CPAN::Groonga

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

use_ok 'Data::Object::String';
# deprecated
# can_ok 'Data::Object::String', 'uc';

use Scalar::Util 'refaddr';

subtest 'test the uc method' => sub {
  my $string     = Data::Object::String->new('exciting');
  my $uppercased = $string->uc;

  isnt refaddr($string), refaddr($uppercased);
  is "$uppercased", 'EXCITING';

  isa_ok $string,     'Data::Object::String';
  isa_ok $uppercased, 'Data::Object::String';
};

ok 1 and done_testing;