nova/nova/tests/virt/xenapi/test_volume_utils.py

109 lines
3.8 KiB
Python

# Copyright 2013 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.
import mock
from eventlet import greenthread
from nova.tests.virt.xenapi import stubs
from nova.virt.xenapi import volume_utils
class SROps(stubs.XenAPITestBaseNoDB):
def test_find_sr_valid_uuid(self):
self.session = mock.Mock()
self.session.call_xenapi.return_value = 'sr_ref'
self.assertEqual(volume_utils.find_sr_by_uuid(self.session,
'sr_uuid'),
'sr_ref')
def test_find_sr_invalid_uuid(self):
class UUIDException(Exception):
details = ["UUID_INVALID", "", "", ""]
self.session = mock.Mock()
self.session.XenAPI.Failure = UUIDException
self.session.call_xenapi.side_effect = UUIDException
self.assertEqual(volume_utils.find_sr_by_uuid(self.session,
'sr_uuid'),
None)
class ISCSIParametersTestCase(stubs.XenAPITestBaseNoDB):
def test_target_host(self):
self.assertEqual(volume_utils._get_target_host('host:port'),
'host')
self.assertEqual(volume_utils._get_target_host('host'),
'host')
# There is no default value
self.assertEqual(volume_utils._get_target_host(':port'),
None)
self.assertEqual(volume_utils._get_target_host(None),
None)
def test_target_port(self):
self.assertEqual(volume_utils._get_target_port('host:port'),
'port')
self.assertEqual(volume_utils._get_target_port('host'),
'3260')
class IntroduceTestCase(stubs.XenAPITestBaseNoDB):
@mock.patch.object(volume_utils, '_get_vdi_ref')
@mock.patch.object(greenthread, 'sleep')
def test_introduce_vdi_retry(self, mock_sleep, mock_get_vdi_ref):
def fake_get_vdi_ref(session, sr_ref, vdi_uuid, target_lun):
fake_get_vdi_ref.call_count += 1
if fake_get_vdi_ref.call_count == 2:
return 'vdi_ref'
def fake_call_xenapi(method, *args):
if method == 'SR.scan':
return
elif method == 'VDI.get_record':
return {'managed': 'true'}
session = mock.Mock()
session.call_xenapi.side_effect = fake_call_xenapi
mock_get_vdi_ref.side_effect = fake_get_vdi_ref
fake_get_vdi_ref.call_count = 0
self.assertEqual(volume_utils.introduce_vdi(session, 'sr_ref'),
'vdi_ref')
mock_sleep.assert_called_once_with(20)
@mock.patch.object(volume_utils, '_get_vdi_ref')
@mock.patch.object(greenthread, 'sleep')
def test_introduce_vdi_exception(self, mock_sleep, mock_get_vdi_ref):
def fake_call_xenapi(method, *args):
if method == 'SR.scan':
return
elif method == 'VDI.get_record':
return {'managed': 'true'}
session = mock.Mock()
session.call_xenapi.side_effect = fake_call_xenapi
mock_get_vdi_ref.return_value = None
self.assertRaises(volume_utils.StorageError,
volume_utils.introduce_vdi, session, 'sr_ref')
mock_sleep.assert_called_once_with(20)