os-brick/os_brick/tests/initiator/connectors/test_rbd.py

580 lines
27 KiB
Python

# (c) Copyright 2013 Hewlett-Packard Development Company, L.P.
#
# 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
import ddt
from os_brick import exception
from os_brick.initiator.connectors import rbd
from os_brick.initiator import linuxrbd
from os_brick.privileged import rootwrap as priv_rootwrap
from os_brick.tests.initiator import test_connector
from os_brick import utils
@ddt.ddt
class RBDConnectorTestCase(test_connector.ConnectorTestCase):
def setUp(self):
super(RBDConnectorTestCase, self).setUp()
self.user = 'fake_user'
self.pool = 'fake_pool'
self.volume = 'fake_volume'
self.clustername = 'fake_ceph'
self.hosts = ['192.168.10.2']
self.ports = ['6789']
self.keyring = "[client.cinder]\n key = test\n"
self.connection_properties = {
'auth_username': self.user,
'name': '%s/%s' % (self.pool, self.volume),
'cluster_name': self.clustername,
'hosts': self.hosts,
'ports': self.ports,
'keyring': self.keyring,
}
def test_get_search_path(self):
rbd_connector = rbd.RBDConnector(None)
path = rbd_connector.get_search_path()
self.assertIsNone(path)
@mock.patch('os_brick.initiator.linuxrbd.rbd')
@mock.patch('os_brick.initiator.linuxrbd.rados')
def test_get_volume_paths(self, mock_rados, mock_rbd):
rbd_connector = rbd.RBDConnector(None)
expected = []
actual = rbd_connector.get_volume_paths(self.connection_properties)
self.assertEqual(expected, actual)
def test_get_connector_properties(self):
props = rbd.RBDConnector.get_connector_properties(
'sudo', multipath=True, enforce_multipath=True)
expected_props = {'do_local_attach': False}
self.assertEqual(expected_props, props)
@mock.patch('os_brick.initiator.linuxrbd.rbd')
@mock.patch('os_brick.initiator.linuxrbd.rados')
@mock.patch.object(rbd.RBDConnector, '_create_ceph_conf')
@mock.patch('os.path.exists')
def test_connect_volume(self, mock_path, mock_conf, mock_rados, mock_rbd):
"""Test the connect volume case."""
rbd_connector = rbd.RBDConnector(None)
mock_path.return_value = False
mock_conf.return_value = "/tmp/fake_dir/fake_ceph.conf"
device_info = rbd_connector.connect_volume(self.connection_properties)
# Ensure rados is instantiated correctly
mock_rados.Rados.assert_called_once_with(
clustername=self.clustername,
rados_id=utils.convert_str(self.user),
conffile='/tmp/fake_dir/fake_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(self.pool))
# Ensure rbd image is instantiated correctly
mock_rbd.Image.assert_called_once_with(
mock_rados.Rados.return_value.open_ioctx.return_value,
utils.convert_str(self.volume), read_only=False,
snapshot=None)
# Ensure expected object is returned correctly
self.assertIsInstance(device_info['path'],
linuxrbd.RBDVolumeIOWrapper)
@mock.patch('os_brick.initiator.linuxrbd.rbd')
@mock.patch('os_brick.initiator.linuxrbd.rados')
@mock.patch.object(rbd.RBDConnector, '_create_ceph_conf')
@mock.patch('os.path.exists')
def test_provided_keyring(self, mock_path, mock_conf, mock_rados,
mock_rbd):
conn = rbd.RBDConnector(None)
mock_path.return_value = False
mock_conf.return_value = "/tmp/fake_dir/fake_ceph.conf"
self.connection_properties['keyring'] = self.keyring
conn.connect_volume(self.connection_properties)
mock_conf.assert_called_once_with(self.hosts, self.ports,
self.clustername, self.user,
self.keyring)
def test_keyring_is_none(self):
conn = rbd.RBDConnector(None)
keyring = None
keyring_data = "[client.cinder]\n key = test\n"
mockopen = mock.mock_open(read_data=keyring_data)
mockopen.return_value.__exit__ = mock.Mock()
with mock.patch('os_brick.initiator.connectors.rbd.open', mockopen,
create=True):
self.assertEqual(
conn._check_or_get_keyring_contents(keyring, 'cluster',
'user'), keyring_data)
self.assertEqual(
conn._check_or_get_keyring_contents(keyring, 'cluster',
None), '')
def test_keyring_raise_error(self):
conn = rbd.RBDConnector(None)
