public void TestEnqueue()
{
var queue = new QueueUsingTwoStacks <int>();
queue.Enqueue(10);
Assert.AreEqual(false, queue.IsEmpty);
}
public void TestDequeueEmptyQueueThrows()
{
var queue = new QueueUsingTwoStacks <int>();
var ex = Assert.Throws <InvalidOperationException>(() => queue.Dequeue());
Assert.AreEqual("Queue is empty", ex.Message);
}
public void TestDequeue()
{
var queue = new QueueUsingTwoStacks <int>();
queue.Enqueue(10);
queue.Enqueue(20);
queue.Enqueue(30);
var item = queue.Dequeue();
Assert.AreEqual(10, item);
item = queue.Dequeue();
item = queue.Dequeue();
Assert.AreEqual(30, item);
Assert.AreEqual(true, queue.IsEmpty);
}
public void NormalTest()
{
QueueUsingTwoStacks <int> queue = new QueueUsingTwoStacks <int>();
queue.AppendTail(1);
Assert.Equal(1, queue.RemoveHead());
queue.AppendTail(23);
queue.AppendTail(35);
queue.AppendTail(-2);
Assert.Equal(23, queue.RemoveHead());
queue.AppendTail(9);
queue.AppendTail(13);
Assert.Equal(35, queue.RemoveHead());
Assert.Equal(-2, queue.RemoveHead());
Assert.Equal(9, queue.RemoveHead());
Assert.Equal(13, queue.RemoveHead());
Assert.Throws <InvalidOperationException>(() => queue.RemoveHead());// 队列耗尽
}
public QueueUsingTwoStacks_should()
{
q = new QueueUsingTwoStacks();
}
public void It_should_perform_like_a_generic_stack()
{
var q = new QueueUsingTwoStacks<int>();
q.Enqueue(5);
q.Dequeue().Should().Be(5);
}
public void InvalidInput()
{
QueueUsingTwoStacks <object> queue = new QueueUsingTwoStacks <object>();
Assert.Throws <ArgumentNullException>(() => queue.AppendTail(null));
}
