public void Dequeue()
{
TransferQueue <string> queue = new TransferQueue <string>(3);
queue.QueueFull += new TransferQueue <string> .QueueFullEventHandler(queue_QueueFull);
queue.Enqueue("ELM0");
queue.Enqueue("ELM1");
queue.Enqueue("ELM2");
Assert.Throws <InvalidOperationException>(delegate() { queue.Dequeue(); });
queue.Enqueue("ELM3");
queue.Enqueue("ELM4");
Assert.AreEqual(queue.Dequeue(), "ELM3");
Assert.AreEqual(queue.Peek(), "ELM4");
queue.Enqueue("ELM5");
queue.Enqueue("ELM6");
Assert.Throws <InvalidOperationException>(delegate() { queue.Peek(); });
queue.Enqueue("ELM7");
queue.Enqueue("ELM8");
queue.Dequeue();
queue.Dequeue();
Assert.AreEqual(queue.Count, 0);
}