Abdelrahman Said
74 lines
2.2 KiB
C
74 lines
2.2 KiB
C
/*
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igraph library.
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Copyright (C) 2021 The igraph development team <igraph@igraph.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <igraph.h>
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#include <unistd.h>
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#include "test_utilities.h"
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int main(void) {
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igraph_t g_in;
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igraph_t g_out;
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FILE *file;
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igraph_bool_t same;
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igraph_set_attribute_table(&igraph_cattribute_table);
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igraph_small(&g_in, 4, IGRAPH_DIRECTED,
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0, 1, 0, 1, 0, 1,
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1, 2, 2, 3, 3, 0,
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-1);
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SETEAN(&g_in, "edge_attr", 0, 12.3); /* edge 0-1 */
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SETEAN(&g_in, "edge_attr", 4, -IGRAPH_INFINITY); /* edge 2-3 */
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SETVAS(&g_in, "vertex_attr", 0, "vertex_name0");
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SETVAS(&g_in, "vertex_attr", 1, "vertex_name1");
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SETVAS(&g_in, "vertex_attr", 2, "vertex_name2");
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SETVAS(&g_in, "vertex_attr", 3, "vertex_name3");
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char filename[] = "ncol.tmp";
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file = fopen(filename, "w");
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IGRAPH_ASSERT(file != NULL); /* make sure that the file was created successfully */
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igraph_write_graph_ncol(&g_in, file, "vertex_attr", "edge_attr");
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fclose(file);
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file = fopen(filename, "r");
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IGRAPH_ASSERT(file);
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igraph_read_graph_ncol(&g_out, file, NULL, 1, IGRAPH_ADD_WEIGHTS_YES,
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IGRAPH_DIRECTED);
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/* is_same_graph() checks that vertex and edge lists are the same,
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* but does not verify attributes. */
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igraph_is_same_graph(&g_in, &g_out, &same);
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if (!same) {
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IGRAPH_FATAL("Written and read graph are not the same.");
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}
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print_attributes(&g_out);
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fclose(file);
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unlink(filename);
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igraph_destroy(&g_in);
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igraph_destroy(&g_out);
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VERIFY_FINALLY_STACK();
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return 0;
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}
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