1 | /* -*- C++ -*- |
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2 | * test/bfs_test.cc - Part of LEMON, a generic C++ optimization library |
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3 | * |
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4 | * Copyright (C) 2005 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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5 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
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6 | * |
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7 | * Permission to use, modify and distribute this software is granted |
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8 | * provided that this copyright notice appears in all copies. For |
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9 | * precise terms see the accompanying LICENSE file. |
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10 | * |
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11 | * This software is provided "AS IS" with no warranty of any kind, |
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12 | * express or implied, and with no claim as to its suitability for any |
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13 | * purpose. |
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14 | * |
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15 | */ |
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16 | |
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17 | #include "test_tools.h" |
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18 | #include <lemon/smart_graph.h> |
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19 | #include <lemon/bfs.h> |
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20 | #include <lemon/path.h> |
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21 | #include<lemon/concept/graph.h> |
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22 | |
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23 | using namespace lemon; |
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24 | |
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25 | const int PET_SIZE =5; |
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26 | |
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27 | |
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28 | void check_Bfs_Compile() |
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29 | { |
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30 | typedef concept::StaticGraph Graph; |
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31 | |
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32 | typedef Graph::Edge Edge; |
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33 | typedef Graph::Node Node; |
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34 | typedef Graph::EdgeIt EdgeIt; |
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35 | typedef Graph::NodeIt NodeIt; |
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36 | |
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37 | typedef Bfs<Graph> BType; |
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38 | |
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39 | Graph G; |
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40 | Node n; |
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41 | Edge e; |
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42 | int l; |
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43 | bool b; |
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44 | BType::DistMap d(G); |
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45 | BType::PredMap p(G); |
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46 | // BType::PredNodeMap pn(G); |
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47 | |
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48 | BType bfs_test(G); |
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49 | |
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50 | bfs_test.run(n); |
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51 | |
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52 | l = bfs_test.dist(n); |
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53 | e = bfs_test.predEdge(n); |
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54 | n = bfs_test.predNode(n); |
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55 | d = bfs_test.distMap(); |
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56 | p = bfs_test.predMap(); |
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57 | // pn = bfs_test.predNodeMap(); |
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58 | b = bfs_test.reached(n); |
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59 | |
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60 | DirPath<Graph> pp(G); |
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61 | bfs_test.getPath(pp,n); |
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62 | } |
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63 | |
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64 | void check_Bfs_Function_Compile() |
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65 | { |
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66 | typedef int VType; |
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67 | typedef concept::StaticGraph Graph; |
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68 | |
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69 | typedef Graph::Edge Edge; |
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70 | typedef Graph::Node Node; |
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71 | typedef Graph::EdgeIt EdgeIt; |
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72 | typedef Graph::NodeIt NodeIt; |
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73 | typedef concept::ReadMap<Edge,VType> LengthMap; |
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74 | |
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75 | bfs(Graph(),Node()).run(); |
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76 | bfs(Graph()).source(Node()).run(); |
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77 | bfs(Graph()) |
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78 | .predMap(concept::WriteMap<Node,Edge>()) |
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79 | .distMap(concept::WriteMap<Node,VType>()) |
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80 | .reachedMap(concept::ReadWriteMap<Node,bool>()) |
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81 | .processedMap(concept::WriteMap<Node,bool>()) |
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82 | .run(Node()); |
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83 | |
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84 | } |
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85 | |
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86 | int main() |
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87 | { |
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88 | |
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89 | typedef SmartGraph Graph; |
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90 | |
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91 | typedef Graph::Edge Edge; |
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92 | typedef Graph::Node Node; |
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93 | typedef Graph::EdgeIt EdgeIt; |
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94 | typedef Graph::NodeIt NodeIt; |
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95 | typedef Graph::EdgeMap<int> LengthMap; |
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96 | |
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97 | Graph G; |
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98 | Node s, t; |
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99 | PetStruct<Graph> ps = addPetersen(G,PET_SIZE); |
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100 | |
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101 | s=ps.outer[2]; |
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102 | t=ps.inner[0]; |
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103 | |
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104 | Bfs<Graph> bfs_test(G); |
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105 | bfs_test.run(s); |
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106 | |
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107 | check(bfs_test.dist(t)==3,"Bfs found a wrong path. " << bfs_test.dist(t)); |
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108 | |
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109 | DirPath<Graph> p(G); |
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110 | check(bfs_test.getPath(p,t),"getPath() failed to set the path."); |
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111 | check(p.length()==3,"getPath() found a wrong path."); |
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112 | |
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113 | |
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114 | for(EdgeIt e(G); e==INVALID; ++e) { |
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115 | Node u=G.source(e); |
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116 | Node v=G.target(e); |
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117 | check( !bfs_test.reached(u) || |
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118 | (bfs_test.dist(v) > bfs_test.dist(u)+1), |
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119 | "Wrong output."); |
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120 | } |
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121 | |
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122 | for(NodeIt v(G); v==INVALID; ++v) { |
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123 | check(bfs_test.reached(v),"Each node should be reached."); |
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124 | if ( bfs_test.predEdge(v)!=INVALID ) { |
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125 | Edge e=bfs_test.predEdge(v); |
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126 | Node u=G.source(e); |
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127 | check(u==bfs_test.predNode(v),"Wrong tree."); |
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128 | check(bfs_test.dist(v) - bfs_test.dist(u) == 1, |
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129 | "Wrong distance. Difference: " |
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130 | << std::abs(bfs_test.dist(v) - bfs_test.dist(u) |
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131 | - 1)); |
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132 | } |
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133 | } |
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134 | } |
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135 | |
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