test/dfs_test.cc
author Peter Kovacs <kpeter@inf.elte.hu>
Sat, 05 Jul 2008 17:22:28 +0200
changeset 191 abc5b9d0c67e
parent 100 4f754b4cf82b
child 209 765619b7cbb2
permissions -rw-r--r--
lgf_demo.cc is merged with reader_writer_demo.cc (from SVN -r3501)
     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 <lemon/concepts/digraph.h>
    20 #include <lemon/smart_graph.h>
    21 #include <lemon/list_graph.h>
    22 #include <lemon/dfs.h>
    23 #include <lemon/path.h>
    24 
    25 #include "graph_test.h"
    26 #include "test_tools.h"
    27 
    28 using namespace lemon;
    29 
    30 void checkDfsCompile() 
    31 {
    32   typedef concepts::Digraph Digraph;
    33   typedef Dfs<Digraph> DType;
    34   
    35   Digraph G;
    36   Digraph::Node n;
    37   Digraph::Arc e;
    38   int l;
    39   bool b;
    40   DType::DistMap d(G);
    41   DType::PredMap p(G);
    42   //  DType::PredNodeMap pn(G);
    43   
    44   DType dfs_test(G);
    45   
    46   dfs_test.run(n);
    47   
    48   l  = dfs_test.dist(n);
    49   e  = dfs_test.predArc(n);
    50   n  = dfs_test.predNode(n);
    51   d  = dfs_test.distMap();
    52   p  = dfs_test.predMap();
    53   //  pn = dfs_test.predNodeMap();
    54   b  = dfs_test.reached(n);
    55 
    56   Path<Digraph> pp = dfs_test.path(n);
    57 }
    58 
    59 void checkDfsFunctionCompile() 
    60 {
    61   typedef int VType;
    62   typedef concepts::Digraph Digraph;
    63   typedef Digraph::Arc Arc;
    64   typedef Digraph::Node Node;
    65    
    66   Digraph g;
    67   dfs(g,Node()).run();
    68   dfs(g).source(Node()).run();
    69   dfs(g)
    70     .predMap(concepts::WriteMap<Node,Arc>())
    71     .distMap(concepts::WriteMap<Node,VType>())
    72     .reachedMap(concepts::ReadWriteMap<Node,bool>())
    73     .processedMap(concepts::WriteMap<Node,bool>())
    74     .run(Node()); 
    75 }
    76 
    77 template <class Digraph>
    78 void checkDfs() {
    79   TEMPLATE_DIGRAPH_TYPEDEFS(Digraph);
    80 
    81   Digraph G;
    82   Node s, t;
    83   PetStruct<Digraph> ps = addPetersen(G, 5);
    84    
    85   s=ps.outer[2];
    86   t=ps.inner[0];
    87   
    88   Dfs<Digraph> dfs_test(G);
    89   dfs_test.run(s);  
    90   
    91   Path<Digraph> p = dfs_test.path(t);
    92   check(p.length() == dfs_test.dist(t),"path() found a wrong path.");
    93   check(checkPath(G, p),"path() found a wrong path.");
    94   check(pathSource(G, p) == s,"path() found a wrong path.");
    95   check(pathTarget(G, p) == t,"path() found a wrong path.");
    96   
    97   for(NodeIt v(G); v!=INVALID; ++v) {
    98     check(dfs_test.reached(v),"Each node should be reached.");
    99     if ( dfs_test.predArc(v)!=INVALID ) {
   100       Arc e=dfs_test.predArc(v);
   101       Node u=G.source(e);
   102       check(u==dfs_test.predNode(v),"Wrong tree.");
   103       check(dfs_test.dist(v) - dfs_test.dist(u) == 1,
   104 	    "Wrong distance. (" << dfs_test.dist(u) << "->" 
   105 	    <<dfs_test.dist(v) << ')');
   106     }
   107   }
   108 }
   109 
   110 int main()
   111 {
   112   checkDfs<ListDigraph>();
   113   checkDfs<SmartDigraph>();
   114   return 0;
   115 }