public function testReload()
 {
     $pool = new \Jenner\SimpleFork\ParallelPool(new ParallelPoolTestRunnable(), 10);
     $pool->start();
     $this->assertEquals(10, $pool->aliveCount());
     $old_processes = $pool->getProcesses();
     $pool->reload();
     $new_processes = $pool->getProcesses();
     foreach ($old_processes as $old_process) {
         foreach ($new_processes as $new_process) {
             $this->assertTrue($old_process->getPid() != $new_process->getPid());
         }
     }
     $pool->shutdown();
 }