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!