public void Test_CopyListToArrayReadOnly()
{
var intList = new ListCollection <int> {
1, 2, 3
};
var readOnly = new ReadOnlyListCollection <int>(intList);
int[] array = { 1, 2 };
var checkGet = Assert.Throws <NotSupportedException>(() => readOnly.CopyTo(array, 3));
Assert.Equal("List is readonly!", checkGet.Message);
}
