test/graph_test.h
author Balazs Dezso <deba@inf.elte.hu>
Thu, 10 Jul 2008 15:02:35 +0200
changeset 201 9757e3d9bfeb
child 209 765619b7cbb2
permissions -rw-r--r--
More docs for undirected LGF IO
     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 #ifndef LEMON_TEST_GRAPH_TEST_H
    20 #define LEMON_TEST_GRAPH_TEST_H
    21 
    22 #include <lemon/graph_utils.h>
    23 #include "test_tools.h"
    24 
    25 namespace lemon {
    26 
    27   template<class Graph>
    28   void checkGraphNodeList(const Graph &G, int cnt)
    29   {
    30     typename Graph::NodeIt n(G);
    31     for(int i=0;i<cnt;i++) {
    32       check(n!=INVALID,"Wrong Node list linking.");
    33       ++n;
    34     }
    35     check(n==INVALID,"Wrong Node list linking.");
    36     check(countNodes(G)==cnt,"Wrong Node number.");
    37   }
    38 
    39   template<class Graph>
    40   void checkGraphArcList(const Graph &G, int cnt)
    41   {
    42     typename Graph::ArcIt e(G);
    43     for(int i=0;i<cnt;i++) {
    44       check(e!=INVALID,"Wrong Arc list linking.");
    45       ++e;
    46     }
    47     check(e==INVALID,"Wrong Arc list linking.");
    48     check(countArcs(G)==cnt,"Wrong Arc number.");
    49   }
    50 
    51   template<class Graph>
    52   void checkGraphOutArcList(const Graph &G, typename Graph::Node n, int cnt)
    53   {
    54     typename Graph::OutArcIt e(G,n);
    55     for(int i=0;i<cnt;i++) {
    56       check(e!=INVALID,"Wrong OutArc list linking.");
    57       check(n==G.source(e),"Wrong OutArc list linking.");
    58       ++e;
    59     }
    60     check(e==INVALID,"Wrong OutArc list linking.");
    61     check(countOutArcs(G,n)==cnt,"Wrong OutArc number.");
    62   }
    63 
    64   template<class Graph>
    65   void checkGraphInArcList(const Graph &G, typename Graph::Node n, int cnt)
    66   {
    67     typename Graph::InArcIt e(G,n);
    68     for(int i=0;i<cnt;i++) {
    69       check(e!=INVALID,"Wrong InArc list linking.");
    70       check(n==G.target(e),"Wrong InArc list linking.");
    71       ++e;
    72     }
    73     check(e==INVALID,"Wrong InArc list linking.");
    74     check(countInArcs(G,n)==cnt,"Wrong InArc number.");
    75   }
    76 
    77   template<class Graph>
    78   void checkGraphEdgeList(const Graph &G, int cnt)
    79   {
    80     typename Graph::EdgeIt e(G);
    81     for(int i=0;i<cnt;i++) {
    82       check(e!=INVALID,"Wrong Edge list linking.");
    83       ++e;
    84     }
    85     check(e==INVALID,"Wrong Edge list linking.");
    86     check(countEdges(G)==cnt,"Wrong Edge number.");
    87   }
    88 
    89   template<class Graph>
    90   void checkGraphIncEdgeList(const Graph &G, typename Graph::Node n, int cnt)
    91   {
    92     typename Graph::IncEdgeIt e(G,n);
    93     for(int i=0;i<cnt;i++) {
    94       check(e!=INVALID,"Wrong IncEdge list linking.");
    95       check(n==G.u(e) || n==G.v(e),"Wrong IncEdge list linking.");
    96       ++e;
    97     }
    98     check(e==INVALID,"Wrong IncEdge list linking.");
    99     check(countIncEdges(G,n)==cnt,"Wrong IncEdge number.");
   100   }
   101 
   102   template <class Digraph>
   103   void checkDigraphIterators() {
   104     typedef typename Digraph::Node Node;
   105     typedef typename Digraph::NodeIt NodeIt;
   106     typedef typename Digraph::Arc Arc;
   107     typedef typename Digraph::ArcIt ArcIt;
   108     typedef typename Digraph::InArcIt InArcIt;
   109     typedef typename Digraph::OutArcIt OutArcIt;
   110   }
   111 
   112   template <class Graph>
   113   void checkGraphIterators() {
   114     checkDigraphIterators<Graph>();
   115     typedef typename Graph::Edge Edge;
   116     typedef typename Graph::EdgeIt EdgeIt;
   117     typedef typename Graph::IncEdgeIt IncEdgeIt;
   118   }
   119 
   120   // Structure returned by addPetersen()
   121   template<class Digraph>
   122   struct PetStruct
   123   {
   124     // Vector containing the outer nodes
   125     std::vector<typename Digraph::Node> outer;
   126     // Vector containing the inner nodes
   127     std::vector<typename Digraph::Node> inner;
   128     // Vector containing the arcs of the inner circle
   129     std::vector<typename Digraph::Arc> incir;
   130     // Vector containing the arcs of the outer circle
   131     std::vector<typename Digraph::Arc> outcir;
   132     // Vector containing the chord arcs
   133     std::vector<typename Digraph::Arc> chords;
   134   };
   135 
   136   // Adds the reverse pair of all arcs to a digraph
   137   template<class Digraph>
   138   void bidirDigraph(Digraph &G)
   139   {
   140     typedef typename Digraph::Arc Arc;
   141     typedef typename Digraph::ArcIt ArcIt;
   142 
   143     std::vector<Arc> ee;
   144 
   145     for(ArcIt e(G);e!=INVALID;++e) ee.push_back(e);
   146 
   147     for(int i=0;i<int(ee.size());++i)
   148       G.addArc(G.target(ee[i]),G.source(ee[i]));
   149   }
   150 
   151   // Adds a Petersen digraph to G.
