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// (C) Copyright David Gleich 2007
//
// Use, modification and distribution are subject to the
// Boost Software License, Version 1.0 (See accompanying file
// LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
#include <vector>
#include <boost/graph/adjacency_list.hpp>
#include <boost/graph/core_numbers.hpp>
#include <boost/property_map/property_map.hpp>
#include <stdio.h>
using namespace boost;
const char* errstr = "";
int test_1()
{
// core numbers of sample graph
typedef adjacency_list< vecS, vecS, undirectedS > Graph;
Graph G(21);
add_edge(0, 1, G);
add_edge(1, 2, G);
add_edge(1, 3, G);
add_edge(2, 3, G);
add_edge(1, 4, G);
add_edge(3, 4, G);
add_edge(4, 5, G);
add_edge(4, 6, G);
add_edge(5, 6, G);
add_edge(4, 7, G);
add_edge(5, 7, G);
add_edge(6, 7, G);
add_edge(7, 8, G);
add_edge(3, 9, G);
add_edge(8, 9, G);
add_edge(8, 10, G);
add_edge(9, 10, G);
add_edge(10, 11, G);
add_edge(10, 12, G);
add_edge(3, 13, G);
add_edge(9, 13, G);
add_edge(3, 14, G);
add_edge(9, 14, G);
add_edge(13, 14, G);
add_edge(16, 17, G);
add_edge(16, 18, G);
add_edge(17, 19, G);
add_edge(18, 19, G);
add_edge(19, 20, G);
std::vector< int > core_nums(num_vertices(G));
core_numbers(
G, make_iterator_property_map(core_nums.begin(), get(vertex_index, G)));
for (size_t i = 0; i < num_vertices(G); ++i)
{
printf("vertex %3lu : %i\n", (unsigned long)i, core_nums[i]);
}
int correct[21]
= { 1, 2, 2, 3, 3, 3, 3, 3, 2, 3, 2, 1, 1, 3, 3, 0, 2, 2, 2, 2, 1 };
for (size_t i = 0; i < num_vertices(G); ++i)
{
if (core_nums[i] != correct[i])
{
return 1; // error!
}
}
return 0;
}
int test_2()
{
// core numbers of sample graph
typedef adjacency_list< listS, vecS, undirectedS, no_property,
property< edge_weight_t, int > >
graph_t;
int num_nodes = 3;
typedef std::pair< int, int > Edge;
Edge edge_array[] = { Edge(0, 1), Edge(0, 2), Edge(1, 2) };
int weights[] = { -1, -2, -2 };
int num_arcs = sizeof(edge_array) / sizeof(Edge);
graph_t G(edge_array, edge_array + num_arcs, weights, num_nodes);
std::vector< int > core_nums(num_vertices(G));
weighted_core_numbers(
G, make_iterator_property_map(core_nums.begin(), get(vertex_index, G)));
for (size_t i = 0; i < num_vertices(G); ++i)
{
printf("vertex %3lu : %i\n", (unsigned long)i, core_nums[i]);
}
int correct[3] = { -1, -1, -4 };
for (size_t i = 0; i < num_vertices(G); ++i)
{
if (core_nums[i] != correct[i])
{
return 1; // error!
}
}
return 0;
}
int test_3()
{
// core numbers of a directed graph, the core numbers of a directed
// cycle are always one
typedef adjacency_list< vecS, vecS, directedS > graph_t;
int num_nodes = 5;
typedef std::pair< int, int > Edge;
Edge edge_array[]
= { Edge(0, 1), Edge(1, 2), Edge(2, 3), Edge(3, 4), Edge(4, 0) };
int num_arcs = sizeof(edge_array) / sizeof(Edge);
graph_t G(edge_array, edge_array + num_arcs, num_nodes);
std::vector< int > core_nums(num_vertices(G));
core_numbers(
G, make_iterator_property_map(core_nums.begin(), get(vertex_index, G)));
for (size_t i = 0; i < num_vertices(G); ++i)
{
printf("vertex %3lu : %i\n", (unsigned long)i, core_nums[i]);
}
int correct[5] = { 1, 1, 1, 1, 1 };
for (size_t i = 0; i < num_vertices(G); ++i)
{
if (core_nums[i] != correct[i])
{
return 1; // error!
}
}
return 0;
}
int main(int, char**)
{
int nfail = 0, ntotal = 0;
int rval;
const char* name;
name = "core_numbers";
rval = test_1();
ntotal++;
if (rval != 0)
{
nfail++;
printf("%20s %50s\n", name, errstr);
}
else
{
printf("%20s success\n", name);
}
name = "weighted_core_numbers";
rval = test_2();
ntotal++;
if (rval != 0)
{
nfail++;
printf("%20s %50s\n", name, errstr);
}
else
{
printf("%20s success\n", name);
}
name = "directed_corenums";
rval = test_3();
ntotal++;
if (rval != 0)
{
nfail++;
printf("%20s %50s\n", name, errstr);
}
else
{
printf("%20s success\n", name);
}
printf("\n");
printf("Total tests : %3i\n", ntotal);
printf("Total failed : %3i\n", nfail);
return nfail != 0;
}
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