test/graph_utils_test.cc
author Alpar Juttner <alpar@cs.elte.hu>
Mon, 05 May 2008 11:41:30 +0200
changeset 155 5c3604513ed0
child 171 02f4d5d9bfd7
permissions -rw-r--r--
Update .hgignore
     1 /* -*- C++ -*-
     2  *
     3  * This file is a part of LEMON, a generic C++ optimization library
     4  *
     5  * Copyright (C) 2003-2008
     6  * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
     7  * (Egervary Research Group on Combinatorial Optimization, EGRES).
     8  *
     9  * Permission to use, modify and distribute this software is granted
    10  * provided that this copyright notice appears in all copies. For
    11  * precise terms see the accompanying LICENSE file.
    12  *
    13  * This software is provided "AS IS" with no warranty of any kind,
    14  * express or implied, and with no claim as to its suitability for any
    15  * purpose.
    16  *
    17  */
    18 
    19 #include <iostream>
    20 #include <vector>
    21 
    22 #include <lemon/graph_utils.h>
    23 
    24 #include <lemon/list_graph.h>
    25 #include <lemon/smart_graph.h>
    26 
    27 #include "test_tools.h"
    28 #include "graph_utils_test.h"
    29 
    30 
    31 using namespace lemon;
    32 
    33 template <class Graph>
    34 void checkSnapDeg() 
    35 {
    36   Graph g;
    37   typename Graph::Node n1=g.addNode();
    38   typename Graph::Node n2=g.addNode();
    39    
    40   InDegMap<Graph> ind(g);
    41  
    42   g.addArc(n1,n2);
    43   
    44   typename Graph::Snapshot snap(g);
    45   
    46   OutDegMap<Graph> outd(g);
    47   
    48   check(ind[n1]==0 && ind[n2]==1, "Wrong InDegMap value.");
    49   check(outd[n1]==1 && outd[n2]==0, "Wrong OutDegMap value.");
    50 
    51   g.addArc(n1,n2);
    52   g.addArc(n2,n1);
    53  
    54   check(ind[n1]==1 && ind[n2]==2, "Wrong InDegMap value.");
    55   check(outd[n1]==2 && outd[n2]==1, "Wrong OutDegMap value.");
    56 
    57   snap.restore();
    58 
    59   check(ind[n1]==0 && ind[n2]==1, "Wrong InDegMap value.");
    60   check(outd[n1]==1 && outd[n2]==0, "Wrong OutDegMap value.");
    61   
    62 }
    63 
    64 int main() {
    65   ///\file
    66   { // checking list graph
    67     checkDigraphCounters<ListDigraph>();
    68     checkFindArc<ListDigraph>();
    69   }
    70   { // checking smart graph
    71     checkDigraphCounters<SmartDigraph>();
    72     checkFindArc<SmartDigraph>();
    73   }
    74   {
    75     int num = 5;
    76     SmartDigraph fg;
    77     std::vector<SmartDigraph::Node> nodes;
    78     for (int i = 0; i < num; ++i) {
    79       nodes.push_back(fg.addNode());
    80     }
    81     for (int i = 0; i < num * num; ++i) {
    82       fg.addArc(nodes[i / num], nodes[i % num]);
    83     }
    84     check(countNodes(fg) == num, "FullGraph: wrong node number.");
    85     check(countArcs(fg) == num*num, "FullGraph: wrong arc number.");
    86     for (SmartDigraph::NodeIt src(fg); src != INVALID; ++src) {
    87       for (SmartDigraph::NodeIt trg(fg); trg != INVALID; ++trg) {
    88 	ConArcIt<SmartDigraph> con(fg, src, trg);
    89 	check(con != INVALID, "There is no connecting arc.");
    90 	check(fg.source(con) == src, "Wrong source.");
    91 	check(fg.target(con) == trg, "Wrong target.");
    92 	check(++con == INVALID, "There is more connecting arc.");
    93       }
    94     }
    95     AllArcLookUp<SmartDigraph> el(fg);
    96     for (SmartDigraph::NodeIt src(fg); src != INVALID; ++src) {
    97       for (SmartDigraph::NodeIt trg(fg); trg != INVALID; ++trg) {
    98 	SmartDigraph::Arc con = el(src, trg);
    99 	check(con != INVALID, "There is no connecting arc.");
   100 	check(fg.source(con) == src, "Wrong source.");
   101 	check(fg.target(con) == trg, "Wrong target.");
   102 	check(el(src,trg,con) == INVALID, "There is more connecting arc.");
   103       }
   104     }
   105   }
   106 
   107   //check In/OutDegMap (and Snapshot feature)
   108 
   109   checkSnapDeg<ListDigraph>();
   110   checkSnapDeg<SmartDigraph>();
   111   
   112   {
   113     const int nodeNum = 10;
   114     const int arcNum = 100;
   115     ListDigraph digraph;
   116     InDegMap<ListDigraph> inDeg(digraph);
   117     OutDegMap<ListDigraph> outDeg(digraph);
   118     std::vector<ListDigraph::Node> nodes(nodeNum);
   119     for (int i = 0; i < nodeNum; ++i) {
   120       nodes[i] = digraph.addNode();
   121     }
   122     std::vector<ListDigraph::Arc> arcs(arcNum);
   123     for (int i = 0; i < arcNum; ++i) {
   124       arcs[i] = 
   125 	digraph.addArc(nodes[rnd[nodeNum]], nodes[rnd[nodeNum]]);
   126     }
   127     for (int i = 0; i < nodeNum; ++i) {
   128       check(inDeg[nodes[i]] == countInArcs(digraph, nodes[i]), 
   129 	    "Wrong in degree map");
   130     }
   131     for (int i = 0; i < nodeNum; ++i) {
   132       check(outDeg[nodes[i]] == countOutArcs(digraph, nodes[i]), 
   133 	    "Wrong in degree map");
   134     }
   135   }
   136 
   137   ///Everything is OK
   138   std::cout << __FILE__ ": All tests passed.\n";
   139 
   140   return 0;
   141 }