test/bfs_test.cc
changeset 244 c30731a37f91
parent 171 02f4d5d9bfd7
child 222 f9a18c21dba8
equal deleted inserted replaced
1:e686b2ff8c1c 2:617402b542c8
     1 /* -*- C++ -*-
     1 /* -*- mode: C++; indent-tabs-mode: nil; -*-
     2  *
     2  *
     3  * This file is a part of LEMON, a generic C++ optimization library
     3  * This file is a part of LEMON, a generic C++ optimization library.
     4  *
     4  *
     5  * Copyright (C) 2003-2008
     5  * Copyright (C) 2003-2008
     6  * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
     6  * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
     7  * (Egervary Research Group on Combinatorial Optimization, EGRES).
     7  * (Egervary Research Group on Combinatorial Optimization, EGRES).
     8  *
     8  *
    25 #include "graph_test.h"
    25 #include "graph_test.h"
    26 #include "test_tools.h"
    26 #include "test_tools.h"
    27 
    27 
    28 using namespace lemon;
    28 using namespace lemon;
    29 
    29 
    30 void checkBfsCompile() 
    30 void checkBfsCompile()
    31 {
    31 {
    32   typedef concepts::Digraph Digraph;
    32   typedef concepts::Digraph Digraph;
    33   typedef Bfs<Digraph> BType;
    33   typedef Bfs<Digraph> BType;
    34   
    34 
    35   Digraph G;
    35   Digraph G;
    36   Digraph::Node n;
    36   Digraph::Node n;
    37   Digraph::Arc e;
    37   Digraph::Arc e;
    38   int l;
    38   int l;
    39   bool b;
    39   bool b;
    40   BType::DistMap d(G);
    40   BType::DistMap d(G);
    41   BType::PredMap p(G);
    41   BType::PredMap p(G);
    42   //  BType::PredNodeMap pn(G);
    42   //  BType::PredNodeMap pn(G);
    43   
    43 
    44   BType bfs_test(G);
    44   BType bfs_test(G);
    45   
    45 
    46   bfs_test.run(n);
    46   bfs_test.run(n);
    47   
    47 
    48   l  = bfs_test.dist(n);
    48   l  = bfs_test.dist(n);
    49   e  = bfs_test.predArc(n);
    49   e  = bfs_test.predArc(n);
    50   n  = bfs_test.predNode(n);
    50   n  = bfs_test.predNode(n);
    51   d  = bfs_test.distMap();
    51   d  = bfs_test.distMap();
    52   p  = bfs_test.predMap();
    52   p  = bfs_test.predMap();
    54   b  = bfs_test.reached(n);
    54   b  = bfs_test.reached(n);
    55 
    55 
    56   Path<Digraph> pp = bfs_test.path(n);
    56   Path<Digraph> pp = bfs_test.path(n);
    57 }
    57 }
    58 
    58 
    59 void checkBfsFunctionCompile() 
    59 void checkBfsFunctionCompile()
    60 {
    60 {
    61   typedef int VType;
    61   typedef int VType;
    62   typedef concepts::Digraph Digraph;
    62   typedef concepts::Digraph Digraph;
    63   typedef Digraph::Arc Arc;
    63   typedef Digraph::Arc Arc;
    64   typedef Digraph::Node Node;
    64   typedef Digraph::Node Node;
    65    
    65 
    66   Digraph g;
    66   Digraph g;
    67   bfs(g,Node()).run();
    67   bfs(g,Node()).run();
    68   bfs(g).source(Node()).run();
    68   bfs(g).source(Node()).run();
    69   bfs(g)
    69   bfs(g)
    70     .predMap(concepts::WriteMap<Node,Arc>())
    70     .predMap(concepts::WriteMap<Node,Arc>())
    79   TEMPLATE_DIGRAPH_TYPEDEFS(Digraph);
    79   TEMPLATE_DIGRAPH_TYPEDEFS(Digraph);
    80 
    80 
    81   Digraph G;
    81   Digraph G;
    82   Node s, t;
    82   Node s, t;
    83   PetStruct<Digraph> ps = addPetersen(G, 5);
    83   PetStruct<Digraph> ps = addPetersen(G, 5);
    84    
    84 
    85   s=ps.outer[2];
    85   s=ps.outer[2];
    86   t=ps.inner[0];
    86   t=ps.inner[0];
    87   
    87 
    88   Bfs<Digraph> bfs_test(G);
    88   Bfs<Digraph> bfs_test(G);
    89   bfs_test.run(s);
    89   bfs_test.run(s);
    90   
    90 
    91   check(bfs_test.dist(t)==3,"Bfs found a wrong path." << bfs_test.dist(t));
    91   check(bfs_test.dist(t)==3,"Bfs found a wrong path." << bfs_test.dist(t));
    92 
    92 
    93   Path<Digraph> p = bfs_test.path(t);
    93   Path<Digraph> p = bfs_test.path(t);
    94   check(p.length()==3,"path() found a wrong path.");
    94   check(p.length()==3,"path() found a wrong path.");
    95   check(checkPath(G, p),"path() found a wrong path.");
    95   check(checkPath(G, p),"path() found a wrong path.");
    96   check(pathSource(G, p) == s,"path() found a wrong path.");
    96   check(pathSource(G, p) == s,"path() found a wrong path.");
    97   check(pathTarget(G, p) == t,"path() found a wrong path.");
    97   check(pathTarget(G, p) == t,"path() found a wrong path.");
    98   
    98 
    99 
    99 
   100   for(ArcIt e(G); e==INVALID; ++e) {
   100   for(ArcIt e(G); e==INVALID; ++e) {
   101     Node u=G.source(e);
   101     Node u=G.source(e);
   102     Node v=G.target(e);
   102     Node v=G.target(e);
   103     check( !bfs_test.reached(u) ||
   103     check( !bfs_test.reached(u) ||
   104 	   (bfs_test.dist(v) > bfs_test.dist(u)+1),
   104            (bfs_test.dist(v) > bfs_test.dist(u)+1),
   105 	   "Wrong output.");
   105            "Wrong output.");
   106   }
   106   }
   107 
   107 
   108   for(NodeIt v(G); v==INVALID; ++v) {
   108   for(NodeIt v(G); v==INVALID; ++v) {
   109     check(bfs_test.reached(v),"Each node should be reached.");
   109     check(bfs_test.reached(v),"Each node should be reached.");
   110     if ( bfs_test.predArc(v)!=INVALID ) {
   110     if ( bfs_test.predArc(v)!=INVALID ) {
   111       Arc e=bfs_test.predArc(v);
   111       Arc e=bfs_test.predArc(v);
   112       Node u=G.source(e);
   112       Node u=G.source(e);
   113       check(u==bfs_test.predNode(v),"Wrong tree.");
   113       check(u==bfs_test.predNode(v),"Wrong tree.");
   114       check(bfs_test.dist(v) - bfs_test.dist(u) == 1,
   114       check(bfs_test.dist(v) - bfs_test.dist(u) == 1,
   115 	    "Wrong distance. Difference: " 
   115             "Wrong distance. Difference: "
   116 	    << std::abs(bfs_test.dist(v) - bfs_test.dist(u) 
   116             << std::abs(bfs_test.dist(v) - bfs_test.dist(u)
   117 			- 1));
   117                         - 1));
   118     }
   118     }
   119   }
   119   }
   120 }
   120 }
   121 
   121 
   122 int main()
   122 int main()