/**
  * Checks if particular message is in the log with given delta.
  *
  * @param string $message
  *   Log message.
  * @param int $log_item_index
  *   Log item's index in log entries stack.
  */
 protected function assertRulesLogEntryExists($message, $log_item_index = 0)
 {
     // Test that the action has logged something.
     $logs = $this->logger->getLogs();
     $this->assertEqual($logs[$log_item_index]['message'], $message);
 }