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# 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')
def test_strip_prefix(self):
self.assertEqual(block_device.strip_prefix('/dev/sda'), 'a')
self.assertEqual(block_device.strip_prefix('a'), 'a')
self.assertEqual(block_device.strip_prefix('xvda'), 'a')
self.assertEqual(block_device.strip_prefix('vda'), 'a')
def test_volume_in_mapping(self):
swap = {'device_name': '/dev/sdb',
'swap_size': 1}
ephemerals = [{'num': 0,
'virtual_name': 'ephemeral0',
'device_name': '/dev/sdc1',
'size': 1},
{'num': 2,
'virtual_name': 'ephemeral2',
'device_name': '/dev/sdd',
'size': 1}]
block_device_mapping = [{'mount_device': '/dev/sde',
'device_path': 'fake_device'},
{'mount_device': '/dev/sdf',
'device_path': 'fake_device'}]
block_device_info = {
'root_device_name': '/dev/sda',
'swap': swap,
'ephemerals': ephemerals,
'block_device_mapping': block_device_mapping}
def _assert_volume_in_mapping(device_name, true_or_false):
in_mapping = block_device.volume_in_mapping(
device_name, block_device_info)
self.assertEquals(in_mapping, true_or_false)
_assert_volume_in_mapping('sda', False)
_assert_volume_in_mapping('sdb', True)
_assert_volume_in_mapping('sdc1', True)
_assert_volume_in_mapping('sdd', True)
_assert_volume_in_mapping('sde', True)
_assert_volume_in_mapping('sdf', True)
_assert_volume_in_mapping('sdg', False)
_assert_volume_in_mapping('sdh1', False)
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