/* -*- mode: C++; indent-tabs-mode: nil; -*-

 *

 * This file is a part of LEMON, a generic C++ optimization library.

 *

 * Copyright (C) 2003-2009

 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport

 * (Egervary Research Group on Combinatorial Optimization, 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 <set>

#include <lemon/core.h>

#include <lemon/maps.h>

#include "test_tools.h"

namespace lemon {

  template<class Graph>

  void checkGraphNodeList(const Graph &G, int cnt)

  {

    typename Graph::NodeIt n(G);

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

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

      ++n;

    }

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

    check(countNodes(G)==cnt,"Wrong Node number.");

  }

  template<class Graph>

  void checkGraphArcList(const Graph &G, int cnt)

  {

    typename Graph::ArcIt e(G);

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

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

      check(G.oppositeNode(G.source(e), e) == G.target(e),

            "Wrong opposite node");

      check(G.oppositeNode(G.target(e), e) == G.source(e),

            "Wrong opposite node");

      ++e;

    }

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

    check(countArcs(G)==cnt,"Wrong Arc number.");

  }

  template<class Graph>

  void checkGraphOutArcList(const Graph &G, typename Graph::Node n, int cnt)

  {

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

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

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

      check(n==G.source(e),"Wrong OutArc list linking.");

      check(n==G.baseNode(e),"Wrong OutArc list linking.");

      check(G.target(e)==G.runningNode(e),"Wrong OutArc list linking.");

      ++e;

    }

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

    check(countOutArcs(G,n)==cnt,"Wrong OutArc number.");

  }

  template<class Graph>

  void checkGraphInArcList(const Graph &G, typename Graph::Node n, int cnt)

  {

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

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

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

      check(n==G.target(e),"Wrong InArc list linking.");

      check(n==G.baseNode(e),"Wrong OutArc list linking.");

      check(G.source(e)==G.runningNode(e),"Wrong OutArc list linking.");

      ++e;

    }

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

    check(countInArcs(G,n)==cnt,"Wrong InArc number.");

  }

  template<class Graph>

  void checkGraphEdgeList(const Graph &G, int cnt)

  {

    typename Graph::EdgeIt e(G);

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

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

      check(G.oppositeNode(G.u(e), e) == G.v(e), "Wrong opposite node");

      check(G.oppositeNode(G.v(e), e) == G.u(e), "Wrong opposite node");

      ++e;

    }

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

    check(countEdges(G)==cnt,"Wrong Edge number.");

  }

  template<class Graph>

  void checkGraphIncEdgeList(const Graph &G, typename Graph::Node n, int cnt)

  {

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

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

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

      check(n==G.u(e) || n==G.v(e),"Wrong IncEdge list linking.");

      check(n==G.baseNode(e),"Wrong OutArc list linking.");

      check(G.u(e)==G.runningNode(e) || G.v(e)==G.runningNode(e),

            "Wrong OutArc list linking.");

      ++e;

    }

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

    check(countIncEdges(G,n)==cnt,"Wrong IncEdge number.");

  }

  template <class Graph>

  void checkGraphIncEdgeArcLists(const Graph &G, typename Graph::Node n,

                                 int cnt)

  {

    checkGraphIncEdgeList(G, n, cnt);

    checkGraphOutArcList(G, n, cnt);

    checkGraphInArcList(G, n, cnt);

  }

  template <class Graph>

  void checkGraphConArcList(const Graph &G, int cnt) {

    int i = 0;

    for (typename Graph::NodeIt u(G); u != INVALID; ++u) {

      for (typename Graph::NodeIt v(G); v != INVALID; ++v) {

        for (ConArcIt<Graph> a(G, u, v); a != INVALID; ++a) {

          check(G.source(a) == u, "Wrong iterator.");

          check(G.target(a) == v, "Wrong iterator.");

          ++i;

        }

      }

    }

    check(cnt == i, "Wrong iterator.");

  }

  template <class Graph>

  void checkGraphConEdgeList(const Graph &G, int cnt) {

    int i = 0;

    for (typename Graph::NodeIt u(G); u != INVALID; ++u) {

      for (typename Graph::NodeIt v(G); v != INVALID; ++v) {

        for (ConEdgeIt<Graph> e(G, u, v); e != INVALID; ++e) {

          check((G.u(e) == u && G.v(e) == v) ||

                (G.u(e) == v && G.v(e) == u), "Wrong iterator.");

          i += u == v ? 2 : 1;

        }

      }

    }

    check(2 * cnt == i, "Wrong iterator.");

  }

  template <typename Graph>

  void checkArcDirections(const Graph& G) {

    for (typename Graph::ArcIt a(G); a != INVALID; ++a) {

      check(G.source(a) == G.target(G.oppositeArc(a)), "Wrong direction");

      check(G.target(a) == G.source(G.oppositeArc(a)), "Wrong direction");

      check(G.direct(a, G.direction(a)) == a, "Wrong direction");

