1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
|
# 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
from os_brick import exception
from os_brick.initiator import linuxrbd
from os_brick.tests import base
from os_brick import utils
class MockRados(object):
class Error(Exception):
pass
class ioctx(object):
def __init__(self, *args, **kwargs):
pass
def __enter__(self, *args, **kwargs):
return self
def __exit__(self, *args, **kwargs):
return False
def close(self, *args, **kwargs):
pass
class Rados(object):
def __init__(self, *args, **kwargs):
pass
def __enter__(self, *args, **kwargs):
return self
def __exit__(self, *args, **kwargs):
return False
def connect(self, *args, **kwargs):
pass
def open_ioctx(self, *args, **kwargs):
return MockRados.ioctx()
def shutdown(self, *args, **kwargs):
pass
class RBDClientTestCase(base.TestCase):
def setUp(self):
super(RBDClientTestCase, self).setUp()
@mock.patch('os_brick.initiator.linuxrbd.rbd')
@mock.patch('os_brick.initiator.linuxrbd.rados')
def test_with_client(self, mock_rados, mock_rbd):
with linuxrbd.RBDClient('test_user', 'test_pool') as client:
# Verify object attributes are assigned as expected
self.assertEqual('/etc/ceph/ceph.conf', client.rbd_conf)
self.assertEqual(utils.convert_str('test_user'), client.rbd_user)
self.assertEqual(utils.convert_str('test_pool'), client.rbd_pool)
# Assert connect is called with correct paramaters
mock_rados.Rados.assert_called_once_with(
clustername='ceph',
rados_id=utils.convert_str('test_user'),
conffile='/etc/ceph/ceph.conf')
# Ensure correct calls to connect to cluster
self.assertEqual(
1, mock_rados.Rados.return_value.connect.call_count)
mock_rados.Rados.return_value.open_ioctx.assert_called_once_with(
utils.convert_str('test_pool'))
self.assertEqual(1, mock_rados.Rados.return_value.shutdown.call_count)
@mock.patch.object(MockRados.Rados, 'connect', side_effect=MockRados.Error)
def test_with_client_error(self, _):
linuxrbd.rados = MockRados
linuxrbd.rados.Error = MockRados.Error
def test():
with linuxrbd.RBDClient('test_user', 'test_pool'):
pass
self.assertRaises(exception.BrickException, test)
class InvalidArgument(Exception):
pass
class RBDVolumeIOWrapperTestCase(base.TestCase):
def setUp(self):
super(RBDVolumeIOWrapperTestCase, self).setUp()
self.mock_volume = mock.Mock()
self.mock_volume_wrapper = \
linuxrbd.RBDVolumeIOWrapper(self.mock_volume)
self.data_length = 1024
self.full_data = 'abcd' * 256
self._rbd_lib = self.patch('os_brick.initiator.linuxrbd.rbd')
self._rbd_lib.InvalidArgument = InvalidArgument
def test_init(self):
self.assertEqual(self.mock_volume,
self.mock_volume_wrapper._rbd_volume)
self.assertEqual(0, self.mock_volume_wrapper._offset)
def test_inc_offset(self):
self.mock_volume_wrapper._inc_offset(10)
self.mock_volume_wrapper._inc_offset(10)
self.assertEqual(20, self.mock_volume_wrapper._offset)
def test_read(self):
def mock_read(offset, length):
return self.full_data[offset:length]
self.mock_volume.image.read.side_effect = mock_read
self.mock_volume.image.size.return_value = self.data_length
data = self.mock_volume_wrapper.read()
self.assertEqual(self.full_data, data)
data = self.mock_volume_wrapper.read()
self.assertEqual(b'', data)
self.mock_volume_wrapper.seek(0)
data = self.mock_volume_wrapper.read()
self.assertEqual(self.full_data, data)
self.mock_volume_wrapper.seek(0)
data = self.mock_volume_wrapper.read(10)
self.assertEqual(self.full_data[:10], data)
def test_write(self):
self.mock_volume_wrapper.write(self.full_data)
self.assertEqual(1024, self.mock_volume_wrapper._offset)
def test_seekable(self):
self.assertTrue(self.mock_volume_wrapper.seekable)
def test_seek(self):
self.assertEqual(0, self.mock_volume_wrapper._offset)
self.mock_volume_wrapper.seek(10)
self.assertEqual(10, self.mock_volume_wrapper._offset)
self.mock_volume_wrapper.seek(10)
self.assertEqual(10, self.mock_volume_wrapper._offset)
self.mock_volume_wrapper.seek(10, 1)
self.assertEqual(20, self.mock_volume_wrapper._offset)
self.mock_volume_wrapper.seek(0)
self.mock_volume_wrapper.write(self.full_data)
self.mock_volume.image.size.return_value = self.data_length
self.mock_volume_wrapper.seek(0)
self.assertEqual(0, self.mock_volume_wrapper._offset)
self.mock_volume_wrapper.seek(10, 2)
self.assertEqual(self.data_length + 10,
self.mock_volume_wrapper._offset)
self.mock_volume_wrapper.seek(-10, 2)
self.assertEqual(self.data_length - 10,
self.mock_volume_wrapper._offset)
