189 lines
7.7 KiB
Python
189 lines
7.7 KiB
Python
# Copyright 2014 Cloudbase Solutions Srl
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#
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import mock
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from hyperv.nova import basevolumeutils
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from hyperv.tests import test
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def _exception_thrower():
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raise Exception("Testing exception handling.")
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class BaseVolumeUtilsTestCase(test.NoDBTestCase):
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"""Unit tests for the Hyper-V BaseVolumeUtils class."""
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_FAKE_COMPUTER_NAME = "fake_computer_name"
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_FAKE_DOMAIN_NAME = "fake_domain_name"
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_FAKE_INITIATOR_NAME = "fake_initiator_name"
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_FAKE_INITIATOR_IQN_NAME = "iqn.1991-05.com.microsoft:fake_computer_name"
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_FAKE_DISK_PATH = 'fake_path DeviceID="123\\\\2"'
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_FAKE_MOUNT_DEVICE = '/dev/fake/mount'
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_FAKE_DEVICE_NAME = '/dev/fake/path'
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_FAKE_SWAP = {'device_name': _FAKE_DISK_PATH}
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def setUp(self):
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self._volutils = basevolumeutils.BaseVolumeUtils()
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self._volutils._conn_wmi = mock.MagicMock()
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self._volutils._conn_cimv2 = mock.MagicMock()
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super(BaseVolumeUtilsTestCase, self).setUp()
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def test_get_iscsi_initiator_ok(self):
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self._check_get_iscsi_initiator(
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mock.MagicMock(return_value=mock.sentinel.FAKE_KEY),
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self._FAKE_INITIATOR_NAME)
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def test_get_iscsi_initiator_exception(self):
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initiator_name = "%(iqn)s.%(domain)s" % {
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'iqn': self._FAKE_INITIATOR_IQN_NAME,
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'domain': self._FAKE_DOMAIN_NAME
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}
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self._check_get_iscsi_initiator(_exception_thrower, initiator_name)
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def _check_get_iscsi_initiator(self, winreg_method, expected):
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mock_computer = mock.MagicMock()
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mock_computer.name = self._FAKE_COMPUTER_NAME
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mock_computer.Domain = self._FAKE_DOMAIN_NAME
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self._volutils._conn_cimv2.Win32_ComputerSystem.return_value = [
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mock_computer]
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with mock.patch.object(basevolumeutils,
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'winreg', create=True) as mock_winreg:
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mock_winreg.OpenKey = winreg_method
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mock_winreg.QueryValueEx = mock.MagicMock(return_value=[expected])
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initiator_name = self._volutils.get_iscsi_initiator()
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self.assertEqual(expected, initiator_name)
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@mock.patch.object(basevolumeutils, 'driver')
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def test_volume_in_mapping(self, mock_driver):
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mock_driver.block_device_info_get_mapping.return_value = [
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{'mount_device': self._FAKE_MOUNT_DEVICE}]
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mock_driver.block_device_info_get_swap = mock.MagicMock(
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return_value=self._FAKE_SWAP)
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mock_driver.block_device_info_get_ephemerals = mock.MagicMock(
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return_value=[{'device_name': self._FAKE_DEVICE_NAME}])
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mock_driver.swap_is_usable = mock.MagicMock(return_value=True)
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self.assertTrue(self._volutils.volume_in_mapping(
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self._FAKE_MOUNT_DEVICE, mock.sentinel.FAKE_BLOCK_DEVICE_INFO))
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def test_get_drive_number_from_disk_path(self):
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fake_disk_path = (
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'\\\\WIN-I5BTVHOIFGK\\root\\virtualization\\v2:Msvm_DiskDrive.'
