tests: unit tests for nova.virt

nova/tests/test_virt.py

@@ -0,0 +1,83 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+# Copyright 2011 Isaku Yamahata
+# All Rights Reserved.
+#
+#    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 nova import flags
+from nova import test
+from nova.virt import driver
+
+FLAGS = flags.FLAGS
+
+
+class TestVirtDriver(test.TestCase):
+    def test_block_device(self):
+        swap = {'device_name': '/dev/sdb',
+                'swap_size': 1}
+        ephemerals = [{'num': 0,
+                       'virtual_name': 'ephemeral0',
+                       'device_name': '/dev/sdc1',
+                       'size': 1}]
+        block_device_mapping = [{'mount_device': '/dev/sde',
+                                 'device_path': 'fake_device'}]
+        block_device_info = {
+                'root_device_name': '/dev/sda',
+                'swap': swap,
+                'ephemerals': ephemerals,
+                'block_device_mapping': block_device_mapping}
+
+        empty_block_device_info = {}
+
+        self.assertEqual(
+            driver.block_device_info_get_root(block_device_info), '/dev/sda')
+        self.assertEqual(
+            driver.block_device_info_get_root(empty_block_device_info), None)
+        self.assertEqual(
+            driver.block_device_info_get_root(None), None)
+
+        self.assertEqual(
+            driver.block_device_info_get_swap(block_device_info), swap)
+        self.assertEqual(driver.block_device_info_get_swap(
+            empty_block_device_info)['device_name'], None)
+        self.assertEqual(driver.block_device_info_get_swap(
+            empty_block_device_info)['swap_size'], 0)
+        self.assertEqual(
+            driver.block_device_info_get_swap({'swap': None})['device_name'],
+            None)
+        self.assertEqual(
+            driver.block_device_info_get_swap({'swap': None})['swap_size'],
+            0)
+        self.assertEqual(
+            driver.block_device_info_get_swap(None)['device_name'], None)
+        self.assertEqual(
+            driver.block_device_info_get_swap(None)['swap_size'], 0)
+
+        self.assertEqual(
+            driver.block_device_info_get_ephemerals(block_device_info),
+            ephemerals)
+        self.assertEqual(
+            driver.block_device_info_get_ephemerals(empty_block_device_info),
+            [])
+        self.assertEqual(
+            driver.block_device_info_get_ephemerals(None),
+            [])
+
+    def test_swap_is_usable(self):
+        self.assertFalse(driver.swap_is_usable(None))
+        self.assertFalse(driver.swap_is_usable({'device_name': None}))
+        self.assertFalse(driver.swap_is_usable({'device_name': '/dev/sdb',
+                                                'swap_size': 0}))
+        self.assertTrue(driver.swap_is_usable({'device_name': '/dev/sdb',
+                                                'swap_size': 1}))