# test exceptions.
self.assertRaises(IOError, self.mock_volume_wrapper.seek, 0, 3)
self.assertRaises(IOError, self.mock_volume_wrapper.seek, -1)
# offset should not have been changed by any of the previous
# operations.
self.assertEqual(self.data_length - 10,
self.mock_volume_wrapper._offset)
def test_tell(self):
self.assertEqual(0, self.mock_volume_wrapper.tell())
self.mock_volume_wrapper._inc_offset(10)
self.assertEqual(10, self.mock_volume_wrapper.tell())
def test_flush(self):
with mock.patch.object(linuxrbd, 'LOG') as mock_logger:
self.mock_volume.image.flush = mock.Mock()
self.mock_volume_wrapper.flush()
self.assertEqual(1, self.mock_volume.image.flush.call_count)
self.mock_volume.image.require_not_closed.assert_called_once_with()
self.mock_volume.image.flush.reset_mock()
self.mock_volume.image.require_not_closed.reset_mock()
# this should be caught and logged silently.
self.mock_volume.image.flush.side_effect = AttributeError
self.mock_volume_wrapper.flush()
self.assertEqual(1, self.mock_volume.image.flush.call_count)
self.assertEqual(1, mock_logger.warning.call_count)
self.mock_volume.image.require_not_closed.assert_called_once_with()
def test_flush_closed_image(self):
"""Test when image is closed but wrapper isn't"""
with mock.patch.object(linuxrbd, 'LOG') as mock_logger:
self.mock_volume.image.require_not_closed.side_effect = \
InvalidArgument
self.mock_volume.image.flush = mock.Mock()
self.mock_volume_wrapper.flush()
self.mock_volume.image.flush.assert_not_called()
self.assertEqual(1, mock_logger.warning.call_count)
log_msg = mock_logger.warning.call_args[0][0]
self.assertTrue(
log_msg.startswith("RBDVolumeIOWrapper's underlying image"))
self.mock_volume.image.require_not_closed.assert_called_once_with()
def test_flush_on_closed(self):
self.mock_volume_wrapper.close()
self.mock_volume.image.flush.assert_called_once_with()
self.assertTrue(self.mock_volume_wrapper.closed)
self.mock_volume.image.flush.reset_mock()
self.assertRaises(ValueError, self.mock_volume_wrapper.flush)
self.mock_volume.image.flush.assert_not_called()
self.mock_volume.image.require_not_closed.assert_called_once_with()
def test_flush_on_image_closed(self):
self.mock_volume.image.require_not_closed.side_effect = InvalidArgument
self.mock_volume_wrapper.close()
self.mock_volume.image.flush.assert_not_called()
self.assertTrue(self.mock_volume_wrapper.closed)
self.mock_volume.image.close.assert_called_once_with()
self.mock_volume.image.require_not_closed.assert_called_once_with()
def test_fileno(self):
self.assertRaises(IOError, self.mock_volume_wrapper.fileno)
@mock.patch('os_brick.initiator.linuxrbd.rbd')
@mock.patch('os_brick.initiator.linuxrbd.rados')
@mock.patch.object(linuxrbd.RBDClient, 'disconnect')
def test_close(self, rbd_disconnect, mock_rados, mock_rbd):
rbd_client = linuxrbd.RBDClient('user', 'pool')
rbd_volume = linuxrbd.RBDVolume(rbd_client, 'volume')
rbd_handle = linuxrbd.RBDVolumeIOWrapper(
linuxrbd.RBDImageMetadata(rbd_volume, 'pool', 'user', None))
with mock.patch.object(rbd_volume, 'closed', False):
rbd_handle.close()
self.assertEqual(1, rbd_disconnect.call_count)
# Confirm the handle now reports that is closed (this attribute cannot
# be modified directly)
self.assertTrue(rbd_handle.closed)
# New call to close shouldn't create additional calls
rbd_handle.close()
self.assertEqual(1, rbd_disconnect.call_count)
class RBDVolumeTestCase(base.TestCase):
def test_name_attribute(self):
mock_client = mock.Mock()
rbd_volume = linuxrbd.RBDVolume(mock_client, 'volume')
self.assertEqual('volume', rbd_volume.name)
|
