public void EnumeratorTest()
{
int count = 100;
IEnumerable <int> items = Enumerable.Range(0, count);
IEnumerable <int> reversed = items.Reverse();
IPersistentStack <int> stack = PersistentStack <int> .Of(items);
foreach (IEnumerator enumerator in
new IEnumerator[] { stack.GetEnumerator(), ((IEnumerable)stack).GetEnumerator() })
{
foreach (int item in reversed)
{
Assert.True(enumerator.MoveNext());
Assert.Equal(item, enumerator.Current);
}
Assert.False(enumerator.MoveNext());
}
}
public void CreateStackTest()
{
int count = 100;
IEnumerable <int> items = Enumerable.Range(0, count);
IEnumerable <int> reversedItems = items.Reverse();
IPersistentStack <int> stack = PersistentStack <int> .Of(items);
int itemsLeft = count;
foreach (int expectedItem in reversedItems)
{
Assert.Equal(itemsLeft, stack.Count);
int head;
(head, stack) = stack.Pop();
itemsLeft--;
Assert.Equal(expectedItem, head);
}
CheckEmptyBehaviour(stack);
}