def METHOD_NAME(self):
    with self.assertRaises(MissingFieldException):
        Maintainers.from_yaml(YAML_MISSING_STATUS)
    with self.assertRaises(IllegalValueException):
        Maintainers.from_yaml(YAML_INVALID_STATUS)
    with self.assertRaises(IllegalValueException):
        Maintainers.from_yaml(YAML_MAINTAINERS_NOT_LIST)