namespace Drupal\Tests\datetime_range\Kernel;
-use Drupal\Component\Utility\Unicode;
use Drupal\Core\Entity\Entity\EntityViewDisplay;
use Drupal\Core\Language\Language;
use Drupal\datetime\Plugin\Field\FieldType\DateTimeItem;
// Add a datetime range field.
$this->fieldStorage = FieldStorageConfig::create([
- 'field_name' => Unicode::strtolower($this->randomMachineName()),
+ 'field_name' => mb_strtolower($this->randomMachineName()),
'entity_type' => 'entity_test',
'type' => 'daterange',
'settings' => ['datetime_type' => DateTimeItem::DATETIME_TYPE_DATE],