alpar@100: /* -*- C++ -*-
alpar@100:  *
alpar@100:  * This file is a part of LEMON, a generic C++ optimization library
alpar@100:  *
alpar@100:  * Copyright (C) 2003-2008
alpar@100:  * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
alpar@100:  * (Egervary Research Group on Combinatorial Optimization, EGRES).
alpar@100:  *
alpar@100:  * Permission to use, modify and distribute this software is granted
alpar@100:  * provided that this copyright notice appears in all copies. For
alpar@100:  * precise terms see the accompanying LICENSE file.
alpar@100:  *
alpar@100:  * This software is provided "AS IS" with no warranty of any kind,
alpar@100:  * express or implied, and with no claim as to its suitability for any
alpar@100:  * purpose.
alpar@100:  *
alpar@100:  */
alpar@100: 
alpar@100: #include <iostream>
alpar@100: #include <fstream>
alpar@100: #include <string>
alpar@100: #include <vector>
alpar@100: 
alpar@100: #include <lemon/concept_check.h>
alpar@100: #include <lemon/concepts/heap.h>
alpar@100: 
deba@203: #include <lemon/smart_graph.h>
alpar@100: 
deba@203: #include <lemon/lgf_reader.h>
deba@203: #include <lemon/dijkstra.h>
deba@203: #include <lemon/maps.h>
alpar@100: 
alpar@100: #include <lemon/bin_heap.h>
alpar@100: 
alpar@100: #include "test_tools.h"
alpar@100: 
alpar@100: using namespace lemon;
alpar@100: using namespace lemon::concepts;
alpar@100: 
deba@203: typedef ListDigraph Digraph;
deba@203: DIGRAPH_TYPEDEFS(Digraph);
deba@203: 
deba@203: char test_lgf[] = 
deba@203:   "@nodes\n" 
deba@203:   "label\n"	
deba@203:   "0\n"	
deba@203:   "1\n"	
deba@203:   "2\n"	
deba@203:   "3\n"	
deba@203:   "4\n"	
deba@203:   "5\n"	
deba@203:   "6\n"	
deba@203:   "7\n"	
deba@203:   "8\n"	
deba@203:   "9\n"	
deba@203:   "@arcs\n" 
deba@203:   "		label	capacity\n"	
deba@203:   "0	5	0	94\n"	
deba@203:   "3	9	1	11\n"	
deba@203:   "8	7	2	83\n"	
deba@203:   "1	2	3	94\n"	
deba@203:   "5	7	4	35\n"	
deba@203:   "7	4	5	84\n"	
deba@203:   "9	5	6	38\n"	
deba@203:   "0	4	7	96\n"	
deba@203:   "6	7	8	6\n"	
deba@203:   "3	1	9	27\n"	
deba@203:   "5	2	10	77\n"	
deba@203:   "5	6	11	69\n"	
deba@203:   "6	5	12	41\n"	
deba@203:   "4	6	13	70\n"	
deba@203:   "3	2	14	45\n"	
deba@203:   "7	9	15	93\n"	
deba@203:   "5	9	16	50\n"	
deba@203:   "9	0	17	94\n"	
deba@203:   "9	6	18	67\n"	
deba@203:   "0	9	19	86\n"	
deba@203:   "@attributes\n" 
deba@203:   "source 3\n";
deba@203: 
deba@203: int test_seq[] = { 2, 28, 19, 27, 33, 25, 13, 41, 10, 26,  1,  9,  4, 34};
deba@203: int test_inc[] = {20, 28, 34, 16,  0, 46, 44,  0, 42, 32, 14,  8,  6, 37};
deba@203: 
deba@203: int test_len = sizeof(test_seq) / sizeof(test_seq[0]);
deba@203: 
deba@203: template <typename Heap>
deba@203: void heapSortTest() {
deba@203:   RangeMap<int> map(test_len, -1);
deba@203: 
deba@203:   Heap heap(map);
deba@203:   
deba@203:   std::vector<int> v(test_len);
deba@203: 
deba@203:   for (int i = 0; i < test_len; ++i) {
deba@203:     v[i] = test_seq[i];
deba@203:     heap.push(i, v[i]);
deba@203:   }
deba@203:   std::sort(v.begin(), v.end());
