CPAN::Groonga

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

use_ok 'Data::Object::Array';
# deprecated
# can_ok 'Data::Object::Array', 'pairs_array';

use Scalar::Util 'refaddr';

subtest 'test the pairs_array method' => sub {
  my $array = Data::Object::Array->new([1 .. 5]);

  my @argument    = ();
  my $pairs_array = $array->pairs_array(@argument);

  isnt refaddr($array), refaddr($pairs_array);
  is_deeply $pairs_array, [[0, 1], [1, 2], [2, 3], [3, 4], [4, 5]];

  isa_ok $array,       'Data::Object::Array';
  isa_ok $pairs_array, 'Data::Object::Array';
};

ok 1 and done_testing;