Eccube\Tests\Plugin\Web\AbstractWebTestCase::logIn PHP Method

    public function logIn($user = null)
    {
        $firewall = 'customer';
        if (!is_object($user)) {
            $user = $this->createCustomer();
        }
        $token = new UsernamePasswordToken($user, null, $firewall, array('ROLE_USER'));
        $this->app['security.token_storage']->setToken($token);
        $this->app['session']->set('_security_' . $firewall, serialize($token));
        $this->app['session']->save();
        $cookie = new Cookie($this->app['session']->getName(), $this->app['session']->getId());
        $this->client->getCookieJar()->set($cookie);
        return $user;
    }