protected function execute($arguments = array(), $options = array())
 {
     // initialize the database connection
     $databaseManager = new sfDatabaseManager($this->configuration);
     $connection = $databaseManager->getDatabase($options['connection'] ? $options['connection'] : null)->getConnection();
     $criteria = new Criteria(SubscriberPeer::DATABASE_NAME);
     $criteria->add(SubscriberPeer::CREATED_AT, new DateTime(sprintf('-%d days', self::INACTIVE_DAYS)), Criteria::LESS_EQUAL);
     $subscribers = SubscriberPeer::retrievePendingActivation($criteria);
     if (!empty($subscribers)) {
         $this->logSection($this->name, sprintf('Removing %d subscribers.', count($subscribers)));
         /* @var $eachSubscriber Subscriber */
         foreach ($subscribers as $eachSubscriber) {
             if ($eachSubscriber->delete($connection)) {
                 $this->logSection($this->name, sprintf('Could not remove subscriber with id %d.', $eachSubscriber->getId()), 'ERROR');
             }
         }
     } else {
         $this->logSection($this->name, 'No subscribers found that require deletion.');
     }
 }
<?php

require_once dirname(__FILE__) . '/../bootstrap/task.php';
# load fixtures of this plugin
$propelData->loadData(sfConfig::get('sf_plugins_dir') . '/sfNewsletterPlugin/data/fixtures');
$limeTest = new lime_test(2, new lime_output_color());
$task = new RemoveInactiveSubscribersTask($dispatcher, $formatter);
$task->run(array(), array());
$logs = $logger->getLogEntries();
$limeTest->like($logs[0], '/No subscribers found that require deletion./', 'No subscribers to delete.');
$subscribers = SubscriberPeer::retrievePendingActivation();
$datetime = new DateTime(sprintf('-%d days', RemoveInactiveSubscribersTask::INACTIVE_DAYS + 2));
/* @var $eachSubscriber Subscriber */
foreach ($subscribers as $eachSubscriber) {
    $eachSubscriber->setCreatedAt($datetime)->save();
}
$task = new RemoveInactiveSubscribersTask($dispatcher, $formatter);
$task->run(array(), array());
$logs = $logger->getLogEntries();
$limeTest->like($logs[1], '/Removing 2 subscribers./', 'Deleted both subscribers.');