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use Test::More tests => 12;
use Graph;
my $g = Graph->new;
$g->add_cycle("a", "b", "c");
ok( $g->has_edge("a", "b") );
ok( ! $g->has_edge("a", "c") ); # @todo: hyperedges
ok( ! $g->has_edge("b", "a") );
ok( $g->has_edge("b", "c") );
ok( $g->has_edge("c", "a") );
ok( ! $g->has_edge("c", "b") );
my $h = Graph->new(undirected => 1);
$h->add_cycle("a", "b", "c");
ok( $h->has_edge("a", "b") );
ok( $h->has_edge("a", "c") );
ok( $h->has_edge("b", "a") );
ok( $h->has_edge("b", "c") );
ok( $h->has_edge("c", "a") );
ok( $h->has_edge("c", "b") );
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