test/graph_utils_test.h
author Alpar Juttner <alpar@cs.elte.hu>
Sat, 17 May 2008 06:30:02 +0100
changeset 156 e561aa7675de
permissions -rw-r--r--
More flexible header names in .lgf + largely improved doc
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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_UTILS_TEST_H
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#define LEMON_TEST_GRAPH_UTILS_TEST_H
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#include "test_tools.h"
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#include <cstdlib>
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#include <ctime>
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//! \ingroup misc
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//! \file
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//! \brief Test cases for graph utils.
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namespace lemon {
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  template <typename Digraph>
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  void checkDigraphCounters() {
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    const int num = 5;
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    Digraph digraph;
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    addPetersen(digraph, num);
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    bidirDigraph(digraph);
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    check(countNodes(digraph) == 2*num, "Wrong node number.");
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    check(countArcs(digraph) == 6*num, "Wrong arc number.");    
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    for (typename Digraph::NodeIt it(digraph); it != INVALID; ++it) {
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      check(countOutArcs(digraph, it) == 3, "Wrong out degree number.");
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      check(countInArcs(digraph, it) == 3, "Wrong in degree number.");
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    }
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  }
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  template <typename Digraph>
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  void checkFindArc() {
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    typedef typename Digraph::Node Node;
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    typedef typename Digraph::Arc Arc;
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    typedef typename Digraph::NodeIt NodeIt;
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    typedef typename Digraph::ArcIt ArcIt;
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    Digraph digraph;
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    for (int i = 0; i < 10; ++i) {
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      digraph.addNode();
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    }
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    DescriptorMap<Digraph, Node> nodes(digraph);
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    typename DescriptorMap<Digraph, Node>::InverseMap invNodes(nodes);
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    for (int i = 0; i < 100; ++i) {
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      int src = rnd[invNodes.size()];
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      int trg = rnd[invNodes.size()];
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      digraph.addArc(invNodes[src], invNodes[trg]);
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    }
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    typename Digraph::template ArcMap<bool> found(digraph, false);
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    DescriptorMap<Digraph, Arc> arcs(digraph);
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    for (NodeIt src(digraph); src != INVALID; ++src) {
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      for (NodeIt trg(digraph); trg != INVALID; ++trg) {
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	for (ConArcIt<Digraph> con(digraph, src, trg); con != INVALID; ++con) {
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	  check(digraph.source(con) == src, "Wrong source.");
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	  check(digraph.target(con) == trg, "Wrong target.");
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	  check(found[con] == false, "The arc found already.");
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	  found[con] = true;
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	}
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      }
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    }
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    for (ArcIt it(digraph); it != INVALID; ++it) {
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      check(found[it] == true, "The arc is not found.");
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    }
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  }
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} //namespace lemon
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#endif