1 | /* -*- C++ -*- |
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2 | * |
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3 | * This file is a part of LEMON, a generic C++ optimization library |
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4 | * |
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5 | * Copyright (C) 2003-2006 |
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6 | * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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7 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
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8 | * |
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9 | * Permission to use, modify and distribute this software is granted |
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10 | * provided that this copyright notice appears in all copies. For |
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11 | * precise terms see the accompanying LICENSE file. |
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12 | * |
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13 | * This software is provided "AS IS" with no warranty of any kind, |
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14 | * express or implied, and with no claim as to its suitability for any |
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15 | * purpose. |
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16 | * |
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17 | */ |
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18 | |
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19 | #ifndef LEMON_TEST_TEST_TOOLS_H |
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20 | #define LEMON_TEST_TEST_TOOLS_H |
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21 | |
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22 | #include <iostream> |
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23 | #include <vector> |
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24 | |
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25 | #include <cstdlib> |
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26 | #include <ctime> |
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27 | |
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28 | #include <lemon/invalid.h> |
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29 | #include <lemon/concept_check.h> |
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30 | |
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31 | using namespace lemon; |
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32 | |
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33 | //! \ingroup misc |
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34 | //! \file |
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35 | //! \brief Some utilities to write test programs. |
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36 | |
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37 | |
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38 | ///If \c rc is fail, writes an error message end exit. |
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39 | |
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40 | ///If \c rc is fail, writes an error message end exit. |
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41 | ///The error message contains the file name and the line number of the |
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42 | ///source code in a standard from, which makes it possible to go there |
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43 | ///using good source browsers like e.g. \c emacs. |
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44 | /// |
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45 | ///For example |
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46 | ///\code check(0==1,"This is obviously false.");\endcode will |
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47 | ///print this (and then exits). |
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48 | ///\verbatim graph_test.cc:123: error: This is obviously false. \endverbatim |
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49 | /// |
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50 | ///\todo It should be in \c error.h |
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51 | #define check(rc, msg) \ |
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52 | if(!(rc)) { \ |
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53 | std::cerr << __FILE__ ":" << __LINE__ << ": error: " << msg << std::endl; \ |
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54 | exit(1); \ |
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55 | } else { } \ |
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56 | |
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57 | ///Structure returned by \ref addPetersen(). |
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58 | |
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59 | ///Structure returned by \ref addPetersen(). |
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60 | /// |
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61 | template<class Graph> struct PetStruct |
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62 | { |
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63 | ///Vector containing the outer nodes. |
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64 | std::vector<typename Graph::Node> outer; |
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65 | ///Vector containing the inner nodes. |
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66 | std::vector<typename Graph::Node> inner; |
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67 | ///Vector containing the edges of the inner circle. |
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68 | std::vector<typename Graph::Edge> incir; |
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69 | ///Vector containing the edges of the outer circle. |
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70 | std::vector<typename Graph::Edge> outcir; |
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71 | ///Vector containing the chord edges. |
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72 | std::vector<typename Graph::Edge> chords; |
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73 | }; |
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74 | |
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75 | |
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76 | |
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77 | ///Adds a Petersen graph to \c G. |
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78 | |
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79 | ///Adds a Petersen graph to \c G. |
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80 | ///\return The nodes and edges of the generated graph. |
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81 | |
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82 | template<typename Graph> |
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83 | PetStruct<Graph> addPetersen(Graph &G,int num = 5) |
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84 | { |
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85 | PetStruct<Graph> n; |
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86 | |
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87 | for(int i=0;i<num;i++) { |
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88 | n.outer.push_back(G.addNode()); |
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89 | n.inner.push_back(G.addNode()); |
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90 | } |
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91 | |
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92 | for(int i=0;i<num;i++) { |
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93 | n.chords.push_back(G.addEdge(n.outer[i],n.inner[i])); |
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94 | n.outcir.push_back(G.addEdge(n.outer[i],n.outer[(i+1) % num])); |
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95 | n.incir.push_back(G.addEdge(n.inner[i],n.inner[(i+2) % num])); |
