How to create a File Transfer Jasmine Test in javascript

I'm having trouble testing my file transfer code. It keeps saying "File Transfer undefined". I'm not sure if I need to stub the File Transfer?

Below is my code I'm trying to test:

 var uploadAttachment = function(url, mediaFile, type, onSuccess, onError) { 
        var path;
        var ft = new FileTransfer();

        if(mediaFile.fullPath == undefined){
            path = mediaFile;
        }else{
            path = mediaFile.fullPath;
        }

        var options = new FileUploadOptions();
            options.chunkedMode = true;
            options.fileKey = "file";
            options.fileName = type;
            options.mimeType = "multipart/form-data";

        ft.upload(path, url, function(result) {
            onSuccess();
        }, function(error) {
            onError();
        }, options);

        return true;
    };   

Below is my current failed jasmine unit test:

describe('appService', function() {
beforeEach(module('msApp.services'));
beforeEach(module('msApp.environment'));

var scope, rootScope, ft, appServiceMock, httpBackendMock, apiURL, user, request, environment, data, actionItemId;

describe('service tests', function() {
            beforeEach(inject(function($rootScope, $injector, Environment) {      
                  scope = $rootScope.$new();    

                  httpBackendMock = $injector.get('$httpBackend');  
                  appServiceMock = $injector.get('AppService');
                  environment = Environment;
                  rootScope = $rootScope;

                  //Variables
                  rootScope.App = {};
                  rootScope.App.Session = "";
                  apiURL = "";   
                  user = {};          
                  request = {};     
                  data = {};   
                  actionItemId = "";                             
            }));

            afterEach(function() {
                httpBackendMock.verifyNoOutstandingExpectation();
                httpBackendMock.verifyNoOutstandingRequest();
            });


            it("Should upload attachment as expected", function(){
                spyOn(appServiceMock, 'uploadAttachment').and.callThrough();                    
                var type, url, mediaFile, ft;

                var ft = new FileTransfer();

                appServiceMock.uploadAttachment(url, mediaFile, type, jasmine.any(Function),  jasmine.any(Function));    
            })  

 });
});

Thank you in advance.