LEMON/LEMON-main Files · test/edge_set_test.cc

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Location: LEMON/LEMON-main/test/edge_set_test.cc

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kpeter (Peter Kovacs)
Use XTI implementation instead of ATI in NetworkSimplex (#234)

XTI (eXtended Threaded Index) is an imporved version of the widely
known ATI (Augmented Threaded Index) method for storing and updating
the spanning tree structure in Network Simplex algorithms.

In the ATI data structure three indices are stored for each node:
predecessor, thread and depth. In the XTI data structure depth is
replaced by the number of successors and the last successor
(according to the thread index).

              /* -*- mode: C++; indent-tabs-mode: nil; -*-
 *
 * This file is a part of LEMON, a generic C++ optimization library.
 *
 * Copyright (C) 2003-2008
 * 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.
 *
 */

#include <iostream>
#include <vector>

#include <lemon/concepts/digraph.h>
#include <lemon/concepts/graph.h>
#include <lemon/concept_check.h>

#include <lemon/list_graph.h>

#include <lemon/edge_set.h>

#include "graph_test.h"
#include "test_tools.h"

using namespace lemon;

void checkSmartArcSet() {
  checkConcept<concepts::Digraph, SmartArcSet<ListDigraph> >();

  typedef ListDigraph Digraph;
  typedef SmartArcSet<Digraph> ArcSet;

  Digraph digraph;
  Digraph::Node
    n1 = digraph.addNode(),
    n2 = digraph.addNode();

  Digraph::Arc ga1 = digraph.addArc(n1, n2);

  ArcSet arc_set(digraph);

  Digraph::Arc ga2 = digraph.addArc(n2, n1);

  checkGraphNodeList(arc_set, 2);
  checkGraphArcList(arc_set, 0);

  Digraph::Node
    n3 = digraph.addNode();
  checkGraphNodeList(arc_set, 3);
  checkGraphArcList(arc_set, 0);

  ArcSet::Arc a1 = arc_set.addArc(n1, n2);
  check(arc_set.source(a1) == n1 && arc_set.target(a1) == n2, "Wrong arc");
  checkGraphNodeList(arc_set, 3);
  checkGraphArcList(arc_set, 1);

  checkGraphOutArcList(arc_set, n1, 1);
  checkGraphOutArcList(arc_set, n2, 0);
  checkGraphOutArcList(arc_set, n3, 0);

  checkGraphInArcList(arc_set, n1, 0);
  checkGraphInArcList(arc_set, n2, 1);
  checkGraphInArcList(arc_set, n3, 0);

  checkGraphConArcList(arc_set, 1);

  ArcSet::Arc a2 = arc_set.addArc(n2, n1),
    a3 = arc_set.addArc(n2, n3),
    a4 = arc_set.addArc(n2, n3);
  checkGraphNodeList(arc_set, 3);
  checkGraphArcList(arc_set, 4);

  checkGraphOutArcList(arc_set, n1, 1);
  checkGraphOutArcList(arc_set, n2, 3);
  checkGraphOutArcList(arc_set, n3, 0);

  checkGraphInArcList(arc_set, n1, 1);
  checkGraphInArcList(arc_set, n2, 1);
  checkGraphInArcList(arc_set, n3, 2);

  checkGraphConArcList(arc_set, 4);

  checkNodeIds(arc_set);
  checkArcIds(arc_set);
  checkGraphNodeMap(arc_set);
  checkGraphArcMap(arc_set);

  check(arc_set.valid(), "Wrong validity");
  digraph.erase(n1);
  check(!arc_set.valid(), "Wrong validity");
}

void checkListArcSet() {
  checkConcept<concepts::Digraph, SmartArcSet<ListDigraph> >();

  typedef ListDigraph Digraph;
  typedef ListArcSet<Digraph> ArcSet;

  Digraph digraph;
  Digraph::Node
    n1 = digraph.addNode(),
    n2 = digraph.addNode();

  Digraph::Arc ga1 = digraph.addArc(n1, n2);

  ArcSet arc_set(digraph);

  Digraph::Arc ga2 = digraph.addArc(n2, n1);

  checkGraphNodeList(arc_set, 2);
  checkGraphArcList(arc_set, 0);

  Digraph::Node
    n3 = digraph.addNode();
  checkGraphNodeList(arc_set, 3);
  checkGraphArcList(arc_set, 0);

  ArcSet::Arc a1 = arc_set.addArc(n1, n2);
  check(arc_set.source(a1) == n1 && arc_set.target(a1) == n2, "Wrong arc");
  checkGraphNodeList(arc_set, 3);
  checkGraphArcList(arc_set, 1);

  checkGraphOutArcList(arc_set, n1, 1);
  checkGraphOutArcList(arc_set, n2, 0);
  checkGraphOutArcList(arc_set, n3, 0);

  checkGraphInArcList(arc_set, n1, 0);
  checkGraphInArcList(arc_set, n2, 1);
  checkGraphInArcList(arc_set, n3, 0);

  checkGraphConArcList(arc_set, 1);

