The documentation is missing an example how to test a command that uses askConfirmation() or ask().

/** @var \Symfony\Component\Console\Helper\DialogHelper $dialog */$dialog =$this->getHelperSet()->get('dialog');if (!$dialog->askConfirmation(..)) {// Do something.}

As this is a really useful feature and not to hard document (I guess), I suggest adding this for Symfony Docs Hack Day.