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use strict;
use PNI ':-D';
use Test::More tests => 3;
my $node1 = node;
isa_ok $node1 , 'PNI::Node';
my $node2 = node;
$node1->out;
$node2->in;
my $edge = edge $node1 => $node2, 'out' => 'in';
isa_ok $edge, 'PNI::Edge';
my $scen = PNI::scen;
isa_ok $scen, 'PNI::Scenario';