public void SplayTree_Accuracy_Test()
{
var nodeCount = 1000;
var rnd = new Random();
var sorted = Enumerable.Range(1, nodeCount).ToList();
var randomNumbers = sorted
.OrderBy(x => rnd.Next())
.ToList();
var tree = new SplayTree <int>();
for (int i = 0; i < nodeCount; i++)
{
tree.Insert(randomNumbers[i]);
tree.Root.VerifyCount();
Assert.IsTrue(tree.Count == i + 1);
}
for (int i = 0; i < sorted.Count; i++)
{
Assert.AreEqual(sorted[i], tree.ElementAt(i));
Assert.AreEqual(i, tree.IndexOf(sorted[i]));
}
//shuffle again before deletion tests
randomNumbers = Enumerable.Range(1, nodeCount)
.OrderBy(x => rnd.Next())
.ToList();
//IEnumerable test using linq
Assert.AreEqual(tree.Count, tree.Count());
Assert.AreEqual(tree.Count, tree.AsEnumerableDesc().Count());
for (int i = 0; i < nodeCount; i++)
{
if (rnd.NextDouble() >= 0.5)
{
tree.Delete(randomNumbers[i]);
}
else
{
var index = tree.IndexOf(randomNumbers[i]);
Assert.AreEqual(tree.ElementAt(index), randomNumbers[i]);
tree.RemoveAt(index);
}
tree.Root.VerifyCount();
Assert.IsTrue(tree.Count == nodeCount - 1 - i);
}
Assert.IsTrue(tree.Count == 0);
}