beforeEach(inject(function(phones, $rootScope, $controller) {
   spyOn(phones, 'query').and.returnValue(FromObservable.create([
     [{name: 'Nexus S'}, {name: 'Motorola DROID'}]
   ]));
   scope = $rootScope.$new();
   ctrl = $controller('PhoneListCtrl', {$scope: scope});
 }));

  it('should fetch phone detail', function() {
    spyOn(phones, 'get').and.returnValue(FromObservable.create([xyzPhoneData()]));

    let ctrl = $controller('PhoneDetailCtrl', {$scope: scope});

    expect(phones.get).toHaveBeenCalledWith('xyz');
    expect(ctrl.phone).toEqual(xyzPhoneData());
  });

 get(id):Observable<Phone> {
   return FromObservable.create([xyzPhoneData()]);
 }

 query():Observable<Phone[]> {
   return FromObservable.create([
     [{name: 'Nexus S'}, {name: 'Motorola DROID'}]
   ])
 }