1 | /* -*- C++ -*- |
---|
2 | * src/test/bfs_test.cc - Part of LEMON, a generic C++ optimization library |
---|
3 | * |
---|
4 | * Copyright (C) 2004 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
---|
5 | * (Egervary Combinatorial Optimization Research Group, EGRES). |
---|
6 | * |
---|
7 | * Permission to use, modify and distribute this software is granted |
---|
8 | * provided that this copyright notice appears in all copies. For |
---|
9 | * precise terms see the accompanying LICENSE file. |
---|
10 | * |
---|
11 | * This software is provided "AS IS" with no warranty of any kind, |
---|
12 | * express or implied, and with no claim as to its suitability for any |
---|
13 | * purpose. |
---|
14 | * |
---|
15 | */ |
---|
16 | |
---|
17 | #include "test_tools.h" |
---|
18 | #include <lemon/smart_graph.h> |
---|
19 | #include <lemon/bfs.h> |
---|
20 | #include<lemon/concept/graph.h> |
---|
21 | |
---|
22 | using namespace lemon; |
---|
23 | |
---|
24 | const int PET_SIZE =5; |
---|
25 | |
---|
26 | |
---|
27 | void check_Bfs_Compile() |
---|
28 | { |
---|
29 | typedef concept::StaticGraph Graph; |
---|
30 | |
---|
31 | typedef Graph::Edge Edge; |
---|
32 | typedef Graph::Node Node; |
---|
33 | typedef Graph::EdgeIt EdgeIt; |
---|
34 | typedef Graph::NodeIt NodeIt; |
---|
35 | |
---|
36 | typedef Bfs<Graph> BType; |
---|
37 | |
---|
38 | Graph G; |
---|
39 | Node n; |
---|
40 | Edge e; |
---|
41 | int l; |
---|
42 | bool b; |
---|
43 | BType::DistMap d(G); |
---|
44 | BType::PredMap p(G); |
---|
45 | BType::PredNodeMap pn(G); |
---|
46 | |
---|
47 | BType bfs_test(G); |
---|
48 | |
---|
49 | bfs_test.run(n); |
---|
50 | |
---|
51 | l = bfs_test.dist(n); |
---|
52 | e = bfs_test.pred(n); |
---|
53 | n = bfs_test.predNode(n); |
---|
54 | d = bfs_test.distMap(); |
---|
55 | p = bfs_test.predMap(); |
---|
56 | pn = bfs_test.predNodeMap(); |
---|
57 | b = bfs_test.reached(n); |
---|
58 | |
---|
59 | } |
---|
60 | |
---|
61 | int main() |
---|
62 | { |
---|
63 | |
---|
64 | typedef SmartGraph Graph; |
---|
65 | |
---|
66 | typedef Graph::Edge Edge; |
---|
67 | typedef Graph::Node Node; |
---|
68 | typedef Graph::EdgeIt EdgeIt; |
---|
69 | typedef Graph::NodeIt NodeIt; |
---|
70 | typedef Graph::EdgeMap<int> LengthMap; |
---|
71 | |
---|
72 | Graph G; |
---|
73 | Node s, t; |
---|
74 | PetStruct<Graph> ps = addPetersen(G,PET_SIZE); |
---|
75 | |
---|
76 | s=ps.outer[2]; |
---|
77 | t=ps.inner[0]; |
---|
78 | |
---|
79 | Bfs<Graph> bfs_test(G); |
---|
80 | bfs_test.run(s); |
---|
81 | |
---|
82 | check(bfs_test.dist(t)==3,"Bfs found a wrong path. " << bfs_test.dist(t)); |
---|
83 | |
---|
84 | |
---|
85 | for(EdgeIt e(G); e==INVALID; ++e) { |
---|
86 | Node u=G.source(e); |
---|
87 | Node v=G.target(e); |
---|
88 | check( !bfs_test.reached(u) || |
---|
89 | (bfs_test.dist(v) > bfs_test.dist(u)+1), |
---|
90 | "Wrong output."); |
---|
91 | } |
---|
92 | |
---|
93 | for(NodeIt v(G); v==INVALID; ++v) { |
---|
94 | check(bfs_test.reached(v),"Each node should be reached."); |
---|
95 | if ( bfs_test.pred(v)!=INVALID ) { |
---|
96 | Edge e=bfs_test.pred(v); |
---|
97 | Node u=G.source(e); |
---|
98 | check(u==bfs_test.predNode(v),"Wrong tree."); |
---|
99 | check(bfs_test.dist(v) - bfs_test.dist(u) == 1, |
---|
100 | "Wrong distance. Difference: " |
---|
101 | << std::abs(bfs_test.dist(v) - bfs_test.dist(u) |
---|
102 | - 1)); |
---|
103 | } |
---|
104 | } |
---|
105 | } |
---|
106 | |
---|