public void Enqueue_FullQueue_RemovesFirstItem()
{
const int maxSize = 1;
var first = new object();
var second = new object();
var target = new BoundedQueue <object>(maxSize);
target.Enqueue(first);
target.Enqueue(second);
Assert.Equal(maxSize, target.Count);
Assert.Equal(second, target.Single());
}