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  # Copyright 2013 IBM Corp.
  #
  #    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
  #
  #         http://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.
  
  import re
  import subprocess
  
  from tempest.tests import base
  
  
  class TestTestList(base.TestCase):
  
      def test_no_import_errors(self):
          import_failures = []
          p = subprocess.Popen(['testr', 'list-tests'], stdout=subprocess.PIPE)
          ids = p.stdout.read()
          ids = ids.split('\n')
          for test_id in ids:
              if re.match('(\w+\.){3}\w+', test_id):
                  if not test_id.startswith('tempest.'):
                      fail_id = test_id.split('unittest.loader.ModuleImport'
                                              'Failure.')[1]
                      import_failures.append(fail_id)
          error_message = ("The following tests have import failures and aren't"
                           " being run with test filters %s" % import_failures)
          self.assertFalse(import_failures, error_message)
  
subject: Add tempest unit test to verify the test list