63 lines
3.0 KiB
Python
63 lines
3.0 KiB
Python
# 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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import mock
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from nova import objects
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from nova.scheduler.filters import num_instances_filter
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from nova import test
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from nova.tests.unit.scheduler import fakes
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class TestNumInstancesFilter(test.NoDBTestCase):
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def test_filter_num_instances_passes(self):
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self.flags(max_instances_per_host=5, group='filter_scheduler')
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self.filt_cls = num_instances_filter.NumInstancesFilter()
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host = fakes.FakeHostState('host1', 'node1',
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{'num_instances': 4})
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spec_obj = objects.RequestSpec()
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self.assertTrue(self.filt_cls.host_passes(host, spec_obj))
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def test_filter_num_instances_fails(self):
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self.flags(max_instances_per_host=5, group='filter_scheduler')
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self.filt_cls = num_instances_filter.NumInstancesFilter()
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host = fakes.FakeHostState('host1', 'node1',
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{'num_instances': 5})
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spec_obj = objects.RequestSpec()
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self.assertFalse(self.filt_cls.host_passes(host, spec_obj))
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@mock.patch('nova.scheduler.filters.utils.aggregate_values_from_key')
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def test_filter_aggregate_num_instances_value(self, agg_mock):
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self.flags(max_instances_per_host=4, group='filter_scheduler')
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self.filt_cls = num_instances_filter.AggregateNumInstancesFilter()
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host = fakes.FakeHostState('host1', 'node1',
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{'num_instances': 5})
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spec_obj = objects.RequestSpec(context=mock.sentinel.ctx)
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agg_mock.return_value = set([])
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# No aggregate defined for that host.
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self.assertFalse(self.filt_cls.host_passes(host, spec_obj))
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agg_mock.assert_called_once_with(host, 'max_instances_per_host')
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agg_mock.return_value = set(['6'])
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# Aggregate defined for that host.
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self.assertTrue(self.filt_cls.host_passes(host, spec_obj))
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@mock.patch('nova.scheduler.filters.utils.aggregate_values_from_key')
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def test_filter_aggregate_num_instances_value_error(self, agg_mock):
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self.flags(max_instances_per_host=6, group='filter_scheduler')
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self.filt_cls = num_instances_filter.AggregateNumInstancesFilter()
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host = fakes.FakeHostState('host1', 'node1', {})
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spec_obj = objects.RequestSpec(context=mock.sentinel.ctx)
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agg_mock.return_value = set(['XXX'])
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self.assertTrue(self.filt_cls.host_passes(host, spec_obj))
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agg_mock.assert_called_once_with(host, 'max_instances_per_host')
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