Test quoted qualified name

The current behavior is that a quote in the table name should result in
the name being considered "quoted" and be passed to DBAL's
quoteIdentifier() method, which should quote each identifier
individually (so the dot is still interpreted as a schema separator).

tests/Tests/ORM/Functional/Mapping/PostgreSqlDefaultQuoteStrategyTest.php

@@ -0,0 +1,54 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\Tests\ORM\Functional\Mapping;
+
+use Doctrine\DBAL\Platforms\PostgreSQLPlatform;
+use Doctrine\ORM\Mapping as ORM;
+use Doctrine\ORM\Mapping\Driver\AttributeDriver;
+use Doctrine\ORM\Tools\SchemaTool;
+use Doctrine\Tests\OrmFunctionalTestCase;
+
+class PostgreSqlDefaultQuoteStrategyTest extends OrmFunctionalTestCase
+{
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $platform = $this->_em->getConnection()->getDatabasePlatform();
+        if (! $platform instanceof PostgreSQLPlatform) {
+            self::markTestSkipped(self::class . ' requires the use of postgresql.');
+        }
+
+        $this->_em         = $this->getEntityManager(
+            null,
+            new AttributeDriver([__DIR__], true)
+        );
+        $this->_schemaTool = new SchemaTool($this->_em);
+    }
+
+    public function testQuotingStillAllowsInterpretingDotAsSchemaSeparator(): void
+    {
+        $this->createSchemaForModels(Product::class);
+        $schemaManager = $this->createSchemaManager();
+        self::assertContains(
+            'Inventory',
+            $schemaManager->listSchemaNames(),
+            '"Inventory" should be interpreted as a schema name, even when quoted.'
+        );
+        self::assertContains(
+            'Products',
+            $schemaManager->listTableNames(),
+            '"Products" should be interpreted as a table name, even when quoted.'
+        );
+    }
+}
+
+#[ORM\Entity]
+#[ORM\Table(name: '"Inventory.Products"')] // Using quotes to make sure capitalization is preserved
+class Product
+{
+    #[ORM\Id]
+    public ?int $id = null;
+}