public void ShouldReturnInvalidOperationException()
{
var queue = new QueueAdt <int>();
Action action = () => queue.GetNext();
action.Should().Throw <InvalidOperationException>();
}
public void PeekFirstAdded()
{
queue = new QueueAdt <int>();
queue.Add(firstAdded);
queue.Add(2);
startCount = queue.Count;
valuePicked = queue.GetNext();
}