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TOBYINK / LINQ-0.000_009 / t / 10array-join.t 

            

              
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=pod
=encoding utf-8
=head1 PURPOSE
Test the C<join> method of L<LINQ::Array>.
=head1 AUTHOR
Toby Inkster E<lt>tobyink@cpan.orgE<gt>.
=head1 COPYRIGHT AND LICENCE
This software is copyright (c) 2014 by Toby Inkster.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut
use Test::Modern;
use LINQ qw( LINQ );
use DisneyData qw( people pets );
my $smush = sub {
        my ( $person, $pet ) = @_;
        return [
                $person ? $person->id   : -1,
                $pet    ? $pet->id      : -1,
                $pet    ? $pet->species : undef,
        ];
};
my $order = sub { join( ":", grep defined, @$_ ) };
{
        my $inner = people->join( pets, sub { $_ }, sub { $_->owner }, $smush );
         
        is_deeply(
                $inner->order_by( -string, $order )->to_array,
                [
                        [qw/ 3 1 Reindeer /],
                        [qw/ 4 3 Rabbit /],
                        [qw/ 4 4 Robin /],
                        [qw/ 4 5 Bluebird /],
                        [qw/ 5 2 Chameleon /],
                ],
                'inner join',
        );
}
{
        my $left = people->join( pets, -left, sub { $_ }, sub { $_->owner }, $smush );
         
        is_deeply(
                $left->order_by( -string, $order )->to_array,
                [
                        [ 1, -1, undef ],    # Olaf doesn't count
                        [ 2, -1, undef ],    # Marshmallow doesn't count
                        [qw/ 3 1 Reindeer /],
                        [qw/ 4 3 Rabbit /],
                        [qw/ 4 4 Robin /],
                        [qw/ 4 5 Bluebird /],
                        [qw/ 5 2 Chameleon /],
                ],
                'left outer join',
        );
}
{
        my $right = people->join( pets, -right, sub { $_ }, sub { $_->owner }, $smush );
         
        is_deeply(
                $right->order_by( -string, $order )->to_array,
                [
                        [qw/ -1 6 Dog /],
                        [qw/ 3 1 Reindeer /],
                        [qw/ 4 3 Rabbit /],
                        [qw/ 4 4 Robin /],
                        [qw/ 4 5 Bluebird /],
                        [qw/ 5 2 Chameleon /],
                ],
                'right outer join',
        );
}
{
        my $outer = people->join( pets, -outer, sub { $_ }, sub { $_->owner }, $smush );
         
        is_deeply(
                $outer->order_by( -string, $order )->to_array,
                [
                        [qw/ -1 6 Dog /],
                        [ 1, -1, undef ],
                        [ 2, -1, undef ],
                        [qw/ 3 1 Reindeer /],
                        [qw/ 4 3 Rabbit /],
                        [qw/ 4 4 Robin /],
                        [qw/ 4 5 Bluebird /],
                        [qw/ 5 2 Chameleon /],
                ],
                'outer join',
        );
}
done_testing;