COIN-OR::LEMON - Graph Library

source: lemon-1.2/test/bfs_test.cc @ 170:91fb4372688f

Last change on this file since 170:91fb4372688f was 100:4f754b4cf82b, checked in by Alpar Juttner <alpar@…>, 12 years ago

Bfs/Dfs/Dijkstra? and their deps ported from svn trung -r 3441.

File size: 3.3 KB
RevLine 
[100]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/bfs.h>
23#include <lemon/path.h>
24#include<lemon/concepts/digraph.h>
25
26using namespace lemon;
27
28const int PET_SIZE =5;
29
30
31void check_Bfs_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 Bfs<Digraph> BType;
41 
42  Digraph G;
43  Node n;
44  Arc e;
45  int l;
46  bool b;
47  BType::DistMap d(G);
48  BType::PredMap p(G);
49  //  BType::PredNodeMap pn(G);
50 
51  BType bfs_test(G);
52 
53  bfs_test.run(n);
54 
55  l  = bfs_test.dist(n);
56  e  = bfs_test.predArc(n);
57  n  = bfs_test.predNode(n);
58  d  = bfs_test.distMap();
59  p  = bfs_test.predMap();
60  //  pn = bfs_test.predNodeMap();
61  b  = bfs_test.reached(n);
62
63  Path<Digraph> pp = bfs_test.path(n);
64}
65
66void check_Bfs_Function_Compile()
67{
68  typedef int VType;
69  typedef concepts::Digraph Digraph;
70
71  typedef Digraph::Arc Arc;
72  typedef Digraph::Node Node;
73  typedef Digraph::ArcIt ArcIt;
74  typedef Digraph::NodeIt NodeIt;
75  typedef concepts::ReadMap<Arc,VType> LengthMap;
76   
77  Digraph g;
78  bfs(g,Node()).run();
79  bfs(g).source(Node()).run();
80  bfs(g)
81    .predMap(concepts::WriteMap<Node,Arc>())
82    .distMap(concepts::WriteMap<Node,VType>())
83    .reachedMap(concepts::ReadWriteMap<Node,bool>())
84    .processedMap(concepts::WriteMap<Node,bool>())
85    .run(Node());
86 
87}
88
89int main()
90{
91   
92  // typedef SmartDigraph Digraph;
93  typedef ListDigraph Digraph;
94
95  typedef Digraph::Arc Arc;
96  typedef Digraph::Node Node;
97  typedef Digraph::ArcIt ArcIt;
98  typedef Digraph::NodeIt NodeIt;
99  typedef Digraph::ArcMap<int> LengthMap;
100
101  Digraph G;
102  Node s, t;
103  PetStruct<Digraph> ps = addPetersen(G,PET_SIZE);
104   
105  s=ps.outer[2];
106  t=ps.inner[0];
107 
108  Bfs<Digraph> bfs_test(G);
109  bfs_test.run(s);
110 
111  check(bfs_test.dist(t)==3,"Bfs found a wrong path. " << bfs_test.dist(t));
112
113  Path<Digraph> p = bfs_test.path(t);
114  check(p.length()==3,"getPath() found a wrong path.");
115  check(checkPath(G, p),"path() found a wrong path.");
116  check(pathSource(G, p) == s,"path() found a wrong path.");
117  check(pathTarget(G, p) == t,"path() found a wrong path.");
118 
119
120  for(ArcIt e(G); e==INVALID; ++e) {
121    Node u=G.source(e);
122    Node v=G.target(e);
123    check( !bfs_test.reached(u) ||
124           (bfs_test.dist(v) > bfs_test.dist(u)+1),
125           "Wrong output.");
126  }
127
128  for(NodeIt v(G); v==INVALID; ++v) {
129    check(bfs_test.reached(v),"Each node should be reached.");
130    if ( bfs_test.predArc(v)!=INVALID ) {
131      Arc e=bfs_test.predArc(v);
132      Node u=G.source(e);
133      check(u==bfs_test.predNode(v),"Wrong tree.");
134      check(bfs_test.dist(v) - bfs_test.dist(u) == 1,
135            "Wrong distance. Difference: "
136            << std::abs(bfs_test.dist(v) - bfs_test.dist(u)
137                        - 1));
138    }
139  }
140}
141
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