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.
  
  from jacket.objects import compute
  from jacket.compute.scheduler.filters import exact_ram_filter
  from jacket.compute import test
  from jacket.tests.compute.unit.scheduler import fakes
  
  
  class TestRamFilter(test.NoDBTestCase):
  
      def setUp(self):
          super(TestRamFilter, self).setUp()
          self.filt_cls = exact_ram_filter.ExactRamFilter()
  
      def test_exact_ram_filter_passes(self):
          spec_obj = compute.RequestSpec(
              flavor=compute.Flavor(memory_mb=1024))
          ram_mb = 1024
          host = self._get_host({'free_ram_mb': ram_mb,
                                 'total_usable_ram_mb': ram_mb})
          self.assertTrue(self.filt_cls.host_passes(host, spec_obj))
          self.assertEqual(host.limits.get('memory_mb'), ram_mb)
  
      def test_exact_ram_filter_fails(self):
          spec_obj = compute.RequestSpec(
              flavor=compute.Flavor(memory_mb=512))
          host = self._get_host({'free_ram_mb': 1024})
          self.assertFalse(self.filt_cls.host_passes(host, spec_obj))
          self.assertNotIn('memory_mb', host.limits)
  
      def _get_host(self, host_attributes):
          return fakes.FakeHostState('host1', 'node1', host_attributes)
  