public void Contains_ReturnsFalseIfNotInList()
{
VirtualizingList<int> list = new VirtualizingList<int>();
list.UpdateCount(20);
list[2] = 8;
list[10] = 42;
bool result = list.Contains(15);
Assert.AreEqual(false, result);
}
public void Contains_ReturnsTrueIfItemInList()
{
VirtualizingList<int> list = new VirtualizingList<int>();
list.UpdateCount(20);
list[2] = 8;
list[10] = 42;
bool result = list.Contains(42);
Assert.AreEqual(true, result);
}