public void QueueTwoStacks_ExceptionWhenDequeueFromEmptyQueueTest()
{
var q = new QueueTwoStacks();
q.Enqueue(1);
q.Enqueue(2);
q.Dequeue();
q.Dequeue();
Assert.Throws <InvalidOperationException>(() => q.Dequeue());
}
public void QueueTwoStacks_BasicQueueOperationsTest()
{
var q = new QueueTwoStacks();
q.Enqueue(1);
q.Enqueue(2);
q.Enqueue(3);
Assert.Equal(1, q.Dequeue());
Assert.Equal(2, q.Dequeue());
q.Enqueue(4);
Assert.Equal(3, q.Dequeue());
Assert.Equal(4, q.Dequeue());
}