test/dfs_test.cc
changeset 158 500f3cbff9e4
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     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 "test_tools.h"
       
    20 // #include <lemon/smart_graph.h>
       
    21 #include <lemon/list_graph.h>
       
    22 #include <lemon/dfs.h>
       
    23 #include <lemon/path.h>
       
    24 #include <lemon/concepts/digraph.h>
       
    25 
       
    26 using namespace lemon;
       
    27 
       
    28 const int PET_SIZE =5;
       
    29 
       
    30 
       
    31 void check_Dfs_SmartDigraph_Compile() 
       
    32 {
       
    33   typedef concepts::Digraph Digraph;
       
    34 
       
    35   typedef Digraph::Arc Arc;
       
    36   typedef Digraph::Node Node;
       
    37   typedef Digraph::ArcIt ArcIt;
       
    38   typedef Digraph::NodeIt NodeIt;
       
    39  
       
    40   typedef Dfs<Digraph> DType;
       
    41   
       
    42   Digraph G;
       
    43   Node n;
       
    44   Arc e;
       
    45   int l;
       
    46   bool b;
       
    47   DType::DistMap d(G);
       
    48   DType::PredMap p(G);
       
    49   //  DType::PredNodeMap pn(G);
       
    50   
       
    51   DType dfs_test(G);
       
    52   
       
    53   dfs_test.run(n);
       
    54   
       
    55   l  = dfs_test.dist(n);
       
    56   e  = dfs_test.predArc(n);
       
    57   n  = dfs_test.predNode(n);
       
    58   d  = dfs_test.distMap();
       
    59   p  = dfs_test.predMap();
       
    60   //  pn = dfs_test.predNodeMap();
       
    61   b  = dfs_test.reached(n);
       
    62 
       
    63   Path<Digraph> pp = dfs_test.path(n);
       
    64 }
       
    65 
       
    66 
       
    67 void check_Dfs_Function_Compile() 
       
    68 {
       
    69   typedef int VType;
       
    70   typedef concepts::Digraph Digraph;
       
    71 
       
    72   typedef Digraph::Arc Arc;
       
    73   typedef Digraph::Node Node;
       
    74   typedef Digraph::ArcIt ArcIt;
       
    75   typedef Digraph::NodeIt NodeIt;
       
    76   typedef concepts::ReadMap<Arc,VType> LengthMap;
       
    77    
       
    78   Digraph g;
       
    79   dfs(g,Node()).run();
       
    80   dfs(g).source(Node()).run();
       
    81   dfs(g)
       
    82     .predMap(concepts::WriteMap<Node,Arc>())
       
    83     .distMap(concepts::WriteMap<Node,VType>())
       
    84     .reachedMap(concepts::ReadWriteMap<Node,bool>())
       
    85     .processedMap(concepts::WriteMap<Node,bool>())
       
    86     .run(Node());
       
    87   
       
    88 }
       
    89 
       
    90 int main()
       
    91 {
       
    92     
       
    93   // typedef SmartDigraph Digraph;
       
    94   typedef ListDigraph Digraph;
       
    95 
       
    96   typedef Digraph::Arc Arc;
       
    97   typedef Digraph::Node Node;
       
    98   typedef Digraph::ArcIt ArcIt;
       
    99   typedef Digraph::NodeIt NodeIt;
       
   100   typedef Digraph::ArcMap<int> LengthMap;
       
   101 
       
   102   Digraph G;
       
   103   Node s, t;
       
   104   PetStruct<Digraph> ps = addPetersen(G,PET_SIZE);
       
   105    
       
   106   s=ps.outer[2];
       
   107   t=ps.inner[0];
       
   108   
       
   109   Dfs<Digraph> dfs_test(G);
       
   110   dfs_test.run(s);  
       
   111   
       
   112   Path<Digraph> p = dfs_test.path(t);
       
   113   check(p.length()==dfs_test.dist(t),"path() found a wrong path.");
       
   114   check(checkPath(G, p),"path() found a wrong path.");
       
   115   check(pathSource(G, p) == s,"path() found a wrong path.");
       
   116   check(pathTarget(G, p) == t,"path() found a wrong path.");
       
   117   
       
   118   for(NodeIt v(G); v!=INVALID; ++v) {
       
   119     check(dfs_test.reached(v),"Each node should be reached.");
       
   120     if ( dfs_test.predArc(v)!=INVALID ) {
       
   121       Arc e=dfs_test.predArc(v);
       
   122       Node u=G.source(e);
       
   123       check(u==dfs_test.predNode(v),"Wrong tree.");
       
   124       check(dfs_test.dist(v) - dfs_test.dist(u) == 1,
       
   125 	    "Wrong distance. (" << dfs_test.dist(u) << "->" 
       
   126 	    <<dfs_test.dist(v) << ')');
       
   127     }
       
   128   }
       
   129 }
       
   130