keyring = None
mockopen = mock.mock_open()
mockopen.return_value = ""
with mock.patch('os_brick.initiator.connectors.rbd.open', mockopen,
create=True) as mock_keyring_file:
mock_keyring_file.side_effect = IOError
self.assertRaises(exception.BrickException,
conn._check_or_get_keyring_contents, keyring,
'cluster', 'user')
@ddt.data((['192.168.1.1', '192.168.1.2'],
['192.168.1.1', '192.168.1.2']),
(['3ffe:1900:4545:3:200:f8ff:fe21:67cf',
'fe80:0:0:0:200:f8ff:fe21:67cf'],
['[3ffe:1900:4545:3:200:f8ff:fe21:67cf]',
'[fe80:0:0:0:200:f8ff:fe21:67cf]']),
(['foobar', 'fizzbuzz'], ['foobar', 'fizzbuzz']),
(['192.168.1.1',
'3ffe:1900:4545:3:200:f8ff:fe21:67cf',
'hello, world!'],
['192.168.1.1',
'[3ffe:1900:4545:3:200:f8ff:fe21:67cf]',
'hello, world!']))
@ddt.unpack
def test_sanitize_mon_host(self, hosts_in, hosts_out):
conn = rbd.RBDConnector(None)
self.assertEqual(hosts_out, conn._sanitize_mon_hosts(hosts_in))
@mock.patch('os_brick.initiator.connectors.rbd.tempfile.mkstemp')
def test_create_ceph_conf(self, mock_mkstemp):
mockopen = mock.mock_open()
fd = mock.sentinel.fd
tmpfile = mock.sentinel.tmpfile
mock_mkstemp.return_value = (fd, tmpfile)
with mock.patch('os.fdopen', mockopen, create=True):
rbd_connector = rbd.RBDConnector(None)
conf_path = rbd_connector._create_ceph_conf(
self.hosts, self.ports, self.clustername, self.user,
self.keyring)
self.assertEqual(conf_path, tmpfile)
mock_mkstemp.assert_called_once_with(prefix='brickrbd_')
# Bug #1865754 - make sure generated config file has a '[global]'
# section
_, args, _ = mockopen().writelines.mock_calls[0]
self.assertIn('[global]', args[0])
@mock.patch('os_brick.privileged.rbd.root_create_ceph_conf')
def test_create_non_openstack_config(self, mock_priv_create):
res = rbd.RBDConnector.create_non_openstack_config(
self.connection_properties)
mock_priv_create.assert_called_once_with(self.hosts, self.ports,
self.clustername, self.user,
self.keyring)
self.assertIs(mock_priv_create.return_value, res)
@mock.patch('os_brick.privileged.rbd.root_create_ceph_conf')
def test_create_non_openstack_config_in_openstack(self, mock_priv_create):
connection_properties = self.connection_properties.copy()
del connection_properties['keyring']
res = rbd.RBDConnector.create_non_openstack_config(
connection_properties)
mock_priv_create.assert_not_called()
self.assertIsNone(res)
@mock.patch.object(priv_rootwrap, 'execute', return_value=None)
def test_connect_local_volume(self, mock_execute):
rbd_connector = rbd.RBDConnector(None, do_local_attach=True)
conn = {'name': 'pool/image',
'auth_username': 'fake_user',
'hosts': ['192.168.10.2'],
'ports': ['6789']}
device_info = rbd_connector.connect_volume(conn)
execute_call1 = mock.call('which', 'rbd')
cmd = ['rbd', 'map', 'image', '--pool', 'pool', '--id', 'fake_user',
'--mon_host', '192.168.10.2:6789']
execute_call2 = mock.call(*cmd, root_helper=None, run_as_root=True)
mock_execute.assert_has_calls([execute_call1, execute_call2])
expected_info = {'path': '/dev/rbd/pool/image',
'type': 'block'}
self.assertEqual(expected_info, device_info)
@mock.patch.object(priv_rootwrap, 'execute', return_value=None)
@mock.patch('os.path.exists')
@mock.patch('os.path.islink')
@mock.patch('os.path.realpath')
def test_connect_local_volume_dev_exist(self, mock_realpath, mock_islink,
mock_exists, mock_execute):
rbd_connector = rbd.RBDConnector(None, do_local_attach=True)
conn = {'name': 'pool/image',
'auth_username': 'fake_user',
'hosts': ['192.168.10.2'],
'ports': ['6789']}
mock_realpath.return_value = '/dev/rbd0'
mock_islink.return_value = True
mock_exists.return_value = True
device_info = rbd_connector.connect_volume(conn)
execute_call1 = mock.call('which', 'rbd')
cmd = ['rbd', 'map', 'image', '--pool', 'pool', '--id', 'fake_user',
'--mon_host', '192.168.10.2:6789']
execute_call2 = mock.call(*cmd, root_helper=None, run_as_root=True)
