/**
 * Never use this to check if this user has access to anything!
 *
 * Use the SecurityContext, or an implementation of AccessDecisionManager
 * instead, e.g.
 *
 *         $securityContext->isGranted('ROLE_USER');
 *
 * @param string $role
 *
 * @return boolean
 */
public function hasRole($role)
{
    return in_array(strtoupper($role), $this->getRoles(), true);
}

$data = $form->getData();
        $user = new User();
        $user->setUsername($data->getUsername());
        $user->setExpiresAt($data->getExpiresAt());
        $user->setName($data->getName());
        $user->setPassword($data->getPassword());
        $user->setEmail($data->getEmail());
        $user->setCredentialsExpired($data->isCredentialsExpired());
        $user->setRoles(array('ROLE_NEW'));
        $em->persist($user);
        $em->flush();
        // return false
        var_dump(
        $this->get('security.context')>isGranted('ROLE_NEW',$user));