test/test_tools.h
changeset 127 1c9a9e2f7d4d
parent 39 0a01d811071f
child 171 02f4d5d9bfd7
equal deleted inserted replaced
1:0a028e6001d7 2:a43cfc6b1d69
    18 
    18 
    19 #ifndef LEMON_TEST_TEST_TOOLS_H
    19 #ifndef LEMON_TEST_TEST_TOOLS_H
    20 #define LEMON_TEST_TEST_TOOLS_H
    20 #define LEMON_TEST_TEST_TOOLS_H
    21 
    21 
    22 #include <iostream>
    22 #include <iostream>
       
    23 #include <vector>
       
    24 
       
    25 #include <cstdlib>
       
    26 #include <ctime>
       
    27 
       
    28 #include <lemon/concept_check.h>
       
    29 #include <lemon/concepts/digraph.h>
       
    30 
       
    31 #include <lemon/random.h>
       
    32 
       
    33 using namespace lemon;
    23 
    34 
    24 //! \ingroup misc
    35 //! \ingroup misc
    25 //! \file
    36 //! \file
    26 //! \brief Some utilities to write test programs.
    37 //! \brief Some utilities to write test programs.
    27 
    38 
    34 ///using good source browsers like e.g. \c emacs.
    45 ///using good source browsers like e.g. \c emacs.
    35 ///
    46 ///
    36 ///For example
    47 ///For example
    37 ///\code check(0==1,"This is obviously false.");\endcode will
    48 ///\code check(0==1,"This is obviously false.");\endcode will
    38 ///print this (and then exits).
    49 ///print this (and then exits).
    39 ///\verbatim graph_test.cc:123: error: This is obviously false. \endverbatim
    50 ///\verbatim digraph_test.cc:123: error: This is obviously false. \endverbatim
    40 ///
    51 ///
    41 ///\todo It should be in \c error.h
    52 ///\todo It should be in \c error.h
    42 #define check(rc, msg) \
    53 #define check(rc, msg) \
    43   if(!(rc)) { \
    54   if(!(rc)) { \
    44     std::cerr << __FILE__ ":" << __LINE__ << ": error: " << msg << std::endl; \
    55     std::cerr << __FILE__ ":" << __LINE__ << ": error: " << msg << std::endl; \
    45     abort(); \
    56     abort(); \
    46   } else { } \
    57   } else { } \
    47 
    58 
       
    59 ///Structure returned by \ref addPetersen().
       
    60 
       
    61 ///Structure returned by \ref addPetersen().
       
    62 ///
       
    63 template<class Digraph> struct PetStruct
       
    64 {
       
    65   ///Vector containing the outer nodes.
       
    66   std::vector<typename Digraph::Node> outer;
       
    67   ///Vector containing the inner nodes.
       
    68   std::vector<typename Digraph::Node> inner;
       
    69   ///Vector containing the arcs of the inner circle.
       
    70   std::vector<typename Digraph::Arc> incir;
       
    71   ///Vector containing the arcs of the outer circle.
       
    72   std::vector<typename Digraph::Arc> outcir;
       
    73   ///Vector containing the chord arcs.
       
    74   std::vector<typename Digraph::Arc> chords;
       
    75 };
       
    76 
       
    77 
       
    78 
       
    79 ///Adds a Petersen digraph to \c G.
       
    80 
       
    81 ///Adds a Petersen digraph to \c G.
       
    82 ///\return The nodes and arcs of the generated digraph.
       
    83 
       
    84 template<typename Digraph>
       
    85 PetStruct<Digraph> addPetersen(Digraph &G,int num = 5)
       
    86 {
       
    87   PetStruct<Digraph> n;
       
    88 
       
    89   for(int i=0;i<num;i++) {
       
    90     n.outer.push_back(G.addNode());
       
    91     n.inner.push_back(G.addNode());
       
    92   }
       
    93 
       
    94  for(int i=0;i<num;i++) {
       
    95    n.chords.push_back(G.addArc(n.outer[i],n.inner[i]));
       
    96    n.outcir.push_back(G.addArc(n.outer[i],n.outer[(i+1) % num]));
       
    97    n.incir.push_back(G.addArc(n.inner[i],n.inner[(i+2) % num]));
       
    98   }
       
    99  return n;
       
   100 }
       
   101 
       
   102 /// \brief Adds to the digraph the reverse pair of all arcs.
       