mock_execute.assert_has_calls([execute_call1])
self.assertFalse(execute_call2 in mock_execute.mock_calls)
expected_info = {'path': '/dev/rbd/pool/image',
'type': 'block'}
self.assertEqual(expected_info, device_info)
@mock.patch.object(priv_rootwrap, 'execute', return_value=None)
def test_connect_local_volume_without_mons(self, mock_execute):
rbd_connector = rbd.RBDConnector(None, do_local_attach=True)
conn = {'name': 'pool/image',
'auth_username': 'fake_user'}
device_info = rbd_connector.connect_volume(conn)
execute_call1 = mock.call('which', 'rbd')
cmd = ['rbd', 'map', 'image', '--pool', 'pool', '--id', 'fake_user']
execute_call2 = mock.call(*cmd, root_helper=None, run_as_root=True)
mock_execute.assert_has_calls([execute_call1, execute_call2])
expected_info = {'path': '/dev/rbd/pool/image',
'type': 'block'}
self.assertEqual(expected_info, device_info)
@mock.patch.object(priv_rootwrap, 'execute', return_value=None)
def test_connect_local_volume_without_auth(self, mock_execute):
rbd_connector = rbd.RBDConnector(None, do_local_attach=True)
conn = {'name': 'pool/image',
'hosts': ['192.168.10.2'],
'ports': ['6789']}
self.assertRaises(exception.BrickException,
rbd_connector.connect_volume,
conn)
@mock.patch('os_brick.initiator.connectors.rbd.'
'RBDConnector._local_attach_volume')
def test_connect_volume_local(self, mock_local_attach):
connector = rbd.RBDConnector(None, do_local_attach=True)
res = connector.connect_volume(self.connection_properties)
mock_local_attach.assert_called_once_with(self.connection_properties)
self.assertIs(mock_local_attach.return_value, res)
@mock.patch.object(rbd.RBDConnector, '_get_rbd_args')
@mock.patch.object(rbd.RBDConnector, 'create_non_openstack_config')
@mock.patch.object(rbd.RBDConnector, '_execute')
def test__local_attach_volume_non_openstack(self, mock_execute,
mock_rbd_cfg, mock_args):
mock_args.return_value = [mock.sentinel.rbd_args]
connector = rbd.RBDConnector(None, do_local_attach=True)
res = connector._local_attach_volume(self.connection_properties)
mock_rbd_cfg.assert_called_once_with(self.connection_properties)
mock_args.assert_called_once_with(self.connection_properties,
mock_rbd_cfg.return_value)
self.assertEqual(2, mock_execute.call_count)
mock_execute.assert_has_calls([
mock.call('which', 'rbd'),
mock.call('rbd', 'map', 'fake_volume', '--pool', 'fake_pool',
mock.sentinel.rbd_args,
root_helper=connector._root_helper, run_as_root=True)
])
expected = {'path': '/dev/rbd/fake_pool/fake_volume',
'type': 'block',
'conf': mock_rbd_cfg.return_value}
self.assertEqual(expected, res)
@mock.patch('os_brick.privileged.rbd.delete_if_exists')
@mock.patch.object(rbd.RBDConnector, '_get_rbd_args')
@mock.patch.object(rbd.RBDConnector, 'create_non_openstack_config')
@mock.patch.object(rbd.RBDConnector, '_execute')
def test__local_attach_volume_fail_non_openstack(self, mock_execute,
mock_rbd_cfg, mock_args,
mock_delete):
mock_args.return_value = [mock.sentinel.rbd_args]
mock_execute.side_effect = [None, ValueError]
connector = rbd.RBDConnector(None, do_local_attach=True)
self.assertRaises(ValueError, connector._local_attach_volume,
self.connection_properties)
mock_rbd_cfg.assert_called_once_with(self.connection_properties)
mock_args.assert_called_once_with(self.connection_properties,
mock_rbd_cfg.return_value)
self.assertEqual(2, mock_execute.call_count)
mock_execute.assert_has_calls([
mock.call('which', 'rbd'),
mock.call('rbd', 'map', 'fake_volume', '--pool', 'fake_pool',
mock.sentinel.rbd_args,
root_helper=connector._root_helper, run_as_root=True)
])
mock_delete.assert_called_once_with(mock_rbd_cfg.return_value)
@mock.patch('os_brick.initiator.linuxrbd.rbd')
@mock.patch('os_brick.initiator.linuxrbd.rados')
@mock.patch.object(linuxrbd.RBDVolumeIOWrapper, 'close')
def test_disconnect_volume(self, volume_close, mock_rados, mock_rbd):
"""Test the disconnect volume case."""
