'Validate request fails without `auth_url`.'

def test_validate_sp_request_without_auth_url_fails(self):

    request_to_validate = {'sp_url': self.valid_sp_url}
    self.assertRaises(exception.SchemaValidationError, self.create_sp_validator.validate, request_to_validate)
    request_to_validate = {'auth_url': None, 'sp_url': self.valid_sp_url}
    self.assertRaises(exception.SchemaValidationError, self.create_sp_validator.validate, request_to_validate)
