Merge fix of RT54039 from prefetch branch

[dbsrgits/DBIx-Class.git] / t / prefetch / one_to_many_to_one.t

diff --git a/t/prefetch/one_to_many_to_one.t b/t/prefetch/one_to_many_to_one.t
new file mode 100644 (file)
index 0000000..daa76bd
--- /dev/null
+++ b/t/prefetch/one_to_many_to_one.t
@@ -0,0 +1,35 @@
+use strict;
+use warnings;
+
+use Test::More;
+use Test::Exception;
+
+use lib qw(t/lib);
+use DBICTest;
+
+my $schema = DBICTest->init_schema();
+
+my $artist = $schema->resultset ('Artist')->find ({artistid => 1});
+is ($artist->cds->count, 3, 'Correct number of CDs');
+is ($artist->cds->search_related ('genre')->count, 1, 'Only one of the cds has a genre');
+
+my $queries = 0;
+my $orig_cb = $schema->storage->debugcb;
+$schema->storage->debugcb(sub { $queries++ });
+$schema->storage->debug(1);
+
+
+my $pref = $schema->resultset ('Artist')
+                     ->search ({ 'me.artistid' => $artist->id }, { prefetch => { cds => 'genre' } })
+                      ->next;
+
+is ($pref->cds->count, 3, 'Correct number of CDs prefetched');
+is ($pref->cds->search_related ('genre')->count, 1, 'Only one of the prefetched cds has a prefetched genre');
+
+
+is ($queries, 1, 'All happened within one query only');
+$schema->storage->debugcb($orig_cb);
+$schema->storage->debug(0);
+
+
+done_testing;