new_contents: # Copyright 2015 Amazon.com, Inc. or its affiliates. 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. A copy of
  # the License is located at
  #
  # http://aws.amazon.com/apache2.0/
  #
  # or in the "license" file accompanying this file. This file 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.
  from nose.tools import assert_equals
  
  import botocore.session
  
  
  def test_lint_waiter_configs():
      session = botocore.session.get_session()
      for service_name in session.get_available_services():
          client = session.create_client(service_name, 'us-east-1')
          service_model = client.meta.service_model
          for waiter_name in client.waiter_names:
              waiter = client.get_waiter(waiter_name)
              yield _lint_single_waiter, waiter, service_model
  
  
  def _lint_single_waiter(waiter, service_model):
      operation_name = waiter.config.operation
      # Needs to reference an existing operation name.
      if operation_name not in service_model.operation_names:
          raise AssertionError("Waiter config references unknown "
                               "operation: %s" % operation_name)
      # Needs to have at least one acceptor.
      if not waiter.config.acceptors:
          raise AssertionError("Waiter config must have at least "
                               "one acceptor state: %s" % waiter.name)
      # Additional things to add:
      # 1. Verify the error acceptors correspond to a 'code' in the model
      # 2. Verify JMESPath expressions can resolve to something in
      #    the response.
  
  
subject: Add start of basic waiter model validation