public void AQueueWithOneItem_AfterDequeueItShouldBeEmpty()
{
var queue = new Queue();
queue.Enqueue(2);
queue.Dequeue();
Assert.IsTrue(queue.IsEmpty());
}
public void AQueueWithThreeItems_FirstDequeueShouldReturnFirstItemEnqueued()
{
var queue = new Queue();
queue.Enqueue(7);
queue.Enqueue(8);
queue.Enqueue(9);
Assert.AreEqual(7, queue.Dequeue());
}
public void AQueueWithThreeItem_SecondDequeueShouldReturnSecondItemEnqueued()
{
var queue = new Queue();
queue.Enqueue(7);
queue.Enqueue(8);
queue.Enqueue(9);
queue.Dequeue();
Assert.AreEqual(8,queue.Dequeue());
}
public void AQueueWithThreeItems_ThirdDequeueShouldReturnThirdItemEnqueued()
{
var queue = new Queue();
queue.Enqueue(7);
queue.Enqueue(8);
queue.Enqueue(9);
queue.Dequeue();
queue.Dequeue();
Assert.AreEqual(9, queue.Dequeue());
}
public void AQueueWithOneItem_DequeueShouldReturnTheItem()
{
var queue = new Queue();
queue.Enqueue(2);
Assert.AreEqual(2, queue.Dequeue());
}
public void NewQueueRaisesExceptionOnDequeue()
{
var queue = new Queue();
try
{
queue.Dequeue();
Assert.Fail("Expected an exception to have been raised");
}
catch (Exception e)
{
Assert.AreEqual(typeof(ActionNotAllowedException),e.GetType());
}
}
public void AQueueWithTwoItems_SecondDequeueShouldReturnSecondItemEnqueued()
{
var queue = new Queue();
queue.Enqueue(5);
queue.Enqueue(6);
queue.Dequeue();
Assert.AreEqual(6, queue.Dequeue());
}
public void AQueueWithTwoItems_FirstDequeueShouldReturnFirstItemEnqueued()
{
var queue = new Queue();
queue.Enqueue(3);
queue.Enqueue(4);
Assert.AreEqual(3, queue.Dequeue());
}
public void AQueueWithTwoItems_AfterSecondDequeue_ShouldBeEmpty()
{
var queue = new Queue();
queue.Enqueue(5);
queue.Enqueue(6);
queue.Dequeue();
queue.Dequeue();
Assert.IsTrue(queue.IsEmpty());
}
public void AQueueWithTwoItems_AfterFirstDequeue_ShouldNotBeEmpty()
{
var queue = new Queue();
queue.Enqueue(3);
queue.Enqueue(4);
queue.Dequeue();
Assert.IsFalse(queue.IsEmpty());
}