private function startWorkers()
{
$wrapper = realpath(__DIR__ . '/../../../../bin/phpunit-wrapper');
for ($i = 1; $i <= $this->options->processes; $i++) {
$worker = new Worker();
if ($this->options->noTestTokens) {
$token = null;
} else {
$token = $i;
}
$worker->start($wrapper, $token);
$this->streams[] = $worker->stdout();
$this->workers[] = $worker;
}
}
