alpar@906: /* -*- C++ -*-
ladanyi@1435:  * test/min_cost_flow_test.cc - Part of LEMON, a generic C++ optimization library
alpar@906:  *
alpar@1164:  * Copyright (C) 2005 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
alpar@1359:  * (Egervary Research Group on Combinatorial Optimization, EGRES).
alpar@906:  *
alpar@906:  * Permission to use, modify and distribute this software is granted
alpar@906:  * provided that this copyright notice appears in all copies. For
alpar@906:  * precise terms see the accompanying LICENSE file.
alpar@906:  *
alpar@906:  * This software is provided "AS IS" with no warranty of any kind,
alpar@906:  * express or implied, and with no claim as to its suitability for any
alpar@906:  * purpose.
alpar@906:  *
alpar@906:  */
alpar@906: 
alpar@899: #include <iostream>
alpar@899: #include "test_tools.h"
alpar@921: #include <lemon/list_graph.h>
alpar@921: #include <lemon/min_cost_flow.h>
alpar@899: //#include <path.h>
alpar@899: //#include <maps.h>
alpar@899: 
alpar@921: using namespace lemon;
alpar@899: 
alpar@899: 
alpar@899: bool passed = true;
alpar@899: /*
alpar@899: void check(bool rc, char *msg="") {
alpar@899:   passed = passed && rc;
alpar@899:   if(!rc) {
alpar@899:     std::cerr << "Test failed! ("<< msg << ")" << std::endl; \
alpar@899:  
alpar@899: 
alpar@899:   }
alpar@899: }
alpar@899: */
alpar@899: 
alpar@899: 
alpar@899: int main()
alpar@899: {
marci@941:   typedef ListGraph Graph;
marci@941:   typedef Graph::Node Node;
marci@941:   typedef Graph::Edge Edge;
alpar@899: 
marci@941:   Graph graph;
alpar@899: 
alpar@899:   //Ahuja könyv példája
alpar@899: 
alpar@899:   Node s=graph.addNode();
alpar@899:   Node v1=graph.addNode();  
alpar@899:   Node v2=graph.addNode();
alpar@899:   Node v3=graph.addNode();
alpar@899:   Node v4=graph.addNode();
alpar@899:   Node v5=graph.addNode();
alpar@899:   Node t=graph.addNode();
alpar@899: 
alpar@899:   Edge s_v1=graph.addEdge(s, v1);
alpar@899:   Edge v1_v2=graph.addEdge(v1, v2);
alpar@899:   Edge s_v3=graph.addEdge(s, v3);
alpar@899:   Edge v2_v4=graph.addEdge(v2, v4);
alpar@899:   Edge v2_v5=graph.addEdge(v2, v5);
alpar@899:   Edge v3_v5=graph.addEdge(v3, v5);
alpar@899:   Edge v4_t=graph.addEdge(v4, t);
alpar@899:   Edge v5_t=graph.addEdge(v5, t);
alpar@899:   
alpar@899: 
marci@941:   Graph::EdgeMap<int> length(graph);
alpar@899: 
alpar@899:   length.set(s_v1, 6);
alpar@899:   length.set(v1_v2, 4);
alpar@899:   length.set(s_v3, 10);
alpar@899:   length.set(v2_v4, 5);
alpar@899:   length.set(v2_v5, 1);
alpar@899:   length.set(v3_v5, 4);
alpar@899:   length.set(v4_t, 8);
alpar@899:   length.set(v5_t, 8);
alpar@899: 
marci@941:   Graph::EdgeMap<int> capacity(graph);
alpar@899: 
alpar@899:   capacity.set(s_v1, 2);
alpar@899:   capacity.set(v1_v2, 2);
alpar@899:   capacity.set(s_v3, 1);
alpar@899:   capacity.set(v2_v4, 1);
alpar@899:   capacity.set(v2_v5, 1);
alpar@899:   capacity.set(v3_v5, 1);
alpar@899:   capacity.set(v4_t, 1);
alpar@899:   capacity.set(v5_t, 2);
alpar@899: 
alpar@899:   //  ConstMap<Edge, int> const1map(1);
alpar@899:   std::cout << "Mincostflows algorithm test..." << std::endl;
alpar@899: 
marci@941:   MinCostFlow< Graph, Graph::EdgeMap<int>, Graph::EdgeMap<int> >
marci@941:     surb_test(graph, length, capacity, s, t);
alpar@899: 
alpar@899:   int k=1;
alpar@899: 
marci@941:   surb_test.augment();
marci@941:   check(  surb_test.flowValue() == 1 && surb_test.totalLength() == 19,"One path, total length should be 19");
marci@941: 
marci@941:   check(  surb_test.run(k) == 1 && surb_test.totalLength() == 19,"One path, total length should be 19");
alpar@899: 
alpar@899:   check(surb_test.checkComplementarySlackness(), "Is the primal-dual solution pair really optimal?");
alpar@899:   
alpar@899:   k=2;
alpar@899:   
marci@941:   check(  surb_test.run(k) == 2 && surb_test.totalLength() == 41,"Two paths, total length should be 41");
alpar@899: 
alpar@899:   check(surb_test.checkComplementarySlackness(), "Is the primal-dual solution pair really optimal?");
alpar@899:   
marci@941:   surb_test.augment();
marci@941:   surb_test.augment();
marci@941:   surb_test.augment();
alpar@899:   k=4;
alpar@899: 
marci@941:   check(  surb_test.run(k) == 3 && surb_test.totalLength() == 64,"Three paths, total length should be 64");
alpar@899: 
alpar@899:   check(surb_test.checkComplementarySlackness(), "Is the primal-dual solution pair really optimal?");
alpar@899: 
alpar@899: 
marci@941:   std::cout << (passed ? "All tests passed." : "Some of the tests failed!!!")
marci@941: 	    << std::endl;
alpar@899: 
alpar@899:   return passed ? 0 : 1;
alpar@899: 
alpar@899: }