ParaTest\Runners\PHPUnit\Runner::fillRunQueue PHP Method

    private function fillRunQueue()
    {
        $opts = $this->options;
        while (sizeof($this->pending) && sizeof($this->running) < $opts->processes) {
            $tokenData = $this->getNextAvailableToken();
            if ($tokenData !== false) {
                $this->acquireToken($tokenData['token']);
                $env = array('TEST_TOKEN' => $tokenData['token'], 'UNIQUE_TEST_TOKEN' => $tokenData['unique']) + Habitat::getAll();
                $this->running[$tokenData['token']] = array_shift($this->pending)->run($opts->phpunit, $opts->filtered, $env);
            }
        }
    }