tests: unit tests for nova.block_device

nova/tests/test_block_device.py

@@ -0,0 +1,87 @@
+# 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.
+
+"""
+Tests for Block Device utility functions.
+"""
+
+from nova import block_device
+from nova import test
+
+
+class BlockDeviceTestCase(test.TestCase):
+    def test_properties(self):
+        root_device0 = '/dev/sda'
+        root_device1 = '/dev/sdb'
+        mappings = [{'virtual': 'root',
+                     'device': root_device0}]
+
+        properties0 = {'mappings': mappings}
+        properties1 = {'mappings': mappings,
+                       'root_device_name': root_device1}
+
+        self.assertEqual(block_device.properties_root_device_name({}), None)
+        self.assertEqual(
+            block_device.properties_root_device_name(properties0),
+            root_device0)
+        self.assertEqual(
+            block_device.properties_root_device_name(properties1),
+            root_device1)
+
+    def test_ephemeral(self):
+        self.assertFalse(block_device.is_ephemeral('ephemeral'))
+        self.assertTrue(block_device.is_ephemeral('ephemeral0'))
+        self.assertTrue(block_device.is_ephemeral('ephemeral1'))
+        self.assertTrue(block_device.is_ephemeral('ephemeral11'))
+        self.assertFalse(block_device.is_ephemeral('root'))
+        self.assertFalse(block_device.is_ephemeral('swap'))
+        self.assertFalse(block_device.is_ephemeral('/dev/sda1'))
+
+        self.assertEqual(block_device.ephemeral_num('ephemeral0'), 0)
+        self.assertEqual(block_device.ephemeral_num('ephemeral1'), 1)
+        self.assertEqual(block_device.ephemeral_num('ephemeral11'), 11)
+
+        self.assertFalse(block_device.is_swap_or_ephemeral('ephemeral'))
+        self.assertTrue(block_device.is_swap_or_ephemeral('ephemeral0'))
+        self.assertTrue(block_device.is_swap_or_ephemeral('ephemeral1'))
+        self.assertTrue(block_device.is_swap_or_ephemeral('swap'))
+        self.assertFalse(block_device.is_swap_or_ephemeral('root'))
+        self.assertFalse(block_device.is_swap_or_ephemeral('/dev/sda1'))
+
+    def test_mappings_prepend_dev(self):
+        mapping = [
+            {'virtual': 'ami', 'device': '/dev/sda'},
+            {'virtual': 'root', 'device': 'sda'},
+            {'virtual': 'ephemeral0', 'device': 'sdb'},
+            {'virtual': 'swap', 'device': 'sdc'},
+            {'virtual': 'ephemeral1', 'device': 'sdd'},
+            {'virtual': 'ephemeral2', 'device': 'sde'}]
+
+        expected = [
+            {'virtual': 'ami', 'device': '/dev/sda'},
+            {'virtual': 'root', 'device': 'sda'},
+            {'virtual': 'ephemeral0', 'device': '/dev/sdb'},
+            {'virtual': 'swap', 'device': '/dev/sdc'},
+            {'virtual': 'ephemeral1', 'device': '/dev/sdd'},
+            {'virtual': 'ephemeral2', 'device': '/dev/sde'}]
+
+        prepended = block_device.mappings_prepend_dev(mapping)
+        self.assertEqual(prepended.sort(), expected.sort())
+
+    def test_strip_dev(self):
+        self.assertEqual(block_device.strip_dev('/dev/sda'), 'sda')
+        self.assertEqual(block_device.strip_dev('sda'), 'sda')