(Try to) add a reproducer for #10880

tests/Doctrine/Tests/ORM/Functional/Ticket/GH10880Test.php

@@ -0,0 +1,131 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\Tests\ORM\Functional\Ticket;
+
+use Doctrine\ORM\Mapping as ORM;
+use Doctrine\Tests\OrmFunctionalTestCase;
+
+class GH10880Test extends OrmFunctionalTestCase
+{
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $this->setUpEntitySchema([
+            GH10880Process::class,
+            GH10880ProcessOwner::class,
+            GH10880ProcessStage::class,
+        ]);
+    }
+
+    public function testProcessShouldBeUpdated(): void
+    {
+        $process = new GH10880Process();
+
+        $stageA                = new GH10880ProcessStage();
+        $stageA->process       = $process;
+        $process->currentStage = $stageA;
+
+        $stageB          = new GH10880ProcessStage();
+        $stageB->process = $process;
+
+        $owner          = new GH10880ProcessOwner();
+        $owner->process = $process;
+        $process->owner = $owner;
+
+        $this->_em->persist($process);
+        $this->_em->persist($stageA);
+        $this->_em->persist($stageB);
+        $this->_em->persist($owner);
+        $this->_em->flush();
+        $this->_em->clear();
+
+        $ownerLoaded   = $this->_em->find(GH10880ProcessOwner::class, $owner->id);
+        $processLoaded = $ownerLoaded->process;
+
+        $stageBLoaded                = $this->_em->find(GH10880ProcessStage::class, $stageB->id);
+        $processLoaded->currentStage = $stageBLoaded;
+
+        $queryLog = $this->getQueryLog();
+        $queryLog->reset()->enable();
+        $this->_em->flush();
+
+        self::assertCount(1, $queryLog->queries);
+        self::assertSame('UPDATE GH10880Process SET currentStage_id = ? WHERE id = ?', $queryLog->queries[0]['sql']);
+    }
+}
+
+/**
+ * @ORM\Entity
+ */
+class GH10880ProcessOwner
+{
+    /**
+     * @ORM\Id
+     * @ORM\GeneratedValue
+     * @ORM\Column(type="integer")
+     *
+     * @var int
+     */
+    public $id = null;
+
+    /**
+     * @ORM\ManyToOne(targetEntity="GH10880Process")
+     *
+     * @var GH10880Process
+     */
+    public $process;
+}
+
+/**
+ * @ORM\Entity
+ */
+class GH10880Process
+{
+    /**
+     * @ORM\Id
+     * @ORM\GeneratedValue
+     * @ORM\Column(type="integer")
+     *
+     * @var int
+     */
+    public $id = null;
+
+    /**
+     * @ORM\OneToOne(targetEntity="GH10880ProcessOwner")
+     *
+     * @var GH10880ProcessOwner
+     */
+    public $owner;
+
+    /**
+     * @ORM\OneToOne(targetEntity="GH10880ProcessStage")
+     *
+     * @var GH10880ProcessStage
+     */
+    public $currentStage;
+}
+
+/**
+ * @ORM\Entity
+ */
+class GH10880ProcessStage
+{
+    /**
+     * @ORM\Id
+     * @ORM\GeneratedValue
+     * @ORM\Column(type="integer")
+     *
+     * @var int
+     */
+    public $id = null;
+
+    /**
+     * @ORM\ManyToOne(targetEntity="GH10880Process")
+     *
+     * @var GH10880Process
+     */
+    public $process;
+}