public void Summing()
{
XorLinkedList list = new XorLinkedList(new MonitoredUnmanagedMemory());
list.Prepend(1);
list.Prepend(2);
list.Prepend(3);
Assert.Equal(6, list.Sum());
}
public void GetAt()
{
XorLinkedList list = new XorLinkedList(new MonitoredUnmanagedMemory());
list.Prepend(1);
list.Prepend(2);
list.Prepend(3);
Assert.Null(list.GetAt(-1));
Assert.Equal(3, list.GetAt(0));
Assert.Equal(2, list.GetAt(1));
Assert.Equal(1, list.GetAt(2));
Assert.Null(list.GetAt(3));
}