/* -*- C++ -*-

 * src/test/graph_test.h - Part of LEMON, a generic C++ optimization library

 *

 * Copyright (C) 2004 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport

 * (Egervary Combinatorial Optimization Research Group, EGRES).

 *

 * Permission to use, modify and distribute this software is granted

 * provided that this copyright notice appears in all copies. For

 * precise terms see the accompanying LICENSE file.

 *

 * This software is provided "AS IS" with no warranty of any kind,

 * express or implied, and with no claim as to its suitability for any

 * purpose.

 *

 */

#ifndef LEMON_TEST_GRAPH_TEST_H

#define LEMON_TEST_GRAPH_TEST_H

#include "test_tools.h"

//! \ingroup misc

//! \file

//! \brief Some utility and test cases to test graph classes.

namespace lemon {

  template<class Graph> void checkGraphNodeList(Graph &G, int nn)

  {

    typename Graph::NodeIt n(G);

    for(int i=0;i<nn;i++) {

      check(n!=INVALID,"Wrong Node list linking.");

      ++n;

    }

    check(n==INVALID,"Wrong Node list linking.");

  }

  template<class Graph>

  void checkGraphEdgeList(Graph &G, int nn)

  {

    typedef typename Graph::EdgeIt EdgeIt;

    EdgeIt e(G);

    for(int i=0;i<nn;i++) {

      check(e!=INVALID,"Wrong Edge list linking.");

      ++e;

    }

    check(e==INVALID,"Wrong Edge list linking.");

  }

  template<class Graph> 

  void checkGraphOutEdgeList(Graph &G, typename Graph::Node n, int nn)

  {

    typename Graph::OutEdgeIt e(G,n);

    for(int i=0;i<nn;i++) {

      check(e!=INVALID,"Wrong OutEdge list linking.");

      check(n==G.tail(e), "Wrong OutEdge list linking.");

      ++e;

    }

    check(e==INVALID,"Wrong OutEdge list linking.");

  }

  template<class Graph> void 

  checkGraphInEdgeList(Graph &G, typename Graph::Node n, int nn)

  {

    typename Graph::InEdgeIt e(G,n);

    for(int i=0;i<nn;i++) {

      check(e!=INVALID,"Wrong InEdge list linking.");

      check(n==G.head(e), "Wrong InEdge list linking.");

      ++e;

    }

    check(e==INVALID,"Wrong InEdge list linking.");

  }

  template <class Graph> 

  void checkGraph() {

    const int num = 5;

    Graph G;

    addPetersen(G, num);

    bidirGraph(G);

    checkBidirPetersen(G, num);

  }

  ///\file

  ///\todo Check head(), tail() as well;

} //namespace lemon

#endif