public void IfNotAcceptedNotInDictionary()
{
DedupingQueue <DedupableInt> queue = new DedupingQueue <DedupableInt>(2);
Assert.AreEqual(DedupingQueueAddResult.NewItem, queue.AddItem(new DedupableInt(3, "foo")));
Assert.AreEqual(DedupingQueueAddResult.NewItem, queue.AddItem(new DedupableInt(4, null)));
//This item will not be placed into the queue because the queue is full. This means that it should not be placed
//in the Dictionary either becuase then after a matched id replace the object would STILL not be in the queue
Assert.AreEqual(DedupingQueueAddResult.QueueFull, queue.AddItem(new DedupableInt(5, "bar")));
Assert.AreEqual(2, queue.Size);
DedupableInt first;
Assert.IsTrue(queue.Dequeue(out first));
Assert.AreEqual(3, first.getVal());
Assert.AreEqual(DedupingQueueAddResult.NewItem, queue.AddItem(new DedupableInt(6, "bar")));
DedupableInt second;
DedupableInt third;
Assert.IsTrue(queue.Dequeue(out second));
Assert.AreEqual(4, second.getVal());
Assert.IsTrue(queue.Dequeue(out third));
Assert.AreEqual(6, third.getVal());
}
public void EnqueuingNullWorks()
{
DedupingQueue <object> queue = new DedupingQueue <object>();
queue.AddItem(null);
object dequeuedItem;
Assert.IsTrue(queue.Dequeue(out dequeuedItem));
Assert.IsNull(dequeuedItem);
Assert.IsFalse(queue.Dequeue(out dequeuedItem));
Assert.IsNull(dequeuedItem);
}
public void ItemWithNullTokenIsEnqueuedAtEnd()
{
DedupingQueue <DedupableInt> queue = new DedupingQueue <DedupableInt>();
Assert.AreEqual(DedupingQueueAddResult.NewItem, queue.AddItem(new DedupableInt(3, "foo")));
Assert.AreEqual(DedupingQueueAddResult.NewItem, queue.AddItem(new DedupableInt(4, null)));
Assert.AreEqual(2, queue.Size);
DedupableInt first;
DedupableInt second;
Assert.IsNotNull(queue.Dequeue(out first));
Assert.IsNotNull(queue.Dequeue(out second));
Assert.AreEqual(3, first.getVal());
Assert.AreEqual(4, second.getVal());
}
public void ItemWithMatchingTokenReplaces()
{
DedupingQueue <DedupableInt> queue = new DedupingQueue <DedupableInt>();
Assert.AreEqual(DedupingQueueAddResult.NewItem, queue.AddItem(new DedupableInt(3, "foo")));
Assert.AreEqual(DedupingQueueAddResult.NewItem, queue.AddItem(new DedupableInt(4, null)));
Assert.AreEqual(DedupingQueueAddResult.Duplicate, queue.AddItem(new DedupableInt(5, "foo")));
Assert.AreEqual(2, queue.Size);
DedupableInt first;
DedupableInt second;
Assert.IsNotNull(queue.Dequeue(out first));
Assert.IsNotNull(queue.Dequeue(out second));
Assert.AreEqual(5, first.getVal());
Assert.AreEqual(4, second.getVal());
}
public void DequeueWhenEmptyReturnsFalse()
{
DedupingQueue <DedupableInt> queue = new DedupingQueue <DedupableInt>();
DedupableInt item;
Assert.IsFalse(queue.Dequeue(out item));
Assert.IsNull(item);
}
public void QueueWorksWithNonDedupableTypes()
{
DedupingQueue <int> queue = new DedupingQueue <int>(2);
Assert.AreEqual(DedupingQueueAddResult.NewItem, queue.AddItem(1));
Assert.AreEqual(DedupingQueueAddResult.NewItem, queue.AddItem(1));
Assert.AreEqual(DedupingQueueAddResult.QueueFull, queue.AddItem(1));
int dequeuedValue;
Assert.IsTrue(queue.Dequeue(out dequeuedValue));
Assert.AreEqual(1, dequeuedValue);
Assert.IsTrue(queue.Dequeue(out dequeuedValue));
Assert.AreEqual(1, dequeuedValue);
Assert.IsFalse(queue.Dequeue(out dequeuedValue));
Assert.AreEqual(0, dequeuedValue);
}
public void AfterDequeueNotInDictionary()
{
DedupingQueue <DedupableInt> queue = new DedupingQueue <DedupableInt>();
Assert.AreEqual(DedupingQueueAddResult.NewItem, queue.AddItem(new DedupableInt(3, "foo")));
DedupableInt item;
queue.Dequeue(out item);
//After the dequeue above the item is gone from the queue. If the item were still in the Dictionary then
//queueing the same token would cause a replace for an item not in the queue
Assert.AreEqual(DedupingQueueAddResult.NewItem, queue.AddItem(new DedupableInt(4, "foo")));
}
private void WorkThreadProc()
{
while (true)
{
T item;
if (!queue.Dequeue(out item))
{
Thread.Sleep(50);
continue;
}
try
{
blockingOperation(item);
}
catch (Exception e)
{
try { HandleOperationErrors(e); } //don't let problems in the extension's error handling crash the thread
catch (Exception) { }
}
}
}