Base Clase wich drops all Collections and build the them from scratch

MongoDB: AbstractTest.php

<?php

namespace XXX\Tests\Document;

use Symfony\Bundle\FrameworkBundle\Test\WebTestCase;

abstract class AbstractTest extends WebTestCase
{

    static $container;
    static $application;

    protected function loadDm($manager = "default", $clear = true) {
        $this->dm = self::$container->get('doctrine_mongodb')->getManager($manager);

        if ($this->dm and $clear) {
            $this->dm->getSchemaManager()->dropCollections();
            $this->dm->getSchemaManager()->ensureIndexes();
        }
    }


    public static function setUpBeforeClass()
    {
        //start the symfony kernel
        $kernel = static::createKernel();
        $kernel->boot();

        //get the DI container
        self::$container = $kernel->getContainer();
        self::$application = new \Symfony\Bundle\FrameworkBundle\Console\Application($kernel);
        self::$application->setAutoExit(false);

    }
}