Rewrite GenericSubQ from SQLA::L to be actually useful

[dbsrgits/DBIx-Class.git] / t / sqlahacks / limit_dialects / generic_subq.t

diff --git a/t/sqlahacks/limit_dialects/generic_subq.t b/t/sqlahacks/limit_dialects/generic_subq.t
new file mode 100644 (file)
index 0000000..7f924d1
--- /dev/null
+++ b/t/sqlahacks/limit_dialects/generic_subq.t
@@ -0,0 +1,125 @@
+use strict;
+use warnings;
+
+use Test::More;
+use lib qw(t/lib);
+use DBICTest;
+use DBIC::SqlMakerTest;
+
+my $schema = DBICTest->init_schema;
+
+$schema->storage->_sql_maker->limit_dialect ('GenericSubQ');
+
+my $rs = $schema->resultset ('BooksInLibrary')->search ({}, {
+  '+columns' => [{ owner_name => 'owner.name' }],
+  join => 'owner',
+  rows => 2,
+  order_by => 'me.title',
+});
+
+is_same_sql_bind(
+  $rs->as_query,
+  '(
+    SELECT  id, source, owner, title, price,
+            owner_name
+      FROM (
+        SELECT  me.id, me.source, me.owner, me.title, me.price,
+                owner.name AS owner_name
+          FROM books me
+          JOIN owners owner ON owner.id = me.owner
+        WHERE ( source = ? )
+        ORDER BY me.title
+      ) me
+    WHERE
+      (
+        SELECT COUNT(*)
+          FROM books rownum__emulation
+        WHERE rownum__emulation.title < me.title
+      ) < 2
+  )',
+  [  [ 'source', 'Library' ] ],
+);
+
+is_deeply (
+  [ $rs->get_column ('title')->all ],
+  ['Best Recipe Cookbook', 'Dynamical Systems'],
+  'Correct columns selected with rows',
+);
+
+$schema->storage->_sql_maker->quote_char ('"');
+$schema->storage->_sql_maker->name_sep ('.');
+
+$rs = $schema->resultset ('BooksInLibrary')->search ({}, {
+  order_by => { -desc => 'title' },
+  '+select' => ['owner.name'],
+  '+as' => ['owner.name'],
+  join => 'owner',
+  rows => 3,
+  offset => 1,
+});
+
+is_same_sql_bind(
+  $rs->as_query,
+  '(
+    SELECT  "id", "source", "owner", "title", "price",
+            "owner__name"
+      FROM (
+        SELECT  "me"."id", "me"."source", "me"."owner", "me"."title", "me"."price",
+                "owner"."name" AS "owner__name"
+          FROM "books" "me"
+          JOIN "owners" "owner" ON "owner"."id" = "me"."owner"
+        WHERE ( "source" = ? )
+        ORDER BY "title" DESC
+      ) "me"
+    WHERE
+      (
+        SELECT COUNT(*)
+          FROM "books" "rownum__emulation"
+        WHERE "rownum__emulation"."title" > "me"."title"
+      ) BETWEEN 1 AND 3
+  )',
+  [ [ 'source', 'Library' ] ],
+);
+
+is_deeply (
+  [ $rs->get_column ('title')->all ],
+  [ 'Dynamical Systems', 'Best Recipe Cookbook' ],
+  'Correct columns selected with rows',
+);
+
+$rs = $schema->resultset ('BooksInLibrary')->search ({}, {
+  order_by => 'title',
+  'select' => ['owner.name'],
+  'as' => ['owner_name'],
+  join => 'owner',
+  offset => 1,
+});
+
+is_same_sql_bind(
+  $rs->as_query,
+  '(
+    SELECT "owner_name"
+      FROM (
+        SELECT "owner"."name" AS "owner_name", "title"
+          FROM "books" "me"
+          JOIN "owners" "owner" ON "owner"."id" = "me"."owner"
+        WHERE ( "source" = ? )
+        ORDER BY "title"
+      ) "me"
+    WHERE
+      (
+        SELECT COUNT(*)
+          FROM "books" "rownum__emulation"
+        WHERE "rownum__emulation"."title" < "me"."title"
+      ) BETWEEN 1 AND 4294967295
+  )',
+  [ [ 'source', 'Library' ] ],
+);
+
+is_deeply (
+  [ $rs->get_column ('owner_name')->all ],
+  [ ('Newton') x 2 ],
+  'Correct columns selected with rows',
+);
+
+done_testing;