1 | /* -*- C++ -*- |
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2 | * src/test/bfs_test.cc - Part of LEMON, a generic C++ optimization library |
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3 | * |
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4 | * Copyright (C) 2004 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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5 | * (Egervary Combinatorial Optimization Research Group, 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/skeletons/graph.h> |
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21 | |
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22 | using namespace lemon; |
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23 | |
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24 | const int PET_SIZE =5; |
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25 | |
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26 | |
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27 | void check_Bfs_Compile() |
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28 | { |
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29 | typedef skeleton::StaticGraph Graph; |
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30 | |
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31 | typedef Graph::Edge Edge; |
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32 | typedef Graph::Node Node; |
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33 | typedef Graph::EdgeIt EdgeIt; |
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34 | typedef Graph::NodeIt NodeIt; |
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35 | |
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36 | typedef Bfs<Graph> BType; |
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37 | |
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38 | Graph G; |
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39 | Node n; |
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40 | Edge e; |
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41 | int l; |
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42 | bool b; |
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43 | BType::DistMap d(G); |
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44 | BType::PredMap p(G); |
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45 | BType::PredNodeMap pn(G); |
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46 | |
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47 | BType bfs_test(G); |
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48 | |
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49 | bfs_test.run(n); |
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50 | |
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51 | l = bfs_test.dist(n); |
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52 | e = bfs_test.pred(n); |
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53 | n = bfs_test.predNode(n); |
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54 | d = bfs_test.distMap(); |
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55 | p = bfs_test.predMap(); |
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56 | pn = bfs_test.predNodeMap(); |
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57 | b = bfs_test.reached(n); |
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58 | |
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59 | } |
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60 | |
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61 | int main() |
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62 | { |
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63 | |
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64 | typedef SmartGraph Graph; |
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65 | |
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66 | typedef Graph::Edge Edge; |
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67 | typedef Graph::Node Node; |
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68 | typedef Graph::EdgeIt EdgeIt; |
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69 | typedef Graph::NodeIt NodeIt; |
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70 | typedef Graph::EdgeMap<int> LengthMap; |
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71 | |
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72 | Graph G; |
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73 | Node s, t; |
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74 | PetStruct<Graph> ps = addPetersen(G,PET_SIZE); |
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75 | |
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76 | s=ps.outer[2]; |
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77 | t=ps.inner[0]; |
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78 | |
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79 | Bfs<Graph> bfs_test(G); |
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80 | bfs_test.run(s); |
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81 | |
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82 | check(bfs_test.dist(t)==3,"Bfs found a wrong path. " << bfs_test.dist(t)); |
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83 | |
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84 | |
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85 | for(EdgeIt e(G); e==INVALID; ++e) { |
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86 | Node u=G.tail(e); |
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87 | Node v=G.head(e); |
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88 | check( !bfs_test.reached(u) || |
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89 | (bfs_test.dist(v) > bfs_test.dist(u)+1), |
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90 | "Wrong output."); |
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91 | } |
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92 | |
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93 | for(NodeIt v(G); v==INVALID; ++v) { |
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94 | check(bfs_test.reached(v),"Each node should be reached."); |
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95 | if ( bfs_test.pred(v)!=INVALID ) { |
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96 | Edge e=bfs_test.pred(v); |
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97 | Node u=G.tail(e); |
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98 | check(u==bfs_test.predNode(v),"Wrong tree."); |
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99 | check(bfs_test.dist(v) - bfs_test.dist(u) == 1, |
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100 | "Wrong distance. Difference: " |
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101 | << std::abs(bfs_test.dist(v) - bfs_test.dist(u) |
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102 | - 1)); |
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103 | } |
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104 | } |
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105 | } |
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106 | |
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