#!/usr/bin/perl use Test; BEGIN { plan tests => 4 } use AI::DecisionTree::Instance; ok(1); my $x = 0; { local *{"AI::DecisionTree::Instance::DESTROY"} = sub { $x = 1 }; { my $i = new AI::DecisionTree::Instance([3,4], 4, "foo"); ok $x, 0; } ok $x, 1; } ok $x, 1;