public void EmptyFlagIsCorectAfterQueueBecomesEmpty()
{
var queue = new QueueViaLinkedList <int>();
queue.Enqueue(5);
queue.Dequeue();
Assert.True(queue.IsEmpty());
}
public void Dequeue_Test()
{
IQueue <char> queue = new QueueViaLinkedList <char>(5);
queue.Enqueue('A');
queue.Enqueue('B');
queue.Enqueue('C');
queue.Enqueue('D');
queue.Enqueue('E');
queue.IsEmpty.Should().BeFalse();
queue.IsFull.Should().BeTrue();
queue.Count.Should().Be(5);
queue.Dequeue().Should().Be('A');
queue.Count.Should().Be(4);
queue.Dequeue().Should().Be('B');
queue.Count.Should().Be(3);
queue.Dequeue().Should().Be('C');
queue.Count.Should().Be(2);
queue.Dequeue().Should().Be('D');
queue.Count.Should().Be(1);
queue.Dequeue().Should().Be('E');
queue.Count.Should().Be(0);
Action act = () => queue.Dequeue();
act.Should().Throw <IndexOutOfRangeException>()
.WithMessage("Queue is empty.");
}
static void Main(string[] args)
{
QueueViaLinkedList <int> queue = new QueueViaLinkedList <int>();
int i = 9;
queue.Enqueue(i);
queue.Enqueue(i * 3);
queue.Enqueue(i * 6);
Console.WriteLine(queue.Peek());
Console.WriteLine(queue.Dequeue());
}
public void ExerciseQueueOperation()
{
var queue = new QueueViaLinkedList <int>();
queue.Enqueue(4);
queue.Enqueue(-1);
queue.Enqueue(2);
Assert.AreEqual(3, queue.Size);
Assert.AreEqual(4, queue.Peak());
Assert.AreEqual(4, queue.Dequeue());
Assert.AreEqual(-1, queue.Peak());
Assert.AreEqual(2, queue.Size);
queue.Enqueue(2);
queue.Enqueue(0);
queue.Enqueue(-9);
Assert.AreEqual(5, queue.Size);
Assert.AreEqual(-1, queue.Dequeue());
Assert.AreEqual(2, queue.Peak());
Assert.AreEqual(2, queue.Dequeue());
Assert.AreEqual(2, queue.Peak());
Assert.AreEqual(2, queue.Dequeue());
Assert.AreEqual(0, queue.Peak());
Assert.AreEqual(0, queue.Dequeue());
Assert.AreEqual(-9, queue.Peak());
Assert.AreEqual(-9, queue.Dequeue());
Assert.True(queue.IsEmpty());
Assert.AreEqual(0, queue.Size);
queue.Enqueue(0);
queue.Enqueue(-5);
queue.Enqueue(8);
Assert.AreEqual(3, queue.Size);
Assert.AreEqual(0, queue.Peak());
queue.Enqueue(-3);
queue.Enqueue(10);
Assert.AreEqual(5, queue.Size);
Assert.AreEqual(0, queue.Dequeue());
Assert.AreEqual(-5, queue.Peak());
Assert.AreEqual(-5, queue.Dequeue());
Assert.AreEqual(8, queue.Peak());
Assert.AreEqual(8, queue.Dequeue());
Assert.AreEqual(-3, queue.Peak());
Assert.AreEqual(-3, queue.Dequeue());
Assert.AreEqual(10, queue.Peak());
Assert.AreEqual(1, queue.Size);
queue.Enqueue(-1);
queue.Enqueue(1);
queue.Enqueue(2);
queue.Enqueue(5);
queue.Enqueue(7);
queue.Enqueue(10);
queue.Enqueue(0);
queue.Enqueue(9);
queue.Enqueue(11);
Assert.AreEqual(10, queue.Size);
}
public void ExceptionThrownOnDequeueFromEmptyQueue()
{
var queue = new QueueViaLinkedList <int>();
Assert.Throws <IndexOutOfRangeException>(() => queue.Dequeue());
}