238 lines
10 KiB
Python
238 lines
10 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2013 Cloudbase Solutions Srl
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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 nova import test
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from nova.virt.hyperv import constants
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from nova.virt.hyperv import vhdutilsv2
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class VHDUtilsV2TestCase(test.NoDBTestCase):
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"""Unit tests for the Hyper-V VHDUtilsV2 class."""
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_FAKE_VHD_PATH = "C:\\fake_path.vhdx"
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_FAKE_PARENT_VHD_PATH = "C:\\fake_parent_path.vhdx"
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_FAKE_FORMAT = 3
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_FAKE_MAK_INTERNAL_SIZE = 1 << 30
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_FAKE_TYPE = 3
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_FAKE_JOB_PATH = 'fake_job_path'
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_FAKE_RET_VAL = 0
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_FAKE_VHD_FORMAT = 'vhdx'
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_FAKE_BLOCK_SIZE = 33554432
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_FAKE_LOG_SIZE = 1048576
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_FAKE_LOGICAL_SECTOR_SIZE = 4096
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_FAKE_METADATA_SIZE = 1048576
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def setUp(self):
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self._vhdutils = vhdutilsv2.VHDUtilsV2()
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self._vhdutils._conn = mock.MagicMock()
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self._vhdutils._vmutils = mock.MagicMock()
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self._vhdutils.get_vhd_format = mock.MagicMock(
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return_value=self._FAKE_VHD_FORMAT)
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self._fake_file_handle = mock.MagicMock()
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self._fake_vhd_info_xml = (
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'<INSTANCE CLASSNAME="Msvm_VirtualHardDiskSettingData">'
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'<PROPERTY NAME="BlockSize" TYPE="uint32">'
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'<VALUE>33554432</VALUE>'
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'</PROPERTY>'
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'<PROPERTY NAME="Caption" TYPE="string">'
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'<VALUE>Virtual Hard Disk Setting Data</VALUE>'
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'</PROPERTY>'
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'<PROPERTY NAME="Description" TYPE="string">'
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'<VALUE>Setting Data for a Virtual Hard Disk.</VALUE>'
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'</PROPERTY>'
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'<PROPERTY NAME="ElementName" TYPE="string">'
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'<VALUE>fake_path.vhdx</VALUE>'
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'</PROPERTY>'
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'<PROPERTY NAME="Format" TYPE="uint16">'
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'<VALUE>%(format)s</VALUE>'
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'</PROPERTY>'
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'<PROPERTY NAME="InstanceID" TYPE="string">'
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'<VALUE>52794B89-AC06-4349-AC57-486CAAD52F69</VALUE>'
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'</PROPERTY>'
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'<PROPERTY NAME="LogicalSectorSize" TYPE="uint32">'
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'<VALUE>512</VALUE>'
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'</PROPERTY>'
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'<PROPERTY NAME="MaxInternalSize" TYPE="uint64">'
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'<VALUE>%(max_internal_size)s</VALUE>'
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'</PROPERTY>'
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'<PROPERTY NAME="ParentPath" TYPE="string">'
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'<VALUE>%(parent_path)s</VALUE>'
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'</PROPERTY>'
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'<PROPERTY NAME="Path" TYPE="string">'
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'<VALUE>%(path)s</VALUE>'
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'</PROPERTY>'
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'<PROPERTY NAME="PhysicalSectorSize" TYPE="uint32">'
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'<VALUE>4096</VALUE>'
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'</PROPERTY>'
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'<PROPERTY NAME="Type" TYPE="uint16">'
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'<VALUE>%(type)s</VALUE>'
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'</PROPERTY>'
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'</INSTANCE>' %
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{'path': self._FAKE_VHD_PATH,
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'parent_path': self._FAKE_PARENT_VHD_PATH,
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'format': self._FAKE_FORMAT,
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'max_internal_size': self._FAKE_MAK_INTERNAL_SIZE,
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'type': self._FAKE_TYPE})
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super(VHDUtilsV2TestCase, self).setUp()
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def test_get_vhd_info(self):
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mock_img_svc = self._vhdutils._conn.Msvm_ImageManagementService()[0]
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mock_img_svc.GetVirtualHardDiskSettingData.return_value = (
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self._FAKE_JOB_PATH, self._FAKE_RET_VAL, self._fake_vhd_info_xml)
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vhd_info = self._vhdutils.get_vhd_info(self._FAKE_VHD_PATH)
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self.assertEquals(self._FAKE_VHD_PATH, vhd_info['Path'])
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self.assertEquals(self._FAKE_PARENT_VHD_PATH, vhd_info['ParentPath'])
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self.assertEquals(self._FAKE_FORMAT, vhd_info['Format'])
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self.assertEquals(self._FAKE_MAK_INTERNAL_SIZE,
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vhd_info['MaxInternalSize'])
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self.assertEquals(self._FAKE_TYPE, vhd_info['Type'])
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def test_create_dynamic_vhd(self):
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self._vhdutils.get_vhd_info = mock.MagicMock(
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return_value={'Format': self._FAKE_FORMAT})
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mock_img_svc = self._vhdutils._conn.Msvm_ImageManagementService()[0]
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mock_img_svc.CreateVirtualHardDisk.return_value = (self._FAKE_JOB_PATH,
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self._FAKE_RET_VAL)
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self._vhdutils.create_dynamic_vhd(self._FAKE_VHD_PATH,
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self._FAKE_MAK_INTERNAL_SIZE,
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constants.DISK_FORMAT_VHDX)
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self.assertTrue(mock_img_svc.CreateVirtualHardDisk.called)
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def test_create_differencing_vhd(self):
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self._vhdutils.get_vhd_info = mock.MagicMock(
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return_value={'ParentPath': self._FAKE_PARENT_VHD_PATH,
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'Format': self._FAKE_FORMAT})
