Failing test: Duplicate private fields not detected

Author: mpdude

tests/Doctrine/Tests/ORM/Functional/Ticket/GH10450Test.php

@@ -0,0 +1,62 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\Tests\ORM\Functional\Ticket;
+
+use Doctrine\ORM\Mapping as ORM;
+use Doctrine\ORM\Mapping\MappingException;
+use Doctrine\Tests\OrmTestCase;
+
+class GH10450Test extends OrmTestCase
+{
+    public function testDuplicatePrivateFieldsShallBeRejected(): void
+    {
+        $em = $this->getTestEntityManager();
+        $classes = [GH10450BaseClass::class, GH10450ChildClass::class];
+
+        $this->expectException(MappingException::class);
+
+        foreach ($classes as $class) {
+            $cm = $em->getClassMetadata($class);
+        }
+    }
+}
+
+/**
+ * @ORM\Entity
+ * @ORM\InheritanceType("JOINED")
+ * @ORM\DiscriminatorMap({ "base": "GH10450BaseClass", "child": "GH10450ChildClass" })
+ * @ORM\DiscriminatorColumn(name="type")
+ */
+class GH10450BaseClass
+{
+    /**
+     * @ORM\Column(type="integer")
+     * @ORM\Id
+     * @ORM\GeneratedValue
+     *
+     * @var int
+     */
+    private $id;
+
+    /**
+     * @ORM\Column(type="text", name="base")
+     *
+     * @var string
+     */
+    private $field;
+}
+
+/**
+ * @ORM\Entity
+ */
+class GH10450ChildClass extends GH10450BaseClass
+{
+    /**
+     * @ORM\Column(type="text", name="child")
+     *
+     * @var string
+     */
+    private $field;
+}