rbd_connector = rbd.RBDConnector(None)
device_info = rbd_connector.connect_volume(self.connection_properties)
rbd_connector.disconnect_volume(
self.connection_properties, device_info)
self.assertEqual(1, volume_close.call_count)
@ddt.data(
"""
[{"id":"0","pool":"pool","device":"/dev/rbd0","name":"image"},
{"id":"1","pool":"pool","device":"/dev/rdb1","name":"image_2"}]
""", # new-style output (ceph 13.2.0+)
"""
{"0":{"pool":"pool","device":"/dev/rbd0","name":"image"},
"1":{"pool":"pool","device":"/dev/rdb1","name":"image_2"}}
""", # old-style output
)
@mock.patch('os_brick.privileged.rbd.delete_if_exists')
@mock.patch.object(priv_rootwrap, 'execute', return_value=None)
def test_disconnect_local_volume(self, rbd_map_out, mock_execute,
mock_delete):
"""Test the disconnect volume case with local attach."""
rbd_connector = rbd.RBDConnector(None, do_local_attach=True)
conn = {'name': 'pool/image',
'auth_username': 'fake_user',
'hosts': ['192.168.10.2'],
'ports': ['6789']}
mock_execute.side_effect = [(rbd_map_out, None), (None, None)]
show_cmd = ['rbd', 'showmapped', '--format=json', '--id', 'fake_user',
'--mon_host', '192.168.10.2:6789']
unmap_cmd = ['rbd', 'unmap', '/dev/rbd0', '--id', 'fake_user',
'--mon_host', '192.168.10.2:6789']
rbd_connector.disconnect_volume(conn, None)
# Assert that showmapped is used before we unmap the root device
mock_execute.assert_has_calls([
mock.call(*show_cmd, root_helper=None, run_as_root=True),
mock.call(*unmap_cmd, root_helper=None, run_as_root=True)])
mock_delete.assert_not_called()
@mock.patch('os_brick.privileged.rbd.delete_if_exists')
@mock.patch.object(rbd.RBDConnector, '_find_root_device')
@mock.patch.object(rbd.RBDConnector, '_execute')
def test_disconnect_local_volume_non_openstack(self, mock_execute,
mock_find, mock_delete):
connector = rbd.RBDConnector(None, do_local_attach=True)
mock_find.return_value = '/dev/rbd0'
connector.disconnect_volume(self.connection_properties,
{'conf': mock.sentinel.conf})
mock_find.assert_called_once_with(self.connection_properties,
mock.sentinel.conf)
mock_execute.assert_called_once_with(
'rbd', 'unmap', '/dev/rbd0', '--id', 'fake_user', '--mon_host',
'192.168.10.2:6789', '--conf', mock.sentinel.conf,
root_helper=connector._root_helper, run_as_root=True)
mock_delete.assert_called_once_with(mock.sentinel.conf)
@mock.patch.object(priv_rootwrap, 'execute', return_value=None)
def test_disconnect_local_volume_no_mapping(self, mock_execute):
rbd_connector = rbd.RBDConnector(None, do_local_attach=True)
conn = {'name': 'pool/not_mapped',
'auth_username': 'fake_user',
'hosts': ['192.168.10.2'],
'ports': ['6789']}
mock_execute.return_value = ("""
{"0":{"pool":"pool","device":"/dev/rbd0","name":"pool-image"},
"1":{"pool":"pool","device":"/dev/rdb1","name":"pool-image_2"}}""", None)
show_cmd = ['rbd', 'showmapped', '--format=json', '--id', 'fake_user',
'--mon_host', '192.168.10.2:6789']
rbd_connector.disconnect_volume(conn, None)
# Assert that only showmapped is called when no mappings are found
mock_execute.called_once_with(*show_cmd, root_helper=None,
run_as_root=True)
@mock.patch.object(priv_rootwrap, 'execute', return_value=None)
def test_disconnect_local_volume_no_mappings(self, mock_execute):
rbd_connector = rbd.RBDConnector(None, do_local_attach=True)
