public void SelectedText_ListEmpty()
        {
            // setup
            var mod = new SortCategoryViewModel();

            // sense
            Assert.Equal(null, mod.SelectedText);
        }
        public void SelectedText_Sel()
        {
            // setup
            var mod = new SortCategoryViewModel();
            mod.Items.Add(new Option { Selected = false, Name = "t1", Value = "v1" });
            mod.Items.Add(new Option { Selected = true, Name = "t2", Value = "v1" });
            mod.Items.Add(new Option { Selected = false, Name = "t3", Value = "v1" });

            // sense
            Assert.Equal("t2", mod.SelectedText);
        }