cinder/cinder/tests/test_volume_utils.py

658 lines
30 KiB
Python

# Copyright 2011 OpenStack Foundation
# 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 miscellaneous util methods used with volume."""
import mock
from oslo_concurrency import processutils
from oslo_config import cfg
from cinder import exception
from cinder.openstack.common import log as logging
from cinder import test
from cinder import utils
from cinder.volume import throttling
from cinder.volume import utils as volume_utils
LOG = logging.getLogger(__name__)
CONF = cfg.CONF
class NotifyUsageTestCase(test.TestCase):
@mock.patch('cinder.volume.utils._usage_from_volume')
@mock.patch('cinder.volume.utils.CONF')
@mock.patch('cinder.volume.utils.rpc')
def test_notify_about_volume_usage(self, mock_rpc, mock_conf, mock_usage):
mock_conf.host = 'host1'
output = volume_utils.notify_about_volume_usage(mock.sentinel.context,
mock.sentinel.volume,
'test_suffix')
self.assertIsNone(output)
mock_usage.assert_called_once_with(mock.sentinel.context,
mock.sentinel.volume)
mock_rpc.get_notifier.assert_called_once_with('volume', 'host1')
mock_rpc.get_notifier.return_value.info.assert_called_once_with(
mock.sentinel.context,
'volume.test_suffix',
mock_usage.return_value)
@mock.patch('cinder.volume.utils._usage_from_volume')
@mock.patch('cinder.volume.utils.CONF')
@mock.patch('cinder.volume.utils.rpc')
def test_notify_about_volume_usage_with_kwargs(self, mock_rpc, mock_conf,
mock_usage):
mock_conf.host = 'host1'
output = volume_utils.notify_about_volume_usage(
mock.sentinel.context,
mock.sentinel.volume,
'test_suffix',
extra_usage_info={'a': 'b', 'c': 'd'},
host='host2')
self.assertIsNone(output)
mock_usage.assert_called_once_with(mock.sentinel.context,
mock.sentinel.volume, a='b', c='d')
mock_rpc.get_notifier.assert_called_once_with('volume', 'host2')
mock_rpc.get_notifier.return_value.info.assert_called_once_with(
mock.sentinel.context,
'volume.test_suffix',
mock_usage.return_value)
@mock.patch('cinder.volume.utils._usage_from_volume')
@mock.patch('cinder.volume.utils.CONF')
@mock.patch('cinder.volume.utils.rpc')
def test_notify_about_replication_usage(self, mock_rpc,
mock_conf, mock_usage):
mock_conf.host = 'host1'
output = volume_utils.notify_about_replication_usage(
mock.sentinel.context,
mock.sentinel.volume,
'test_suffix')
self.assertIsNone(output)
mock_usage.assert_called_once_with(mock.sentinel.context,
mock.sentinel.volume)
mock_rpc.get_notifier.assert_called_once_with('replication', 'host1')
mock_rpc.get_notifier.return_value.info.assert_called_once_with(
mock.sentinel.context,
'replication.test_suffix',
mock_usage.return_value)
@mock.patch('cinder.volume.utils._usage_from_volume')
@mock.patch('cinder.volume.utils.CONF')
@mock.patch('cinder.volume.utils.rpc')
def test_notify_about_replication_usage_with_kwargs(self, mock_rpc,
mock_conf, mock_usage):
mock_conf.host = 'host1'
output = volume_utils.notify_about_replication_usage(
mock.sentinel.context,
mock.sentinel.volume,
'test_suffix',
extra_usage_info={'a': 'b', 'c': 'd'},
host='host2')
self.assertIsNone(output)
mock_usage.assert_called_once_with(mock.sentinel.context,
mock.sentinel.volume,
a='b', c='d')
mock_rpc.get_notifier.assert_called_once_with('replication', 'host2')
mock_rpc.get_notifier.return_value.info.assert_called_once_with(
mock.sentinel.context,
'replication.test_suffix',
mock_usage.return_value)
@mock.patch('cinder.volume.utils._usage_from_volume')
@mock.patch('cinder.volume.utils.CONF')
@mock.patch('cinder.volume.utils.rpc')
def test_notify_about_replication_error(self, mock_rpc,
mock_conf, mock_usage):
mock_conf.host = 'host1'