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96 | } |
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97 | return n; |
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98 | } |
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99 | |
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100 | /// \brief Adds to the graph the reverse pair of all edges. |
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101 | /// |
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102 | /// Adds to the graph the reverse pair of all edges. |
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103 | /// |
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104 | template<class Graph> void bidirGraph(Graph &G) |
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105 | { |
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106 | typedef typename Graph::Edge Edge; |
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107 | typedef typename Graph::EdgeIt EdgeIt; |
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108 | |
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109 | std::vector<Edge> ee; |
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110 | |
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111 | for(EdgeIt e(G);e!=INVALID;++e) ee.push_back(e); |
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112 | |
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113 | for(typename std::vector<Edge>::iterator p=ee.begin();p!=ee.end();p++) |
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114 | G.addEdge(G.target(*p),G.source(*p)); |
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115 | } |
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116 | |
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117 | |
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118 | /// \brief Checks the bidirectioned Petersen graph. |
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119 | /// |
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120 | /// Checks the bidirectioned Petersen graph. |
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121 | /// |
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122 | template<class Graph> void checkBidirPetersen(Graph &G, int num = 5) |
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123 | { |
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124 | typedef typename Graph::Node Node; |
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125 | |
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126 | typedef typename Graph::EdgeIt EdgeIt; |
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127 | typedef typename Graph::NodeIt NodeIt; |
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128 | |
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129 | checkGraphNodeList(G, 2 * num); |
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130 | checkGraphEdgeList(G, 6 * num); |
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131 | |
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132 | for(NodeIt n(G);n!=INVALID;++n) { |
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133 | checkGraphInEdgeList(G, n, 3); |
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134 | checkGraphOutEdgeList(G, n, 3); |
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135 | } |
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136 | } |
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137 | |
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138 | ///Structure returned by \ref addUPetersen(). |
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139 | |
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140 | ///Structure returned by \ref addUPetersen(). |
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141 | /// |
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142 | template<class Graph> struct UPetStruct |
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143 | { |
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144 | ///Vector containing the outer nodes. |
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145 | std::vector<typename Graph::Node> outer; |
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146 | ///Vector containing the inner nodes. |
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147 | std::vector<typename Graph::Node> inner; |
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148 | ///Vector containing the edges of the inner circle. |
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149 | std::vector<typename Graph::UEdge> incir; |
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150 | ///Vector containing the edges of the outer circle. |
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151 | std::vector<typename Graph::UEdge> outcir; |
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152 | ///Vector containing the chord edges. |
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153 | std::vector<typename Graph::UEdge> chords; |
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154 | }; |
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155 | |
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156 | ///Adds a Petersen graph to the undirected \c G. |
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157 | |
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158 | ///Adds a Petersen graph to the undirected \c G. |
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159 | ///\return The nodes and edges of the generated graph. |
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160 | |
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161 | template<typename Graph> |
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162 | UPetStruct<Graph> addUPetersen(Graph &G,int num=5) |
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163 | { |
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164 | UPetStruct<Graph> n; |
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165 | |
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166 | for(int i=0;i<num;i++) { |
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167 | n.outer.push_back(G.addNode()); |
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168 | n.inner.push_back(G.addNode()); |
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169 | } |
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170 | |
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171 | for(int i=0;i<num;i++) { |
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172 | n.chords.push_back(G.addEdge(n.outer[i],n.inner[i])); |
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173 | n.outcir.push_back(G.addEdge(n.outer[i],n.outer[(i+1)%5])); |
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174 | n.incir.push_back(G.addEdge(n.inner[i],n.inner[(i+2)%5])); |
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175 | } |
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176 | return n; |
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177 | } |
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178 | |
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179 | int _urandom_init() { |
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180 | int seed = time(0); |
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181 | srand(seed); |
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182 | return seed; |
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183 | } |
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184 | |
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185 | int urandom(int n) { |
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186 | static int seed = _urandom_init(); |
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187 | ignore_unused_variable_warning(seed); |
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188 | return (int)(rand() / (1.0 + RAND_MAX) * n); |
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189 | } |
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190 | |
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191 | #endif |
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