public function testWorkerFailsUncompletedJobsOnExit()
{
$worker = new Worker('jobs');
$worker->registerWorker();
$payload = array('class' => 'Test_Job');
$job = new Job('jobs', $payload);
$worker->workingOn($job);
$worker->unregisterWorker();
$this->assertEquals(1, Stat::get('failed'));
}