TestObjectItemTest.php

<?php

namespace Drupal\Tests\field\Kernel;

use Drupal\entity_test\Entity\EntityTest;
use Drupal\field\Entity\FieldConfig;
use Drupal\field\Entity\FieldStorageConfig;

/**
 * Tests the serialization of an object.
 *
 * @group field
 */
class TestObjectItemTest extends FieldKernelTestBase {
    
    /**
     * Modules to enable.
     *
     * @var array
     */
    public static $modules = [
        'field_test',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() {
        parent::setUp();
        // Create a 'test_field' field and storage for validation.
        FieldStorageConfig::create([
            'field_name' => 'field_test',
            'entity_type' => 'entity_test',
            'type' => 'test_object_field',
        ])->save();
        FieldConfig::create([
            'entity_type' => 'entity_test',
            'field_name' => 'field_test',
            'bundle' => 'entity_test',
        ])->save();
    }
    
    /**
     * Tests the serialization of a field type that has an object.
     */
    public function testTestObjectItem() {
        $object = new \stdClass();
        $object->foo = 'bar';
        $entity = EntityTest::create();
        $entity->field_test->value = $object;
        $entity->save();
        // Verify that the entity has been created properly.
        $id = $entity->id();
        $entity = EntityTest::load($id);
        $this->assertInstanceOf(\stdClass::class, $entity->field_test->value);
        $this->assertEquals($object, $entity->field_test->value);
    }

}