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use Test::More tests => 28;
use Graph;
my $g1 = Graph->new;
ok ( !$g1->countedged );
my $g2 = Graph->new( countedged => 1 );
ok ( $g2->countedged );
is( $g2->edges, 0 );
is( $g2->unique_edges, 0 );
ok( $g2->add_edge('a', 'b') );
is( $g2->edges, 1 );
is( $g2->unique_edges, 1 );
ok( $g2->add_edge('a', 'b') );
is( $g2->edges, 2 );
is( $g2->unique_edges, 1 );
ok( $g2->add_edge('b', 'c') );
is( $g2->edges, 3 );
is( $g2->unique_edges, 2 );
ok( $g2->add_edge('a', 'b') );
is( $g2->edges, 4 );
is( $g2->unique_edges, 2 );
ok( $g2->delete_edge('b', 'c') );
is( $g2->edges, 3 );
is( $g2->unique_edges, 1 );
ok( $g2->delete_edge('a', 'b') );
is( $g2->edges, 2 );
is( $g2->unique_edges, 1 );
ok( $g2->delete_edge('a', 'b') );
is( $g2->edges, 1 );
is( $g2->unique_edges, 1 );
ok( $g2->delete_edge('a', 'b') );
is( $g2->edges, 0 );
is( $g2->unique_edges, 0 );
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