CPAN::Groonga

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

use_ok 'Data::Object::Number';
# deprecated
# can_ok 'Data::Object::Number', 'decr';

use Scalar::Util 'refaddr';

subtest 'test the decr method' => sub {
  my $number = Data::Object::Number->new(123456789);
  my $decr   = $number->decr();

  isnt refaddr($number), refaddr($decr);
  is $decr, 123456788;

  isa_ok $number, 'Data::Object::Number';
  isa_ok $decr,   'Data::Object::Number';
};

ok 1 and done_testing;