System.Collections.Tests.SortedListTests.GetValueList_TryingToModifyCollection_ThrowsNotSupportedException C# (CSharp) Method

        public static void GetValueList_TryingToModifyCollection_ThrowsNotSupportedException()
        {
            SortedList sortList1 = Helpers.CreateIntSortedList(100);
            Helpers.PerformActionOnAllSortedListWrappers(sortList1, sortList2 =>
            {
                IList values = sortList2.GetValueList();

                Assert.Throws<NotSupportedException>(() => values.Add(101));
                Assert.Throws<NotSupportedException>(() => values.Clear());
                Assert.Throws<NotSupportedException>(() => values.Insert(0, 101));
                Assert.Throws<NotSupportedException>(() => values.Remove(1));
                Assert.Throws<NotSupportedException>(() => values.RemoveAt(0));
                Assert.Throws<NotSupportedException>(() => values[0] = 101);
            });
        }