27cc6c9a5c
This allows users of the RBD client to use a 'with' statement and bound the scope of a client connection to a python block, which makes for lovely looking code under the right conditions. Change-Id: I455e8b6063dff36794d8aec7922ee1f26b3cf298
152 lines
5.8 KiB
Python
152 lines
5.8 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.initiator import linuxrbd
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from os_brick.tests import base
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from oslo_utils import encodeutils
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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(encodeutils.safe_encode('test_user'),
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client.rbd_user)
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self.assertEqual(encodeutils.safe_encode('test_pool'),
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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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rados_id=encodeutils.safe_encode('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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encodeutils.safe_encode('test_pool'))
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self.assertEqual(1, mock_rados.Rados.return_value.shutdown.call_count)
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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('', 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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def test_close(self):
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self.mock_volume_wrapper.close()
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