Error: getBasicProfileInformation() method does not exist

This is my code I have tried many trail and error methods
self.getBasicProfileInformation = function () { var deferred = $q.defer(); skillDashBrdServce.getBasicInformation(userName).then(function (result) { self.basicInformation = result; sessionStorage['userSDOType'] = JSON.stringify(result.SDODomain); sessionStorage['userType'] = JSON.stringify(result.AlignmentType); deferred.resolve(); }); return deferred.promise; }

My test Case is as follows.

 it('Should call get Basic Profile Information function', function () {
            spyOn($scope, "getBasicProfileInformation").and.callThrough();
            var result = $scope.getBasicProfileInformation();
            expect($scope.getBasicProfileInformation).toHaveBeenCalled();
        });

can you please tell me where I am going wrong.