You really want to test your cron right? well all you have to do is open periodic/cron.php and after:

    if (checkCronJob($aRow['time']))
        runJob($aRow);
}

add;

mail('youremail@gmail.com', 'TEst Cron', 'test cron man lets see' );

 

dont forget to change youremail with your real emil address ok??  save it and wait one minute/....if it works you wil get an email...if not your cron line is in need of updating

have fun