File: DDC1383Test.php

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<?php

declare(strict_types=1);

namespace Doctrine\Tests\ORM\Functional\Ticket;

use Doctrine\ORM\Mapping\Column;
use Doctrine\ORM\Mapping\DiscriminatorColumn;
use Doctrine\ORM\Mapping\DiscriminatorMap;
use Doctrine\ORM\Mapping\Entity;
use Doctrine\ORM\Mapping\GeneratedValue;
use Doctrine\ORM\Mapping\Id;
use Doctrine\ORM\Mapping\InheritanceType;
use Doctrine\ORM\Mapping\ManyToOne;
use Doctrine\Tests\OrmFunctionalTestCase;

use function get_debug_type;

/** @group DDC-1383 */
class DDC1383Test extends OrmFunctionalTestCase
{
    protected function setUp(): void
    {
        parent::setUp();

        $this->createSchemaForModels(
            DDC1383AbstractEntity::class,
            DDC1383Entity::class
        );
    }

    public function testFailingCase(): void
    {
        $parent = new DDC1383Entity();
        $child  = new DDC1383Entity();

        $child->setReference($parent);

        $this->_em->persist($parent);
        $this->_em->persist($child);

        $id = $child->getId();

        $this->_em->flush();
        $this->_em->clear();

        // Try merging the parent entity
        $child  = $this->_em->merge($child);
        $parent = $child->getReference();

        // Parent is not instance of the abstract class
        self::assertTrue(
            $parent instanceof DDC1383AbstractEntity,
            'Entity class is ' . get_debug_type($parent) . ', "DDC1383AbstractEntity" was expected'
        );

        // Parent is NOT instance of entity
        self::assertTrue(
            $parent instanceof DDC1383Entity,
            'Entity class is ' . get_debug_type($parent) . ', "DDC1383Entity" was expected'
        );
    }
}

/**
 * @Entity
 * @InheritanceType("JOINED")
 * @DiscriminatorColumn(name="discr", type="integer")
 * @DiscriminatorMap({1 = "DDC1383Entity"})
 */
abstract class DDC1383AbstractEntity
{
    /**
     * @var int
     * @Id
     * @Column(type="integer")
     * @GeneratedValue
     */
    protected $id;

    public function getId(): ?int
    {
        return $this->id;
    }

    public function setId(int $id): void
    {
        $this->id = $id;
    }
}

/** @Entity */
class DDC1383Entity extends DDC1383AbstractEntity
{
    /**
     * @var DDC1383AbstractEntity
     * @ManyToOne(targetEntity="DDC1383AbstractEntity")
     */
    protected $reference;

    public function getReference(): DDC1383AbstractEntity
    {
        return $this->reference;
    }

    public function setReference(DDC1383AbstractEntity $reference): void
    {
        $this->reference = $reference;
    }
}