Add a test covering the #11112 issue

tests/Doctrine/Tests/ORM/Functional/Ticket/GH11112Test.php

@@ -0,0 +1,79 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\Tests\ORM\Functional\Ticket;
+
+use Doctrine\Tests\Models\CMS\CmsUser;
+use Doctrine\Tests\OrmFunctionalTestCase;
+use Symfony\Component\Cache\Adapter\ArrayAdapter;
+
+class GH11112Test extends OrmFunctionalTestCase
+{
+    protected function setUp(): void
+    {
+        $this->useModelSet('cms');
+        self::$queryCache = new ArrayAdapter();
+
+        parent::setUp();
+    }
+
+    public function testSimpleQueryHasLimitAndOffsetApplied(): void
+    {
+        $platform = $this->_em->getConnection()->getDatabasePlatform();
+        $query = $this->_em->createQuery('SELECT u FROM ' . CmsUser::class . ' u');
+        $originalSql = $query->getSQL();
+
+        $query->setMaxResults(10);
+        $query->setFirstResult(20);
+        $sql10_20 = $query->getSQL();
+
+        $query->setMaxResults(30);
+        $query->setFirstResult(40);
+        $sql30_40 = $query->getSQL();
+
+        // The SQL is platform specific and may even be something with outer SELECTS being added. So,
+        // derive the expected value at runtime through the platform.
+        self::assertSame($platform->modifyLimitQuery($originalSql, 10, 20), $sql10_20);
+        self::assertSame($platform->modifyLimitQuery($originalSql, 30, 40), $sql30_40);
+
+        $cacheEntries = self::$queryCache->getValues();
+        self::assertCount(1, $cacheEntries);
+    }
+
+    public function testSubqueryLimitAndOffsetAreIgnored(): void
+    {
+        // Not sure what to do about this test. Basically, I want to make sure that
+        // firstResult/maxResult for subqueries are not relevant, they do not make it
+        // into the final query at all. That would give us the guarantee that the
+        // "sql finalizer" step is sufficient for the final, "outer" query and we
+        // do not need to run finalizers for the subqueries.
+
+        // This DQL/query makes no sense, it's just about creating a subquery in the first place
+        $queryBuilder = $this->_em->createQueryBuilder();
+        $queryBuilder
+            ->select('o')
+            ->from(CmsUser::class, 'o')
+            ->where($queryBuilder->expr()->exists(
+                $this->_em->createQueryBuilder()
+                            ->select('u')
+                            ->from(CmsUser::class, 'u')
+                            ->setFirstResult(10)
+                            ->setMaxResults(20)
+            ));
+
+        $query = $queryBuilder->getQuery();
+        $originalSql = $query->getSQL();
+
+        $clone = clone $query;
+        $clone->setFirstResult(24);
+        $clone->setMaxResults(42);
+        $limitedSql = $clone->getSQL();
+
+        $platform = $this->_em->getConnection()->getDatabasePlatform();
+
+        // The SQL is platform specific and may even be something with outer SELECTS being added. So,
+        // derive the expected value at runtime through the platform.
+        self::assertSame($platform->modifyLimitQuery($originalSql, 42, 24), $limitedSql);
+    }
+}