Address deprecations from doctrine/dbal (#12098)

- Non-standard flags are deprecated.
- Index::getColumns() is deprecated.

Author: greg0ire

tests/Tests/ORM/Functional/Ticket/GH11982Test.php

@@ -5,10 +5,12 @@
 namespace Doctrine\Tests\ORM\Functional\Ticket;
 
 use Doctrine\DBAL\Platforms\PostgreSQLPlatform;
+use Doctrine\DBAL\Schema\Index;
 use Doctrine\ORM\Mapping as ORM;
 use Doctrine\Tests\OrmFunctionalTestCase;
 use PHPUnit\Framework\Attributes\Group;
 
+use function method_exists;
 use function reset;
 
 class GH11982Test extends OrmFunctionalTestCase
@@ -29,6 +31,38 @@ public function testSchema(): void
             self::markTestSkipped('This test does not work on psql.');
         }
 
+        if (! method_exists(Index::class, 'getIndexedColumns')) {
+            self::markTestSkipped('This test requires doctrine/dbal >=4.3');
+        }
+
+        $indexes = $this->createSchemaManager()
+            ->introspectTable('GH11982ColumnIndex')
+            ->getIndexes();
+
+        self::assertCount(3, $indexes); // primary + 2 custom indexes
+        self::assertArrayHasKey('class_idx', $indexes);
+
+        unset($indexes['primary']);
+        unset($indexes['class_idx']);
+        $unnamedIndexColumns = reset($indexes)->getIndexedColumns();
+        self::assertCount(1, $unnamedIndexColumns);
+        self::assertEquals(
+            'indexTrue',
+            $unnamedIndexColumns[0]->getColumnName()->toString(),
+        );
+    }
+
+    #[Group('GH-11982')]
+    public function testSchemaLegacyDbal(): void
+    {
+        if ($this->_em->getConnection()->getDatabasePlatform() instanceof PostgreSQLPlatform) {
+            self::markTestSkipped('This test does not work on psql.');
+        }
+
+        if (method_exists(Index::class, 'getIndexedColumns')) {
+            self::markTestSkipped('This test requires doctrine/dbal <4.3');
+        }
+
         $indexes = $this->createSchemaManager()
             ->introspectTable('GH11982ColumnIndex')
             ->getIndexes();
@@ -48,7 +82,7 @@ public function testSchema(): void
 #[ORM\Index(
     name: 'class_idx',
     fields: ['classIndex'],
-    flags: ['test'],
+    flags: ['fulltext'],
     options: ['test'],
 )]
 class GH11982ColumnIndex