1 files changed, 122 insertions, 0 deletions
diff --git a/nova/tests/unit/virt/libvirt/cpu/test_core.py b/nova/tests/unit/virt/libvirt/cpu/test_core.py
new file mode 100644
index 0000000000..a3cba00d3b
--- /dev/null
+++ b/nova/tests/unit/virt/libvirt/cpu/test_core.py
@@ -0,0 +1,122 @@
+#    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)