d4eb4a9ba1
test.py was previously not in the tests directory. This means that downstream packagers of Cinder have to specifically exclude it from the main Cinder package (which does not typically include unit tests). Move it under the cinder/tests/unit/ dir where it should be, to clean this up. Change-Id: I65c50722f5990f540d84fa361b997302bbc935c5
102 lines
4.1 KiB
Python
102 lines
4.1 KiB
Python
# Copyright 2013 eBay Inc.
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#
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""
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Tests For Allocated Capacity Weigher.
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"""
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from unittest import mock
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from cinder.common import constants
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from cinder import context
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from cinder.scheduler import weights
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from cinder.tests.unit.scheduler import fakes
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from cinder.tests.unit import test
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from cinder.volume import volume_utils
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class AllocatedCapacityWeigherTestCase(test.TestCase):
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def setUp(self):
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super(AllocatedCapacityWeigherTestCase, self).setUp()
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self.host_manager = fakes.FakeHostManager()
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self.weight_handler = weights.OrderedHostWeightHandler(
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'cinder.scheduler.weights')
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def _get_weighed_host(self, hosts, weight_properties=None):
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if weight_properties is None:
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weight_properties = {}
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return self.weight_handler.get_weighed_objects(
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[weights.capacity.AllocatedCapacityWeigher], hosts,
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weight_properties)[0]
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@mock.patch('cinder.db.sqlalchemy.api.service_get_all')
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def _get_all_backends(self, _mock_service_get_all, disabled=False):
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ctxt = context.get_admin_context()
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fakes.mock_host_manager_db_calls(_mock_service_get_all,
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disabled=disabled)
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host_states = self.host_manager.get_all_backend_states(ctxt)
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_mock_service_get_all.assert_called_once_with(
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ctxt,
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None, # backend_match_level
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topic=constants.VOLUME_TOPIC, frozen=False, disabled=disabled)
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return host_states
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def test_default_of_spreading_first(self):
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hostinfo_list = self._get_all_backends()
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# host1: allocated_capacity_gb=0, weight=0 Norm=0.0
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# host2: allocated_capacity_gb=1748, weight=-1748
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# host3: allocated_capacity_gb=256, weight=-256
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# host4: allocated_capacity_gb=1848, weight=-1848 Norm=-1.0
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# host5: allocated_capacity_gb=1548, weight=-1540
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# so, host1 should win:
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weighed_host = self._get_weighed_host(hostinfo_list)
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self.assertEqual(0.0, weighed_host.weight)
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self.assertEqual(
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'host1', volume_utils.extract_host(weighed_host.obj.host))
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def test_capacity_weight_multiplier1(self):
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self.flags(allocated_capacity_weight_multiplier=1.0)
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hostinfo_list = self._get_all_backends()
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# host1: allocated_capacity_gb=0, weight=0 Norm=0.0
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# host2: allocated_capacity_gb=1748, weight=1748
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# host3: allocated_capacity_gb=256, weight=256
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# host4: allocated_capacity_gb=1848, weight=1848 Norm=1.0
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# host5: allocated_capacity_gb=1548, weight=1540
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# so, host4 should win:
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weighed_host = self._get_weighed_host(hostinfo_list)
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self.assertEqual(1.0, weighed_host.weight)
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self.assertEqual(
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'host4', volume_utils.extract_host(weighed_host.obj.host))
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def test_capacity_weight_multiplier2(self):
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self.flags(allocated_capacity_weight_multiplier=-2.0)
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hostinfo_list = self._get_all_backends()
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# host1: allocated_capacity_gb=0, weight=0 Norm=0.0
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# host2: allocated_capacity_gb=1748, weight=-3496
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# host3: allocated_capacity_gb=256, weight=-512
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# host4: allocated_capacity_gb=1848, weight=-3696 Norm=-2.0
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# host5: allocated_capacity_gb=1548, weight=-3080
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# so, host1 should win:
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weighed_host = self._get_weighed_host(hostinfo_list)
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self.assertEqual(0.0, weighed_host.weight)
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self.assertEqual(
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'host1', volume_utils.extract_host(weighed_host.obj.host))
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