253 lines
7.9 KiB
Python
253 lines
7.9 KiB
Python
# Copyright 2013 OpenStack Foundation
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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 tarfile
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import mock
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from nova import test
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from nova.virt.xenapi.image import utils
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@mock.patch.object(utils, 'IMAGE_API')
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class GlanceImageTestCase(test.NoDBTestCase):
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def _get_image(self):
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return utils.GlanceImage(mock.sentinel.context,
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mock.sentinel.image_ref)
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def test_meta(self, mocked):
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mocked.get.return_value = mock.sentinel.meta
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image = self._get_image()
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self.assertEqual(mock.sentinel.meta, image.meta)
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mocked.get.assert_called_once_with(mock.sentinel.context,
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mock.sentinel.image_ref)
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def test_download_to(self, mocked):
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mocked.download.return_value = None
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image = self._get_image()
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result = image.download_to(mock.sentinel.fobj)
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self.assertIsNone(result)
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mocked.download.assert_called_once_with(mock.sentinel.context,
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mock.sentinel.image_ref,
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mock.sentinel.fobj)
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def test_is_raw_tgz_empty_meta(self, mocked):
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mocked.get.return_value = {}
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image = self._get_image()
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self.assertEqual(False, image.is_raw_tgz())
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def test_is_raw_tgz_for_raw_tgz(self, mocked):
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mocked.get.return_value = {
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'disk_format': 'raw',
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'container_format': 'tgz'
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}
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image = self._get_image()
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self.assertEqual(True, image.is_raw_tgz())
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def test_data(self, mocked):
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mocked.download.return_value = mock.sentinel.image
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image = self._get_image()
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self.assertEqual(mock.sentinel.image, image.data())
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class RawImageTestCase(test.NoDBTestCase):
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def test_get_size(self):
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glance_image = self.mox.CreateMock(utils.GlanceImage)
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glance_image.meta = {'size': '123'}
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raw_image = utils.RawImage(glance_image)
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self.mox.ReplayAll()
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self.assertEqual(123, raw_image.get_size())
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def test_stream_to(self):
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glance_image = self.mox.CreateMock(utils.GlanceImage)
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glance_image.download_to('file').AndReturn('result')
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raw_image = utils.RawImage(glance_image)
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self.mox.ReplayAll()
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self.assertEqual('result', raw_image.stream_to('file'))
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class TestIterableBasedFile(test.NoDBTestCase):
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def test_constructor(self):
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class FakeIterable(object):
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def __iter__(_self):
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return 'iterator'
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the_file = utils.IterableToFileAdapter(FakeIterable())
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self.assertEqual('iterator', the_file.iterator)
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def test_read_one_character(self):
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the_file = utils.IterableToFileAdapter([
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'chunk1', 'chunk2'
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])
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self.assertEqual('c', the_file.read(1))
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def test_read_stores_remaining_characters(self):
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the_file = utils.IterableToFileAdapter([
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'chunk1', 'chunk2'
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])
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the_file.read(1)
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self.assertEqual('hunk1', the_file.remaining_data)
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def test_read_remaining_characters(self):
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the_file = utils.IterableToFileAdapter([
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'chunk1', 'chunk2'
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])
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self.assertEqual('c', the_file.read(1))
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self.assertEqual('h', the_file.read(1))
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def test_read_reached_end_of_file(self):
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the_file = utils.IterableToFileAdapter([
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'chunk1', 'chunk2'
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])
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self.assertEqual('chunk1', the_file.read(100))
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self.assertEqual('chunk2', the_file.read(100))
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self.assertEqual('', the_file.read(100))
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def test_empty_chunks(self):
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the_file = utils.IterableToFileAdapter([
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'', '', 'chunk2'
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])
