text: # Copyright 2019 Red Hat, Inc.
  # 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
  #
  #         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 testtools
  
  from glance.db.migration import CURRENT_RELEASE
  from glance.version import version_info
  
  
  class TestDataMigrationVersion(testtools.TestCase):
  
      def test_migration_version(self):
          """Make sure the data migration version info has been updated."""
  
          release_number = int(version_info.version_string().split('.', 1)[0])
  
          # by rule, release names must be composed of the 26 letters of the
          # ISO Latin alphabet (ord('A')==65, ord('Z')==90)
          release_letter = str(CURRENT_RELEASE[:1].upper()).encode('ascii')
  
          # Convert release letter into an int in [1:26].  The first
          # glance release was 'Bexar'.
          converted_release_letter = (ord(release_letter) -
                                      ord(u'B'.encode('ascii')) + 1)
  
          # Project the release number into [1:26]
          converted_release_number = release_number % 26
  
          # Prepare for the worst with a super-informative message
          msg = ('\n\n'
                 'EMERGENCY!\n'
                 'glance.db.migration.CURRENT_RELEASE is out of sync '
                 'with the glance version.\n'
                 '  CURRENT_RELEASE: %s\n'
                 '  glance version: %s\n'
                 'glance.db.migration.CURRENT_RELEASE needs to be '
                 'updated IMMEDIATELY.\n'
                 'The gate will be wedged until the update is made.\n'
                 'EMERGENCY!\n'
                 '\n') % (CURRENT_RELEASE,
                          version_info.version_string())
  
          self.assertEqual(converted_release_letter,
                           converted_release_number,
                           msg)
  