EntityDuplicateTest.php

<?php

namespace Drupal\KernelTests\Core\Entity;

use Drupal\entity_test\Entity\EntityTestRev;

/**
 * Test entity duplication.
 *
 * @group Entity
 */
class EntityDuplicateTest extends EntityKernelTestBase {
    
    /**
     * @var \Drupal\Core\Entity\ContentEntityStorageInterface
     */
    protected $entityTestRevStorage;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() {
        parent::setUp();
        $this->installEntitySchema('entity_test_rev');
        $this->entityTestRevStorage = $this->container
            ->get('entity_type.manager')
            ->getStorage('entity_test_rev');
    }
    
    /**
     * Test duplicating a non-default revision.
     */
    public function testDuplicateNonDefaultRevision() {
        $entity = EntityTestRev::create([
            'name' => 'First Revision',
        ]);
        $entity->save();
        $first_revision_id = $entity->getRevisionId();
        $entity->setNewRevision(TRUE);
        $entity->name = 'Second Revision';
        $entity->save();
        $duplicate_first_revision = $this->entityTestRevStorage
            ->loadRevision($first_revision_id)
            ->createDuplicate();
        $this->assertTrue($duplicate_first_revision->isDefaultRevision(), 'Duplicating a non-default revision creates a default revision.');
        $this->assertEquals($duplicate_first_revision->label(), 'First Revision');
        $duplicate_first_revision->save();
        $duplicate_first_revision->name = 'Updated name';
        $duplicate_first_revision->save();
        $this->entityTestRevStorage
            ->resetCache();
        $duplicate_first_revision = EntityTestRev::load($duplicate_first_revision->id());
        $this->assertEquals('Updated name', $duplicate_first_revision->label());
    }

}