use strict;
use warnings;
use Test::More;
use lib qw(t/lib);
use DBICTest;
my $schema = DBICTest->init_schema();
my $sdebug = $schema->storage->debug;
# once the following TODO is complete, remove the 2 warning tests immediately
# after the TODO block
# (the TODO block itself contains tests ensuring that the warns are removed)
TODO: {
local $TODO = 'Prefetch of multiple has_many rels at the same level (currently warn to protect the clueless git)';
#( 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 = $tracks_rs->count;
my ($pr_tracks_rs, $pr_tracks_count);
my $queries = 0;
$schema->storage->debugcb(sub { $queries++ });
$schema->storage->debug(1);
my $o_mm_warn;
{
local $SIG{__WARN__} = sub { $o_mm_warn = shift };
$pr_tracks_rs = $pr_cd_rs->first->tracks;
};
$pr_tracks_count = $pr_tracks_rs->count;
ok(! $o_mm_warn, 'no warning on attempt to prefetch several same level has_many\'s (1 -> M + M)');
{
local $TODO;
is($queries, 1, 'prefetch one->(has_many,has_many) ran exactly 1 query');
}
$schema->storage->debugcb (undef);
$schema->storage->debug ($sdebug);
is($pr_tracks_count, $tracks_count, 'equal count of prefetched relations over several same level has_many\'s (1 -> M + M)');
is ($pr_tracks_rs->all, $tracks_rs->all, 'equal amount of objects returned with and without prefetch over several same level has_many\'s (1 -> M + M)');
#( 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 = $tags_rs->count;
my ($pr_tags_rs, $pr_tags_count);
$queries = 0;
$schema->storage->debugcb(sub { $queries++ });
$schema->storage->debug(1);
my $m_o_mm_warn;
{
local $SIG{__WARN__} = sub { $m_o_mm_warn = shift };
$pr_tags_rs = $pr_note_rs->first->cd->tags;
};
$pr_tags_count = $pr_tags_rs->count;
ok(! $m_o_mm_warn, 'no warning on attempt to prefetch several same level has_many\'s (M -> 1 -> M + M)');
{
local $TODO;
is($queries, 1, 'prefetch one->(has_many,has_many) ran exactly 1 query');
$schema->storage->debugcb (undef);
$schema->storage->debug ($sdebug);
is($pr_tags_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_rs->all, 'equal amount of objects with and without prefetch over several same level has_many\'s (M -> 1 -> M + M)');
}
}
# remove this closure once the TODO above is working
{
my $warn_re = qr/will explode the number of row objects retrievable via/;
my (@w, @dummy);
local $SIG{__WARN__} = sub { $_[0] =~ $warn_re ? push @w, @_ : warn @_ };
my $rs = $schema->resultset('CD')->search ({ 'me.title' => 'Forkful of bees' }, { prefetch => [qw/tracks tags/] });
@w = ();
@dummy = $rs->first;
is (@w, 1, 'warning on attempt prefetching several same level has_manys (1 -> M + M)');
my $rs2 = $schema->resultset('LinerNotes')->search ({ notes => 'Buy Whiskey!' }, { prefetch => { cd => [qw/tags tracks/] } });
@w = ();
@dummy = $rs2->first;
is (@w, 1, 'warning on attempt prefetching several same level has_manys (M -> 1 -> M + M)');
}
done_testing;