output = volume_utils.notify_about_replication_error(
mock.sentinel.context,
mock.sentinel.volume,
'test_suffix')
self.assertIsNone(output)
mock_usage.assert_called_once_with(mock.sentinel.context,
mock.sentinel.volume)
mock_rpc.get_notifier.assert_called_once_with('replication', 'host1')
mock_rpc.get_notifier.return_value.error.assert_called_once_with(
mock.sentinel.context,
'replication.test_suffix',
mock_usage.return_value)
@mock.patch('cinder.volume.utils._usage_from_volume')
@mock.patch('cinder.volume.utils.CONF')
@mock.patch('cinder.volume.utils.rpc')
def test_notify_about_replication_error_with_kwargs(self, mock_rpc,
mock_conf, mock_usage):
mock_conf.host = 'host1'
output = volume_utils.notify_about_replication_error(
mock.sentinel.context,
mock.sentinel.volume,
'test_suffix',
extra_error_info={'a': 'b', 'c': 'd'},
host='host2')
self.assertIsNone(output)
mock_usage.assert_called_once_with(mock.sentinel.context,
mock.sentinel.volume,
a='b', c='d')
mock_rpc.get_notifier.assert_called_once_with('replication', 'host2')
mock_rpc.get_notifier.return_value.error.assert_called_once_with(
mock.sentinel.context,
'replication.test_suffix',
mock_usage.return_value)
@mock.patch('cinder.volume.utils._usage_from_snapshot')
@mock.patch('cinder.volume.utils.CONF')
@mock.patch('cinder.volume.utils.rpc')
def test_notify_about_snapshot_usage(self, mock_rpc,
mock_conf, mock_usage):
mock_conf.host = 'host1'
output = volume_utils.notify_about_snapshot_usage(
mock.sentinel.context,
mock.sentinel.snapshot,
'test_suffix')
self.assertIsNone(output)
mock_usage.assert_called_once_with(mock.sentinel.context,
mock.sentinel.snapshot)
mock_rpc.get_notifier.assert_called_once_with('snapshot', 'host1')
mock_rpc.get_notifier.return_value.info.assert_called_once_with(
mock.sentinel.context,
'snapshot.test_suffix',
mock_usage.return_value)
@mock.patch('cinder.volume.utils._usage_from_snapshot')
@mock.patch('cinder.volume.utils.CONF')
@mock.patch('cinder.volume.utils.rpc')
def test_notify_about_snapshot_usage_with_kwargs(self, mock_rpc, mock_conf,
mock_usage):
mock_conf.host = 'host1'
output = volume_utils.notify_about_snapshot_usage(
mock.sentinel.context,
mock.sentinel.snapshot,
'test_suffix',
extra_usage_info={'a': 'b', 'c': 'd'},
host='host2')
self.assertIsNone(output)
mock_usage.assert_called_once_with(mock.sentinel.context,
mock.sentinel.snapshot,
a='b', c='d')
mock_rpc.get_notifier.assert_called_once_with('snapshot', 'host2')
mock_rpc.get_notifier.return_value.info.assert_called_once_with(
mock.sentinel.context,
'snapshot.test_suffix',
mock_usage.return_value)
def test_usage_from_snapshot(self):
raw_snapshot = {
'project_id': '12b0330ec2584a',
'user_id': '158cba1b8c2bb6008e',
'volume': {'availability_zone': 'nova'},
'volume_id': '55614621',
'volume_size': 1,
'id': '343434a2',
'display_name': '11',
'created_at': '2014-12-11T10:10:00',
'status': 'pause',
'deleted': '',
}
usage_info = volume_utils._usage_from_snapshot(
mock.sentinel.context,
raw_snapshot)
expected_snapshot = {
'tenant_id': '12b0330ec2584a',
'user_id': '158cba1b8c2bb6008e',
'availability_zone': 'nova',
'volume_id': '55614621',
'volume_size': 1,
'snapshot_id': '343434a2',
'display_name': '11',
'created_at': '2014-12-11T10:10:00',
'status': 'pause',
'deleted': '',
}
self.assertEqual(expected_snapshot, usage_info)
@mock.patch('cinder.volume.utils._usage_from_consistencygroup')
@mock.patch('cinder.volume.utils.CONF')
@mock.patch('cinder.volume.utils.rpc')
def test_notify_about_consistencygroup_usage(self, mock_rpc,
mock_conf, mock_usage):
mock_conf.host = 'host1'
output = volume_utils.notify_about_consistencygroup_usage(
