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var mapService, $httpBackend, $q, $rootScope;

beforeEach(inject(function (_mapService_, _$httpBackend_, _$q_, _$rootScope_) {
  mapService = mapService;
  $httpBackend = _$httpBackend_;
  $q = _$q_;
  $rootScope = _$rootScope_;

  // expect the actual request
  $httpBackend.expect('GET', '/onmap/rest/map/uuid?editor=true');

  // react on that request
  $httpBackend.whenGET('/onmap/rest/map/uuid?editor=true').respond({
    success: {
      elements: [1, 2, 3]
    }
  });
}));

it('should return a promise', function () {
  expect(mapService.getMapUuid('uuid', true).then).toBeDefined();
});

/*
Since a promise always has a .then() method, we can check for this property to see if it's a promise or not (of course, other objects could have this method too).

Next you can test of the promise you get resolves with the proper value. You can do that setting up a deferred that you explicitly resolve.
*/


it('should resolve with [something]', function () {
  var data;

  // set up a deferred
  var deferred = $q.defer();
  // get promise reference
  var promise = deferred.promise;

  // set up promise resolve callback
  promise.then(function (response) {
    data = response.success;
  });

  mapService.getMapUuid('uuid', true).then(function(response) {
    // resolve our deferred with the response when it returns
    deferred.resolve(response);
  });

  // force `$digest` to resolve/reject deferreds
  $rootScope.$digest();

  // make your actual test
  expect(data).toEqual([something]);
});