/* -*- mode: C++; indent-tabs-mode: nil; -*-

  *

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

  *

  * Copyright (C) 2003-2009

  * 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 <vector>

 #include "test_tools.h"

 #include <lemon/maps.h>

 #include <lemon/kruskal.h>

 #include <lemon/list_graph.h>

 #include <lemon/concepts/maps.h>

 #include <lemon/concepts/digraph.h>

 #include <lemon/concepts/graph.h>

 using namespace std;

 using namespace lemon;

 void checkCompileKruskal()

 {

   concepts::WriteMap<concepts::Digraph::Arc,bool> w;

   concepts::WriteMap<concepts::Graph::Edge,bool> uw;

   concepts::ReadMap<concepts::Digraph::Arc,int> r;

   concepts::ReadMap<concepts::Graph::Edge,int> ur;

   concepts::Digraph g;

   concepts::Graph ug;

   kruskal(g, r, w);

   kruskal(ug, ur, uw);

   std::vector<std::pair<concepts::Digraph::Arc, int> > rs;

   std::vector<std::pair<concepts::Graph::Edge, int> > urs;

   kruskal(g, rs, w);

   kruskal(ug, urs, uw);

   std::vector<concepts::Digraph::Arc> ws;

   std::vector<concepts::Graph::Edge> uws;

   kruskal(g, r, ws.begin());

   kruskal(ug, ur, uws.begin());

 }

 int main() {

   typedef ListGraph::Node Node;

   typedef ListGraph::Edge Edge;

   typedef ListGraph::NodeIt NodeIt;

   typedef ListGraph::ArcIt ArcIt;

   ListGraph G;

   Node s=G.addNode();

   Node v1=G.addNode();

   Node v2=G.addNode();

   Node v3=G.addNode();

   Node v4=G.addNode();

   Node t=G.addNode();

   Edge e1 = G.addEdge(s, v1);

   Edge e2 = G.addEdge(s, v2);

   Edge e3 = G.addEdge(v1, v2);

   Edge e4 = G.addEdge(v2, v1);

   Edge e5 = G.addEdge(v1, v3);

   Edge e6 = G.addEdge(v3, v2);

   Edge e7 = G.addEdge(v2, v4);

   Edge e8 = G.addEdge(v4, v3);

   Edge e9 = G.addEdge(v3, t);

   Edge e10 = G.addEdge(v4, t);

   typedef ListGraph::EdgeMap<int> ECostMap;

   typedef ListGraph::EdgeMap<bool> EBoolMap;

   ECostMap edge_cost_map(G, 2);

   EBoolMap tree_map(G);

   //Test with const map.

   check(kruskal(G, ConstMap<ListGraph::Edge,int>(2), tree_map)==10,

         "Total cost should be 10");

   //Test with an edge map (filled with uniform costs).

   check(kruskal(G, edge_cost_map, tree_map)==10,

         "Total cost should be 10");

   edge_cost_map[e1] = -10;

   edge_cost_map[e2] = -9;

   edge_cost_map[e3] = -8;

   edge_cost_map[e4] = -7;

   edge_cost_map[e5] = -6;

   edge_cost_map[e6] = -5;

   edge_cost_map[e7] = -4;

   edge_cost_map[e8] = -3;

   edge_cost_map[e9] = -2;

   edge_cost_map[e10] = -1;

   vector<Edge> tree_edge_vec(5);

   //Test with a edge map and inserter.

   check(kruskal(G, edge_cost_map,

                  tree_edge_vec.begin())

         ==-31,

         "Total cost should be -31.");

   tree_edge_vec.clear();

   check(kruskal(G, edge_cost_map,

                 back_inserter(tree_edge_vec))

         ==-31,

         "Total cost should be -31.");

 //   tree_edge_vec.clear();

 //   //The above test could also be coded like this:

 //   check(kruskal(G,

 //                 makeKruskalMapInput(G, edge_cost_map),

 //                 makeKruskalSequenceOutput(back_inserter(tree_edge_vec)))

 //         ==-31,

 //         "Total cost should be -31.");

   check(tree_edge_vec.size()==5,"The tree should have 5 edges.");

   check(tree_edge_vec[0]==e1 &&

         tree_edge_vec[1]==e2 &&

         tree_edge_vec[2]==e5 &&

         tree_edge_vec[3]==e7 &&

         tree_edge_vec[4]==e9,

         "Wrong tree.");

   return 0;

 }