Command to test that all services within a Symfony project build successfully

TestServicesCommand.php

<?php

namespace AppBundle\Command;

use Symfony\Bundle\FrameworkBundle\Command\ContainerAwareCommand;
use Symfony\Component\Config\FileLocator;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\Loader\XmlFileLoader;

class TestServicesCommand extends ContainerAwareCommand
{
    /**
     * @var ContainerBuilder|null
     */
    private $containerBuilder;

    public function configure()
    {
        $this
            ->setName('test:services')
            ->addArgument('prefix', InputArgument::OPTIONAL, 'Check only services with this prefix')
        ;
    }

    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $container = $this->getContainer();
        $containerBuilder = $this->getContainerBuilder();

        $ids = $containerBuilder->getServiceIds();

        if (null !== $prefix = $input->getArgument('prefix')) {
            $ids = array_filter($ids, function($id) use ($prefix) {
                return 0 === strpos($id, $prefix);
            });
        }

        // We get - and then build - each service from tje container

        foreach ($ids as $id) {
            try {
                $container->get($id);

                $output->writeln(sprintf('<info>Able to build %s service!</info>', $id));
            } catch (\Exception $e) {
                $output->writeln(sprintf('<error>Error while building service %s, got "%s"', $id, $e->getMessage()));
            }
        }
    }

    /**
     * Loads the ContainerBuilder from the cache.
     * From Symfony container:debug command
     *
     * @return ContainerBuilder
     *
     * @throws \LogicException
     */
    protected function getContainerBuilder()
    {
        if ($this->containerBuilder) {
            return $this->containerBuilder;
        }

        if (!$this->getApplication()->getKernel()->isDebug()) {
            throw new \LogicException(sprintf('Debug information about the container is only available in debug mode.'));
        }

        if (!is_file($cachedFile = $this->getContainer()->getParameter('debug.container.dump'))) {
            throw new \LogicException(sprintf('Debug information about the container could not be found. Please clear the cache and try again.'));
        }

        $container = new ContainerBuilder();

        $loader = new XmlFileLoader($container, new FileLocator());
        $loader->load($cachedFile);

        return $this->containerBuilder = $container;
    }
}