public void PreviewReturnsErrorIfPresentationDoesNotExist()
 {
     MDatabaseContext.AllInstances.PresentationExistsInt32 = (i, g) => false;
     MDatabaseContext.AllInstances.GetPresentationInt32 = (i, g) => null;
     var controller = new GalleryController();
     var result = controller.Preview(1);
     Assert.AreEqual("Error", result.ViewName);
 }
 public void PreviewReturnsPresentationIfPresentationExists()
 {
     var presentation = new SPresentation(){PresentationId = 1};
     MDatabaseContext.AllInstances.PresentationExistsInt32 = (i, g) => true;
     MDatabaseContext.AllInstances.GetPresentationInt32 = (i, g) => presentation;
     var controller = new GalleryController();
     var result = controller.Preview(1);
     Assert.AreNotEqual("Error", result.ViewName);
 }