How can I mock an Observable.throw in an Angular2 test?

Question

I want to test the error handling in my Angular2 component and therefore want to mock a service to return an Observable.throw(\'error\'). How can that be done using Jasmine and

Answer 1

Here is my solution for the ones using Rxjs 6

let mockService = {
  getData: () => {
    return of({data:'any data'});
  }
}

spyOn(mockService , 'getData').and.callFake(() => {
  return throwError(new Error('Fake error'));
});