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/* -*- mode: C -*- */
/*
IGraph library.
Copyright (C) 2006-2012 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 "test_utilities.h"
int main(void) {
igraph_t g;
/* empty directed graph, zero vertices */
igraph_empty(&g, 0, 1);
IGRAPH_ASSERT(igraph_vcount(&g) == 0);
IGRAPH_ASSERT(igraph_ecount(&g) == 0);
igraph_destroy(&g);
/* empty undirected graph, zero vertices */
igraph_empty(&g, 0, 0);
IGRAPH_ASSERT(igraph_vcount(&g) == 0);
IGRAPH_ASSERT(igraph_ecount(&g) == 0);
igraph_destroy(&g);
/* empty directed graph, 20 vertices */
igraph_empty(&g, 20, 1);
IGRAPH_ASSERT(igraph_vcount(&g) == 20);
IGRAPH_ASSERT(igraph_ecount(&g) == 0);
igraph_destroy(&g);
/* empty undirected graph, 30 vertices */
igraph_empty(&g, 30, 0);
IGRAPH_ASSERT(igraph_vcount(&g) == 30);
IGRAPH_ASSERT(igraph_ecount(&g) == 0);
igraph_destroy(&g);
/* error: negative number of vertices */
CHECK_ERROR(igraph_empty(&g, -1, 0), IGRAPH_EINVAL);
VERIFY_FINALLY_STACK();
return 0;
}
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