deba@203:   for (int i = 0; i < test_len; ++i) {
deba@203:     check(v[i] == heap.prio() ,"Wrong order in heap sort.");
deba@203:     heap.pop();
deba@203:   }
deba@203: }
deba@203: 
deba@203: template <typename Heap>
deba@203: void heapIncreaseTest() {
deba@203:   RangeMap<int> map(test_len, -1);
deba@203: 
deba@203:   Heap heap(map);
deba@203:   
deba@203:   std::vector<int> v(test_len);
deba@203: 
deba@203:   for (int i = 0; i < test_len; ++i) {
deba@203:     v[i] = test_seq[i];
deba@203:     heap.push(i, v[i]);
deba@203:   }
deba@203:   for (int i = 0; i < test_len; ++i) {
deba@203:     v[i] += test_inc[i];
deba@203:     heap.increase(i, v[i]);
deba@203:   }
deba@203:   std::sort(v.begin(), v.end());
deba@203:   for (int i = 0; i < test_len; ++i) {
deba@203:     check(v[i] == heap.prio() ,"Wrong order in heap increase test.");
deba@203:     heap.pop();
deba@203:   }
deba@203: }
deba@203: 
deba@203: 
deba@203: 
deba@203: template <typename Heap>
deba@203: void dijkstraHeapTest(const Digraph& digraph, const IntArcMap& length, 
deba@203: 		      Node source) {
deba@203:   
deba@203:   typename Dijkstra<Digraph, IntArcMap>::template DefStandardHeap<Heap>::
deba@203:     Create dijkstra(digraph, length);
deba@203: 
deba@203:   dijkstra.run(source);
deba@203: 
deba@203:   for(ArcIt a(digraph); a != INVALID; ++a) {
deba@203:     Node s = digraph.source(a); 
deba@203:     Node t = digraph.target(a);
deba@203:     if (dijkstra.reached(s)) {
deba@203:       check( dijkstra.dist(t) - dijkstra.dist(s) <= length[a],
deba@203:       	     "Error in a shortest path tree!");
deba@203:     }
deba@203:   }
deba@203: 
deba@203:   for(NodeIt n(digraph); n != INVALID; ++n) {
deba@203:     if ( dijkstra.reached(n) && dijkstra.predArc(n) != INVALID ) {
deba@203:       Arc a = dijkstra.predArc(n);
deba@203:       Node s = digraph.source(a);
deba@203:       check( dijkstra.dist(n) - dijkstra.dist(s) == length[a],
deba@203: 	     "Error in a shortest path tree!");
deba@203:     }
deba@203:   }
deba@203: 
deba@203: }
deba@203: 
alpar@100: int main() {
alpar@100: 
alpar@100:   typedef int Item;
alpar@100:   typedef int Prio;
deba@203:   typedef RangeMap<int> ItemIntMap;
deba@203:   
deba@203:   Digraph digraph;
deba@203:   IntArcMap length(digraph);
deba@203:   Node source;
alpar@100: 
deba@203:   std::istringstream input(test_lgf);
deba@203:   digraphReader(input, digraph).
deba@203:     arcMap("capacity", length).
deba@203:     node("source", source).
alpar@100:     run();  
alpar@100:  
alpar@100:   {
alpar@100:     typedef BinHeap<Prio, ItemIntMap> IntHeap;
alpar@100:     checkConcept<Heap<Prio, ItemIntMap>, IntHeap>();
deba@203:     heapSortTest<IntHeap>();
deba@203:     heapIncreaseTest<IntHeap>();
alpar@100:     
deba@203:     typedef BinHeap<Prio, IntNodeMap > NodeHeap;
deba@203:     checkConcept<Heap<Prio, IntNodeMap >, NodeHeap>();
deba@203:     dijkstraHeapTest<NodeHeap>(digraph, length, source);
alpar@100:   }
alpar@100: 
alpar@100:   return 0;
alpar@100: }