COIN-OR::LEMON - Graph Library

source: lemon-0.x/test/bfs_test.cc @ 2260:4274224f8a7d

Last change on this file since 2260:4274224f8a7d was 2260:4274224f8a7d, checked in by Alpar Juttner, 13 years ago

concept -> concepts (namespace & directory)

File size: 3.1 KB
Line 
1/* -*- C++ -*-
2 *
3 * This file is a part of LEMON, a generic C++ optimization library
4 *
5 * Copyright (C) 2003-2006
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/bfs.h>
22#include <lemon/path.h>
23#include<lemon/concepts/graph.h>
24
25using namespace lemon;
26
27const int PET_SIZE =5;
28
29
30void check_Bfs_Compile()
31{
32  typedef concepts::Graph Graph;
33
34  typedef Graph::Edge Edge;
35  typedef Graph::Node Node;
36  typedef Graph::EdgeIt EdgeIt;
37  typedef Graph::NodeIt NodeIt;
38 
39  typedef Bfs<Graph> BType;
40 
41  Graph G;
42  Node n;
43  Edge e;
44  int l;
45  bool b;
46  BType::DistMap d(G);
47  BType::PredMap p(G);
48  //  BType::PredNodeMap pn(G);
49 
50  BType bfs_test(G);
51 
52  bfs_test.run(n);
53 
54  l  = bfs_test.dist(n);
55  e  = bfs_test.predEdge(n);
56  n  = bfs_test.predNode(n);
57  d  = bfs_test.distMap();
58  p  = bfs_test.predMap();
59  //  pn = bfs_test.predNodeMap();
60  b  = bfs_test.reached(n);
61
62  Path<Graph> pp(G);
63  bfs_test.getPath(pp,n);
64}
65
66void check_Bfs_Function_Compile()
67{
68  typedef int VType;
69  typedef concepts::Graph Graph;
70
71  typedef Graph::Edge Edge;
72  typedef Graph::Node Node;
73  typedef Graph::EdgeIt EdgeIt;
74  typedef Graph::NodeIt NodeIt;
75  typedef concepts::ReadMap<Edge,VType> LengthMap;
76   
77  Graph g;
78  bfs(g,Node()).run();
79  bfs(g).source(Node()).run();
80  bfs(g)
81    .predMap(concepts::WriteMap<Node,Edge>())
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 SmartGraph Graph;
93
94  typedef Graph::Edge Edge;
95  typedef Graph::Node Node;
96  typedef Graph::EdgeIt EdgeIt;
97  typedef Graph::NodeIt NodeIt;
98  typedef Graph::EdgeMap<int> LengthMap;
99
100  Graph G;
101  Node s, t;
102  PetStruct<Graph> ps = addPetersen(G,PET_SIZE);
103   
104  s=ps.outer[2];
105  t=ps.inner[0];
106 
107  Bfs<Graph> bfs_test(G);
108  bfs_test.run(s);
109 
110  check(bfs_test.dist(t)==3,"Bfs found a wrong path. " << bfs_test.dist(t));
111
112  Path<Graph> p(G);
113  check(bfs_test.getPath(p,t),"getPath() failed to set the path.");
114  check(p.length()==3,"getPath() found a wrong path.");
115 
116
117  for(EdgeIt e(G); e==INVALID; ++e) {
118    Node u=G.source(e);
119    Node v=G.target(e);
120    check( !bfs_test.reached(u) ||
121           (bfs_test.dist(v) > bfs_test.dist(u)+1),
122           "Wrong output.");
123  }
124
125  for(NodeIt v(G); v==INVALID; ++v) {
126    check(bfs_test.reached(v),"Each node should be reached.");
127    if ( bfs_test.predEdge(v)!=INVALID ) {
128      Edge e=bfs_test.predEdge(v);
129      Node u=G.source(e);
130      check(u==bfs_test.predNode(v),"Wrong tree.");
131      check(bfs_test.dist(v) - bfs_test.dist(u) == 1,
132            "Wrong distance. Difference: "
133            << std::abs(bfs_test.dist(v) - bfs_test.dist(u)
134                        - 1));
135    }
136  }
137}
138
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