conn = {'name': 'pool/image',
'auth_username': 'fake_user',
'hosts': ['192.168.10.2'],
'ports': ['6789']}
mock_execute.return_value = ("{}", None)
show_cmd = ['rbd', 'showmapped', '--format=json', '--id', 'fake_user',
'--mon_host', '192.168.10.2:6789']
rbd_connector.disconnect_volume(conn, None)
# Assert that only showmapped is called when no mappings are found
mock_execute.called_once_with(*show_cmd, root_helper=None,
run_as_root=True)
@mock.patch('oslo_utils.fileutils.delete_if_exists')
@mock.patch.object(rbd.RBDConnector, '_get_rbd_handle')
def test_extend_volume_handle(self, mock_handle, mock_delete):
connector = rbd.RBDConnector(None)
res = connector.extend_volume(self.connection_properties)
mock_handle.assert_called_once_with(self.connection_properties)
mock_handle.return_value.seek.assert_called_once_with(0, 2)
mock_handle.return_value.tell.assert_called_once_with()
self.assertIs(mock_handle().tell(), res)
mock_delete.assert_called_once_with(mock_handle().rbd_conf)
mock_handle.return_value.close.assert_called_once_with()
@mock.patch('oslo_utils.fileutils.delete_if_exists')
@mock.patch.object(rbd.RBDConnector, '_get_rbd_handle')
def test_extend_volume_handle_fail(self, mock_handle, mock_delete):
mock_handle.return_value.seek.side_effect = ValueError
connector = rbd.RBDConnector(None)
self.assertRaises(ValueError, connector.extend_volume,
self.connection_properties)
mock_handle.assert_called_once_with(self.connection_properties)
mock_handle.return_value.seek.assert_called_once_with(0, 2)
mock_handle().tell.assert_not_called()
mock_delete.assert_called_once_with(mock_handle.return_value.rbd_conf)
mock_handle.return_value.close.assert_called_once_with()
@mock.patch.object(rbd, 'open')
@mock.patch('os_brick.privileged.rbd.delete_if_exists')
@mock.patch.object(rbd.RBDConnector, '_find_root_device')
@mock.patch.object(rbd.RBDConnector, 'create_non_openstack_config')
def test_extend_volume_block(self, mock_config, mock_find, mock_delete,
mock_open):
mock_find.return_value = '/dev/rbd1'
file_handle = mock_open.return_value.__enter__.return_value
file_handle.read.return_value = '123456789'
connector = rbd.RBDConnector(None, do_local_attach=True)
res = connector.extend_volume(self.connection_properties)
mock_config.assert_called_once_with(self.connection_properties)
mock_find.assert_called_once_with(self.connection_properties,
mock_config.return_value)
mock_delete.assert_called_once_with(mock_config.return_value)
mock_open.assert_called_once_with('/sys/devices/rbd/1/size')
file_handle.read.assert_called_once_with()
self.assertEqual(123456789, res)
@mock.patch.object(rbd, 'open')
@mock.patch('os_brick.privileged.rbd.delete_if_exists')
@mock.patch.object(rbd.RBDConnector, '_find_root_device')
@mock.patch.object(rbd.RBDConnector, 'create_non_openstack_config')
def test_extend_volume_no_device_local(self, mock_config, mock_find,
mock_delete, mock_open):
mock_find.return_value = None
connector = rbd.RBDConnector(None, do_local_attach=True)
self.assertRaises(exception.BrickException, connector.extend_volume,
self.connection_properties)
mock_config.assert_called_once_with(self.connection_properties)
mock_find.assert_called_once_with(self.connection_properties,
mock_config.return_value)
mock_delete.assert_called_once_with(mock_config.return_value)
