node_test_exception.module

<?php


/**
 * @file
 * A module implementing node related hooks to test API interaction.
 */
use Drupal\node\NodeInterface;

/**
 * Implements hook_ENTITY_TYPE_insert() for node entities.
 */
function node_test_exception_node_insert(NodeInterface $node) {
    if ($node->getTitle() == 'testing_transaction_exception') {
        throw new Exception('Test exception for rollback.');
    }
}