63 lines
1.4 KiB
C++
63 lines
1.4 KiB
C++
#include "igraph/igraph.h"
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#include <assert.h>
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void print_vector(igraph_vector_t *v, FILE *f) {
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long int i;
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for (i=0; i<igraph_vector_size(v); i++) {
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fprintf(f, " %li", (long int) VECTOR(*v)[i]);
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}
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fprintf(f, "\n");
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}
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int main() {
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igraph_t g;
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int ret;
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ret=igraph_empty(&g, 0, IGRAPH_DIRECTED);
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igraph_es_t es;
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igraph_integer_t edge_num_before=0, edge_num_after=0;
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int v[10];
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int i=0;
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for(i=0; i<sizeof(v)/sizeof(int); i++)
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{
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v[i]=i;
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igraph_add_vertices(&g, 1, NULL); //Add 1 vertice.
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}
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igraph_add_edge(&g, v[0], v[1]);
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igraph_add_edge(&g, v[0], v[1]);
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igraph_add_edge(&g, v[2], v[3]);
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int edge_id=0;
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ret=igraph_get_eid(&g, &edge_id, v[2], v[3], IGRAPH_DIRECTED, 0);
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assert(edge_id>0);
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ret=igraph_es_pairs_small(&es, IGRAPH_DIRECTED, v[0], v[1], -1);
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assert(ret==IGRAPH_SUCCESS);
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edge_num_before=igraph_ecount(&g);
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ret=igraph_delete_edges(&g, es);
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edge_num_after=igraph_ecount(&g);
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assert(edge_num_before-edge_num_after==1);
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assert(ret==IGRAPH_SUCCESS);
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igraph_es_destroy(&es);
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ret=igraph_es_pairs_small(&es, IGRAPH_DIRECTED, v[3], v[4], -1);
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assert(ret==IGRAPH_SUCCESS);
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edge_num_before=igraph_ecount(&g);
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/* error test, no such edge to delete */
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igraph_set_error_handler(igraph_error_handler_ignore);
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ret=igraph_delete_edges(&g, es);
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edge_num_after=igraph_ecount(&g);
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assert(edge_num_before=edge_num_after);
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assert(ret!=IGRAPH_SUCCESS);
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igraph_es_destroy(&es);
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igraph_destroy(&g);
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return 0;
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}
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