public function test_abbrev()
 {
     $words = array('start', 'stop', 'queue', 'quit');
     $result = pakeTask::abbrev($words);
     $expected = array('st' => array('start', 'stop'), 's' => array('start', 'stop'), 'sta' => array('start'), 'star' => array('start'), 'start' => array('start'), 'sto' => array('stop'), 'stop' => array('stop'), 'qu' => array('queue', 'quit'), 'q' => array('queue', 'quit'), 'que' => array('queue'), 'queu' => array('queue'), 'queue' => array('queue'), 'qui' => array('quit'), 'quit' => array('quit'));
     $this->assertEqual($expected, $result);
 }