Remove readonly modifier from EntityManager

Author: nicolas-grekas

Diff for: src/EntityManager.php

@@ -63,27 +63,27 @@ class EntityManager implements EntityManagerInterface
     /**
      * The metadata factory, used to retrieve the ORM metadata of entity classes.
      */
-    private readonly ClassMetadataFactory $metadataFactory;
+    private ClassMetadataFactory $metadataFactory;
 
     /**
      * The UnitOfWork used to coordinate object-level transactions.
      */
-    private readonly UnitOfWork $unitOfWork;
+    private UnitOfWork $unitOfWork;
 
     /**
      * The event manager that is the central point of the event system.
      */
-    private readonly EventManager $eventManager;
+    private EventManager $eventManager;
 
     /**
      * The proxy factory used to create dynamic proxies.
      */
-    private readonly ProxyFactory $proxyFactory;
+    private ProxyFactory $proxyFactory;
 
     /**
      * The repository factory used to create dynamic repositories.
      */
-    private readonly RepositoryFactory $repositoryFactory;
+    private RepositoryFactory $repositoryFactory;
 
     /**
      * The expression builder instance used to generate query expressions.
@@ -112,8 +112,8 @@ class EntityManager implements EntityManagerInterface
      * @param Connection $conn The database connection used by the EntityManager.
      */
     public function __construct(
-        private readonly Connection $conn,
-        private readonly Configuration $config,
+        private Connection $conn,
+        private Configuration $config,
         EventManager|null $eventManager = null,
     ) {
         if (! $config->getMetadataDriverImpl()) {

Diff for: tests/Tests/ORM/EntityManagerTest.php

@@ -7,6 +7,7 @@
 use Doctrine\Common\EventManager;
 use Doctrine\DBAL\Connection;
 use Doctrine\ORM\Configuration;
+use Doctrine\ORM\EntityManager;
 use Doctrine\ORM\EntityManagerInterface;
 use Doctrine\ORM\Exception\EntityManagerClosed;
 use Doctrine\ORM\Mapping\ClassMetadataFactory;
@@ -21,7 +22,9 @@
 use Generator;
 use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\Attributes\Group;
+use ReflectionProperty;
 use stdClass;
+use Symfony\Component\VarExporter\LazyGhostTrait;
 use TypeError;
 
 class EntityManagerTest extends OrmTestCase
@@ -172,4 +175,36 @@ public function testWrapInTransactionReThrowsThrowables(): void
             self::assertFalse($this->entityManager->isOpen());
         }
     }
+
+    /** Resetting the EntityManager relies on lazy objects until https://github.com/doctrine/orm/issues/5933 is resolved */
+    public function testLazyGhostEntityManager(): void
+    {
+        $em = new class () extends EntityManager {
+            use LazyGhostTrait;
+
+            public function __construct()
+            {
+            }
+        };
+
+        $em = $em::createLazyGhost(static function ($em): void {
+            $r = new ReflectionProperty(EntityManager::class, 'unitOfWork');
+            $r->setValue($em, new class () extends UnitOfWork {
+                public function __construct()
+                {
+                }
+
+                public function clear(): void
+                {
+                }
+            });
+        });
+
+        $this->assertTrue($em->isOpen());
+        $em->close();
+        $this->assertFalse($em->isOpen());
+
+        $em->resetLazyObject();
+        $this->assertTrue($em->isOpen());
+    }
 }