mock_open.assert_not_called()
def test__get_rbd_args(self):
res = rbd.RBDConnector._get_rbd_args(self.connection_properties, None)
expected = ['--id', self.user,
'--mon_host', self.hosts[0] + ':' + self.ports[0]]
self.assertEqual(expected, res)
def test__get_rbd_args_with_conf(self):
res = rbd.RBDConnector._get_rbd_args(self.connection_properties,
mock.sentinel.conf_path)
expected = ['--id', self.user,
'--mon_host', self.hosts[0] + ':' + self.ports[0],
'--conf', mock.sentinel.conf_path]
self.assertEqual(expected, res)
@mock.patch.object(rbd.RBDConnector, '_get_rbd_args')
@mock.patch.object(rbd.RBDConnector, '_execute')
def test_find_root_device(self, mock_execute, mock_args):
mock_args.return_value = [mock.sentinel.rbd_args]
mock_execute.return_value = (
'{"0":{"pool":"pool","device":"/dev/rdb0","name":"image"},'
'"1":{"pool":"pool","device":"/dev/rbd1","name":"fake_volume"}}',
'stderr')
connector = rbd.RBDConnector(None)
res = connector._find_root_device(self.connection_properties,
mock.sentinel.conf)
mock_args.assert_called_once_with(self.connection_properties,
mock.sentinel.conf)
mock_execute.assert_called_once_with(
'rbd', 'showmapped', '--format=json', mock.sentinel.rbd_args,
root_helper=connector._root_helper, run_as_root=True)
self.assertEqual('/dev/rbd1', res)
@mock.patch.object(rbd.RBDConnector, '_check_valid_device')
@mock.patch('os_brick.privileged.rbd.check_valid_path')
@mock.patch.object(rbd, 'open')
def test_check_valid_device_handle_no_path(self, mock_open, check_path,
check_device):
connector = rbd.RBDConnector(None)
res = connector.check_valid_device(None)
self.assertFalse(res)
mock_open.assert_not_called()
check_path.assert_not_called()
check_device.assert_not_called()
@ddt.data(True, False)
@mock.patch.object(rbd.RBDConnector, '_check_valid_device')
@mock.patch('os_brick.privileged.rbd.check_valid_path')
@mock.patch.object(rbd, 'open')
def test_check_valid_device_handle(self, run_as_root, mock_open,
check_path, check_device):
connector = rbd.RBDConnector(None)
res = connector.check_valid_device(mock.sentinel.handle,
run_as_root=run_as_root)
check_device.assert_called_once_with(mock.sentinel.handle)
self.assertIs(check_device.return_value, res)
mock_open.assert_not_called()
check_path.assert_not_called()
@mock.patch.object(rbd.RBDConnector, '_check_valid_device')
@mock.patch('os_brick.privileged.rbd.check_valid_path')
@mock.patch.object(rbd, 'open')
def test_check_valid_device_block_root(self, mock_open, check_path,
check_device):
connector = rbd.RBDConnector(None)
path = '/dev/rbd0'
res = connector.check_valid_device(path, run_as_root=True)
check_path.assert_called_once_with(path)
self.assertEqual(check_path.return_value, res)
mock_open.assert_not_called()
check_device.assert_not_called()
@mock.patch.object(rbd.RBDConnector, '_check_valid_device')
@mock.patch('os_brick.privileged.rbd.check_valid_path')
@mock.patch.object(rbd, 'open')
def test_check_valid_device_block_non_root(self, mock_open, check_path,
check_device):
connector = rbd.RBDConnector(None)
path = '/dev/rbd0'
res = connector.check_valid_device(path, run_as_root=False)
mock_open.assert_called_once_with(path, 'rb')
check_device.assert_called_once_with(mock_open().__enter__())
self.assertIs(check_device.return_value, res)
check_path.assert_not_called()