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mock_img_svc = self._vhdutils._conn.Msvm_ImageManagementService()[0]
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mock_img_svc.CreateVirtualHardDisk.return_value = (self._FAKE_JOB_PATH,
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self._FAKE_RET_VAL)
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self._vhdutils.create_differencing_vhd(self._FAKE_VHD_PATH,
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self._FAKE_PARENT_VHD_PATH)
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self.assertTrue(mock_img_svc.CreateVirtualHardDisk.called)
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def test_reconnect_parent_vhd(self):
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mock_img_svc = self._vhdutils._conn.Msvm_ImageManagementService()[0]
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self._vhdutils._get_vhd_info_xml = mock.MagicMock(
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return_value=self._fake_vhd_info_xml)
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mock_img_svc.SetVirtualHardDiskSettingData.return_value = (
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self._FAKE_JOB_PATH, self._FAKE_RET_VAL)
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self._vhdutils.reconnect_parent_vhd(self._FAKE_VHD_PATH,
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self._FAKE_PARENT_VHD_PATH)
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mock_img_svc.SetVirtualHardDiskSettingData.assert_called_once_with(
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VirtualDiskSettingData=self._fake_vhd_info_xml)
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def test_resize_vhd(self):
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mock_img_svc = self._vhdutils._conn.Msvm_ImageManagementService()[0]
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mock_img_svc.ResizeVirtualHardDisk.return_value = (self._FAKE_JOB_PATH,
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self._FAKE_RET_VAL)
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self._vhdutils.get_internal_vhd_size_by_file_size = mock.MagicMock(
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return_value=self._FAKE_MAK_INTERNAL_SIZE)
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self._vhdutils.resize_vhd(self._FAKE_VHD_PATH,
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self._FAKE_MAK_INTERNAL_SIZE)
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mock_img_svc.ResizeVirtualHardDisk.assert_called_once_with(
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Path=self._FAKE_VHD_PATH,
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MaxInternalSize=self._FAKE_MAK_INTERNAL_SIZE)
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self.mock_get = self._vhdutils.get_internal_vhd_size_by_file_size
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self.mock_get.assert_called_once_with(self._FAKE_VHD_PATH,
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self._FAKE_MAK_INTERNAL_SIZE)
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def test_get_vhdx_internal_size(self):
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self._vhdutils.get_vhd_info = mock.MagicMock(
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return_value={'ParentPath': self._FAKE_PARENT_VHD_PATH,
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'Format': self._FAKE_FORMAT,
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'BlockSize': self._FAKE_BLOCK_SIZE,
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'LogicalSectorSize': self._FAKE_LOGICAL_SECTOR_SIZE,
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'Type': self._FAKE_TYPE})
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self._vhdutils._get_vhdx_log_size = mock.MagicMock(
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return_value=self._FAKE_LOG_SIZE)
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self._vhdutils._get_vhdx_metadata_size_and_offset = mock.MagicMock(
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return_value=(self._FAKE_METADATA_SIZE, 1024))
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self._vhdutils._get_vhdx_block_size = mock.MagicMock(
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return_value=self._FAKE_BLOCK_SIZE)
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file_mock = mock.MagicMock()
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with mock.patch('__builtin__.open', file_mock):
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internal_size = (
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self._vhdutils.get_internal_vhd_size_by_file_size(
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self._FAKE_VHD_PATH, self._FAKE_MAK_INTERNAL_SIZE))
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self.assertEqual(self._FAKE_MAK_INTERNAL_SIZE - self._FAKE_BLOCK_SIZE,
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internal_size)
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def test_get_vhdx_current_header(self):
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VHDX_HEADER_OFFSETS = [64 * 1024, 128 * 1024]
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fake_sequence_numbers = ['\x01\x00\x00\x00\x00\x00\x00\x00',
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'\x02\x00\x00\x00\x00\x00\x00\x00']
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self._fake_file_handle.read = mock.MagicMock(
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side_effect=fake_sequence_numbers)
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offset = self._vhdutils._get_vhdx_current_header_offset(
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self._fake_file_handle)
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self.assertEqual(offset, VHDX_HEADER_OFFSETS[1])
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def test_get_vhdx_metadata_size(self):
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fake_metadata_offset = '\x01\x00\x00\x00\x00\x00\x00\x00'
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fake_metadata_size = '\x01\x00\x00\x00'
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self._fake_file_handle.read = mock.MagicMock(
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side_effect=[fake_metadata_offset, fake_metadata_size])
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metadata_size, metadata_offset = (
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self._vhdutils._get_vhdx_metadata_size_and_offset(
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self._fake_file_handle))
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self.assertEqual(metadata_size, 1)
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self.assertEqual(metadata_offset, 1)
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def test_get_block_size(self):
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self._vhdutils._get_vhdx_metadata_size_and_offset = mock.MagicMock(
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return_value=(self._FAKE_METADATA_SIZE, 1024))
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fake_block_size = '\x01\x00\x00\x00'
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self._fake_file_handle.read = mock.MagicMock(
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return_value=fake_block_size)
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block_size = self._vhdutils._get_vhdx_block_size(
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self._fake_file_handle)
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self.assertEqual(block_size, 1)
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def test_get_log_size(self):
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fake_current_header_offset = 64 * 1024
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self._vhdutils._get_vhdx_current_header_offset = mock.MagicMock(
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return_value=fake_current_header_offset)
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fake_log_size = '\x01\x00\x00\x00'
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self._fake_file_handle.read = mock.MagicMock(
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return_value=fake_log_size)
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log_size = self._vhdutils._get_vhdx_log_size(self._fake_file_handle)
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self.assertEqual(log_size, 1)
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