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  # Copyright 2010 United States Government as represented by the
  # Administrator of the National Aeronautics and Space Administration.
  # 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.
  
  """Tests for the testing the metadata code."""
  
  import base64
  import httplib
  
  from nova import test
  from nova import wsgi
  from nova.api.ec2 import metadatarequesthandler
  from nova.db.sqlalchemy import api
  
  
  class MetadataTestCase(test.TestCase):
      """Test that metadata is returning proper values."""
      def setUp(self):
          super(MetadataTestCase, self).setUp()
          self.instance = ({'id': 1,
                           'project_id': 'test',
                           'key_name': None,
                           'host': 'test',
                           'launch_index': 1,
                           'instance_type': 'm1.tiny',
                           'reservation_id': 'r-xxxxxxxx',
                           'user_data': '',
                           'image_ref': 7,
                           'hostname' : 'test'})
  
          def instance_get(*args, **kwargs):
              return self.instance
  
          def floating_get(*args, **kwargs):
              return '99.99.99.99'
  
          self.conn = self.fake_connection()
          self.stubs.Set(api, 'instance_get', instance_get)
          self.stubs.Set(api, 'fixed_ip_get_instance', instance_get)
          self.stubs.Set(api, 'instance_get_floating_address', floating_get)
  
      def real_connection(self):
          router = metadatarequesthandler.MetadataRequestHandler()
          service = wsgi.Server()
          service.start(router, 16969)
          return httplib.HTTPConnection('127.0.0.1', 16969)
  
      def fake_connection(self):
          return metadatarequesthandler.MetadataRequestHandler.fake_connection()
  
      def request(self, relative_url):
          self.conn.request('GET', relative_url)
          return self.conn.getresponse().read()
  
      def test_base(self):
          self.assertEqual(self.request('/'), 'meta-data/\nuser-data')
  
      def test_user_data(self):
          self.instance['user_data'] = base64.b64encode('happy')
          self.assertEqual(self.request('/user-data'), 'happy')
  
      def test_security_groups(self):
          def sg_get(*args, **kwargs):
              return [{'name': 'default'}, {'name': 'other'}]
          self.stubs.Set(api, 'security_group_get_by_instance', sg_get)
          self.assertEqual(self.request('/meta-data/security-groups'),
                           'default\nother')
  
  
subject: add metadata tests