/* -*- C++ -*-

 * test/unionfind_test.cc - Part of LEMON, a generic C++ optimization library

 *

 * Copyright (C) 2005 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/maps.h>

#include <lemon/unionfind.h>

#include "test_tools.h"

using namespace lemon;

using namespace std;

template <typename T>

class BaseMap : public StdMap<int,T> {};

typedef UnionFindEnum<int, BaseMap> UFE;

void print(UFE const &ufe) {

  UFE::ClassIt cit;

  cout << "Print the classes of the structure:" << endl;

  int i = 1;

  for (ufe.first(cit); ufe.valid(cit); ufe.next(cit)) {

    cout << "  " << i << " (" << cit << "):" << flush;

    UFE::ItemIt iit;

    for (ufe.first(iit, cit); ufe.valid(iit); ufe.next(iit)) {

      cout << " " << iit << flush;

    }

    cout << endl;

    i++;

  }

  cout << "done" << endl;

}

int main() {

  UFE::MapType base;

  UFE U(base);

  U.insert(1);

  U.insert(2);

  check(U.join(1,2),"Test failed.");

  U.insert(3);

  U.insert(4);

  U.insert(5);

  U.insert(6);

  U.insert(7);

  check(U.join(1,4),"Test failed.");

  check(!U.join(2,4),"Test failed.");

  check(U.join(3,5),"Test failed.");

  U.insert(8,5);

  check(U.size(4) == 3,"Test failed.");

  check(U.size(5) == 3,"Test failed.");

  check(U.size(6) == 1,"Test failed.");

  check(U.size(2) == 3,"Test failed.");

  U.insert(9);

  U.insert(10,9);

  check(U.join(8,10),"Test failed.");

  check(U.move(9,4),"Test failed.");

  check(!U.move(9,2),"Test failed.");

  check(U.size(4) == 4,"Test failed.");

  check(U.size(9) == 4,"Test failed.");

  check(U.move(5,6),"Test failed.");

  check(U.size(5) == 2,"Test failed.");

  check(U.size(8) == 3,"Test failed.");

  check(U.move(7,10),"Test failed.");

  check(U.size(7) == 4,"Test failed.");

  U.erase(9);

  U.erase(1);

  check(U.size(4) == 2,"Test failed.");

  check(U.size(2) == 2,"Test failed.");

  U.erase(1);

  U.erase(6);

  U.split(8);

  check(U.size(4) == 2,"Test failed.");

  check(U.size(3) == 1,"Test failed.");

  check(U.size(2) == 2,"Test failed.");

  check(U.join(3,4),"Test failed.");

  check(!U.join(2,4),"Test failed.");

  check(U.size(4) == 3,"Test failed.");

  check(U.size(3) == 3,"Test failed.");

  check(U.size(2) == 3,"Test failed.");

  U.makeRep(4);

  U.makeRep(3);

  U.makeRep(2);

  check(U.size(4) == 3,"Test failed.");

  check(U.size(3) == 3,"Test failed.");

  check(U.size(2) == 3,"Test failed.");

  U.eraseClass(4);

  U.eraseClass(7);

}