public void MinPriorityQueueEnumerationYieldsHighestPriorityAsLastItem()
{
var priorityQueue = new MinPriorityQueue <string, int>(50);
List <Tuple <string, int> > items = new List <Tuple <string, int> >
{
new Tuple <string, int>("A_50", 50),
new Tuple <string, int>("A_41", 41),
new Tuple <string, int>("A_38", 38),
new Tuple <string, int>("A_37", 37),
new Tuple <string, int>("A_23", 23),
new Tuple <string, int>("A_11", 11),
new Tuple <string, int>("A_5", 5),
new Tuple <string, int>("A_3", 3),
}.Randomize()
.ToList();
priorityQueue.EnqueueRange(items);
List <string> list = new List <string>();
foreach (string s in priorityQueue)
{
list.Add(s);
}
Assert.AreEqual("A_50", list.Last());
}
public void MinPriorityQueueDoesNotInsertItemToHeadIfItemIsHigherPriorityThanHead()
{
var priorityQueue = new MinPriorityQueue <string, int>(50);
List <Tuple <string, int> > items = new List <Tuple <string, int> >
{
new Tuple <string, int>("A_50", 50),
new Tuple <string, int>("A_41", 41),
new Tuple <string, int>("A_38", 38),
new Tuple <string, int>("A_37", 37),
new Tuple <string, int>("A_23", 23),
new Tuple <string, int>("A_11", 11),
new Tuple <string, int>("A_5", 5),
new Tuple <string, int>("A_3", 3),
}.Randomize()
.ToList();
priorityQueue.EnqueueRange(items);
string originalHead = priorityQueue.Peek();
priorityQueue.Enqueue("A_4", 4);
string newHead = priorityQueue.Peek();
Assert.AreEqual("A_3", originalHead);
Assert.AreEqual("A_3", newHead);
}
public void MinPriorityQueueMovesNextLowestPriorityItemToHeadAfterRemoveItem()
{
var priorityQueue = new MinPriorityQueue <string, int>(50);
List <Tuple <string, int> > items = new List <Tuple <string, int> >
{
new Tuple <string, int>("A_50", 50),
new Tuple <string, int>("A_41", 41),
new Tuple <string, int>("A_38", 38),
new Tuple <string, int>("A_37", 37),
new Tuple <string, int>("A_23", 23),
new Tuple <string, int>("A_11", 11),
new Tuple <string, int>("A_5", 5),
new Tuple <string, int>("A_3", 3),
}.Randomize()
.ToList();
priorityQueue.EnqueueRange(items);
priorityQueue.Dequeue();
string item = priorityQueue.Peek();
Assert.AreEqual("A_5", item);
}
public void MinQueueAddItemsWithSize()
{
var queue = new MinPriorityQueue <string, int>(Number);
queue.EnqueueRange(_array);
Assert.AreEqual(Number, queue.Count);
}
public void MinPriorityQueueDoesInsertItemInCollectionAsHeadIfItemIsLowerPriorityThanOriginalHead()
{
var priorityQueue = new MinPriorityQueue <string, int>(50);
List <Tuple <string, int> > items = new List <Tuple <string, int> >
{
new Tuple <string, int>("A_50", 50),
new Tuple <string, int>("A_41", 41),
new Tuple <string, int>("A_38", 38),
new Tuple <string, int>("A_37", 37),
new Tuple <string, int>("A_23", 23),
new Tuple <string, int>("A_11", 11),
new Tuple <string, int>("A_5", 5),
new Tuple <string, int>("A_3", 3),
}.Randomize()
.ToList();
priorityQueue.EnqueueRange(items);
string originalHead = priorityQueue.Peek();
List <Tuple <string, int> > newItems = new List <Tuple <string, int> >
{
new Tuple <string, int>("A_2", 2),
new Tuple <string, int>("A_4", 4),
new Tuple <string, int>("A_6", 6),
new Tuple <string, int>("A_8", 8),
new Tuple <string, int>("A_10", 10),
new Tuple <string, int>("A_12", 12),
new Tuple <string, int>("A_14", 14),
new Tuple <string, int>("A_16", 16),
}.Randomize()
.ToList();
priorityQueue.EnqueueRange(newItems);
string newHead = priorityQueue.Peek();
Assert.AreEqual("A_3", originalHead);
Assert.AreEqual("A_2", newHead);
}
public void MinPriorityQueueInsertsItems()
{
var priorityQueue = new MinPriorityQueue <string, int>(50);
List <Tuple <string, int> > items = new List <Tuple <string, int> >
{
new Tuple <string, int>("A_50", 50),
new Tuple <string, int>("A_41", 41),
new Tuple <string, int>("A_38", 38),
new Tuple <string, int>("A_37", 37),
new Tuple <string, int>("A_23", 23),
new Tuple <string, int>("A_11", 11),
new Tuple <string, int>("A_5", 5),
new Tuple <string, int>("A_3", 3),
}.Randomize()
.ToList();
priorityQueue.EnqueueRange(items);
Assert.AreEqual(8, priorityQueue.Count);
}
public void MinPriorityQueueClearRemovesAllItems()
{
var priorityQueue = new MinPriorityQueue <string, int>(50);
List <Tuple <string, int> > items = new List <Tuple <string, int> >
{
new Tuple <string, int>("A_50", 50),
new Tuple <string, int>("A_41", 41),
new Tuple <string, int>("A_38", 38),
new Tuple <string, int>("A_37", 37),
new Tuple <string, int>("A_23", 23),
new Tuple <string, int>("A_11", 11),
new Tuple <string, int>("A_5", 5),
new Tuple <string, int>("A_3", 3),
}.Randomize()
.ToList();
priorityQueue.EnqueueRange(items);
priorityQueue.Clear();
Assert.IsTrue(priorityQueue.IsEmpty);
}
public void MinPriorityQueueDequeueReturnsItemWithLowestPriority()
{
var priorityQueue = new MinPriorityQueue <string, int>(50);
List <Tuple <string, int> > items = new List <Tuple <string, int> >
{
new Tuple <string, int>("A_50", 50),
new Tuple <string, int>("A_41", 41),
new Tuple <string, int>("A_38", 38),
new Tuple <string, int>("A_37", 37),
new Tuple <string, int>("A_23", 23),
new Tuple <string, int>("A_11", 11),
new Tuple <string, int>("A_5", 5),
new Tuple <string, int>("A_3", 3),
}.Randomize()
.ToList();
priorityQueue.EnqueueRange(items);
string item = priorityQueue.Dequeue();
Assert.AreEqual("A_3", item);
}