Symfony2 : Functionnal testing in Request Scope using a Service depending on a Request Listener Service

I'm new with services and phpUnit.

So I'm trying to test my (working) services. Here is my services.yml :

services:
    history_cookie:
        class:        VENDOR\Bundle\Service\Visitor\EventListener\HistoryCookie
        scope:        request
        tags:
            -
                name: kernel.event_listener
                method: onKernelRequest
                event: kernel.request
    map_utm_origin:
        class:        VENDOR\Bundle\Service\Visitor\MapUtmOrigin
        arguments:    [@history_cookie, @doctrine.orm.entity_manager]
        scope:        request

To summarize the rest of my code, I've got a listener service called HistoryCookie which retrieve some GET parametres (utm) if present, and store them in Session and private variables.

And my other Service, MapUtmOrigin, retrieves the HistoryCookie Service object to get those parametres, and map them to an object from the database.

1. Because I'm also pretty new with Services, is it the best way to deal with that situation ?

2. In Unit Testing, I can't make it work

Here is my last try of functionnal testing (I'm using TheodoEvolutionSessionBundle to manage Symfony 1.2 / 1.4 Sessions) :

    $configuration = $this->getMock('Theodo\Evolution\Bundle\SessionBundle\Manager\BagManagerConfigurationInterface');
    $configuration->expects($this->once())
        ->method('getNamespaces')
        ->will($this->returnValue(array('array', 'scalar')))
    ;
    $session = new Session(new MockArraySessionStorage());
    $manager = new BagManager($configuration);
    $manager->initialize($session);
    $client = static::createClient();
    $container = $client->getContainer();
    $container->enterScope('request');
    $container->set('session', $session);
    $crawler = $client->request('GET', '/contact?utm_source=google&utm_medium=cpc&utm_campaign=nocampaign');
    $container = $client->getContainer();
    ld($container->get("map_utm_origin"));
    ld($session->getBag("symfony/user/sfUser/attributes"));

But $container->get("map_utm_origin") is always empty (not null), like it has never handled the request (it is normally initalized in onKernelRequest($requestEvent)), though $session->getBag("symfony/user/sfUser/attributes") has correctly been set !