CPAN::Groonga

use strict;
use warnings;
use Test::More;

use_ok 'Data::Object::Hash';
# deprecated
# can_ok 'Data::Object::Hash', 'exists';

use Scalar::Util 'refaddr';

subtest 'test the exists method' => sub {
  my $hash = Data::Object::Hash->new({1 .. 8, 9, undef});

  my @argument = (1);
  my $exists   = $hash->exists(@argument);

  isnt refaddr($hash), refaddr($exists);
  is $exists, 1;

  isa_ok $hash,   'Data::Object::Hash';
  isa_ok $exists, 'Data::Object::Number';
};

ok 1 and done_testing;