UnitTest backport of "Failing test case for broken paginator case"

UnitTest backport of "Failing test case for broken paginator case" ( 192da14842 ).
The branch 2.x is very important because it's related to ZF2 doctrine module (see https://github.com/doctrine/DoctrineORMModule/blob/master/composer.json ) and specially this issue affects the use case of extending the ZF2 user entity defined in ZfcUser ( https://github.com/ZF-Commons/ZfcUser ).
This test is meant to show the need of the backport of e501137d1a

tests/Doctrine/Tests/ORM/Tools/Pagination/LimitSubqueryOutputWalkerTest.php

@@ -351,6 +351,25 @@ ORDER BY b.id DESC'
         );
     }
     
+    /**
+     * This tests ordering by property that has the 'declared' field.
+     */
+    public function testLimitSubqueryOrderByFieldFromMappedSuperclass()
+    {
+        $this->entityManager->getConnection()->setDatabasePlatform(new MySqlPlatform());
+
+        // now use the third one in query
+        $query = $this->entityManager->createQuery(
+            'SELECT b FROM Doctrine\Tests\ORM\Tools\Pagination\Banner b ORDER BY b.id DESC'
+        );
+        $query->setHint(Query::HINT_CUSTOM_OUTPUT_WALKER, 'Doctrine\ORM\Tools\Pagination\LimitSubqueryOutputWalker');
+
+        $this->assertEquals(
+            'SELECT DISTINCT id_0 FROM (SELECT b0_.id AS id_0, b0_.name AS name_1 FROM Banner b0_) dctrn_result ORDER BY id_0 DESC',
+            $query->getSQL()
+        );
+    }
+    
     /**
      * Tests order by on a subselect expression (mysql).
      */