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self.assertEqual('chunk2', the_file.read(100))
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class RawTGZTestCase(test.NoDBTestCase):
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def test_as_tarfile(self):
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image = utils.RawTGZImage(None)
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self.mox.StubOutWithMock(image, '_as_file')
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self.mox.StubOutWithMock(utils.tarfile, 'open')
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image._as_file().AndReturn('the_file')
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utils.tarfile.open(mode='r|gz', fileobj='the_file').AndReturn('tf')
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self.mox.ReplayAll()
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result = image._as_tarfile()
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self.assertEqual('tf', result)
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def test_as_file(self):
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self.mox.StubOutWithMock(utils, 'IterableToFileAdapter')
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glance_image = self.mox.CreateMock(utils.GlanceImage)
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image = utils.RawTGZImage(glance_image)
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glance_image.data().AndReturn('iterable-data')
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utils.IterableToFileAdapter('iterable-data').AndReturn('data-as-file')
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self.mox.ReplayAll()
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result = image._as_file()
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self.assertEqual('data-as-file', result)
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def test_get_size(self):
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tar_file = self.mox.CreateMock(tarfile.TarFile)
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tar_info = self.mox.CreateMock(tarfile.TarInfo)
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image = utils.RawTGZImage(None)
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self.mox.StubOutWithMock(image, '_as_tarfile')
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image._as_tarfile().AndReturn(tar_file)
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tar_file.next().AndReturn(tar_info)
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tar_info.size = 124
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self.mox.ReplayAll()
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result = image.get_size()
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self.assertEqual(124, result)
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self.assertEqual(image._tar_info, tar_info)
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self.assertEqual(image._tar_file, tar_file)
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def test_get_size_called_twice(self):
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tar_file = self.mox.CreateMock(tarfile.TarFile)
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tar_info = self.mox.CreateMock(tarfile.TarInfo)
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image = utils.RawTGZImage(None)
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self.mox.StubOutWithMock(image, '_as_tarfile')
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image._as_tarfile().AndReturn(tar_file)
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tar_file.next().AndReturn(tar_info)
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tar_info.size = 124
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self.mox.ReplayAll()
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image.get_size()
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result = image.get_size()
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self.assertEqual(124, result)
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self.assertEqual(image._tar_info, tar_info)
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self.assertEqual(image._tar_file, tar_file)
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def test_stream_to_without_size_retrieved(self):
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source_tar = self.mox.CreateMock(tarfile.TarFile)
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first_tarinfo = self.mox.CreateMock(tarfile.TarInfo)
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target_file = self.mox.CreateMock(file)
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source_file = self.mox.CreateMock(file)
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image = utils.RawTGZImage(None)
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image._image_service_and_image_id = ('service', 'id')
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self.mox.StubOutWithMock(image, '_as_tarfile', source_tar)
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self.mox.StubOutWithMock(utils.shutil, 'copyfileobj')
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image._as_tarfile().AndReturn(source_tar)
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source_tar.next().AndReturn(first_tarinfo)
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source_tar.extractfile(first_tarinfo).AndReturn(source_file)
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utils.shutil.copyfileobj(source_file, target_file)
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source_tar.close()
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self.mox.ReplayAll()
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image.stream_to(target_file)
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def test_stream_to_with_size_retrieved(self):
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source_tar = self.mox.CreateMock(tarfile.TarFile)
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first_tarinfo = self.mox.CreateMock(tarfile.TarInfo)
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target_file = self.mox.CreateMock(file)
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source_file = self.mox.CreateMock(file)
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first_tarinfo.size = 124
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image = utils.RawTGZImage(None)
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image._image_service_and_image_id = ('service', 'id')
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self.mox.StubOutWithMock(image, '_as_tarfile', source_tar)
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self.mox.StubOutWithMock(utils.shutil, 'copyfileobj')
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image._as_tarfile().AndReturn(source_tar)
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source_tar.next().AndReturn(first_tarinfo)
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source_tar.extractfile(first_tarinfo).AndReturn(source_file)
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utils.shutil.copyfileobj(source_file, target_file)
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source_tar.close()
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self.mox.ReplayAll()
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image.get_size()
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image.stream_to(target_file)
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