NodeTestExceptionHooks.php

<?php

declare (strict_types=1);
namespace Drupal\node_test_exception\Hook;

use Drupal\node\NodeInterface;
use Drupal\Core\Hook\Attribute\Hook;

/**
 * Hook implementations for node_test_exception.
 */
class NodeTestExceptionHooks {
  
  /**
   * Implements hook_ENTITY_TYPE_insert() for node entities.
   */
  public function nodeInsert(NodeInterface $node) : void {
    if ($node->getTitle() == 'testing_transaction_exception') {
      throw new \Exception('Test exception for rollback.');
    }
  }

}