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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 exception
from nova import test
from nova.tests import fixtures
from nova.virt.libvirt.cpu import core
class TestCore(test.NoDBTestCase):
@mock.patch.object(core.filesystem, 'read_sys')
@mock.patch.object(core.hardware, 'parse_cpu_spec')
def test_get_available_cores(self, mock_parse_cpu_spec, mock_read_sys):
mock_read_sys.return_value = '1-2'
mock_parse_cpu_spec.return_value = set([1, 2])
self.assertEqual(set([1, 2]), core.get_available_cores())
mock_read_sys.assert_called_once_with(core.AVAILABLE_PATH)
mock_parse_cpu_spec.assert_called_once_with('1-2')
@mock.patch.object(core.filesystem, 'read_sys')
@mock.patch.object(core.hardware, 'parse_cpu_spec')
def test_get_available_cores_none(
self, mock_parse_cpu_spec, mock_read_sys):
mock_read_sys.return_value = ''
self.assertEqual(set(), core.get_available_cores())
mock_parse_cpu_spec.assert_not_called()
@mock.patch.object(core, 'get_available_cores')
def test_exists(self, mock_get_available_cores):
mock_get_available_cores.return_value = set([1])
self.assertTrue(core.exists(1))
mock_get_available_cores.assert_called_once_with()
self.assertFalse(core.exists(2))
@mock.patch.object(
core, 'CPU_PATH_TEMPLATE',
new_callable=mock.PropertyMock(return_value='/sys/blah%(core)s'))
@mock.patch.object(core, 'exists')
def test_gen_cpu_path(self, mock_exists, mock_cpu_path):
mock_exists.return_value = True
self.assertEqual('/sys/blah1', core.gen_cpu_path(1))
mock_exists.assert_called_once_with(1)
@mock.patch.object(core, 'exists')
def test_gen_cpu_path_raises(self, mock_exists):
mock_exists.return_value = False
self.assertRaises(ValueError, core.gen_cpu_path, 1)
self.assertIn('Unable to access CPU: 1', self.stdlog.logger.output)
class TestCoreHelpers(test.NoDBTestCase):
def setUp(self):
super(TestCoreHelpers, self).setUp()
self.useFixture(fixtures.PrivsepFixture())
_p1 = mock.patch.object(core, 'exists', return_value=True)
self.mock_exists = _p1.start()
self.addCleanup(_p1.stop)
_p2 = mock.patch.object(core, 'gen_cpu_path',
side_effect=lambda x: '/fakesys/blah%s' % x)
self.mock_gen_cpu_path = _p2.start()
self.addCleanup(_p2.stop)
@mock.patch.object(core.filesystem, 'read_sys')
def test_get_online(self, mock_read_sys):
mock_read_sys.return_value = '1'
self.assertTrue(core.get_online(1))
mock_read_sys.assert_called_once_with('/fakesys/blah1/online')
@mock.patch.object(core.filesystem, 'read_sys')
def test_get_online_not_exists(self, mock_read_sys):
mock_read_sys.side_effect = exception.FileNotFound(file_path='foo')
self.assertTrue(core.get_online(1))
mock_read_sys.assert_called_once_with('/fakesys/blah1/online')
@mock.patch.object(core.filesystem, 'write_sys')
@mock.patch.object(core, 'get_online')
def test_set_online(self, mock_get_online, mock_write_sys):
mock_get_online.return_value = True
self.assertTrue(core.set_online(1))
mock_write_sys.assert_called_once_with('/fakesys/blah1/online',
data='1')
mock_get_online.assert_called_once_with(1)
@mock.patch.object(core.filesystem, 'write_sys')
@mock.patch.object(core, 'get_online')
def test_set_offline(self, mock_get_online, mock_write_sys):
mock_get_online.return_value = False
self.assertTrue(core.set_offline(1))
mock_write_sys.assert_called_once_with('/fakesys/blah1/online',
data='0')
mock_get_online.assert_called_once_with(1)
@mock.patch.object(core.filesystem, 'read_sys')
def test_get_governor(self, mock_read_sys):
mock_read_sys.return_value = 'fake_gov'
self.assertEqual('fake_gov', core.get_governor(1))
mock_read_sys.assert_called_once_with(
'/fakesys/blah1/cpufreq/scaling_governor')
@mock.patch.object(core, 'get_governor')
@mock.patch.object(core.filesystem, 'write_sys')
def test_set_governor(self, mock_write_sys, mock_get_governor):
mock_get_governor.return_value = 'fake_gov'
self.assertEqual('fake_gov',
core.set_governor(1, 'fake_gov'))
mock_write_sys.assert_called_once_with(
'/fakesys/blah1/cpufreq/scaling_governor', data='fake_gov')
mock_get_governor.assert_called_once_with(1)
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