217 lines
7.6 KiB
Python
217 lines
7.6 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License"); you may not
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# use this file except in compliance with the License. You may obtain a copy of
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# 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 under
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# the License.
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import mock
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from os_brick import exception
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from os_brick.initiator import linuxrbd
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from os_brick.tests import base
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from os_brick import utils
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class MockRados(object):
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class Error(Exception):
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pass
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class ioctx(object):
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def __init__(self, *args, **kwargs):
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pass
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def __enter__(self, *args, **kwargs):
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return self
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def __exit__(self, *args, **kwargs):
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return False
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def close(self, *args, **kwargs):
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pass
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class Rados(object):
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def __init__(self, *args, **kwargs):
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pass
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def __enter__(self, *args, **kwargs):
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return self
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def __exit__(self, *args, **kwargs):
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return False
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def connect(self, *args, **kwargs):
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pass
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def open_ioctx(self, *args, **kwargs):
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return MockRados.ioctx()
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def shutdown(self, *args, **kwargs):
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pass
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class RBDClientTestCase(base.TestCase):
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def setUp(self):
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super(RBDClientTestCase, self).setUp()
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@mock.patch('os_brick.initiator.linuxrbd.rbd')
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@mock.patch('os_brick.initiator.linuxrbd.rados')
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def test_with_client(self, mock_rados, mock_rbd):
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with linuxrbd.RBDClient('test_user', 'test_pool') as client:
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# Verify object attributes are assigned as expected
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self.assertEqual('/etc/ceph/ceph.conf', client.rbd_conf)
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self.assertEqual(utils.convert_str('test_user'), client.rbd_user)
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self.assertEqual(utils.convert_str('test_pool'), client.rbd_pool)
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# Assert connect is called with correct paramaters
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mock_rados.Rados.assert_called_once_with(
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clustername='ceph',
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rados_id=utils.convert_str('test_user'),
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conffile='/etc/ceph/ceph.conf')
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# Ensure correct calls to connect to cluster
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self.assertEqual(
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1, mock_rados.Rados.return_value.connect.call_count)
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mock_rados.Rados.return_value.open_ioctx.assert_called_once_with(
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utils.convert_str('test_pool'))
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self.assertEqual(1, mock_rados.Rados.return_value.shutdown.call_count)
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@mock.patch.object(MockRados.Rados, 'connect', side_effect=MockRados.Error)
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def test_with_client_error(self, _):
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linuxrbd.rados = MockRados
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linuxrbd.rados.Error = MockRados.Error
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def test():
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with linuxrbd.RBDClient('test_user', 'test_pool'):
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pass
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self.assertRaises(exception.BrickException, test)
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class RBDVolumeIOWrapperTestCase(base.TestCase):
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def setUp(self):
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super(RBDVolumeIOWrapperTestCase, self).setUp()
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self.mock_volume = mock.Mock()
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self.mock_volume_wrapper = \
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linuxrbd.RBDVolumeIOWrapper(self.mock_volume)
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self.data_length = 1024
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self.full_data = 'abcd' * 256
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def test_init(self):
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self.assertEqual(self.mock_volume,
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self.mock_volume_wrapper._rbd_volume)
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self.assertEqual(0, self.mock_volume_wrapper._offset)
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def test_inc_offset(self):
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self.mock_volume_wrapper._inc_offset(10)
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self.mock_volume_wrapper._inc_offset(10)
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self.assertEqual(20, self.mock_volume_wrapper._offset)
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def test_read(self):
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def mock_read(offset, length):
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return self.full_data[offset:length]
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self.mock_volume.image.read.side_effect = mock_read
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self.mock_volume.image.size.return_value = self.data_length
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data = self.mock_volume_wrapper.read()
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self.assertEqual(self.full_data, data)
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data = self.mock_volume_wrapper.read()
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self.assertEqual(b'', data)
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self.mock_volume_wrapper.seek(0)
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data = self.mock_volume_wrapper.read()
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self.assertEqual(self.full_data, data)
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self.mock_volume_wrapper.seek(0)
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data = self.mock_volume_wrapper.read(10)
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self.assertEqual(self.full_data[:10], data)
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def test_write(self):
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self.mock_volume_wrapper.write(self.full_data)
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self.assertEqual(1024, self.mock_volume_wrapper._offset)
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def test_seekable(self):
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self.assertTrue(self.mock_volume_wrapper.seekable)
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def test_seek(self):
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self.assertEqual(0, self.mock_volume_wrapper._offset)
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self.mock_volume_wrapper.seek(10)
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self.assertEqual(10, self.mock_volume_wrapper._offset)
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self.mock_volume_wrapper.seek(10)
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self.assertEqual(10, self.mock_volume_wrapper._offset)
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self.mock_volume_wrapper.seek(10, 1)
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self.assertEqual(20, self.mock_volume_wrapper._offset)
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self.mock_volume_wrapper.seek(0)
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self.mock_volume_wrapper.write(self.full_data)
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self.mock_volume.image.size.return_value = self.data_length
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self.mock_volume_wrapper.seek(0)
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self.assertEqual(0, self.mock_volume_wrapper._offset)
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self.mock_volume_wrapper.seek(10, 2)
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self.assertEqual(self.data_length + 10,
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self.mock_volume_wrapper._offset)
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self.mock_volume_wrapper.seek(-10, 2)
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self.assertEqual(self.data_length - 10,
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self.mock_volume_wrapper._offset)
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# test exceptions.
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self.assertRaises(IOError, self.mock_volume_wrapper.seek, 0, 3)
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self.assertRaises(IOError, self.mock_volume_wrapper.seek, -1)
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# offset should not have been changed by any of the previous
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# operations.
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self.assertEqual(self.data_length - 10,
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self.mock_volume_wrapper._offset)
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def test_tell(self):
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self.assertEqual(0, self.mock_volume_wrapper.tell())
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self.mock_volume_wrapper._inc_offset(10)
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self.assertEqual(10, self.mock_volume_wrapper.tell())
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def test_flush(self):
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with mock.patch.object(linuxrbd, 'LOG') as mock_logger:
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self.mock_volume.image.flush = mock.Mock()
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self.mock_volume_wrapper.flush()
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self.assertEqual(1, self.mock_volume.image.flush.call_count)
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self.mock_volume.image.flush.reset_mock()
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# this should be caught and logged silently.
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self.mock_volume.image.flush.side_effect = AttributeError
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self.mock_volume_wrapper.flush()
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self.assertEqual(1, self.mock_volume.image.flush.call_count)
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self.assertEqual(1, mock_logger.warning.call_count)
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def test_fileno(self):
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self.assertRaises(IOError, self.mock_volume_wrapper.fileno)
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@mock.patch('os_brick.initiator.linuxrbd.rbd')
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@mock.patch('os_brick.initiator.linuxrbd.rados')
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@mock.patch.object(linuxrbd.RBDClient, 'disconnect')
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def test_close(self, rbd_disconnect, mock_rados, mock_rbd):
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rbd_client = linuxrbd.RBDClient('user', 'pool')
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rbd_volume = linuxrbd.RBDVolume(rbd_client, 'volume')
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rbd_handle = linuxrbd.RBDVolumeIOWrapper(
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linuxrbd.RBDImageMetadata(rbd_volume, 'pool', 'user', None))
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rbd_handle.close()
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self.assertEqual(1, rbd_disconnect.call_count)
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class RBDVolumeTestCase(base.TestCase):
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def test_name_attribute(self):
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mock_client = mock.Mock()
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rbd_volume = linuxrbd.RBDVolume(mock_client, 'volume')
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self.assertEqual('volume', rbd_volume.name)
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