text: # -*- mode:python; coding:utf-8 -*-
  
  # Copyright (c) 2020 IBM Corp. All rights reserved.
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     https://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  """Validate based on all registered validators."""
  
  import trestle.core.validator_factory as vfact
  from trestle.core.base_model import OscalBaseModel
  from trestle.core.validator import Validator
  
  
  class AllValidator(Validator):
      """Validator to confirm the model passes all registered validation tests."""
  
      last_failure_msg: str
  
      def error_msg(self) -> str:
          """Return information on which validation failed."""
          return self.last_failure_msg
  
      def model_is_valid(self, model: OscalBaseModel) -> bool:
          """
          Validate an oscal model against all available validators in the trestle library.
  
          args:
              model: An Oscal model that can be passed to the validator.
  
          returns:
              True (valid) if the model passed all registered validators.
          """
          self.last_failure_msg = self.__doc__
          for val in vfact.validator_factory.get_all():
              if val != self:
                  if not val.model_is_valid(model):
                      self.last_failure_msg = val.error_msg()
                      return False
          return True
  