test/bfs_test.cc
author Peter Kovacs <kpeter@inf.elte.hu>
Mon, 14 Jul 2008 09:15:23 +0200
changeset 212 1ae84dea7d09
parent 171 02f4d5d9bfd7
child 222 f9a18c21dba8
permissions -rw-r--r--
Fix the incorrect tab replacements of unify-sources.sh
alpar@209
     1
/* -*- mode: C++; indent-tabs-mode: nil; -*-
alpar@100
     2
 *
alpar@209
     3
 * This file is a part of LEMON, a generic C++ optimization library.
alpar@100
     4
 *
alpar@100
     5
 * Copyright (C) 2003-2008
alpar@100
     6
 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
alpar@100
     7
 * (Egervary Research Group on Combinatorial Optimization, EGRES).
alpar@100
     8
 *
alpar@100
     9
 * Permission to use, modify and distribute this software is granted
alpar@100
    10
 * provided that this copyright notice appears in all copies. For
alpar@100
    11
 * precise terms see the accompanying LICENSE file.
alpar@100
    12
 *
alpar@100
    13
 * This software is provided "AS IS" with no warranty of any kind,
alpar@100
    14
 * express or implied, and with no claim as to its suitability for any
alpar@100
    15
 * purpose.
alpar@100
    16
 *
alpar@100
    17
 */
alpar@100
    18
kpeter@171
    19
#include <lemon/concepts/digraph.h>
kpeter@171
    20
#include <lemon/smart_graph.h>
alpar@100
    21
#include <lemon/list_graph.h>
alpar@100
    22
#include <lemon/bfs.h>
alpar@100
    23
#include <lemon/path.h>
kpeter@171
    24
kpeter@171
    25
#include "graph_test.h"
kpeter@171
    26
#include "test_tools.h"
alpar@100
    27
alpar@100
    28
using namespace lemon;
alpar@100
    29
alpar@209
    30
void checkBfsCompile()
alpar@100
    31
{
alpar@100
    32
  typedef concepts::Digraph Digraph;
alpar@100
    33
  typedef Bfs<Digraph> BType;
alpar@209
    34
alpar@100
    35
  Digraph G;
kpeter@171
    36
  Digraph::Node n;
kpeter@171
    37
  Digraph::Arc e;
alpar@100
    38
  int l;
alpar@100
    39
  bool b;
alpar@100
    40
  BType::DistMap d(G);
alpar@100
    41
  BType::PredMap p(G);
alpar@100
    42
  //  BType::PredNodeMap pn(G);
alpar@209
    43
alpar@100
    44
  BType bfs_test(G);
alpar@209
    45
alpar@100
    46
  bfs_test.run(n);
alpar@209
    47
alpar@100
    48
  l  = bfs_test.dist(n);
alpar@100
    49
  e  = bfs_test.predArc(n);
alpar@100
    50
  n  = bfs_test.predNode(n);
alpar@100
    51
  d  = bfs_test.distMap();
alpar@100
    52
  p  = bfs_test.predMap();
alpar@100
    53
  //  pn = bfs_test.predNodeMap();
alpar@100
    54
  b  = bfs_test.reached(n);
alpar@100
    55
alpar@100
    56
  Path<Digraph> pp = bfs_test.path(n);
alpar@100
    57
}
alpar@100
    58
alpar@209
    59
void checkBfsFunctionCompile()
alpar@100
    60
{
alpar@100
    61
  typedef int VType;
alpar@100
    62
  typedef concepts::Digraph Digraph;
alpar@100
    63
  typedef Digraph::Arc Arc;
alpar@100
    64
  typedef Digraph::Node Node;
alpar@209
    65
alpar@100
    66
  Digraph g;
alpar@100
    67
  bfs(g,Node()).run();
alpar@100
    68
  bfs(g).source(Node()).run();
alpar@100
    69
  bfs(g)
alpar@100
    70
    .predMap(concepts::WriteMap<Node,Arc>())
alpar@100
    71
    .distMap(concepts::WriteMap<Node,VType>())
alpar@100
    72
    .reachedMap(concepts::ReadWriteMap<Node,bool>())
alpar@100
    73
    .processedMap(concepts::WriteMap<Node,bool>())
alpar@100
    74
    .run(Node());
alpar@100
    75
}
alpar@100
    76
kpeter@171
    77
template <class Digraph>
kpeter@171
    78
void checkBfs() {
kpeter@171
    79
  TEMPLATE_DIGRAPH_TYPEDEFS(Digraph);
alpar@100
    80
alpar@100
    81
  Digraph G;
alpar@100
    82
  Node s, t;
kpeter@171
    83
  PetStruct<Digraph> ps = addPetersen(G, 5);
alpar@209
    84
alpar@100
    85
  s=ps.outer[2];
alpar@100
    86
  t=ps.inner[0];
alpar@209
    87
alpar@100
    88
  Bfs<Digraph> bfs_test(G);
alpar@100
    89
  bfs_test.run(s);
alpar@209
    90
kpeter@171
    91
  check(bfs_test.dist(t)==3,"Bfs found a wrong path." << bfs_test.dist(t));
alpar@100
    92
alpar@100
    93
  Path<Digraph> p = bfs_test.path(t);
kpeter@171
    94
  check(p.length()==3,"path() found a wrong path.");
alpar@100
    95
  check(checkPath(G, p),"path() found a wrong path.");
alpar@100
    96
  check(pathSource(G, p) == s,"path() found a wrong path.");
alpar@100
    97
  check(pathTarget(G, p) == t,"path() found a wrong path.");
alpar@209
    98
alpar@100
    99
alpar@100
   100
  for(ArcIt e(G); e==INVALID; ++e) {
alpar@100
   101
    Node u=G.source(e);
alpar@100
   102
    Node v=G.target(e);
alpar@100
   103
    check( !bfs_test.reached(u) ||
alpar@209
   104
           (bfs_test.dist(v) > bfs_test.dist(u)+1),
alpar@209
   105
           "Wrong output.");
alpar@100
   106
  }
alpar@100
   107
alpar@100
   108
  for(NodeIt v(G); v==INVALID; ++v) {
alpar@100
   109
    check(bfs_test.reached(v),"Each node should be reached.");
alpar@100
   110
    if ( bfs_test.predArc(v)!=INVALID ) {
alpar@100
   111
      Arc e=bfs_test.predArc(v);
alpar@100
   112
      Node u=G.source(e);
alpar@100
   113
      check(u==bfs_test.predNode(v),"Wrong tree.");
alpar@100
   114
      check(bfs_test.dist(v) - bfs_test.dist(u) == 1,
alpar@209
   115
            "Wrong distance. Difference: "
alpar@209
   116
            << std::abs(bfs_test.dist(v) - bfs_test.dist(u)
alpar@209
   117
                        - 1));
alpar@100
   118
    }
alpar@100
   119
  }
alpar@100
   120
}
alpar@100
   121
kpeter@171
   122
int main()
kpeter@171
   123
{
kpeter@171
   124
  checkBfs<ListDigraph>();
kpeter@171
   125
  checkBfs<SmartDigraph>();
kpeter@171
   126
  return 0;
kpeter@171
   127
}