public function testDeadWorkerCleanUpDoesNotCleanUnknownWorkers()
 {
     // Register a bad worker on this machine
     $worker = new Worker('jobs');
     $workerId = explode(':', $worker);
     $worker->setId($workerId[0] . ':1:jobs');
     $worker->registerWorker();
     // Register some other false workers
     $worker = new Worker('jobs');
     $worker->setId('my.other.host:1:jobs');
     $worker->registerWorker();
     $this->assertEquals(2, count(Worker::all()));
     $worker->pruneDeadWorkers();
     // my.other.host should be left
     $workers = Worker::all();
     $this->assertEquals(1, count($workers));
     $this->assertEquals((string) $worker, (string) $workers[0]);
 }