    }

  }

  template <typename Graph>

  void checkNodeIds(const Graph& G) {

    std::set<int> values;

    for (typename Graph::NodeIt n(G); n != INVALID; ++n) {

      check(G.nodeFromId(G.id(n)) == n, "Wrong id");

      check(values.find(G.id(n)) == values.end(), "Wrong id");

      check(G.id(n) <= G.maxNodeId(), "Wrong maximum id");

      values.insert(G.id(n));

    }

  }

  template <typename Graph>

  void checkArcIds(const Graph& G) {

    std::set<int> values;

    for (typename Graph::ArcIt a(G); a != INVALID; ++a) {

      check(G.arcFromId(G.id(a)) == a, "Wrong id");

      check(values.find(G.id(a)) == values.end(), "Wrong id");

      check(G.id(a) <= G.maxArcId(), "Wrong maximum id");

      values.insert(G.id(a));

    }

  }

  template <typename Graph>

  void checkEdgeIds(const Graph& G) {

    std::set<int> values;

    for (typename Graph::EdgeIt e(G); e != INVALID; ++e) {

      check(G.edgeFromId(G.id(e)) == e, "Wrong id");

      check(values.find(G.id(e)) == values.end(), "Wrong id");

      check(G.id(e) <= G.maxEdgeId(), "Wrong maximum id");

      values.insert(G.id(e));

    }

  }

  template <typename Graph>

  void checkGraphNodeMap(const Graph& G) {

    typedef typename Graph::Node Node;

    typedef typename Graph::NodeIt NodeIt;

    typedef typename Graph::template NodeMap<int> IntNodeMap;

    IntNodeMap map(G, 42);

    for (NodeIt it(G); it != INVALID; ++it) {

      check(map[it] == 42, "Wrong map constructor.");

    }

    int s = 0;

    for (NodeIt it(G); it != INVALID; ++it) {

      map[it] = 0;

      check(map[it] == 0, "Wrong operator[].");

      map.set(it, s);

      check(map[it] == s, "Wrong set.");

      ++s;

    }

    s = s * (s - 1) / 2;

    for (NodeIt it(G); it != INVALID; ++it) {

      s -= map[it];

    }

    check(s == 0, "Wrong sum.");

    // map = constMap<Node>(12);

    // for (NodeIt it(G); it != INVALID; ++it) {

    //   check(map[it] == 12, "Wrong operator[].");

    // }

  }

  template <typename Graph>

  void checkGraphArcMap(const Graph& G) {

    typedef typename Graph::Arc Arc;

    typedef typename Graph::ArcIt ArcIt;

    typedef typename Graph::template ArcMap<int> IntArcMap;

    IntArcMap map(G, 42);

    for (ArcIt it(G); it != INVALID; ++it) {

      check(map[it] == 42, "Wrong map constructor.");

    }

    int s = 0;

    for (ArcIt it(G); it != INVALID; ++it) {

      map[it] = 0;

      check(map[it] == 0, "Wrong operator[].");

      map.set(it, s);

      check(map[it] == s, "Wrong set.");

      ++s;

    }

    s = s * (s - 1) / 2;

    for (ArcIt it(G); it != INVALID; ++it) {

      s -= map[it];

    }

    check(s == 0, "Wrong sum.");

    // map = constMap<Arc>(12);

    // for (ArcIt it(G); it != INVALID; ++it) {

    //   check(map[it] == 12, "Wrong operator[].");

    // }

  }

  template <typename Graph>

  void checkGraphEdgeMap(const Graph& G) {

    typedef typename Graph::Edge Edge;

    typedef typename Graph::EdgeIt EdgeIt;

    typedef typename Graph::template EdgeMap<int> IntEdgeMap;

    IntEdgeMap map(G, 42);

    for (EdgeIt it(G); it != INVALID; ++it) {

      check(map[it] == 42, "Wrong map constructor.");

    }

    int s = 0;

    for (EdgeIt it(G); it != INVALID; ++it) {

      map[it] = 0;

      check(map[it] == 0, "Wrong operator[].");

      map.set(it, s);

      check(map[it] == s, "Wrong set.");

      ++s;

    }

    s = s * (s - 1) / 2;

    for (EdgeIt it(G); it != INVALID; ++it) {

      s -= map[it];

    }

    check(s == 0, "Wrong sum.");

    // map = constMap<Edge>(12);

    // for (EdgeIt it(G); it != INVALID; ++it) {

    //   check(map[it] == 12, "Wrong operator[].");

    // }

  }

} //namespace lemon

#endif