Abdelrahman Said
76 lines
2.2 KiB
C
76 lines
2.2 KiB
C
/*
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igraph library.
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Copyright (C) 2024 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 "../unit/test_utilities.h"
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/* Regression test for https://github.com/igraph/igraph/issues/1814 */
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void test_igraph_to_undirected(igraph_to_undirected_t mode) {
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igraph_t g;
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igraph_attribute_combination_t comb;
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igraph_small(&g, 4, IGRAPH_DIRECTED,
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0,1, 0,1, 1,0,
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1,1, 1,1,
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-1);
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SETEAN(&g, "weight", 0, 1);
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SETEAN(&g, "weight", 1, 2);
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SETEAN(&g, "weight", 2, 3);
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SETEAN(&g, "weight", 3, 4);
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SETEAN(&g, "weight", 4, 2);
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igraph_attribute_combination(
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&comb, "weight", IGRAPH_ATTRIBUTE_COMBINE_SUM,
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IGRAPH_NO_MORE_ATTRIBUTES
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);
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igraph_to_undirected(&g, mode, &comb);
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igraph_attribute_combination_destroy(&comb);
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igraph_write_graph_gml(&g, stdout, IGRAPH_WRITE_GML_DEFAULT_SW, 0, "");
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igraph_destroy(&g);
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VERIFY_FINALLY_STACK();
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}
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int main(void) {
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igraph_set_attribute_table(&igraph_cattribute_table);
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printf("to_undirected(COLLAPSE)\n");
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printf("=======================\n\n");
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test_igraph_to_undirected(IGRAPH_TO_UNDIRECTED_COLLAPSE);
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printf("\n");
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printf("to_undirected(MUTUAL)\n");
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printf("=====================\n\n");
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test_igraph_to_undirected(IGRAPH_TO_UNDIRECTED_MUTUAL);
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printf("\n");
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printf("to_undirected(EACH)\n");
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printf("===================\n\n");
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test_igraph_to_undirected(IGRAPH_TO_UNDIRECTED_EACH);
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printf("\n");
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VERIFY_FINALLY_STACK();
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return 0;
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}
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