public function testOnlyOneBothValues()
 {
     fORMValidation::addOnlyOneRule('User', array('is_validated', 'time_of_last_login'));
     $this->setExpectedException('fValidationException');
     $user = $this->createUser();
     $user->setIsValidated(TRUE);
     $user->setTimeOfLastLogin(new fTimestamp());
     $user->validate();
 }