'Exception is raised when `description` as a non-string value.'

def test_validate_sp_request_with_invalid_description_fails(self):

    request_to_validate = {'auth_url': self.valid_auth_url, 'sp_url': self.valid_sp_url, 'description': False}
    self.assertRaises(exception.SchemaValidationError, self.create_sp_validator.validate, request_to_validate)
