How to unit test normal js function which is not been called in js file with jasmine?

i want to cover this dialogcontroller but it is not called in js file ,how to the testing for this ..please help.mddialog is injected dialogcontroller is also injected in the controller .

function DialogController($rootScope,$scope, $mdDialog,DeviceService,$state) { $scope.deviceData = $rootScope.deviceData;

        $scope.count = 0;
        $scope.iorAppsForm = {};
        $scope.contextPath = location.href.replace(location.origin, "").split("/")[1];
        $scope.checked= true;
        $scope.initialLoad = false;
        $scope.isdisable=false;
        $scope.isDisabled = true;
        $scope.hidebutton = true;
        $scope.test= true;
        $scope.currentCondition = "";
        if($scope.deviceData.ProvMode == 'ACTIVE'){
            $scope.deviceData.DeviceAttributeMap = $scope.deviceData.DeviceAttributeMap || {};
            if($scope.deviceData.DeviceAttributeMap && $scope.deviceData.DeviceAttributeMap.IOR_STATUS){
                $scope.deviceData.DeviceAttributeMap.IOR_STATUS = $scope.deviceData.DeviceAttributeMap.IOR_STATUS;
            }else{
                $scope.deviceData.DeviceAttributeMap.IOR_STATUS = {};
            }
            $scope.currentCondition = 'Active';
        }else if($scope.deviceData.ProvMode == 'INACTIVE'){
            if($scope.deviceData.DeviceType == 'IVG'){
                $scope.currentCondition = 'InactiveIVG'
            }else{
                //localStorage.setItem("UserProfileType","E");
                $scope.profilType = localStorage.getItem("UserProfileType");
                if($scope.profilType == 'E'){
                    $scope.currentCondition = 'InactiveNoIVGExt';
                }else if($scope.profilType == 'I'){
                    $scope.currentCondition = 'InactiveNoIVGInt';
                }
            }
        }else if($scope.deviceData.ProvMode == 'PENDING_ACTIVATION'){
            $scope.currentCondition = 'PendingActivationNew';
            setTimeout(function(){
                console.log("calling");
                DeviceService.getDeviceStatus($scope.deviceData.DeviceGuid)
                .then(function(response){
                    var data = JSON.parse(response);
                    console.log(data);
                    var status = '';
                    if(data.DEVICE_ACTIVATION == 'SENT'){
                        status= 'PendingActivationSent'
                    }else{
                        status = 'PendingActivationNew'
                    }
                    $scope.$apply(function () {
                     $scope.currentCondition = status;
                     });
                });
            },2000);
        }

        if($scope.currentCondition!=""){
            $scope.initialLoad = true;
        }

        $scope.cancel = function(){
            $mdDialog.hide();
        };

        $scope.closeDialog = function(){
            ctrl.devices = $rootScope.resetDevice;
            $mdDialog.cancel();
        };

        $scope.sendIORStatus = function () {
            $scope.deviceData.DeviceAttributes = $scope.deviceData.DeviceAttributes || [];
            var iorData = getJsonObject($scope.deviceData.DeviceAttributes,'AttrName','IOR_STATUS');
            iorData.DeviceGuid = $scope.deviceData.DeviceGuid;
            iorData.AttrName = 'IOR_STATUS';
            iorData.AttrValueString = JSON.stringify($scope.deviceData.DeviceAttributeMap.IOR_STATUS);
            $scope.deviceData.DeviceAttributes.push(iorData);
            DeviceService.updateIORStatus($scope.deviceData)
            .then(function(response){
                console.log(response);
                if(response == ''){
                    $mdDialog.cancel();
                    $state.reload();
                }
            });
        };


        };
    };
}

})();