test/digraph_test.h
author Alpar Juttner <alpar@cs.elte.hu>
Thu, 03 Apr 2008 11:10:49 +0100
changeset 128 7cd965d2257f
parent 57 c1acf0018c0a
permissions -rw-r--r--
Port graph_to_eps() and Color from svn -r3482.
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/* -*- C++ -*-
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 *
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 * This file is a part of LEMON, a generic C++ optimization library
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 *
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 * Copyright (C) 2003-2008
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 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
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 * (Egervary Research Group on Combinatorial Optimization, EGRES).
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 *
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 * Permission to use, modify and distribute this software is granted
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 * provided that this copyright notice appears in all copies. For
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 * precise terms see the accompanying LICENSE file.
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 *
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 * This software is provided "AS IS" with no warranty of any kind,
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 * express or implied, and with no claim as to its suitability for any
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 * purpose.
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 *
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 */
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#ifndef LEMON_TEST_GRAPH_TEST_H
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#define LEMON_TEST_GRAPH_TEST_H
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//#include <lemon/graph_utils.h>
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#include "test_tools.h"
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//! \ingroup misc
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//! \file
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//! \brief Some utility and test cases to test digraph classes.
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namespace lemon {
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  ///Structure returned by \ref addPetersen().
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  ///Structure returned by \ref addPetersen().
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  ///
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  template<class Digraph> 
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  struct PetStruct
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  {
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    ///Vector containing the outer nodes.
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    std::vector<typename Digraph::Node> outer;
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    ///Vector containing the inner nodes.
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    std::vector<typename Digraph::Node> inner;
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    ///Vector containing the edges of the inner circle.
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    std::vector<typename Digraph::Arc> incir;
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    ///Vector containing the edges of the outer circle.
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    std::vector<typename Digraph::Arc> outcir;
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    ///Vector containing the chord edges.
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    std::vector<typename Digraph::Arc> chords;
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  };
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  ///Adds a Petersen graph to \c G.
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  ///Adds a Petersen graph to \c G.
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  ///\return The nodes and edges of the generated graph.
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  template<typename Digraph>
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  PetStruct<Digraph> addPetersen(Digraph &G,int num = 5)
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  {
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    PetStruct<Digraph> n;
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    for(int i=0;i<num;i++) {
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      n.outer.push_back(G.addNode());
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      n.inner.push_back(G.addNode());
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    }
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    for(int i=0;i<num;i++) {
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      n.chords.push_back(G.addArc(n.outer[i],n.inner[i]));
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      n.outcir.push_back(G.addArc(n.outer[i],n.outer[(i+1) % num]));
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      n.incir.push_back(G.addArc(n.inner[i],n.inner[(i+2) % num]));
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    }
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    return n;
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  }
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  /// \brief Adds to the digraph the reverse pair of all edges.
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  ///
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  /// Adds to the digraph the reverse pair of all edges.
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  ///
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  template<class Digraph> 
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  void bidirDigraph(Digraph &G)
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  {
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    typedef typename Digraph::Arc Arc;
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    typedef typename Digraph::ArcIt ArcIt;
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    std::vector<Arc> ee;
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    for(ArcIt e(G);e!=INVALID;++e) ee.push_back(e);
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    for(typename std::vector<Arc>::iterator p=ee.begin();p!=ee.end();p++)
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      G.addArc(G.target(*p),G.source(*p));
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  }
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  /// \brief Checks the bidirectioned Petersen graph.
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  ///
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  ///  Checks the bidirectioned Petersen graph.
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  ///
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  template<class Digraph> 
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  void checkBidirPetersen(Digraph &G, int num = 5)
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  {
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    typedef typename Digraph::Node Node;
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    typedef typename Digraph::ArcIt ArcIt;
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    typedef typename Digraph::NodeIt NodeIt;
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    checkDigraphNodeList(G, 2 * num);
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    checkDigraphArcList(G, 6 * num);
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    for(NodeIt n(G);n!=INVALID;++n) {
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      checkDigraphInArcList(G, n, 3);
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      checkDigraphOutArcList(G, n, 3);
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    }  
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  }
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  template<class Digraph> void checkDigraphNodeList(Digraph &G, int nn)
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  {
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    typename Digraph::NodeIt n(G);
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    for(int i=0;i<nn;i++) {
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      check(n!=INVALID,"Wrong Node list linking.");
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      ++n;
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    }
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    check(n==INVALID,"Wrong Node list linking.");
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  }
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  template<class Digraph>
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  void checkDigraphArcList(Digraph &G, int nn)
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  {
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    typedef typename Digraph::ArcIt ArcIt;
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    ArcIt e(G);
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    for(int i=0;i<nn;i++) {
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      check(e!=INVALID,"Wrong Arc list linking.");
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      ++e;
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    }
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    check(e==INVALID,"Wrong Arc list linking.");
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  }
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  template<class Digraph> 
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  void checkDigraphOutArcList(Digraph &G, typename Digraph::Node n, int nn)
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  {
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    typename Digraph::OutArcIt e(G,n);
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    for(int i=0;i<nn;i++) {
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      check(e!=INVALID,"Wrong OutArc list linking.");
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      check(n==G.source(e), "Wrong OutArc list linking.");
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      ++e;
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    }
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    check(e==INVALID,"Wrong OutArc list linking.");
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  }
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  template<class Digraph> void 
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  checkDigraphInArcList(Digraph &G, typename Digraph::Node n, int nn)
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  {
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    typename Digraph::InArcIt e(G,n);
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    for(int i=0;i<nn;i++) {
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      check(e!=INVALID,"Wrong InArc list linking.");
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      check(n==G.target(e), "Wrong InArc list linking.");
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      ++e;
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    }
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    check(e==INVALID,"Wrong InArc list linking.");
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  }
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  template <class Digraph> 
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  void checkDigraph() {
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    const int num = 5;
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    Digraph G;
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    addPetersen(G, num);
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    bidirDigraph(G);
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    checkBidirPetersen(G, num);
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  }
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  template <class Digraph> 
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  void checkDigraphIterators(const Digraph& digraph) {
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    typedef typename Digraph::Node Node;
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    typedef typename Digraph::NodeIt NodeIt;
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    typedef typename Digraph::Arc Arc;
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    typedef typename Digraph::ArcIt ArcIt;
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    typedef typename Digraph::InArcIt InArcIt;
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    typedef typename Digraph::OutArcIt OutArcIt;
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    //    typedef ConArcIt<Digraph> ConArcIt;
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  }
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  ///\file
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  ///\todo Check target(), source() as well;
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} //namespace lemon
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#endif