/* -*- C++ -*-

  *

  * This file is a part of LEMON, a generic C++ optimization library

  *

  * Copyright (C) 2003-2008

  * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport

  * (Egervary Research Group on Combinatorial Optimization, EGRES).

  *

  * Permission to use, modify and distribute this software is granted

  * provided that this copyright notice appears in all copies. For

  * precise terms see the accompanying LICENSE file.

  *

  * This software is provided "AS IS" with no warranty of any kind,

  * express or implied, and with no claim as to its suitability for any

  * purpose.

  *

  */

 #include <iostream>

 #include <lemon/list_graph.h>

 #include <lemon/maps.h>

 #include <lemon/unionfind.h>

 #include "test_tools.h"

 using namespace lemon;

 using namespace std;

 typedef UnionFindEnum<ListGraph::NodeMap<int> > UFE;

 int main() {

   ListGraph g;

   ListGraph::NodeMap<int> base(g);

   UFE U(base);

   vector<ListGraph::Node> n;

   for(int i=0;i<20;i++) n.push_back(g.addNode());

   U.insert(n[1]);

   U.insert(n[2]);

   check(U.join(n[1],n[2]) != -1,"Test failed.");

   U.insert(n[3]);

   U.insert(n[4]);

   U.insert(n[5]);

   U.insert(n[6]);

   U.insert(n[7]);

   check(U.join(n[1],n[4]) != -1,"Test failed.");

   check(U.join(n[2],n[4]) == -1,"Test failed.");

   check(U.join(n[3],n[5]) != -1,"Test failed.");

   U.insert(n[8],U.find(n[5]));

   check(U.size(U.find(n[4])) == 3,"Test failed.");

   check(U.size(U.find(n[5])) == 3,"Test failed.");

   check(U.size(U.find(n[6])) == 1,"Test failed.");

   check(U.size(U.find(n[2])) == 3,"Test failed.");

   U.insert(n[9]);

   U.insert(n[10],U.find(n[9]));

   check(U.join(n[8],n[10]) != -1,"Test failed.");

   check(U.size(U.find(n[4])) == 3,"Test failed.");

   check(U.size(U.find(n[9])) == 5,"Test failed.");

   check(U.size(U.find(n[8])) == 5,"Test failed.");

   U.erase(n[9]);

   U.erase(n[1]);

   check(U.size(U.find(n[10])) == 4,"Test failed.");

   check(U.size(U.find(n[2])) == 2,"Test failed.");

   U.erase(n[6]);

   U.split(U.find(n[8]));

   check(U.size(U.find(n[4])) == 2,"Test failed.");

   check(U.size(U.find(n[3])) == 1,"Test failed.");

   check(U.size(U.find(n[2])) == 2,"Test failed.");

   check(U.join(n[3],n[4]) != -1,"Test failed.");

   check(U.join(n[2],n[4]) == -1,"Test failed.");

   check(U.size(U.find(n[4])) == 3,"Test failed.");

   check(U.size(U.find(n[3])) == 3,"Test failed.");

   check(U.size(U.find(n[2])) == 3,"Test failed.");

   U.eraseClass(U.find(n[4]));

   U.eraseClass(U.find(n[7]));

   return 0;

 }