public void TestPeek()
{
QueueUp <int> queue = new QueueUp <int>();
queue.Insert(42);
Assert.AreEqual(42, queue.Peek());
queue.Insert(33);
Assert.AreEqual(42, queue.Peek());
Assert.AreEqual(42, queue.Remove());
Assert.AreEqual(33, queue.Peek());
}
public void TestRemove()
{
QueueUp <int> queue = new QueueUp <int>();
queue.Insert(42);
queue.Insert(101);
queue.Insert(33);
Assert.AreEqual(3, queue.Count);
Assert.AreEqual(42, queue.Remove());
Assert.AreEqual(2, queue.Count);
Assert.AreEqual(101, queue.Remove());
Assert.AreEqual(1, queue.Count);
Assert.AreEqual(33, queue.Remove());
Assert.AreEqual(0, queue.Count);
// Test that we can insert things after we emptied the queue
queue.Insert(200);
Assert.AreEqual(1, queue.Count);
Assert.AreEqual(200, queue.Remove());
queue.Insert(201);
queue.Insert(202);
Assert.AreEqual(2, queue.Count);
Assert.AreEqual(201, queue.Remove());
Assert.AreEqual(1, queue.Count);
Assert.AreEqual(202, queue.Remove());
}
public void TestRemoveEmpty()
{
QueueUp <int> queue = new QueueUp <int>();
Assert.ThrowsException <QueueEmptyException>(() => { queue.Remove(); });
}