test/graph_test.h
author Alpar Juttner <alpar@cs.elte.hu>
Wed, 09 Jul 2008 07:57:53 +0200
changeset 198 e80e08222fdf
child 209 765619b7cbb2
permissions -rw-r--r--
Merge
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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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namespace lemon {
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  template<class Graph>
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  void checkGraphNodeList(const Graph &G, int cnt)
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  {
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    typename Graph::NodeIt n(G);
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    for(int i=0;i<cnt;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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    check(countNodes(G)==cnt,"Wrong Node number.");
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  }
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  template<class Graph>
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  void checkGraphArcList(const Graph &G, int cnt)
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  {
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    typename Graph::ArcIt e(G);
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    for(int i=0;i<cnt;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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    check(countArcs(G)==cnt,"Wrong Arc number.");
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  }
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  template<class Graph>
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  void checkGraphOutArcList(const Graph &G, typename Graph::Node n, int cnt)
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  {
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    typename Graph::OutArcIt e(G,n);
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    for(int i=0;i<cnt;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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    check(countOutArcs(G,n)==cnt,"Wrong OutArc number.");
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  }
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  template<class Graph>
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  void checkGraphInArcList(const Graph &G, typename Graph::Node n, int cnt)
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  {
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    typename Graph::InArcIt e(G,n);
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    for(int i=0;i<cnt;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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    check(countInArcs(G,n)==cnt,"Wrong InArc number.");
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  }
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  template<class Graph>
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  void checkGraphEdgeList(const Graph &G, int cnt)
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  {
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    typename Graph::EdgeIt e(G);
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    for(int i=0;i<cnt;i++) {
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      check(e!=INVALID,"Wrong Edge list linking.");
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      ++e;
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    }
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    check(e==INVALID,"Wrong Edge list linking.");
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    check(countEdges(G)==cnt,"Wrong Edge number.");
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  }
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  template<class Graph>
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  void checkGraphIncEdgeList(const Graph &G, typename Graph::Node n, int cnt)
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  {
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    typename Graph::IncEdgeIt e(G,n);
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    for(int i=0;i<cnt;i++) {
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      check(e!=INVALID,"Wrong IncEdge list linking.");
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      check(n==G.u(e) || n==G.v(e),"Wrong IncEdge list linking.");
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      ++e;
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    }
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    check(e==INVALID,"Wrong IncEdge list linking.");
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    check(countIncEdges(G,n)==cnt,"Wrong IncEdge number.");
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  }
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  template <class Digraph>
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  void checkDigraphIterators() {
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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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  }
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  template <class Graph>
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  void checkGraphIterators() {
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    checkDigraphIterators<Graph>();
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    typedef typename Graph::Edge Edge;
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    typedef typename Graph::EdgeIt EdgeIt;
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    typedef typename Graph::IncEdgeIt IncEdgeIt;
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  }
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  // Structure returned by addPetersen()
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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 arcs of the inner circle
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    std::vector<typename Digraph::Arc> incir;
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    // Vector containing the arcs of the outer circle
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    std::vector<typename Digraph::Arc> outcir;
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    // Vector containing the chord arcs
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    std::vector<typename Digraph::Arc> chords;
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  };
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  // Adds the reverse pair of all arcs to a digraph
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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(int i=0;i<int(ee.size());++i)
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      G.addArc(G.target(ee[i]),G.source(ee[i]));
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  }
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  // Adds a Petersen digraph to G.
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  // Returns the nodes and arcs of the generated digraph.
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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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  // Checks the bidirectioned Petersen digraph
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  template<class Digraph>
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  void checkBidirPetersen(const Digraph &G, int num = 5)
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  {
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    typedef typename Digraph::NodeIt NodeIt;
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    checkGraphNodeList(G, 2 * num);
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    checkGraphArcList(G, 6 * num);
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    for(NodeIt n(G);n!=INVALID;++n) {
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      checkGraphInArcList(G, n, 3);
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      checkGraphOutArcList(G, n, 3);
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    }
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  }
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  // Structure returned by addUPetersen()
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  template<class Graph>
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  struct UPetStruct
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  {
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    // Vector containing the outer nodes
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    std::vector<typename Graph::Node> outer;
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    // Vector containing the inner nodes
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    std::vector<typename Graph::Node> inner;
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    // Vector containing the edges of the inner circle
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    std::vector<typename Graph::Edge> incir;
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    // Vector containing the edges of the outer circle
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    std::vector<typename Graph::Edge> outcir;
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    // Vector containing the chord edges
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    std::vector<typename Graph::Edge> chords;
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  };
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  // Adds a Petersen graph to \c G.
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  // Returns the nodes and edges of the generated graph.
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  template<typename Graph>
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  UPetStruct<Graph> addUPetersen(Graph &G,int num=5)
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  {
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    UPetStruct<Graph> 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.addEdge(n.outer[i],n.inner[i]));
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      n.outcir.push_back(G.addEdge(n.outer[i],n.outer[(i+1)%num]));
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      n.incir.push_back(G.addEdge(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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  // Checks the undirected Petersen graph
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  template<class Graph>
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  void checkUndirPetersen(const Graph &G, int num = 5)
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  {
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    typedef typename Graph::NodeIt NodeIt;
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    checkGraphNodeList(G, 2 * num);
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    checkGraphEdgeList(G, 3 * num);
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    checkGraphArcList(G, 6 * num);
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    for(NodeIt n(G);n!=INVALID;++n) {
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      checkGraphIncEdgeList(G, n, 3);
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    }
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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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    checkGraphNodeList(G, 0);
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    checkGraphArcList(G, 0);
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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 Graph>
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  void checkGraph() {
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    const int num = 5;
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    Graph G;
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    checkGraphNodeList(G, 0);
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    checkGraphEdgeList(G, 0);
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    addUPetersen(G, num);
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    checkUndirPetersen(G, num);
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  }
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} //namespace lemon
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#endif