  ArcSet::Arc a2 = arc_set.addArc(n2, n1),
    a3 = arc_set.addArc(n2, n3),
    a4 = arc_set.addArc(n2, n3);
  checkGraphNodeList(arc_set, 3);
  checkGraphArcList(arc_set, 4);

  checkGraphOutArcList(arc_set, n1, 1);
  checkGraphOutArcList(arc_set, n2, 3);
  checkGraphOutArcList(arc_set, n3, 0);

  checkGraphInArcList(arc_set, n1, 1);
  checkGraphInArcList(arc_set, n2, 1);
  checkGraphInArcList(arc_set, n3, 2);

  checkGraphConArcList(arc_set, 4);

  checkNodeIds(arc_set);
  checkArcIds(arc_set);
  checkGraphNodeMap(arc_set);
  checkGraphArcMap(arc_set);

  digraph.erase(n1);

  checkGraphNodeList(arc_set, 2);
  checkGraphArcList(arc_set, 2);

  checkGraphOutArcList(arc_set, n2, 2);
  checkGraphOutArcList(arc_set, n3, 0);

  checkGraphInArcList(arc_set, n2, 0);
  checkGraphInArcList(arc_set, n3, 2);

  checkNodeIds(arc_set);
  checkArcIds(arc_set);
  checkGraphNodeMap(arc_set);
  checkGraphArcMap(arc_set);

  checkGraphConArcList(arc_set, 2);
}

void checkSmartEdgeSet() {
  checkConcept<concepts::Digraph, SmartEdgeSet<ListDigraph> >();

  typedef ListDigraph Digraph;
  typedef SmartEdgeSet<Digraph> EdgeSet;

  Digraph digraph;
  Digraph::Node
    n1 = digraph.addNode(),
    n2 = digraph.addNode();

  Digraph::Arc ga1 = digraph.addArc(n1, n2);

  EdgeSet edge_set(digraph);

  Digraph::Arc ga2 = digraph.addArc(n2, n1);

  checkGraphNodeList(edge_set, 2);
  checkGraphArcList(edge_set, 0);
  checkGraphEdgeList(edge_set, 0);

  Digraph::Node
    n3 = digraph.addNode();
  checkGraphNodeList(edge_set, 3);
  checkGraphArcList(edge_set, 0);
  checkGraphEdgeList(edge_set, 0);

  EdgeSet::Edge e1 = edge_set.addEdge(n1, n2);
  check((edge_set.u(e1) == n1 && edge_set.v(e1) == n2) ||
        (edge_set.v(e1) == n1 && edge_set.u(e1) == n2), "Wrong edge");
  checkGraphNodeList(edge_set, 3);
  checkGraphArcList(edge_set, 2);
  checkGraphEdgeList(edge_set, 1);

  checkGraphOutArcList(edge_set, n1, 1);
  checkGraphOutArcList(edge_set, n2, 1);
  checkGraphOutArcList(edge_set, n3, 0);

  checkGraphInArcList(edge_set, n1, 1);
  checkGraphInArcList(edge_set, n2, 1);
  checkGraphInArcList(edge_set, n3, 0);

  checkGraphIncEdgeList(edge_set, n1, 1);
  checkGraphIncEdgeList(edge_set, n2, 1);
  checkGraphIncEdgeList(edge_set, n3, 0);

  checkGraphConEdgeList(edge_set, 1);
  checkGraphConArcList(edge_set, 2);

  EdgeSet::Edge e2 = edge_set.addEdge(n2, n1),
    e3 = edge_set.addEdge(n2, n3),
    e4 = edge_set.addEdge(n2, n3);
  checkGraphNodeList(edge_set, 3);
  checkGraphEdgeList(edge_set, 4);

  checkGraphOutArcList(edge_set, n1, 2);
  checkGraphOutArcList(edge_set, n2, 4);
  checkGraphOutArcList(edge_set, n3, 2);

  checkGraphInArcList(edge_set, n1, 2);
  checkGraphInArcList(edge_set, n2, 4);
  checkGraphInArcList(edge_set, n3, 2);

  checkGraphIncEdgeList(edge_set, n1, 2);
  checkGraphIncEdgeList(edge_set, n2, 4);
  checkGraphIncEdgeList(edge_set, n3, 2);

  checkGraphConEdgeList(edge_set, 4);
  checkGraphConArcList(edge_set, 8);

  checkArcDirections(edge_set);

  checkNodeIds(edge_set);
  checkArcIds(edge_set);
  checkEdgeIds(edge_set);
  checkGraphNodeMap(edge_set);
  checkGraphArcMap(edge_set);
  checkGraphEdgeMap(edge_set);

  check(edge_set.valid(), "Wrong validity");
  digraph.erase(n1);
  check(!edge_set.valid(), "Wrong validity");
}

void checkListEdgeSet() {
  checkConcept<concepts::Digraph, ListEdgeSet<ListDigraph> >();

  typedef ListDigraph Digraph;
  typedef ListEdgeSet<Digraph> EdgeSet;

