namespace Drupal\Tests\field\Functional;
-use Drupal\Component\Utility\Unicode;
use Drupal\field\Entity\FieldStorageConfig;
use Drupal\field\Entity\FieldConfig;
use Drupal\language\Entity\ConfigurableLanguage;
protected function setUp() {
parent::setUp();
- $this->fieldName = Unicode::strtolower($this->randomMachineName() . '_field_name');
+ $this->fieldName = mb_strtolower($this->randomMachineName() . '_field_name');
$field_storage = [
'field_name' => $this->fieldName,