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'CreationClassName="Msvm_DiskDrive",DeviceID="Microsoft:353B3BE8-'
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'310C-4cf4-839E-4E1B14616136\\\\1",SystemCreationClassName='
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'"Msvm_ComputerSystem",SystemName="WIN-I5BTVHOIFGK"')
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expected_disk_number = 1
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ret_val = self._volutils._get_drive_number_from_disk_path(
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fake_disk_path)
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self.assertEqual(expected_disk_number, ret_val)
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def test_get_drive_number_not_found(self):
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fake_disk_path = 'fake_disk_path'
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ret_val = self._volutils._get_drive_number_from_disk_path(
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fake_disk_path)
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self.assertFalse(ret_val)
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@mock.patch.object(basevolumeutils.BaseVolumeUtils,
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"_get_drive_number_from_disk_path")
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def test_get_session_id_from_mounted_disk(self, mock_get_session_id):
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mock_get_session_id.return_value = mock.sentinel.FAKE_DEVICE_NUMBER
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mock_initiator_session = self._create_initiator_session()
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mock_ses_class = self._volutils._conn_wmi.MSiSCSIInitiator_SessionClass
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mock_ses_class.return_value = [mock_initiator_session]
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session_id = self._volutils.get_session_id_from_mounted_disk(
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self._FAKE_DISK_PATH)
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self.assertEqual(mock.sentinel.FAKE_SESSION_ID, session_id)
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def test_get_devices_for_target(self):
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init_session = self._create_initiator_session()
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mock_ses_class = self._volutils._conn_wmi.MSiSCSIInitiator_SessionClass
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mock_ses_class.return_value = [init_session]
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devices = self._volutils._get_devices_for_target(
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mock.sentinel.FAKE_IQN)
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self.assertEqual(init_session.Devices, devices)
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def test_get_devices_for_target_not_found(self):
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mock_ses_class = self._volutils._conn_wmi.MSiSCSIInitiator_SessionClass
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mock_ses_class.return_value = []
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devices = self._volutils._get_devices_for_target(
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mock.sentinel.FAKE_IQN)
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self.assertEqual(0, len(devices))
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@mock.patch.object(basevolumeutils.BaseVolumeUtils,
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'_get_devices_for_target')
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def test_get_device_number_for_target(self, fake_get_devices):
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init_session = self._create_initiator_session()
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fake_get_devices.return_value = init_session.Devices
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mock_ses_class = self._volutils._conn_wmi.MSiSCSIInitiator_SessionClass
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mock_ses_class.return_value = [init_session]
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device_number = self._volutils.get_device_number_for_target(
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mock.sentinel.FAKE_IQN, mock.sentinel.FAKE_LUN)
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self.assertEqual(mock.sentinel.FAKE_DEVICE_NUMBER, device_number)
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@mock.patch.object(basevolumeutils.BaseVolumeUtils,
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'_get_devices_for_target')
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def test_get_target_lun_count(self, fake_get_devices):
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init_session = self._create_initiator_session()
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# Only disk devices are being counted.
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disk_device = mock.Mock(DeviceType=self._volutils._FILE_DEVICE_DISK)
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init_session.Devices.append(disk_device)
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fake_get_devices.return_value = init_session.Devices
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lun_count = self._volutils.get_target_lun_count(
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mock.sentinel.FAKE_IQN)
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self.assertEqual(1, lun_count)
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@mock.patch.object(basevolumeutils.BaseVolumeUtils,
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"_get_drive_number_from_disk_path")
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def test_get_target_from_disk_path(self, mock_get_session_id):
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mock_get_session_id.return_value = mock.sentinel.FAKE_DEVICE_NUMBER
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init_sess = self._create_initiator_session()
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mock_ses_class = self._volutils._conn_wmi.MSiSCSIInitiator_SessionClass
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mock_ses_class.return_value = [init_sess]
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(target_name, scsi_lun) = self._volutils.get_target_from_disk_path(
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self._FAKE_DISK_PATH)
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self.assertEqual(mock.sentinel.FAKE_TARGET_NAME, target_name)
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self.assertEqual(mock.sentinel.FAKE_LUN, scsi_lun)
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def _create_initiator_session(self):
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device = mock.MagicMock()
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device.ScsiLun = mock.sentinel.FAKE_LUN
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device.DeviceNumber = mock.sentinel.FAKE_DEVICE_NUMBER
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device.TargetName = mock.sentinel.FAKE_TARGET_NAME
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init_session = mock.MagicMock()
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init_session.Devices = [device]
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init_session.SessionId = mock.sentinel.FAKE_SESSION_ID
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return init_session
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