public void EmailsSubsReadToGrid_ForInvalidSortDescription_PartialViewResult(string param, bool activity)
        {
            // Arrange
            InitializeEmailSubs();
            var controller = new SubscriberController();
            var request    = new DataSourceRequest()
            {
                Sorts = CreateSortsList()
            };

            // Act
            var result = controller.EmailsSubsReadToGrid(request, GroupId, Like, param,
                                                         ProfileName, FromDate, ToDate, activity, PageNumber, PageSize) as PartialViewResult;

            // Assert
            result.ShouldSatisfyAllConditions(
                () => result.ShouldNotBeNull(),
                () => result.ViewName.ShouldBe(PartialErrorNotification));
        }