PHPSpec+Symfony Issue

AbstractService.php

<?php
namespace AppBundle\Service;

use Symfony\Component\DependencyInjection\Container;

abstract class AbstractService implements SomeInterface {
    protected $container;

    public function __construct(Container $container)
    {
        $this->container = $container;
    }
}

ChildService.php

...

class ChildService extends AbstractService {}

ChildServiceSpec.php

<?php

namespace spec\AppBundle\Service;

use PhpSpec\ObjectBehavior;
use Symfony\Component\DependencyInjection\ContainerInterface;

class ChildServiceSpec extends AbstractService
{
    public function let(ContainerInterface $container)
    {
        $this->beConstructedWith($container);
    }

    public function it_is_initializable()
    {
        $this->shouldHaveType('AppBundle\Service\ChildService');
    }
}

error

./bin/phpspec run
AppBundle/Service/ChildService                                              
  19  - it is initializable
      error: Argument 1 passed to AppBundle\Service\AbstractService::__construct() must be an instance of
      Symfony\Component\DependencyInjection\Container, instance of Double\ContainerInterface\P1 given

                                      100%                                       1
1 specs
1 example (1 broken)
40ms