public void TestSmartQueueEnqueueAndDequeue()
{
SmartQueue <TestEntry> q = new SmartQueue <TestEntry>();
Assert.IsTrue(q.IsEmpty && q.Count == 0 && q.Head == null);
// make an empty something
TestEntry e1 = new TestEntry();
Assert.IsTrue(e1.enqueuedCount == 0 && e1.dequeuedCount == 0 && e1.activationCount == 0 && e1.deactivationCount == 0);
Assert.IsNull(e1.container);
Assert.IsFalse(e1.IsActive);
Assert.IsFalse(e1.IsEnqueued);
// enqueue it. make sure it's there, and got notified appropriately
q.Enqueue(e1);
Assert.IsTrue(q.Head == e1 && q.Tail == e1 && q.Count == 1 && !q.IsEmpty);
Assert.IsTrue(e1.enqueuedCount == 1 && e1.activationCount == 1);
Assert.IsTrue(e1.IsEnqueued);
Assert.IsTrue(e1.IsActive);
// enqueue something else behind it. the first one should be unaffected
TestEntry e2 = new TestEntry();
q.Enqueue(e2);
Assert.IsTrue(q.Head == e1 && q.Tail == e2 && q.Count == 2 && !q.IsEmpty);
Assert.IsTrue(e1.enqueuedCount == 1 && e1.activationCount == 1); // same as before
Assert.IsTrue(e1.IsEnqueued);
Assert.IsTrue(e1.IsActive);
// but the second one shouldn't be active yet
Assert.IsTrue(e2.enqueuedCount == 1 && e2.activationCount == 0); // enq'd, inactive
Assert.IsTrue(e2.IsEnqueued);
Assert.IsFalse(e2.IsActive);
// dequeue e1, verify it cleaned up
var popped = q.Dequeue();
Assert.IsTrue(popped == e1);
Assert.IsTrue(q.Head == e2 && q.Count == 1 && !q.IsEmpty);
Assert.IsTrue(e1.enqueuedCount == 1 && e1.activationCount == 1); // activations unchanged
Assert.IsTrue(e1.deactivationCount == 1 && e1.dequeuedCount == 1); // deactivations updated
Assert.IsFalse(e1.IsActive);
Assert.IsFalse(e1.IsEnqueued);
Assert.IsTrue(e1.pushedBackCount == 0 && e1.poppedTailCount == 0); // nothing unexpected here
// verify e2 activated
Assert.IsTrue(e2.enqueuedCount == 1 && e2.activationCount == 1);
Assert.IsTrue(e2.IsActive);
// now deq e2 and verify things cleaned up
var popped2 = q.Dequeue();
Assert.IsTrue(popped2 == e2);
Assert.IsTrue(q.Head == null && q.Count == 0 && q.IsEmpty);
Assert.IsTrue(e2.enqueuedCount == 1 && e2.activationCount == 1); // activations unchanged
Assert.IsTrue(e2.deactivationCount == 1 && e2.dequeuedCount == 1); // deactivations updated
Assert.IsTrue(e2.pushedBackCount == 0);
Assert.IsFalse(e2.IsActive); // none of these is true anymore
Assert.IsFalse(e2.IsEnqueued);
Assert.IsNull(e2.container);
}
public void TestSmartQueuePushHead()
{
SmartQueue <TestEntry> q = new SmartQueue <TestEntry>();
Assert.IsTrue(q.IsEmpty && q.Count == 0 && q.Head == null);
// enqueue e1 and e2 onto the queue
TestEntry e1 = new TestEntry();
TestEntry e2 = new TestEntry();
q.Enqueue(e1);
q.Enqueue(e2);
Assert.IsTrue(q.Head == e1 && q.Tail == e2 && q.Count == 2);
Assert.IsTrue(e1.IsEnqueued);
Assert.IsTrue(e1.IsActive);
// now push back something in front of e1
TestEntry h = new TestEntry();
q.PushHead(h);
Assert.IsTrue(q.Head == h && q.Tail == e2 && q.Count == 3);
Assert.IsTrue(h.IsActive && h.IsEnqueued);
Assert.IsTrue(e1.IsEnqueued);
Assert.IsFalse(e1.IsActive); // no longer the head
Assert.IsTrue(e1.pushedBackCount == 1); // it knows it got pushed back
// now let's dequeue it and verify we're back to previous state
var popped = q.Dequeue();
Assert.IsTrue(popped == h);
Assert.IsFalse(h.IsActive);
Assert.IsFalse(h.IsEnqueued);
Assert.IsTrue(q.Head == e1 && q.Tail == e2 && q.Count == 2);
Assert.IsTrue(e1.IsActive && e1.IsEnqueued);
Assert.IsTrue(e1.pushedBackCount == 1);
}