mock.sentinel.context,
mock.sentinel.consistencygroup,
'test_suffix')
self.assertIsNone(output)
mock_usage.assert_called_once_with(mock.sentinel.context,
mock.sentinel.consistencygroup)
mock_rpc.get_notifier.assert_called_once_with('consistencygroup',
'host1')
mock_rpc.get_notifier.return_value.info.assert_called_once_with(
mock.sentinel.context,
'consistencygroup.test_suffix',
mock_usage.return_value)
@mock.patch('cinder.volume.utils._usage_from_consistencygroup')
@mock.patch('cinder.volume.utils.CONF')
@mock.patch('cinder.volume.utils.rpc')
def test_notify_about_consistencygroup_usage_with_kwargs(self, mock_rpc,
mock_conf,
mock_usage):
mock_conf.host = 'host1'
output = volume_utils.notify_about_consistencygroup_usage(
mock.sentinel.context,
mock.sentinel.consistencygroup,
'test_suffix',
extra_usage_info={'a': 'b', 'c': 'd'},
host='host2')
self.assertIsNone(output)
mock_usage.assert_called_once_with(mock.sentinel.context,
mock.sentinel.consistencygroup,
a='b', c='d')
mock_rpc.get_notifier.assert_called_once_with('consistencygroup',
'host2')
mock_rpc.get_notifier.return_value.info.assert_called_once_with(
mock.sentinel.context,
'consistencygroup.test_suffix',
mock_usage.return_value)
@mock.patch('cinder.volume.utils._usage_from_cgsnapshot')
@mock.patch('cinder.volume.utils.CONF')
@mock.patch('cinder.volume.utils.rpc')
def test_notify_about_cgsnapshot_usage(self, mock_rpc,
mock_conf, mock_usage):
mock_conf.host = 'host1'
output = volume_utils.notify_about_cgsnapshot_usage(
mock.sentinel.context,
mock.sentinel.cgsnapshot,
'test_suffix')
self.assertIsNone(output)
mock_usage.assert_called_once_with(mock.sentinel.context,
mock.sentinel.cgsnapshot)
mock_rpc.get_notifier.assert_called_once_with('cgsnapshot', 'host1')
mock_rpc.get_notifier.return_value.info.assert_called_once_with(
mock.sentinel.context,
'cgsnapshot.test_suffix',
mock_usage.return_value)
@mock.patch('cinder.volume.utils._usage_from_cgsnapshot')
@mock.patch('cinder.volume.utils.CONF')
@mock.patch('cinder.volume.utils.rpc')
def test_notify_about_cgsnapshot_usage_with_kwargs(self, mock_rpc,
mock_conf, mock_usage):
mock_conf.host = 'host1'
output = volume_utils.notify_about_cgsnapshot_usage(
mock.sentinel.context,
mock.sentinel.cgsnapshot,
'test_suffix',
extra_usage_info={'a': 'b', 'c': 'd'},
host='host2')
self.assertIsNone(output)
mock_usage.assert_called_once_with(mock.sentinel.context,
mock.sentinel.cgsnapshot,
a='b', c='d')
mock_rpc.get_notifier.assert_called_once_with('cgsnapshot', 'host2')
mock_rpc.get_notifier.return_value.info.assert_called_once_with(
mock.sentinel.context,
'cgsnapshot.test_suffix',
mock_usage.return_value)
class LVMVolumeDriverTestCase(test.TestCase):
def test_convert_blocksize_option(self):
# Test valid volume_dd_blocksize
bs, count = volume_utils._calculate_count(1024, '10M')
self.assertEqual(bs, '10M')
self.assertEqual(count, 103)
bs, count = volume_utils._calculate_count(1024, '1xBBB')
self.assertEqual(bs, '1M')
self.assertEqual(count, 1024)
# Test 'volume_dd_blocksize' with fraction
bs, count = volume_utils._calculate_count(1024, '1.3M')
self.assertEqual(bs, '1M')
self.assertEqual(count, 1024)
# Test zero-size 'volume_dd_blocksize'
bs, count = volume_utils._calculate_count(1024, '0M')
self.assertEqual(bs, '1M')
self.assertEqual(count, 1024)
# Test negative 'volume_dd_blocksize'
bs, count = volume_utils._calculate_count(1024, '-1M')
self.assertEqual(bs, '1M')
self.assertEqual(count, 1024)
# Test non-digital 'volume_dd_blocksize'
bs, count = volume_utils._calculate_count(1024, 'ABM')
self.assertEqual(bs, '1M')
self.assertEqual(count, 1024)
