/* -*- mode: C -*-  */
/*
   IGraph library.
   Copyright (C) 2010-2012  Gabor Csardi <csardi.gabor@gmail.com>
   334 Harvard st, Cambridge MA, 02139 USA

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
   02110-1301 USA

*/

#include <igraph.h>
#include <stdio.h>

#define FAIL(msg, error) do { printf(msg "\n") ; return error; } while (0)

int main() {

    igraph_t graph;
    igraph_vector_t sep;
    igraph_bool_t result;

    /* Simple star graph, remove the center */
    igraph_star(&graph, 10, IGRAPH_STAR_UNDIRECTED, 0);
    igraph_is_separator(&graph, igraph_vss_1(0), &result);
    if (!result) {
        FAIL("Center of star graph failed.", 1);
    }

    /* Same graph, but another vertex */
    igraph_is_separator(&graph, igraph_vss_1(6), &result);
    if (result) {
        FAIL("Non-center of star graph failed.", 2);
    }

    /* Same graph, all vertices but the center */
    igraph_is_separator(&graph, igraph_vss_seq(1, 9), &result);
    if (result) {
        FAIL("All non-central vertices of star graph failed.", 5);
    }
    igraph_destroy(&graph);

    /* Same graph, all vertices */
    igraph_is_separator(&graph, igraph_vss_seq(0, 9), &result);
    if (result) {
        FAIL("All vertices of star graph failed.", 6);
    }
    igraph_destroy(&graph);

    /* Karate club */
    igraph_famous(&graph, "zachary");
    igraph_vector_init(&sep, 0);
    igraph_vector_push_back(&sep, 32);
    igraph_vector_push_back(&sep, 33);
    igraph_is_separator(&graph, igraph_vss_vector(&sep), &result);
    if (!result) {
        FAIL("Karate network (32,33) failed", 3);
    }

    igraph_vector_resize(&sep, 5);
    VECTOR(sep)[0] = 8;
    VECTOR(sep)[1] = 9;
    VECTOR(sep)[2] = 19;
    VECTOR(sep)[3] = 30;
    VECTOR(sep)[4] = 31;
    igraph_is_separator(&graph, igraph_vss_vector(&sep), &result);
    if (result) {
        FAIL("Karate network (8,9,19,30,31) failed", 4);
    }

    igraph_destroy(&graph);
    igraph_vector_destroy(&sep);

    return 0;
}