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use strict;
use warnings;
use Test::More;
use Test::Warn;
use lib qw(t/lib);
use DBICTest;
my $schema = DBICTest->init_schema();
#( 1 -> M + M )
my $cd_rs = $schema->resultset('CD')->search( { 'me.title' => 'Forkful of bees' } );
my $pr_cd_rs = $cd_rs->search( {}, { prefetch => [qw/tracks tags/], } );
my $tracks_rs = $cd_rs->first->tracks;
my $tracks_count = $tracks_rs->count;
$schema->is_executed_querycount( sub {
my $pcr = $pr_cd_rs;
my $pr_tracks_rs;
warnings_exist {
$pr_tracks_rs = $pcr->first->tracks;
} [], 'no warning on attempt to prefetch several same level has_many\'s (1 -> M + M)' ;
is( $pr_tracks_rs->count, $tracks_count,
'equal count of prefetched relations over several same level has_many\'s (1 -> M + M)'
);
is( $pr_tracks_rs->all, $tracks_count,
'equal amount of objects returned with and without prefetch over several same level has_many\'s (1 -> M + M)'
);
}, 1, 'prefetch one->(has_many,has_many) ran exactly 1 query' );
#( M -> 1 -> M + M )
my $note_rs =
$schema->resultset('LinerNotes')->search( { notes => 'Buy Whiskey!' } );
my $pr_note_rs =
$note_rs->search( {}, { prefetch => { cd => [qw/tracks tags/] }, } );
my $tags_rs = $note_rs->first->cd->tags;
my $tags_count = $tags_rs->count;
$schema->is_executed_querycount( sub {
my $pnr = $pr_note_rs;
my $pr_tags_rs;
warnings_exist {
$pr_tags_rs = $pnr->first->cd->tags;
} [], 'no warning on attempt to prefetch several same level has_many\'s (M -> 1 -> M + M)';
is( $pr_tags_rs->count, $tags_count,
'equal count of prefetched relations over several same level has_many\'s (M -> 1 -> M + M)'
);
is( $pr_tags_rs->all, $tags_count,
'equal amount of objects with and without prefetch over several same level has_many\'s (M -> 1 -> M + M)'
);
}, 1, 'prefetch one->(has_many,has_many) ran exactly 1 query' );
done_testing;
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