public void ExecutionIsDeferred()
{
IEnumerableWithCount<int> throwingEnumerable = new ThrowingEnumerable(0);
throwingEnumerable.OrderByDescending(x => x);
}
public void DoesNotIterateForCount()
{
IEnumerableWithCount<int> source = new ThrowingEnumerable(3);
IEnumerableWithCount<int> result = source.OrderByDescending(x => x);
Assert.AreEqual(3, result.Count);
}