From: Dagfinn Ilmari Mannsåker <ilmari@ilmari.org>
Date: Sun, 20 May 2007 00:10:20 +0000 (+0000)
Subject: add tests for nested prefetch with many_to_many and chained search_related
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=d54c409fd93e11d0d1714a17d75fc699a13a2418;p=dbsrgits%2FDBIx-Class-Historic.git

add tests for nested prefetch with many_to_many and chained search_related
---

diff --git a/t/76joins.t b/t/76joins.t
index 57a9ffc..2f473a9 100644
--- a/t/76joins.t
+++ b/t/76joins.t
@@ -16,7 +16,7 @@ BEGIN {
     eval "use DBD::SQLite";
     plan $@
         ? ( skip_all => 'needs DBD::SQLite for testing' )
-        : ( tests => 53 );
+        : ( tests => 62 );
 }
 
 # figure out if we've got a version of sqlite that is older than 3.2.6, in
@@ -222,12 +222,48 @@ is($queries, 1, 'nested prefetch ran exactly 1 select statement (excluding colum
 
 $queries = 0;
 
+is($tag->search_related('cd')->search_related('artist')->first->name,
+   'Caterwauler McCrae',
+   'chained belongs_to->belongs_to search_related ok');
+
+TODO: {
+  local $TODO = 'use prefetched values for nested search_related';
+
+  is($queries, 0, 'chained search_related after belontgs_to->belongs_to prefetch ran no queries');
+}
+
+$queries = 0;
+
 $cd = $schema->resultset('CD')->find(1, { prefetch => 'artist' });
 
 is($cd->{_inflated_column}{artist}->name, 'Caterwauler McCrae', 'artist prefetched correctly on find');
 
 is($queries, 1, 'find with prefetch ran exactly 1 select statement (excluding column_info)');
 
+$queries = 0;
+
+$cd = $schema->resultset('CD')->find(1, { prefetch => { cd_to_producer => 'producer' } });
+
+is($cd->producers->first->name, 'Matt S Trout', 'many_to_many accessor ok');
+
+TODO: {
+  local $TODO = 'use prefetched values for many_to_many accessor';
+
+  is($queries, 1, 'many_to_many accessor with nested prefetch ran exactly 1 query');
+}
+
+$queries = 0;
+
+my $producers = $cd->search_related('cd_to_producer')->search_related('producer');
+
+is($producers->first->name, 'Matt S Trout', 'chained many_to_many search_related ok');
+
+TODO: {
+  local $TODO = 'use prefetched values for search_related';
+
+  is($queries, 0, 'chained search_related after many_to_many prefetch ran no queries');
+}
+
 $schema->storage->debug($orig_debug);
 $schema->storage->debugobj->callback(undef);
 
@@ -405,8 +441,28 @@ sub make_hash_struc {
     return $struc;
 }
 
+$queries = 0;
+$schema->storage->debugcb(sub { $queries++ });
+$schema->storage->debug(1);
+
 my $prefetch_result = make_hash_struc($art_rs_pr);
+
+is($queries, 1, 'nested prefetch across has_many->has_many ran exactly 1 query');
+
 my $nonpre_result   = make_hash_struc($art_rs);
 
 is_deeply( $prefetch_result, $nonpre_result,
     'Compare 2 level prefetch result to non-prefetch result' );
+
+$queries = 0;
+
+is($art_rs_pr->search_related('cds')->search_related('tracks')->first->title,
+   'Fowlin',
+   'chained has_many->has_many search_related ok'
+  );
+
+TODO: {
+  local $TODO ='use prefetched values for chained search_related';
+
+  is($queries, 0, 'chained search_related after has_many->has_many prefetch ran no queries');
+}