public void SynchronisedDoubleEndedQueueDequeuingItemBackDoesNotImpactFront()
{
var items = new[] { 1, 2, 3, 4, 5, 6, 7, 8 };
var deque = new SynchronisedDeque <int>(items);
int originalFront = deque.PeekAtItemFromFront();
deque.DequeueItemFromBack();
int newFront = deque.PeekAtItemFromFront();
Assert.AreEqual(originalFront, newFront);
}
public void SynchronisedDoubleEndedQueueSupportsEnqueueingItemToFrontOfQueue()
{
var items = new[] { 1, 2, 3, 4, 5, 6, 7, 8 };
var deque = new SynchronisedDeque <int>(items);
deque.EnqueueItemToFront(9);
int front = deque.PeekAtItemFromFront();
Assert.AreEqual(9, front);
}
public void SynchronisedDoubleEndedQueueDequeuingItemFromFrontUpdatesFront()
{
var items = new[] { 1, 2, 3, 4, 5, 6, 7, 8 };
var deque = new SynchronisedDeque <int>(items);
deque.DequeueItemFromFront();
int newFront = deque.PeekAtItemFromFront();
Assert.AreEqual(2, newFront);
}
public void SynchronisedDoubleEndedQueuePeekAtItemFromFrontThrowsIfQueueIsEmpty()
{
var deque = new SynchronisedDeque <int>();
Assert.Throws <InvalidOperationException>(() => deque.PeekAtItemFromFront());
}
