public void RandomAddRemoveTest()
{
const int NUMBERS_TO_ADD = 200;
MyAVLTREE <int, string> myAVLTREE = new MyAVLTREE <int, string>();
List <int> addedValues = new List <int>();
Random random = new Random(System.DateTime.Now.Millisecond.GetHashCode());
for (int i = 0; i < NUMBERS_TO_ADD; i++)
{
int randomNumber = random.Next(100);
myAVLTREE.Add(randomNumber, "");
addedValues.Add(randomNumber);
Assert.That(myAVLTREE.Height(), Is.LessThan(MaxHeight(myAVLTREE) + 1), $"Add from: {string.Join(",", addedValues)}");
}
var allAdded = addedValues.ToArray();
List <int> removedIndeces = new List <int>();
while (addedValues.Count > 0)
{
int rnd = random.Next(addedValues.Count());
removedIndeces.Add(rnd);
int toRemove = addedValues[rnd];
addedValues.RemoveAt(rnd);
myAVLTREE.Remove(toRemove);
Assert.That(myAVLTREE.Height(), Is.LessThan(MaxHeight(myAVLTREE) + 1), $"Removed indices from {string.Join(",", addedValues)}: {string.Join(",", removedIndeces)}");
}
}
public void TestRotateRightLeft()
{
MyAVLTREE <int, string> myAVLTREE = new MyAVLTREE <int, string>();
myAVLTREE.Add(3, "");
myAVLTREE.Add(5, "");
myAVLTREE.Add(4, "");
Assert.That(myAVLTREE.Root.Key, Is.EqualTo(4));
Assert.That(myAVLTREE.Root.Left.Key, Is.EqualTo(3));
Assert.That(myAVLTREE.Root.Right.Key, Is.EqualTo(5));
Assert.That(Math.Log(myAVLTREE.Count() + 1, 2) <= myAVLTREE.Height(), Is.EqualTo(true));
}