Angular8: Unit test pass multiple data to mat dialog

Question

I have an angular app where I need to test a mat-dilaog by passing data. I am able to pass it through as below.

{ provide: MAT_DIALOG_DATA, useValue: staffData },

But I am trying to find a way to pass different values as part of staffData for different tests. I am not finding a way to do it

  let staffData: any = {
    gridData: [],
    type: "add",
    adConfigured: false,
  };
  beforeEach(async(() => {
    TestBed.configureTestingModule({
      declarations: [StaffAddComponent, HelpDialogComponent],
      imports: [
        FormsModule,
        ReactiveFormsModule,
        HttpClientTestingModule,
        OverlayModule,
        MatDialogModule,
      ],
      providers: [
        StaffaddService,
        AuthService,
        { provide: MatDialogRef, useValue: {} },
        { provide: MAT_DIALOG_DATA, useValue: staffData },
        { provide: MatDialog, useValue: {} },
      ],
      schemas: [CUSTOM_ELEMENTS_SCHEMA, NO_ERRORS_SCHEMA],
    }).compileComponents();

Here I am able to pass staffData to the StaffAddComponent. But I want to test different scenarios by passing different values for staffData