public function testAuthenticateValidAdmin()
{
$this->user->setActive();
$this->user->setAdmin(TRUE);
$this->em->persist($this->user);
$this->em->flush();
$this->service->setUsername(self::USERNAME)->setPassword(self::PASSWORD)->setAdmin(TRUE);
$result = $this->service->authenticate();
$this->assertEquals(\Zend_Auth_Result::SUCCESS, $result->getCode());
}