Symfony\Component\Console\Command\Command::setHelperSet PHP Method

    public function setHelperSet(HelperSet $helperSet)
    {
        $this->helperSet = $helperSet;
    }

 public function simulateHelperSet(Command $command)
 {
     $this->dialog = $this->getMock("Symfony\\Component\\Console\\Helper\\DialogHelper");
     $helpers = array('dialog' => $this->dialog);
     $helperSet = new HelperSet($helpers);
     $command->setHelperSet($helperSet);
 }