class OdirectSupportTestCase(test.TestCase):
@mock.patch('cinder.utils.execute')
def test_check_for_odirect_support(self, mock_exec):
output = volume_utils.check_for_odirect_support('/dev/abc', '/dev/def')
self.assertTrue(output)
mock_exec.assert_called_once_with('dd', 'count=0', 'if=/dev/abc',
'of=/dev/def', 'oflag=direct',
run_as_root=True)
mock_exec.reset_mock()
output = volume_utils.check_for_odirect_support('/dev/abc', '/dev/def',
'iflag=direct')
self.assertTrue(output)
mock_exec.assert_called_once_with('dd', 'count=0', 'if=/dev/abc',
'of=/dev/def', 'iflag=direct',
run_as_root=True)
@mock.patch('cinder.utils.execute',
side_effect=processutils.ProcessExecutionError)
def test_check_for_odirect_support_error(self, mock_exec):
output = volume_utils.check_for_odirect_support('/dev/abc', '/dev/def')
self.assertFalse(output)
mock_exec.assert_called_once_with('dd', 'count=0', 'if=/dev/abc',
'of=/dev/def', 'oflag=direct',
run_as_root=True)
class ClearVolumeTestCase(test.TestCase):
@mock.patch('cinder.volume.utils.copy_volume', return_value=None)
@mock.patch('cinder.volume.utils.CONF')
def test_clear_volume_conf(self, mock_conf, mock_copy):
mock_conf.volume_clear = 'zero'
mock_conf.volume_clear_size = 0
mock_conf.volume_dd_blocksize = '1M'
mock_conf.volume_clear_ionice = '-c3'
output = volume_utils.clear_volume(1024, 'volume_path')
self.assertIsNone(output)
mock_copy.assert_called_once_with('/dev/zero', 'volume_path', 1024,
'1M', sync=True,
execute=utils.execute, ionice='-c3',
throttle=None)
@mock.patch('cinder.volume.utils.copy_volume', return_value=None)
@mock.patch('cinder.volume.utils.CONF')
def test_clear_volume_args(self, mock_conf, mock_copy):
mock_conf.volume_clear = 'shred'
mock_conf.volume_clear_size = 0
mock_conf.volume_dd_blocksize = '1M'
mock_conf.volume_clear_ionice = '-c3'
output = volume_utils.clear_volume(1024, 'volume_path', 'zero', 1,
'-c0')
self.assertIsNone(output)
mock_copy.assert_called_once_with('/dev/zero', 'volume_path', 1,
'1M', sync=True,
execute=utils.execute, ionice='-c0',
throttle=None)
@mock.patch('cinder.utils.execute')
@mock.patch('cinder.volume.utils.CONF')
def test_clear_volume_shred(self, mock_conf, mock_exec):
mock_conf.volume_clear = 'shred'
mock_conf.volume_clear_size = 1
mock_conf.volume_clear_ionice = None
output = volume_utils.clear_volume(1024, 'volume_path')
self.assertIsNone(output)
mock_exec.assert_called_once_with(
'shred', '-n3', '-s1MiB', "volume_path", run_as_root=True)
@mock.patch('cinder.utils.execute')
@mock.patch('cinder.volume.utils.CONF')
def test_clear_volume_shred_not_clear_size(self, mock_conf, mock_exec):
mock_conf.volume_clear = 'shred'
mock_conf.volume_clear_size = None
mock_conf.volume_clear_ionice = None
output = volume_utils.clear_volume(1024, 'volume_path')
self.assertIsNone(output)
mock_exec.assert_called_once_with(
'shred', '-n3', "volume_path", run_as_root=True)
@mock.patch('cinder.volume.utils.CONF')
def test_clear_volume_invalid_opt(self, mock_conf):
mock_conf.volume_clear = 'non_existent_volume_clearer'
mock_conf.volume_clear_size = 0
mock_conf.volume_clear_ionice = None
self.assertRaises(exception.InvalidConfigurationValue,
volume_utils.clear_volume,
1024, "volume_path")
class CopyVolumeTestCase(test.TestCase):
@mock.patch('cinder.volume.utils._calculate_count',
return_value=(1234, 5678))
@mock.patch('cinder.volume.utils.check_for_odirect_support',
return_value=True)
@mock.patch('cinder.utils.execute')
@mock.patch('cinder.volume.utils.CONF')
def test_copy_volume_dd_iflag_and_oflag(self, mock_conf, mock_exec,
mock_support, mock_count):
fake_throttle = throttling.Throttle(['fake_throttle'])
