public void RTree_Insertion_Test()
{
var nodeCount = 1000;
var randomPolygons = new HashSet <Polygon>();
for (int i = 0; i < nodeCount; i++)
{
randomPolygons.Add(getRandomPointOrPolygon());
}
var order = 5;
var tree = new RTree(order);
int j = 0;
foreach (var polygon in randomPolygons)
{
tree.Insert(polygon);
//IEnumerable test
Assert.AreEqual(tree.Count, tree.Count());
//height should be similar to that of B+ tree.
//https://en.wikipedia.org/wiki/B-tree#Best_case_and_worst_case_heights
var theoreticalMaxHeight = Math.Ceiling(Math.Log((j + 2) / 2, (int)Math.Ceiling((double)order / 2))) + 1;
var actualMaxHeight = tree.Root.Height;
Assert.AreEqual(verifyHeightUniformityAndReturnHeight(tree.Root, order), actualMaxHeight);
Assert.IsTrue(actualMaxHeight <= theoreticalMaxHeight);
j++;
Assert.IsTrue(tree.Exists(polygon));
}
Assert.AreEqual(j, tree.Count);
}
public void RTree_Deletion_Test()
{
var nodeCount = 1000;
var randomPolygons = new System.Collections.Generic.HashSet <Polygon>();
for (int i = 0; i < nodeCount; i++)
{
randomPolygons.Add(getRandomPointOrPolygon());
}
var order = 5;
var tree = new RTree(order);
foreach (var polygon in randomPolygons)
{
tree.Insert(polygon);
}
int j = randomPolygons.Count;
foreach (var polygon in randomPolygons)
{
tree.Delete(polygon);
Assert.IsFalse(tree.Exists(polygon));
j--;
if (j > 0)
{
var actualMaxHeight = tree.Root.Height;
Assert.AreEqual(verifyHeightUniformityAndReturnHeight(tree.Root, order), actualMaxHeight);
Assert.AreEqual(j, tree.Count);
}
}
}