   152   // Returns the nodes and arcs of the generated digraph.
   153   template<typename Digraph>
   154   PetStruct<Digraph> addPetersen(Digraph &G,int num = 5)
   155   {
   156     PetStruct<Digraph> n;
   157 
   158     for(int i=0;i<num;i++) {
   159       n.outer.push_back(G.addNode());
   160       n.inner.push_back(G.addNode());
   161     }
   162 
   163     for(int i=0;i<num;i++) {
   164       n.chords.push_back(G.addArc(n.outer[i],n.inner[i]));
   165       n.outcir.push_back(G.addArc(n.outer[i],n.outer[(i+1) % num]));
   166       n.incir.push_back(G.addArc(n.inner[i],n.inner[(i+2) % num]));
   167     }
   168 
   169     return n;
   170   }
   171 
   172   // Checks the bidirectioned Petersen digraph
   173   template<class Digraph>
   174   void checkBidirPetersen(const Digraph &G, int num = 5)
   175   {
   176     typedef typename Digraph::NodeIt NodeIt;
   177 
   178     checkGraphNodeList(G, 2 * num);
   179     checkGraphArcList(G, 6 * num);
   180 
   181     for(NodeIt n(G);n!=INVALID;++n) {
   182       checkGraphInArcList(G, n, 3);
   183       checkGraphOutArcList(G, n, 3);
   184     }
   185   }
   186 
   187   // Structure returned by addUPetersen()
   188   template<class Graph>
   189   struct UPetStruct
   190   {
   191     // Vector containing the outer nodes
   192     std::vector<typename Graph::Node> outer;
   193     // Vector containing the inner nodes
   194     std::vector<typename Graph::Node> inner;
   195     // Vector containing the edges of the inner circle
   196     std::vector<typename Graph::Edge> incir;
   197     // Vector containing the edges of the outer circle
   198     std::vector<typename Graph::Edge> outcir;
   199     // Vector containing the chord edges
   200     std::vector<typename Graph::Edge> chords;
   201   };
   202 
   203   // Adds a Petersen graph to \c G.
   204   // Returns the nodes and edges of the generated graph.
   205   template<typename Graph>
   206   UPetStruct<Graph> addUPetersen(Graph &G,int num=5)
   207   {
   208     UPetStruct<Graph> n;
   209 
   210     for(int i=0;i<num;i++) {
   211       n.outer.push_back(G.addNode());
   212       n.inner.push_back(G.addNode());
   213     }
   214 
   215     for(int i=0;i<num;i++) {
   216       n.chords.push_back(G.addEdge(n.outer[i],n.inner[i]));
   217       n.outcir.push_back(G.addEdge(n.outer[i],n.outer[(i+1)%num]));
   218       n.incir.push_back(G.addEdge(n.inner[i],n.inner[(i+2)%num]));
   219     }
   220     
   221     return n;
   222   }
   223 
   224   // Checks the undirected Petersen graph
   225   template<class Graph>
   226   void checkUndirPetersen(const Graph &G, int num = 5)
   227   {
   228     typedef typename Graph::NodeIt NodeIt;
   229 
   230     checkGraphNodeList(G, 2 * num);
   231     checkGraphEdgeList(G, 3 * num);
   232     checkGraphArcList(G, 6 * num);
   233 
   234     for(NodeIt n(G);n!=INVALID;++n) {
   235       checkGraphIncEdgeList(G, n, 3);
   236     }
   237   }
   238 
   239   template <class Digraph>
   240   void checkDigraph() {
   241     const int num = 5;
   242     Digraph G;
   243     checkGraphNodeList(G, 0);
   244     checkGraphArcList(G, 0);
   245     addPetersen(G, num);
   246     bidirDigraph(G);
   247     checkBidirPetersen(G, num);
   248   }
   249   
   250   template <class Graph>
   251   void checkGraph() {
   252     const int num = 5;
   253     Graph G;
   254     checkGraphNodeList(G, 0);
   255     checkGraphEdgeList(G, 0);
   256     addUPetersen(G, num);
   257     checkUndirPetersen(G, num);
   258   }
   259 
   260 } //namespace lemon
   261 
   262 #endif