text: #    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 resource filters API."""
  
  from unittest import mock
  
  import ddt
  import six
  
  from cinder.api import microversions as mv
  from cinder.api.v3 import resource_filters as v3_filters
  from cinder import test
  from cinder.tests.unit.api import fakes
  from cinder.tests.unit import fake_constants as fake
  
  
  @ddt.ddt
  class ResourceFiltersAPITestCase(test.TestCase):
      """Test Case for filter API."""
  
      def setUp(self):
          super(ResourceFiltersAPITestCase, self).setUp()
          self.controller = v3_filters.ResourceFiltersController()
  
      @ddt.data({'filters': {'volume': ['key1']},
                 'resource': 'volume',
                 'expected_filters': [{'resource': 'volume',
                                       'filters': ['key1']}]},
                {'filters': {'volume': ['key1'], 'snapshot': ['key2']},
                 'resource': None,
                 'expected_filters': [{'resource': 'volume',
                                       'filters': ['key1']},
                                      {'resource': 'snapshot',
                                       'filters': ['key2']}]},
                {'filters': {'volume': ['key1', 'key2']},
                 'resource': 'snapshot',
                 'expected_filters': []})
      @ddt.unpack
      def test_get_allowed_filters(self, filters, resource, expected_filters):
          request_url = '/v3/%s/resource_filters' % fake.PROJECT_ID
          if resource is not None:
              request_url += '?resource=%s' % resource
          req = fakes.HTTPRequest.blank(request_url,
                                        version=mv.RESOURCE_FILTER_CONFIG)
  
          with mock.patch('cinder.api.common._FILTERS_COLLECTION', filters):
              result = self.controller.index(req)
              six.assertCountEqual(self,
                                   list(six.viewkeys(result)),
                                   ['resource_filters'])
              six.assertCountEqual(self,
                                   expected_filters,
                                   result['resource_filters'])
  