public void TestGetRange()
{
object[] range = _list.GetRange(0, 3);
AssertEquals(2, range.Length);
AssertSame(_customer1, range[0]);
AssertSame(_customer2, range[1]);
range = _list.GetRange(1, 1);
AssertEquals(1, range.Length);
AssertSame(_customer2, range[0]);
}