public void ShouldClearTheQueue()
{
var queue = new RingQueue_(10);
queue.Enqueue(30);
queue.Clear();
Assert.That(queue.Count, Is.EqualTo(0));
}
public void ShouldPeekTheFirstNonConsumedItem()
{
var queue = new RingQueue_(10);
queue.Enqueue(1);
queue.Enqueue(2);
queue.Enqueue(3);
Assert.That(queue.Peek(), Is.EqualTo(1));
}
public void ShouldEnqueueUpToSize()
{
var queue = new RingQueue_(10);
for (int i = 0; i < 10; i++)
{
queue.Enqueue(i);
}
Assert.Pass();
}
public void ShouldNotModifyQueue()
{
var queue = new RingQueue_(10);
queue.Enqueue(10);
queue.Enqueue(15);
int count = queue.Count;
queue.Peek();
Assert.That(queue.Count, Is.EqualTo(count));
}
public void ShouldDequeueInEnqueueOrder()
{
var queue = new RingQueue_(10);
for (int i = 0; i < 10; i++)
{
queue.Enqueue(i);
}
for (int i = 0; i < 10; i++)
{
Assert.That(queue.Dequeue(), Is.EqualTo(i));
}
}
public void ShouldReportNumberOfItems()
{
var queue = new RingQueue_(10);
for (int i = 0; i < 10; i++)
{
queue.Enqueue(i);
Assert.That(queue.Count, Is.EqualTo(i + 1));
}
for (int i = 10; i == 0; i++)
{
queue.Dequeue();
Assert.That(queue.Count, Is.EqualTo(i - 1));
}
}
public void ShouldThrowInvalidOperationExceptionWhenQueueIsEmptyForDequeue()
{
var queue = new RingQueue_(10);
Assert.That(() => queue.Dequeue(), Throws.InvalidOperationException);
}
