Symfony\Component\Console\Helper\DialogHelper::setInputStream PHP Method

    public function setInputStream($stream)
    {
        $this->inputStream = $stream;
    }

 /**
  * @param string $name
  */
 private function iExecuteCommandAndConfirm($name)
 {
     $this->dialog = $this->command->getHelper('dialog');
     $inputString = 'y' . PHP_EOL;
     $this->dialog->setInputStream($this->getInputStream($inputString));
     $this->tester->execute(['command' => $name]);
 }