/**
* @expectedException \Novuso\System\Exception\UnderflowException
*/
public function test_that_front_throws_exception_when_empty()
{
LinkedQueue::of('int')->front();
}
/**
* {@inheritdoc}
*/
public function clear()
{
if ($this->running) {
throw new Exception('Cannot clear processes while running');
}
$this->queue = LinkedQueue::of(Process::class);
$this->pids = [];
$this->procs = [];
}
