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<?php

/**

 * Implements hook_cron_queue_info().

 */

function cron_queue_test_cron_queue_info() {

  $queues['cron_queue_test_exception'] = array(

    'worker callback' => 'cron_queue_test_exception',

  );

  $queues['cron_queue_test_callback'] = array(

    'worker callback' => array('CronQueueTestCallbackClass', 'foo'),

  );

  return $queues;

}

function cron_queue_test_exception($item) {

  throw new Exception('That is not supposed to happen.');

}

class CronQueueTestCallbackClass {

  static public function foo() {

    // Do nothing.

  }

}