PHPUnit test case for protected methods

Test.php

<?php

namespace Application\Service;

use Application\Model\Service;
use Application\Model\User;

class ServiceValidatorTest extends \PHPUnit_Framework_TestCase
{
    /**
     * @var User
     */
    protected $user;

    /**
     * @var Service
     */
    protected $service;

    /**
     * @var ServiceValidator
     */
    protected $validator;

    public function setUp()
    {
        $this->user = new User();
        $this->service = new Service();
        $this->validator = new ServiceValidator($this->user, $this->service);
    }

    public function testValidate()
    {
        $this->service->id = 1;
        $this->service->status = Service::STATUS_ACTIVE;
        $this->user->setServiceIds([$this->service->id]);
        $this->validator->validate();
    }

    public function testServiceIsNotActiveException()
    {
        $this->service->status = Service::STATUS_PASSIVE;
        $method = $this->getProtectedObjectMethod('checkIsServiceActive');

        $this->setExpectedException('Application\Service\Exception\ServiceIsNotActiveException');
        $method->invoke($this->validator);
    }

    public function testPermissionDeniedToAccessServiceException()
    {
        $method = $this->getProtectedObjectMethod('checkIsServiceInUserServices');
        $this->setExpectedException('Application\Service\Exception\PermissionDeniedToAccessServiceException');
        $method->invoke($this->validator);
    }

    /**
     * @param $methodName
     * @return \ReflectionMethod
     */
    protected function getProtectedObjectMethod($methodName)
    {
        $reflection = new \ReflectionClass($this->validator);
        $method = $reflection->getMethod($methodName);
        $method->setAccessible(true);
        return $method;
    }
}