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# Copyright 2019 Aptira Pty Ltd
# 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.
from unittest import mock
import nova.privsep.qemu
from nova import test
from nova.tests import fixtures
class QemuTestCase(test.NoDBTestCase):
"""Test qemu related utility methods."""
def setUp(self):
super(QemuTestCase, self).setUp()
self.useFixture(fixtures.PrivsepFixture())
@mock.patch('oslo_concurrency.processutils.execute')
@mock.patch('nova.privsep.utils.supports_direct_io')
def _test_convert_image(self, meth, mock_supports_direct_io, mock_execute):
mock_supports_direct_io.return_value = True
meth('/fake/source', '/fake/destination', 'informat', 'outformat',
'/fake/instances/path', compress=True)
mock_execute.assert_called_with(
'qemu-img', 'convert', '-t', 'none', '-O', 'outformat',
'-f', 'informat', '-c', '/fake/source', '/fake/destination')
mock_supports_direct_io.reset_mock()
mock_execute.reset_mock()
mock_supports_direct_io.return_value = False
meth('/fake/source', '/fake/destination', 'informat', 'outformat',
'/fake/instances/path', compress=True)
mock_execute.assert_called_with(
'qemu-img', 'convert', '-t', 'writeback', '-O', 'outformat',
'-f', 'informat', '-c', '/fake/source', '/fake/destination')
def test_convert_image(self):
self._test_convert_image(nova.privsep.qemu.convert_image)
def test_convert_image_unprivileged(self):
self._test_convert_image(nova.privsep.qemu.unprivileged_convert_image)
@mock.patch('oslo_concurrency.processutils.execute')
@mock.patch('os.path.isdir')
def _test_qemu_img_info(self, method, mock_isdir, mock_execute):
mock_isdir.return_value = False
mock_execute.return_value = (mock.sentinel.out, None)
expected_cmd = (
'env', 'LC_ALL=C', 'LANG=C', 'qemu-img', 'info',
mock.sentinel.path, '--force-share', '--output=json', '-f',
mock.sentinel.format)
# Assert that the output from processutils is returned
self.assertEqual(
mock.sentinel.out,
method(mock.sentinel.path, format=mock.sentinel.format))
# Assert that the expected command is used
mock_execute.assert_called_once_with(
*expected_cmd, prlimit=nova.privsep.qemu.QEMU_IMG_LIMITS)
def test_privileged_qemu_img_info(self):
self._test_qemu_img_info(nova.privsep.qemu.privileged_qemu_img_info)
def test_unprivileged_qemu_img_info(self):
self._test_qemu_img_info(nova.privsep.qemu.unprivileged_qemu_img_info)
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