132 lines
5.2 KiB
Python
132 lines
5.2 KiB
Python
# 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 vhdutils
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from nova.virt.hyperv import vmutils
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class VHDUtilsTestCase(test.NoDBTestCase):
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"""Unit tests for the Hyper-V VHDUtils class."""
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_FAKE_VHD_PATH = "C:\\fake_path.vhdx"
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_FAKE_FORMAT = 3
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_FAKE_MAK_INTERNAL_SIZE = 1000
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_FAKE_JOB_PATH = 'fake_job_path'
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_FAKE_RET_VAL = 0
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def setUp(self):
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self._vhdutils = vhdutils.VHDUtils()
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self._vhdutils._conn = mock.MagicMock()
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self._vhdutils._vmutils = mock.MagicMock()
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super(VHDUtilsTestCase, self).setUp()
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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.CreateDynamicVirtualHardDisk.return_value = (
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self._FAKE_JOB_PATH, 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_VHD)
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mock_img_svc.CreateDynamicVirtualHardDisk.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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def test_get_internal_vhd_size_by_file_size_fixed(self):
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vhdutil = vhdutils.VHDUtils()
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root_vhd_size = 1 * 1024 ** 3
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vhdutil.get_vhd_info = mock.MagicMock()
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vhdutil.get_vhd_info.return_value = {'Type': constants.VHD_TYPE_FIXED}
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real_size = vhdutil.get_internal_vhd_size_by_file_size(None,
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root_vhd_size)
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expected_vhd_size = 1 * 1024 ** 3 - 512
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self.assertEqual(expected_vhd_size, real_size)
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def test_get_internal_vhd_size_by_file_size_dynamic(self):
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vhdutil = vhdutils.VHDUtils()
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root_vhd_size = 20 * 1024 ** 3
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vhdutil.get_vhd_info = mock.MagicMock()
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vhdutil.get_vhd_info.return_value = {'Type':
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constants.VHD_TYPE_DYNAMIC}
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vhdutil._get_vhd_dynamic_blk_size = mock.MagicMock()
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vhdutil._get_vhd_dynamic_blk_size.return_value = 2097152
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real_size = vhdutil.get_internal_vhd_size_by_file_size(None,
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root_vhd_size)
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expected_vhd_size = 20 * 1024 ** 3 - 43008
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self.assertEqual(expected_vhd_size, real_size)
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def test_get_internal_vhd_size_by_file_size_unsupported(self):
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vhdutil = vhdutils.VHDUtils()
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root_vhd_size = 20 * 1024 ** 3
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vhdutil.get_vhd_info = mock.MagicMock()
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vhdutil.get_vhd_info.return_value = {'Type': 5}
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self.assertRaises(vmutils.HyperVException,
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vhdutil.get_internal_vhd_size_by_file_size,
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None, root_vhd_size)
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def test_get_vhd_format_vhdx(self):
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with mock.patch('nova.virt.hyperv.vhdutils.open',
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mock.mock_open(read_data=vhdutils.VHDX_SIGNATURE),
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create=True):
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format = self._vhdutils.get_vhd_format(self._FAKE_VHD_PATH)
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self.assertEqual(constants.DISK_FORMAT_VHDX, format)
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def test_get_vhd_format_vhd(self):
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with mock.patch('nova.virt.hyperv.vhdutils.open',
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mock.mock_open(read_data=vhdutils.VHD_SIGNATURE),
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create=True) as mock_open:
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f = mock_open.return_value
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f.tell.return_value = 1024
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format = self._vhdutils.get_vhd_format(self._FAKE_VHD_PATH)
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self.assertEqual(constants.DISK_FORMAT_VHD, format)
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def test_get_vhd_format_invalid_format(self):
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with mock.patch('nova.virt.hyperv.vhdutils.open',
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mock.mock_open(read_data='invalid'),
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create=True) as mock_open:
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f = mock_open.return_value
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f.tell.return_value = 1024
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self.assertRaises(vmutils.HyperVException,
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self._vhdutils.get_vhd_format,
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self._FAKE_VHD_PATH)
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def test_get_vhd_format_zero_length_file(self):
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with mock.patch('nova.virt.hyperv.vhdutils.open',
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mock.mock_open(read_data=''),
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create=True) as mock_open:
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f = mock_open.return_value
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f.tell.return_value = 0
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self.assertRaises(vmutils.HyperVException,
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self._vhdutils.get_vhd_format,
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self._FAKE_VHD_PATH)
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f.seek.assert_called_once_with(0, 2)
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