public void UploadFromFile()
        {
            HomeController controller = new HomeController(new SquareMatrixModel());
            ViewResult result;

            var FileName = string.Format(ConfigurationManager.AppSettings["SquareMatrixFile"],
                        AppDomain.CurrentDomain.BaseDirectory);
            using (var stream = new FileStream(FileName, FileMode.Open))
            {
                var context = new MVCContextMocks(controller, stream);

                // Act
                result = controller.UploadFromFile() as ViewResult;
            }
            ISquareMatrixModel model = result.Model as ISquareMatrixModel;
            // Assert
            Assert.IsTrue(model.GetValue() == "11,12,13,14\r\n21,22,23,24\r\n31,32,33,34\r\n41,42,43,44");
        }