CommandTest.php

<?php

use Symfony\Bundle\FrameworkBundle\Test\WebTestCase;
use Symfony\Bundle\FrameworkBundle\Console\Application;
use ImportCommand;

class ImportCommandTest extends WebTestCase
{
  public function setUp()
    {
        $this->client = self::createClient();
        $application = new Application($this->client->getKernel());
        $application->add(new ImportCommand());
        
        $profiler = $this->client->getKernel()->getContainer()->get('profiler');
        $mailer = $profiler->get('swiftmailer');
    }
}