nova/nova/tests/unit/virt/test_images.py

80 lines
3.2 KiB
Python

# Copyright 2013 IBM Corp.
#
# 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 os
import mock
from oslo_concurrency import processutils
import six
from nova import exception
from nova import test
from nova import utils
from nova.virt import images
class QemuTestCase(test.NoDBTestCase):
def test_qemu_info_with_bad_path(self):
self.assertRaises(exception.DiskNotFound,
images.qemu_img_info,
'/path/that/does/not/exist')
@mock.patch.object(os.path, 'exists', return_value=True)
def test_qemu_info_with_errors(self, path_exists):
self.assertRaises(exception.InvalidDiskInfo,
images.qemu_img_info,
'/fake/path')
@mock.patch.object(os.path, 'exists', return_value=True)
@mock.patch.object(utils, 'execute',
return_value=('stdout', None))
def test_qemu_info_with_no_errors(self, path_exists,
utils_execute):
image_info = images.qemu_img_info('/fake/path')
self.assertTrue(image_info)
self.assertTrue(str(image_info))
@mock.patch.object(utils, 'execute',
side_effect=processutils.ProcessExecutionError)
def test_convert_image_with_errors(self, mocked_execute):
self.assertRaises(exception.ImageUnacceptable,
images.convert_image,
'/path/that/does/not/exist',
'/other/path/that/does/not/exist',
'qcow2',
'raw')
@mock.patch.object(utils, 'execute')
@mock.patch.object(os.path, 'exists', return_value=True)
def test_convert_image_with_prlimit_fail(self, path, mocked_execute):
mocked_execute.side_effect = \
processutils.ProcessExecutionError(exit_code=-9)
exc = self.assertRaises(exception.InvalidDiskInfo,
images.qemu_img_info,
'/fake/path')
self.assertIn('qemu-img aborted by prlimits', six.text_type(exc))
@mock.patch.object(images, 'convert_image',
side_effect=exception.ImageUnacceptable)
@mock.patch.object(images, 'qemu_img_info')
@mock.patch.object(images, 'fetch')
def test_fetch_to_raw_errors(self, convert_image, qemu_img_info, fetch):
qemu_img_info.backing_file = None
qemu_img_info.file_format = 'qcow2'
qemu_img_info.virtual_size = 20
self.assertRaisesRegex(exception.ImageUnacceptable,
'Image href123 is unacceptable.*',
images.fetch_to_raw,
None, 'href123', '/no/path')