text: # Copyright 2012 Nebula, Inc.
  # 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.
  
  from oslo_config import cfg
  
  from nova.cells import rpcapi as cells_rpcapi
  from nova.cells import state
  from nova import db
  from nova.db.sqlalchemy import models
  from nova import exception
  from nova.tests.functional.v3 import api_sample_base
  
  CONF = cfg.CONF
  CONF.import_opt('osapi_compute_extension',
                  'nova.api.openstack.compute.extensions')
  
  
  class CellsSampleJsonTest(api_sample_base.ApiSampleTestBaseV3):
      extension_name = "os-cells"
      # TODO(gmann): Overriding '_api_version' till all functional tests
      # are merged between v2 and v2.1. After that base class variable
      # itself can be changed to 'v2'
      _api_version = 'v2'
  
      def _get_flags(self):
          f = super(CellsSampleJsonTest, self)._get_flags()
          f['osapi_compute_extension'] = CONF.osapi_compute_extension[:]
          f['osapi_compute_extension'].append(
              'nova.api.openstack.compute.contrib.cells.Cells')
          f['osapi_compute_extension'].append('nova.api.openstack.compute.'
                        'contrib.cell_capacities.Cell_capacities')
          return f
  
      def setUp(self):
          # db_check_interval < 0 makes cells manager always hit the DB
          self.flags(enable=True, db_check_interval=-1, group='cells')
          super(CellsSampleJsonTest, self).setUp()
          self._stub_cells()
  
      def _stub_cells(self, num_cells=5):
          self.cell_list = []
          self.cells_next_id = 1
  
          def _fake_cell_get_all(context):
              return self.cell_list
  
          def _fake_cell_get(inst, context, cell_name):
              for cell in self.cell_list:
                  if cell['name'] == cell_name:
                      return cell
              raise exception.CellNotFound(cell_name=cell_name)
  
          for x in xrange(num_cells):
              cell = models.Cell()
              our_id = self.cells_next_id
              self.cells_next_id += 1
              cell.update({'id': our_id,
                           'name': 'cell%s' % our_id,
                           'transport_url': 'rabbit://username%s@/' % our_id,
                           'is_parent': our_id % 2 == 0})
              self.cell_list.append(cell)
  
          self.stubs.Set(db, 'cell_get_all', _fake_cell_get_all)
          self.stubs.Set(cells_rpcapi.CellsAPI, 'cell_get', _fake_cell_get)
  
      def test_cells_empty_list(self):
          # Override this
          self._stub_cells(num_cells=0)
          response = self._do_get('os-cells')
          subs = self._get_regexes()
          self._verify_response('cells-list-empty-resp', subs, response, 200)
  
      def test_cells_list(self):
          response = self._do_get('os-cells')
          subs = self._get_regexes()
          self._verify_response('cells-list-resp', subs, response, 200)
  
      def test_cells_get(self):
          response = self._do_get('os-cells/cell3')
          subs = self._get_regexes()
          self._verify_response('cells-get-resp', subs, response, 200)
  
      def test_get_cell_capacity(self):
          self._mock_cell_capacity()
          state_manager = state.CellStateManager()
          my_state = state_manager.get_my_state()
          response = self._do_get('os-cells/%s/capacities' %
                  my_state.name)
          subs = self._get_regexes()
          return self._verify_response('cells-capacities-resp',
                                          subs, response, 200)
  
      def test_get_all_cells_capacity(self):
          self._mock_cell_capacity()
          response = self._do_get('os-cells/capacities')
          subs = self._get_regexes()
          return self._verify_response('cells-capacities-resp',
                                          subs, response, 200)
  
      def _mock_cell_capacity(self):
          self.mox.StubOutWithMock(self.cells.manager.state_manager,
                                   'get_our_capacities')
          response = {"ram_free":
                          {"units_by_mb": {"8192": 0, "512": 13,
                                           "4096": 1, "2048": 3, "16384": 0},
                           "total_mb": 7680},
                      "disk_free":
                          {"units_by_mb": {"81920": 11, "20480": 46,
                                           "40960": 23, "163840": 5, "0": 0},
                           "total_mb": 1052672}
          }
          self.cells.manager.state_manager.get_our_capacities(). \
              AndReturn(response)
          self.mox.ReplayAll()
  