PHP Unit testing with Codeception: Useful hints

MySymfonyTest.php

<?php

namespace AppBundle;


use Codeception\Util\Debug;
use Doctrine\ORM\EntityManager;

class MySymfonyTest extends \Codeception\Test\Unit
{

    protected $em;
    protected $container;

    protected function _before() 
    {
       // create entity manager
       $this->em = $this->getModule('Doctrine2')->em;

       /** @var Symfony\Component\DependencyInjection\Container */
       $this->container = $this->getModule('Symfony')->kernel->getContainer();
      
       // Sample Usage
       // $myServiceClass = $conatienr->get('MyService');
      
    }
  
    protected function _after()
    {
    }
  
    public function testSomething() 
    {
        // you can also grab services without grabbing the container first
        $myServiceClass = $this->getModule('Symfony')->grabServiceFromContainer('app.myservice');
      
        // test code here...
    }
  
  
}// end MyTest Class   

unit.suite.yml

namespace: AppBundle
class_name: UnitTester
modules:
    enabled:
        - REST:
            url: /v1
            depends: Symfony
        - Asserts
        - Doctrine2:
            depends: Symfony
        - Symfony:
            var_path: '../../var'
            app_path: '../../app'
        - AppBundle\Helper\Unit