output = volume_utils.copy_volume('/dev/zero', '/dev/null', 1024, 1,
sync=True, execute=utils.execute,
ionice=None, throttle=fake_throttle)
self.assertIsNone(output)
mock_exec.assert_called_once_with('fake_throttle', 'dd',
'if=/dev/zero',
'of=/dev/null', 'count=5678',
'bs=1234', 'iflag=direct',
'oflag=direct', run_as_root=True)
mock_exec.reset_mock()
output = volume_utils.copy_volume('/dev/zero', '/dev/null', 1024, 1,
sync=False, execute=utils.execute,
ionice=None, throttle=fake_throttle)
self.assertIsNone(output)
mock_exec.assert_called_once_with('fake_throttle', 'dd',
'if=/dev/zero',
'of=/dev/null', 'count=5678',
'bs=1234', 'iflag=direct',
'oflag=direct', run_as_root=True)
@mock.patch('cinder.volume.utils._calculate_count',
return_value=(1234, 5678))
@mock.patch('cinder.volume.utils.check_for_odirect_support',
return_value=False)
@mock.patch('cinder.utils.execute')
def test_copy_volume_dd_no_iflag_or_oflag(self, mock_exec,
mock_support, mock_count):
fake_throttle = throttling.Throttle(['fake_throttle'])
output = volume_utils.copy_volume('/dev/zero', '/dev/null', 1024, 1,
sync=True, execute=utils.execute,
ionice=None, throttle=fake_throttle)
self.assertIsNone(output)
mock_exec.assert_called_once_with('fake_throttle', 'dd',
'if=/dev/zero',
'of=/dev/null', 'count=5678',
'bs=1234', 'conv=fdatasync',
run_as_root=True)
mock_exec.reset_mock()
output = volume_utils.copy_volume('/dev/zero', '/dev/null', 1024, 1,
sync=False, execute=utils.execute,
ionice=None, throttle=fake_throttle)
self.assertIsNone(output)
mock_exec.assert_called_once_with('fake_throttle', 'dd',
'if=/dev/zero',
'of=/dev/null', 'count=5678',
'bs=1234', run_as_root=True)
@mock.patch('cinder.volume.utils._calculate_count',
return_value=(1234, 5678))
@mock.patch('cinder.volume.utils.check_for_odirect_support',
return_value=False)
@mock.patch('cinder.utils.execute')
def test_copy_volume_dd_no_throttle(self, mock_exec, mock_support,
mock_count):
output = volume_utils.copy_volume('/dev/zero', '/dev/null', 1024, 1,
sync=True, execute=utils.execute,
ionice=None)
self.assertIsNone(output)
mock_exec.assert_called_once_with('dd', 'if=/dev/zero', 'of=/dev/null',
'count=5678', 'bs=1234',
'conv=fdatasync', run_as_root=True)
@mock.patch('cinder.volume.utils._calculate_count',
return_value=(1234, 5678))
@mock.patch('cinder.volume.utils.check_for_odirect_support',
return_value=False)
@mock.patch('cinder.utils.execute')
def test_copy_volume_dd_with_ionice(self, mock_exec,
mock_support, mock_count):
output = volume_utils.copy_volume('/dev/zero', '/dev/null', 1024, 1,
sync=True, execute=utils.execute,
ionice='-c3')
self.assertIsNone(output)
mock_exec.assert_called_once_with('ionice', '-c3', 'dd',
'if=/dev/zero', 'of=/dev/null',
'count=5678', 'bs=1234',
'conv=fdatasync', run_as_root=True)
class VolumeUtilsTestCase(test.TestCase):
def test_null_safe_str(self):
self.assertEqual('', volume_utils.null_safe_str(None))
self.assertEqual('', volume_utils.null_safe_str(False))
self.assertEqual('', volume_utils.null_safe_str(0))
self.assertEqual('', volume_utils.null_safe_str([]))
self.assertEqual('', volume_utils.null_safe_str(()))
self.assertEqual('', volume_utils.null_safe_str({}))
self.assertEqual('', volume_utils.null_safe_str(set()))
self.assertEqual('a', volume_utils.null_safe_str('a'))
self.assertEqual('1', volume_utils.null_safe_str(1))
self.assertEqual('True', volume_utils.null_safe_str(True))
@mock.patch('cinder.utils.get_root_helper')
@mock.patch('cinder.brick.local_dev.lvm.LVM.supports_thin_provisioning')
def test_supports_thin_provisioning(self, mock_supports_thin, mock_helper):
self.assertEqual(mock_supports_thin.return_value,
