namespace Drupal\KernelTests\Core\Field;
-use Drupal\Component\Utility\Unicode;
use Drupal\entity_test\Entity\EntityTest;
use Drupal\entity_test\Entity\EntityTestMulRev;
use Drupal\field\Entity\FieldConfig;
$entity_type_id = 'entity_test_mulrev';
$this->installEntitySchema($entity_type_id);
- $this->fieldName = Unicode::strtolower($this->randomMachineName());
+ $this->fieldName = mb_strtolower($this->randomMachineName());
/** @var \Drupal\field\Entity\FieldStorageConfig $field_storage */
FieldStorageConfig::create([