public override bool Contains(object obj)
{
bool result;
lock (root)
{
result = deque.Contains(obj);
}
return(result);
}
public void Contains()
{
var deque = new Deque<int>(new[] { 2, 3, 4, 5, 6 });
Assert.IsTrue(deque.Contains(2));
Assert.IsTrue(deque.Contains(6));
Assert.IsFalse(deque.Contains(7));
deque = new Deque<int>(new[] { 2, 3, 4, 5, 6 });
deque.EnqueueHead(1);
deque.EnqueueHead(0);
Assert.IsTrue(deque.Contains(0));
Assert.IsTrue(deque.Contains(6));
Assert.IsFalse(deque.Contains(7));
var deque2 = new Deque<string>();
deque2.EnqueueHead("item 1");
deque2.EnqueueHead(null);
Assert.IsTrue(deque2.Contains("item 1"));
Assert.IsTrue(deque2.Contains(null));
Assert.IsFalse(deque2.Contains(String.Empty));
Assert.IsFalse(deque2.Contains("item 2"));
}
private static void TestContains(Deque deque)
{
deque.Clear();
PopulateDequePushBack(deque);
for(int i = 0; i < deque.Count; i++)
{
Debug.Assert(deque.Contains(i));
}
Debug.Assert(!deque.Contains(ElementCount));
}