Cherry-pick (and slightly simplify) tests from doctrine#9377

Co-authored-by: Josef Šupka <[email protected]>

tests/Doctrine/Tests/ORM/Functional/Ticket/GH9376Test.php

@@ -0,0 +1,133 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\Tests\ORM\Functional\Ticket;
+
+use Doctrine\ORM\Mapping as ORM;
+use Doctrine\ORM\Mapping\Column;
+use Doctrine\ORM\Mapping\Entity;
+use Doctrine\ORM\Mapping\GeneratedValue;
+use Doctrine\ORM\Mapping\Id;
+use Doctrine\Tests\OrmFunctionalTestCase;
+
+class GH9376Test extends OrmFunctionalTestCase
+{
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $this->_schemaTool->createSchema([
+            $this->_em->getClassMetadata(GH9376GiftVariant::class),
+            $this->_em->getClassMetadata(GH9376Product::class),
+            $this->_em->getClassMetadata(GH9376Gift::class),
+        ]);
+    }
+
+    protected function tearDown(): void
+    {
+        $this->_schemaTool->dropSchema([
+            $this->_em->getClassMetadata(GH9376GiftVariant::class),
+            $this->_em->getClassMetadata(GH9376Product::class),
+            $this->_em->getClassMetadata(GH9376Gift::class),
+        ]);
+
+        parent::tearDown();
+    }
+
+    public function testRemoveCircularRelatedEntities(): void
+    {
+        if (! $this->_em->getConnection()->getDatabasePlatform()->supportsForeignKeyConstraints()) {
+            self::markTestSkipped('Platform does not support foreign keys.');
+        }
+
+        $product     = new GH9376Product();
+        $gift        = new GH9376Gift($product);
+        $giftVariant = new GH9376GiftVariant($gift);
+
+        $this->_em->persist($product);
+        $this->_em->persist($gift);
+        $this->_em->persist($giftVariant);
+        $this->_em->flush();
+        $this->_em->clear();
+
+        $persistedGiftVariant = $this->_em->find(GH9376GiftVariant::class, 1);
+        $this->_em->remove($persistedGiftVariant);
+
+        $persistedGift = $this->_em->find(GH9376Gift::class, 1);
+        $this->_em->remove($persistedGift);
+
+        $this->_em->flush();
+        $this->_em->clear();
+
+        self::assertEmpty($this->_em->getRepository(GH9376Gift::class)->findAll());
+        self::assertEmpty($this->_em->getRepository(GH9376GiftVariant::class)->findAll());
+    }
+}
+
+/**
+ * @Entity
+ */
+class GH9376GiftVariant
+{
+    /**
+     * @var int
+     * @Id
+     * @Column(type="integer")
+     * @GeneratedValue
+     */
+    public $id;
+
+    /**
+     * @ORM\ManyToOne(targetEntity=GH9376Gift::class)
+     * @ORM\JoinColumn(nullable=false)
+     *
+     * @var GH9376Gift
+     */
+    public $gift;
+
+    public function __construct(GH9376Gift $gift)
+    {
+        $this->gift = $gift;
+    }
+}
+
+/**
+ * @Entity
+ */
+
+class GH9376Product
+{
+    /**
+     * @var int
+     * @Id @Column(type="integer")
+     * @GeneratedValue
+     */
+    public $id;
+}
+
+/**
+ * @Entity
+ */
+class GH9376Gift
+{
+    /**
+     * @var int
+     * @Id @Column(type="integer")
+     * @GeneratedValue
+     */
+    public $id;
+
+    /**
+     * @ORM\ManyToOne(targetEntity=GH9376Product::class)
+     * @ORM\JoinColumn(nullable=false)
+     *
+     * @var GH9376Product
+     */
+    public $product;
+
+    public function __construct(GH9376Product $product)
+    {
+        $this->product = $product;
+    }
+}