   103 ///
       
   104 /// Adds to the digraph the reverse pair of all arcs.
       
   105 ///
       
   106 template<class Digraph> void bidirDigraph(Digraph &G)
       
   107 {
       
   108   typedef typename Digraph::Arc Arc;
       
   109   typedef typename Digraph::ArcIt ArcIt;
       
   110   
       
   111   std::vector<Arc> ee;
       
   112   
       
   113   for(ArcIt e(G);e!=INVALID;++e) ee.push_back(e);
       
   114 
       
   115   for(typename std::vector<Arc>::iterator p=ee.begin();p!=ee.end();p++)
       
   116     G.addArc(G.target(*p),G.source(*p));
       
   117 }
       
   118 
       
   119 
       
   120 /// \brief Checks the bidirectioned Petersen digraph.
       
   121 ///
       
   122 ///  Checks the bidirectioned Petersen digraph.
       
   123 ///
       
   124 template<class Digraph> void checkBidirPetersen(Digraph &G, int num = 5)
       
   125 {
       
   126   typedef typename Digraph::Node Node;
       
   127 
       
   128   typedef typename Digraph::ArcIt ArcIt;
       
   129   typedef typename Digraph::NodeIt NodeIt;
       
   130 
       
   131   checkDigraphNodeList(G, 2 * num);
       
   132   checkDigraphArcList(G, 6 * num);
       
   133 
       
   134   for(NodeIt n(G);n!=INVALID;++n) {
       
   135     checkDigraphInArcList(G, n, 3);
       
   136     checkDigraphOutArcList(G, n, 3);
       
   137   }  
       
   138 }
       
   139 
       
   140 ///Structure returned by \ref addUPetersen().
       
   141 
       
   142 ///Structure returned by \ref addUPetersen().
       
   143 ///
       
   144 template<class Digraph> struct UPetStruct
       
   145 {
       
   146   ///Vector containing the outer nodes.
       
   147   std::vector<typename Digraph::Node> outer;
       
   148   ///Vector containing the inner nodes.
       
   149   std::vector<typename Digraph::Node> inner;
       
   150   ///Vector containing the arcs of the inner circle.
       
   151   std::vector<typename Digraph::Edge> incir;
       
   152   ///Vector containing the arcs of the outer circle.
       
   153   std::vector<typename Digraph::Edge> outcir;
       
   154   ///Vector containing the chord arcs.
       
   155   std::vector<typename Digraph::Edge> chords;
       
   156 };
       
   157 
       
   158 ///Adds a Petersen digraph to the undirected \c G.
       
   159 
       
   160 ///Adds a Petersen digraph to the undirected \c G.
       
   161 ///\return The nodes and arcs of the generated digraph.
       
   162 
       
   163 template<typename Digraph>
       
   164 UPetStruct<Digraph> addUPetersen(Digraph &G,int num=5)
       
   165 {
       
   166   UPetStruct<Digraph> n;
       
   167 
       
   168   for(int i=0;i<num;i++) {
       
   169     n.outer.push_back(G.addNode());
       
   170     n.inner.push_back(G.addNode());
       
   171   }
       
   172 
       
   173  for(int i=0;i<num;i++) {
       
   174    n.chords.push_back(G.addArc(n.outer[i],n.inner[i]));
       
   175    n.outcir.push_back(G.addArc(n.outer[i],n.outer[(i+1)%5]));
       
   176    n.incir.push_back(G.addArc(n.inner[i],n.inner[(i+2)%5]));
       
   177  }
       
   178  return n;
       
   179 }
       
   180 
    48 #endif
   181 #endif