  Digraph digraph;
  Digraph::Node
    n1 = digraph.addNode(),
    n2 = digraph.addNode();

  Digraph::Arc ga1 = digraph.addArc(n1, n2);

  EdgeSet edge_set(digraph);

  Digraph::Arc ga2 = digraph.addArc(n2, n1);

  checkGraphNodeList(edge_set, 2);
  checkGraphArcList(edge_set, 0);
  checkGraphEdgeList(edge_set, 0);

  Digraph::Node
    n3 = digraph.addNode();
  checkGraphNodeList(edge_set, 3);
  checkGraphArcList(edge_set, 0);
  checkGraphEdgeList(edge_set, 0);

  EdgeSet::Edge e1 = edge_set.addEdge(n1, n2);
  check((edge_set.u(e1) == n1 && edge_set.v(e1) == n2) ||
        (edge_set.v(e1) == n1 && edge_set.u(e1) == n2), "Wrong edge");
  checkGraphNodeList(edge_set, 3);
  checkGraphArcList(edge_set, 2);
  checkGraphEdgeList(edge_set, 1);

  checkGraphOutArcList(edge_set, n1, 1);
  checkGraphOutArcList(edge_set, n2, 1);
  checkGraphOutArcList(edge_set, n3, 0);

  checkGraphInArcList(edge_set, n1, 1);
  checkGraphInArcList(edge_set, n2, 1);
  checkGraphInArcList(edge_set, n3, 0);

  checkGraphIncEdgeList(edge_set, n1, 1);
  checkGraphIncEdgeList(edge_set, n2, 1);
  checkGraphIncEdgeList(edge_set, n3, 0);

  checkGraphConEdgeList(edge_set, 1);
  checkGraphConArcList(edge_set, 2);

  EdgeSet::Edge e2 = edge_set.addEdge(n2, n1),
    e3 = edge_set.addEdge(n2, n3),
    e4 = edge_set.addEdge(n2, n3);
  checkGraphNodeList(edge_set, 3);
  checkGraphEdgeList(edge_set, 4);

  checkGraphOutArcList(edge_set, n1, 2);
  checkGraphOutArcList(edge_set, n2, 4);
  checkGraphOutArcList(edge_set, n3, 2);

  checkGraphInArcList(edge_set, n1, 2);
  checkGraphInArcList(edge_set, n2, 4);
  checkGraphInArcList(edge_set, n3, 2);

  checkGraphIncEdgeList(edge_set, n1, 2);
  checkGraphIncEdgeList(edge_set, n2, 4);
  checkGraphIncEdgeList(edge_set, n3, 2);

  checkGraphConEdgeList(edge_set, 4);
  checkGraphConArcList(edge_set, 8);

  checkArcDirections(edge_set);

  checkNodeIds(edge_set);
  checkArcIds(edge_set);
  checkEdgeIds(edge_set);
  checkGraphNodeMap(edge_set);
  checkGraphArcMap(edge_set);
  checkGraphEdgeMap(edge_set);

  digraph.erase(n1);

  checkGraphNodeList(edge_set, 2);
  checkGraphArcList(edge_set, 4);
  checkGraphEdgeList(edge_set, 2);

  checkGraphOutArcList(edge_set, n2, 2);
  checkGraphOutArcList(edge_set, n3, 2);

  checkGraphInArcList(edge_set, n2, 2);
  checkGraphInArcList(edge_set, n3, 2);

  checkGraphIncEdgeList(edge_set, n2, 2);
  checkGraphIncEdgeList(edge_set, n3, 2);

  checkNodeIds(edge_set);
  checkArcIds(edge_set);
  checkEdgeIds(edge_set);
  checkGraphNodeMap(edge_set);
  checkGraphArcMap(edge_set);
  checkGraphEdgeMap(edge_set);

  checkGraphConEdgeList(edge_set, 2);
  checkGraphConArcList(edge_set, 4);

}


int main() {

  checkSmartArcSet();
  checkListArcSet();
  checkSmartEdgeSet();
  checkListEdgeSet();

  return 0;
}

    
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Location: LEMON/LEMON-main/test/edge_set_test.cc
