Bring back 5.8.1 support

[gitmo/Moo.git] / t / accessor-weaken.t

use strictures 1;
use Test::More;

{
  package Foo;

  use Moo;

  has one => (is => 'ro', weak_ref => 1);
}

my $ref = {};
my $foo = Foo->new(one => $ref);
is($foo->one, $ref, 'value present');
ok(Scalar::Util::isweak($foo->{one}), 'value weakened');
undef $ref;
ok (!defined $foo->{one}, 'weak value gone');

# test readonly SVs
sub mk_ref { \ 'yay' };
my $foo_ro = eval { Foo->new(one => mk_ref()) };
if ($] < 5.008003) {
  like(
    $@,
    qr/\QReference to readonly value in "one" can not be weakened on Perl < 5.8.3/,
    'Expected exception thrown on old perls'
  );
}
else {
  is(${$foo_ro->one},'yay', 'value present');
  ok(Scalar::Util::isweak($foo_ro->{one}), 'value weakened');

  { no warnings 'redefine'; *mk_ref = sub {} }
  ok (!defined $foo_ro->{one}, 'optree reaped, ro static value gone');
}

done_testing;