How to call a console command in PHPUnit from a test?

Question

symfony

It is necessary to test the operation of console commands in a symfony2 application.
That is, you need to call a command with a test, for example (php app/console router:debug ), then see the command response.
How to make the test run the command and then see the response that is displayed in the console.

Answer 1

Why test what the command outputs? Do you doubt the work of the Output class and helpers?
1. Make a subtle console command that uses the desired service.
2. Test the service.

Answer 2

Our tests checked applications through and through, starting from the creation of a request. That is, without the http part and commands.
Therefore, we simply did additional routing for commands and checked them like regular controller methods.

Answer 3

Found a solution:

use Asme\Command\UpdateCurrencyCommand;
use Symfony\Bundle\FrameworkBundle\Console\Application;
use Symfony\Bundle\FrameworkBundle\Test\KernelTestCase;
use Symfony\Component\Console\Tester\CommandTester;
class UpdateCurrencyCommandTest extends WebTestCase
{
public function testUpdateCurrency()
{
$kernel = $this->createKernel();
$kernel->boot();
$application = new Application($kernel);
$application->add(new UpdateCurrencyCommand());
$command = $application->find('command name');
$commandTester = new CommandTester($command);
$commandTester->execute(array('command' => $command->getName()));
//checking the response
$this->assertNotEquals('...', $commandTester->getDisplay());