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# 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 unittest import mock
from nova import objects
from nova.pci import stats
from nova.scheduler.filters import pci_passthrough_filter
from nova import test
from nova.tests.unit.scheduler import fakes
class TestPCIPassthroughFilter(test.NoDBTestCase):
def setUp(self):
super(TestPCIPassthroughFilter, self).setUp()
self.filt_cls = pci_passthrough_filter.PciPassthroughFilter()
def test_pci_passthrough_pass(self):
pci_stats_mock = mock.MagicMock()
pci_stats_mock.support_requests.return_value = True
request = objects.InstancePCIRequest(count=1,
spec=[{'vendor_id': '8086'}])
requests = objects.InstancePCIRequests(requests=[request])
spec_obj = objects.RequestSpec(pci_requests=requests)
host = fakes.FakeHostState(
'host1', 'node1',
attribute_dict={'pci_stats': pci_stats_mock})
self.assertTrue(self.filt_cls.host_passes(host, spec_obj))
pci_stats_mock.support_requests.assert_called_once_with(
requests.requests)
def test_pci_passthrough_fail(self):
pci_stats_mock = mock.MagicMock()
pci_stats_mock.support_requests.return_value = False
request = objects.InstancePCIRequest(count=1,
spec=[{'vendor_id': '8086'}])
requests = objects.InstancePCIRequests(requests=[request])
spec_obj = objects.RequestSpec(pci_requests=requests)
host = fakes.FakeHostState(
'host1', 'node1',
attribute_dict={'pci_stats': pci_stats_mock})
self.assertFalse(self.filt_cls.host_passes(host, spec_obj))
pci_stats_mock.support_requests.assert_called_once_with(
requests.requests)
def test_pci_passthrough_no_pci_request(self):
spec_obj = objects.RequestSpec(pci_requests=None)
host = fakes.FakeHostState('h1', 'n1', {})
self.assertTrue(self.filt_cls.host_passes(host, spec_obj))
def test_pci_passthrough_empty_pci_request_obj(self):
requests = objects.InstancePCIRequests(requests=[])
spec_obj = objects.RequestSpec(pci_requests=requests)
host = fakes.FakeHostState('h1', 'n1', {})
self.assertTrue(self.filt_cls.host_passes(host, spec_obj))
def test_pci_passthrough_no_pci_stats(self):
request = objects.InstancePCIRequest(count=1,
spec=[{'vendor_id': '8086'}])
requests = objects.InstancePCIRequests(requests=[request])
spec_obj = objects.RequestSpec(pci_requests=requests)
host = fakes.FakeHostState('host1', 'node1',
attribute_dict={
'pci_stats': stats.PciDeviceStats(objects.NUMATopology())})
self.assertFalse(self.filt_cls.host_passes(host, spec_obj))
def test_pci_passthrough_with_pci_stats_none(self):
request = objects.InstancePCIRequest(count=1,
spec=[{'vendor_id': '8086'}])
requests = objects.InstancePCIRequests(requests=[request])
spec_obj = objects.RequestSpec(pci_requests=requests)
host = fakes.FakeHostState('host1', 'node1',
attribute_dict={'pci_stats': None})
self.assertFalse(self.filt_cls.host_passes(host, spec_obj))
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