public void TestBSTIndexOf()
{
var tree = new BinarySearchTree<int>() { 40, 11, 62, 43, 34, 16, 10, 63 };
Assert.AreEqual(0, tree.IndexOf(tree.Root), "Checking that root is in the 0. place.");
Assert.AreEqual(4, tree.IndexOf(16), "Checking 16 is in the 4. place.");
}