should be created', async(() => {
    expect(component).toBeTruthy();
  }));
});

Erreur de karma

Answer 1

Voici un exemple de la façon d'injecter MAT_DIALOG_DATA dans un test unitaire:

 import { async, ComponentFixture, TestBed } from '@angular/core/testing';
 import { MatDialogModule, MAT_DIALOG_DATA } from '@angular/material/dialog';

 import { ConfirmDialogComponent } from './confirm-dialog.component';

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

   beforeEach(async(() => {
     TestBed.configureTestingModule({
       declarations: [ ConfirmDialogComponent ],
       imports: [ MatDialogModule ], // add here
       providers: [
        { provide: MAT_DIALOG_DATA, useValue: {} } // add here
      ],
    })
    .compileComponents();
  }));

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

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