Symfony Test Case with Conatiner

gistfile1.txt

<?php

namespace Tests;

use Doctrine\ORM\EntityManagerInterface;
use Symfony\Component\DependencyInjection\ResettableContainerInterface;
use Symfony\Component\Form\PreloadedExtension;
use Symfony\Component\Form\Test\TypeTestCase;
use Symfony\Bridge\Doctrine\Form\Type\EntityType;

abstract class AbstractTypeTestCase extends TypeTestCase
{
    /**
     * @var \Kernel
     */
    protected static $kernel;
    protected static $container;

    protected function get(string $serviceId)
    {
        return $this->getContainer()->get($serviceId);
    }

    protected function getContainer()
    {
        if (!isset(self::$kernel)) {
            self::$kernel = new \Kernel($_ENV['APP_ENV'], $_ENV['APP_DEBUG']);
            self::$kernel->boot();
        }

        if (!isset(self::$container)) {
            self::$container = self::$kernel->getContainer();
        }

        return self::$container;
    }

    protected function getManager(): EntityManagerInterface
    {
        return $this->getContainer()->get('doctrine')->getManager();
    }

    protected function tearDown()
    {
        if (null !== static::$kernel) {
            $container = static::$kernel->getContainer();
            static::$kernel->shutdown();
            if ($container instanceof ResettableContainerInterface) {
                $container->reset();
            }
        }
    }

    protected function getExtensions()
    {
        return [
            new PreloadedExtension(
                [new EntityType($this->get('doctrine'))],
                []
            ),
        ];
    }
}