Angular Material and Jasmine : " No provider for InjectionToken MdDialogData! "

I added this :

providers: [
    { provide: MAT_DIALOG_DATA, useValue: {} },
    // { provide: MdDialogRef, useValue: {} }, --> deprecated
    { provide: MatDialogRef, useValue: {} } ---> now
]

And it works :)

Thanks for your help @methgaard!

For Angular 5 with latest Material Component

 import { MAT_DIALOG_DATA, MatDialogRef } from '@angular/material/dialog';

and

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