#!/usr/bin/env perl
use File::Basename;
use Test::More;
use lib File::Basename::dirname(__FILE__)."/../../../lib";
use lib File::Basename::dirname(__FILE__).'/../..';

sub dummy { eval{} };

plan tests => 7;
use UR;
my $x = 1;
my $sentry = UR::Util::on_destroy { $x = 2; dummy() };
is($x, 1, "value is not updated when the sentry has not been destroyed");
$sentry = undef;
is($x, 2, "value is updated when the sentry has been destroyed");

$x = 1;
sub foo {
    my $sentry = UR::Util::on_destroy { $x = 3; dummy(); };
    is($x, 1, "value is not updated while the sentry is still in scope");
}
foo();
is($x, 3, "value is updated after the sentry goes out of scope");

$x = 1;
sub bar {
    my $sentry = UR::Util::on_destroy { $x = 4; dummy(); };
    is($x, 1, "value is updated while the sentry is still in scope");
    die "ouch";
}
eval {
    bar();
};
my $exception = $@;
is($x, 4, "value is updated after the sentry goes out of scope during thrown exception");
ok($@, "exception is passed through even thogh the sentry does an eval internally: $@");