graph/test/labeled_graph.cpp

// (C) Copyright 2009 Andrew Sutton
//
// 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 <string>

#include <boost/assert.hpp>
#include <boost/concept/assert.hpp>
#include <boost/range.hpp>

#include <boost/graph/graph_concepts.hpp>
#include <boost/graph/undirected_graph.hpp>
#include <boost/graph/directed_graph.hpp>
#include <boost/graph/labeled_graph.hpp>

#include "typestr.hpp"

using std::string;
using namespace boost;

void test_concepts();
void test_norm();
void test_temp();
void test_bacon();
void test_remove_labeled_vertex();
void test_multiple_associative_container();

int main()
{
    test_concepts();
    test_norm();
    test_temp();
    test_bacon();
    test_remove_labeled_vertex();
    test_multiple_associative_container();
}

//////////////////////////////////////
// Graph Concepts
//////////////////////////////////////

void test_concepts()
{
    // The labeled mutable graph hides the add_ and remove_ vertex functions
    // from the mutable graph concept, so VertexMutableGraphConcept will not be
    // tested here.
    {
        typedef labeled_graph< directed_graph<>, unsigned > Graph;
        BOOST_CONCEPT_ASSERT((VertexListGraphConcept< Graph >));
        BOOST_CONCEPT_ASSERT((AdjacencyGraphConcept< Graph >));
        BOOST_CONCEPT_ASSERT((EdgeMutableGraphConcept< Graph >));
    }
    {
        typedef labeled_graph< undirected_graph<>, unsigned > Graph;
        BOOST_CONCEPT_ASSERT((VertexListGraphConcept< Graph >));
        BOOST_CONCEPT_ASSERT((AdjacencyGraphConcept< Graph >));
        BOOST_CONCEPT_ASSERT((EdgeMutableGraphConcept< Graph >));
    }
}

//////////////////////////////////////
// Utility Functions and Types
//////////////////////////////////////

struct Actor
{
    Actor() {}
    Actor(string const& s) : name(s) {}
    string name;
};

struct Movie
{
    Movie() {}
    Movie(string const& s) : name(s) {}
    string name;
};

template < typename Graph > void init_graph(Graph& g)
{
    for (int i = 0; i < 6; ++i)
    {
        add_vertex(i, g);
    }
}

template < typename Graph > void label_graph(Graph& g)
{
    typedef typename graph_traits< Graph >::vertex_iterator Iter;
    Iter f, l;
    int x = 0;
    for (boost::tie(f, l) = vertices(g); f != l; ++f, ++x)
    {
        label_vertex(*f, x, g);
    }
}

template < typename Graph > void build_graph(Graph& g)
{
    // This is the graph shown on the wikipedia page for Graph Theory.
    add_edge_by_label(5, 3, g);
    add_edge_by_label(3, 4, g);
    add_edge_by_label(3, 2, g);
    add_edge_by_label(4, 1, g);
    add_edge_by_label(4, 0, g);
    add_edge_by_label(2, 1, g);
    add_edge_by_label(1, 0, g);
    BOOST_ASSERT(num_vertices(g) == 6);
    BOOST_ASSERT(num_edges(g) == 7);
}

//////////////////////////////////////
// Temporal Labelings
//////////////////////////////////////

void test_norm()
{
    {
        typedef labeled_graph< undirected_graph<>, unsigned > Graph;
        Graph g;
        init_graph(g);
        build_graph(g);
    }

    {
        typedef labeled_graph< directed_graph<>, unsigned > Graph;
        Graph g;
        init_graph(g);
        build_graph(g);
    }
}

//////////////////////////////////////
// Temporal Labelings
//////////////////////////////////////

void test_temp()
{
    typedef undirected_graph<> Graph;
    typedef labeled_graph< Graph*, int > LabGraph;
    Graph g(6);
    LabGraph lg(&g);
    label_graph(lg);
    build_graph(lg);
}

//////////////////////////////////////
// Labeled w/ Properties
//////////////////////////////////////

void test_bacon()
{
    string bacon("Kevin Bacon");
    string slater("Christian Slater");
    Movie murder("Murder in the First");
    {

        typedef labeled_graph< undirected_graph< Actor, Movie >, string > Graph;
        Graph g;
        add_vertex(bacon, g);
        add_vertex(slater, g);
        add_edge_by_label(bacon, slater, murder, g);
    }

    {
        string bacon = "Kevin Bacon";
        string slater = "Christian Slater";

        typedef labeled_graph< directed_graph< Actor, Movie >, string > Graph;
        Graph g;
        add_vertex(bacon, g);
        add_vertex(slater, g);
        add_edge_by_label(bacon, slater, murder, g);
    }
}

void test_remove_labeled_vertex()
{
    typedef labeled_graph< directed_graph<>, string > Graph;

    Graph g;
    g.add_vertex("foo");

    auto v = g.vertex("foo");
    BOOST_ASSERT(v != nullptr);

    g.remove_vertex("foo");

    auto v2 = g.vertex("foo");
    BOOST_ASSERT(v2 == nullptr);
}

void test_multiple_associative_container()
{
    typedef labeled_graph<adjacency_list<listS, multisetS, directedS>, string, multimapS> Graph;

    Graph g;
    g.add_vertex("test");
    g.add_vertex("test");

    BOOST_ASSERT(num_vertices(g) == 2);

    g.remove_vertex("test");
    BOOST_ASSERT(num_vertices(g) == 1);

    g.remove_vertex("test");
    BOOST_ASSERT(num_vertices(g) == 0);
}