volume_utils.supports_thin_provisioning())
mock_helper.assert_called_once_with()
@mock.patch('cinder.utils.get_root_helper')
@mock.patch('cinder.brick.local_dev.lvm.LVM.get_all_physical_volumes')
def test_get_all_physical_volumes(self, mock_get_vols, mock_helper):
self.assertEqual(mock_get_vols.return_value,
volume_utils.get_all_physical_volumes())
mock_helper.assert_called_once_with()
@mock.patch('cinder.utils.get_root_helper')
@mock.patch('cinder.brick.local_dev.lvm.LVM.get_all_volume_groups')
def test_get_all_volume_groups(self, mock_get_groups, mock_helper):
self.assertEqual(mock_get_groups.return_value,
volume_utils.get_all_volume_groups())
mock_helper.assert_called_once_with()
def test_generate_password(self):
password = volume_utils.generate_password()
self.assertTrue(any(c for c in password if c in '23456789'))
self.assertTrue(any(c for c in password
if c in 'abcdefghijkmnopqrstuvwxyz'))
self.assertTrue(any(c for c in password
if c in 'ABCDEFGHJKLMNPQRSTUVWXYZ'))
self.assertEqual(16, len(password))
self.assertEqual(10, len(volume_utils.generate_password(10)))
@mock.patch('cinder.volume.utils.generate_password')
def test_generate_username(self, mock_gen_pass):
output = volume_utils.generate_username()
self.assertEqual(mock_gen_pass.return_value, output)
def test_extract_host(self):
host = 'Host'
# default level is 'backend'
self.assertEqual(
volume_utils.extract_host(host), 'Host')
self.assertEqual(
volume_utils.extract_host(host, 'host'), 'Host')
self.assertEqual(
volume_utils.extract_host(host, 'backend'), 'Host')
# default_pool_name doesn't work for level other than 'pool'
self.assertEqual(
volume_utils.extract_host(host, 'host', True), 'Host')
self.assertEqual(
volume_utils.extract_host(host, 'host', False), 'Host')
self.assertEqual(
volume_utils.extract_host(host, 'backend', True), 'Host')
self.assertEqual(
volume_utils.extract_host(host, 'backend', False), 'Host')
self.assertEqual(
volume_utils.extract_host(host, 'pool'), None)
self.assertEqual(
volume_utils.extract_host(host, 'pool', True), '_pool0')
host = 'Host@Backend'
self.assertEqual(
volume_utils.extract_host(host), 'Host@Backend')
self.assertEqual(
volume_utils.extract_host(host, 'host'), 'Host')
self.assertEqual(
volume_utils.extract_host(host, 'backend'), 'Host@Backend')
self.assertEqual(
volume_utils.extract_host(host, 'pool'), None)
self.assertEqual(
volume_utils.extract_host(host, 'pool', True), '_pool0')
host = 'Host@Backend#Pool'
self.assertEqual(
volume_utils.extract_host(host), 'Host@Backend')
self.assertEqual(
volume_utils.extract_host(host, 'host'), 'Host')
self.assertEqual(
volume_utils.extract_host(host, 'backend'), 'Host@Backend')
self.assertEqual(
volume_utils.extract_host(host, 'pool'), 'Pool')
self.assertEqual(
volume_utils.extract_host(host, 'pool', True), 'Pool')
host = 'Host#Pool'
self.assertEqual(
volume_utils.extract_host(host), 'Host')
self.assertEqual(
volume_utils.extract_host(host, 'host'), 'Host')
self.assertEqual(
volume_utils.extract_host(host, 'backend'), 'Host')
self.assertEqual(
volume_utils.extract_host(host, 'pool'), 'Pool')
self.assertEqual(
volume_utils.extract_host(host, 'pool', True), 'Pool')
def test_append_host(self):
host = 'Host'
pool = 'Pool'
expected = 'Host#Pool'
self.assertEqual(expected,
volume_utils.append_host(host, pool))
pool = None
expected = 'Host'
self.assertEqual(expected,
volume_utils.append_host(host, pool))
host = None
pool = 'pool'
expected = None
self.assertEqual(expected,
volume_utils.append_host(host, pool))
host = None
pool = None
expected = None
self.assertEqual(expected,
volume_utils.append_host(host, pool))