Unit testing angular directives -need advice

I have already gotten some amazing help from you guys testing my angular directive but I am still having a ton of trouble testing this part of my directive:

link: function (scope, element, attrs) {
                scope.$watch('defaultSrc', function (value) {
                    if (value !== undefined) {
                        scope.imageSource = value;
                    }
                });

                element.click(function () {
                    scope.pickImage(scope.accountId).then(function (image) {
                        scope.imageSource = image.storageUrl;
                        scope.fileId = image.fileId;
                    }, function () {
                        console.log('Modal dismissed at: ' + new Date());
                    });
                });
            }

I am trying to test the element.click by using the triggerHandler but im not having any luck. Testing the link: $watch function has also proven to be impossible for me. Has anyone ever done this? I have found simular examples but none that I seem to be able to get working

this is what I currently have:

describe('element.click()', function () {

          var image = {
            storageUrl: 'http://ift.tt/15PRIm0',
            fileId: 6432342
          };

          beforeEach(function () {
            scope.campaign = {
                fileId: '43253',
                accountId: '3874',
                imageSource: 'http://ift.tt/15PRIlY',
                width: '250',
                height: '250'
            };
            var element = angular.element('<img data-ng-src="{{ imageSource }}" width="{{campaign.width}}" height="{{campaign.height}}" alt="Image Picker" class="img-rounded" />');
            compiled = $compile(element)(scope);
            compiled.triggerHandler('click');
            scope.$digest();
            });

            it('should call pickImage when clicked', function () {
                scope.pickImage = function (accountId) {
                    var defer = $q.defer();
                    defer.resolve(image);
                    return defer.promise;
                };
                spyOn(scope, 'pickImage');
                expect(scope.pickImage).toHaveBeenCalledWith(scope.campaign.accountId);

            });

            it('should assign data from resolved promise when clicked', function () {
                scope.pickImage = function (accountId) {
                    var defer = $q.defer();
                    defer.resolve(image);
                    return defer.promise;
                };
                expect(scope.imageSource).toEqual(image.storageUrl);
                expect(scope.fileId).toEqual(image.fileId);
            });