OpenStack Block Storage (Cinder)
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# Copyright 2019, Red Hat Inc.
# All Rights Reserved.
#
# 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.
"""Tests for Volume Manager Code."""
import mock
from cinder import exception
from cinder.message import message_field
from cinder.tests.unit import volume as base
from cinder.volume import manager as vol_manager
class VolumeManagerTestCase(base.BaseVolumeTestCase):
@mock.patch('cinder.message.api.API.create')
@mock.patch('cinder.utils.require_driver_initialized')
@mock.patch('cinder.volume.manager.VolumeManager.'
'_notify_about_snapshot_usage')
def test_create_snapshot_driver_not_initialized_generates_user_message(
self, fake_notify, fake_init, fake_msg_create):
manager = vol_manager.VolumeManager()
fake_init.side_effect = exception.CinderException()
fake_snapshot = mock.MagicMock(id='22')
fake_context = mock.MagicMock()
fake_context.elevated.return_value = fake_context
ex = self.assertRaises(exception.CinderException,
manager.create_snapshot,
fake_context,
fake_snapshot)
# make sure a user message was generated
fake_msg_create.assert_called_once_with(
fake_context,
action=message_field.Action.SNAPSHOT_CREATE,
resource_type=message_field.Resource.VOLUME_SNAPSHOT,
resource_uuid=fake_snapshot['id'],
exception=ex,
detail=message_field.Detail.SNAPSHOT_CREATE_ERROR)
@mock.patch('cinder.message.api.API.create')
@mock.patch('cinder.utils.require_driver_initialized')
@mock.patch('cinder.volume.manager.VolumeManager.'
'_notify_about_snapshot_usage')
def test_create_snapshot_metadata_update_failure_generates_user_message(
self, fake_notify, fake_init, fake_msg_create):
manager = vol_manager.VolumeManager()
fake_driver = mock.MagicMock()
fake_driver.create_snapshot.return_value = False
manager.driver = fake_driver
fake_vol_ref = mock.MagicMock()
fake_vol_ref.bootable.return_value = True
fake_db = mock.MagicMock()
fake_db.volume_get.return_value = fake_vol_ref
fake_exp = exception.CinderException()
fake_db.volume_glance_metadata_copy_to_snapshot.side_effect = fake_exp
manager.db = fake_db
fake_snapshot = mock.MagicMock(id='86')
fake_context = mock.MagicMock()
fake_context.elevated.return_value = fake_context
self.assertRaises(exception.CinderException,
manager.create_snapshot,
fake_context,
fake_snapshot)
# make sure a user message was generated
fake_msg_create.assert_called_once_with(
fake_context,
action=message_field.Action.SNAPSHOT_CREATE,
resource_type=message_field.Resource.VOLUME_SNAPSHOT,
resource_uuid=fake_snapshot['id'],
exception=fake_exp,
detail=message_field.Detail.SNAPSHOT_UPDATE_METADATA_FAILED)
@mock.patch('cinder.message.api.API.create')
@mock.patch('cinder.utils.require_driver_initialized')
@mock.patch('cinder.volume.manager.VolumeManager.'
'_notify_about_snapshot_usage')
def test_delete_snapshot_when_busy_generates_user_message(
self, fake_notify, fake_init, fake_msg_create):
manager = vol_manager.VolumeManager()
fake_snapshot = mock.MagicMock(id='0', project_id='1')
fake_context = mock.MagicMock()
fake_context.elevated.return_value = fake_context
fake_exp = exception.SnapshotIsBusy(snapshot_name='Fred')
fake_init.side_effect = fake_exp
manager.delete_snapshot(fake_context, fake_snapshot)
# make sure a user message was generated
fake_msg_create.assert_called_once_with(
fake_context,
action=message_field.Action.SNAPSHOT_DELETE,
resource_type=message_field.Resource.VOLUME_SNAPSHOT,
resource_uuid=fake_snapshot['id'],
exception=fake_exp)
@mock.patch('cinder.message.api.API.create')
@mock.patch('cinder.utils.require_driver_initialized')
@mock.patch('cinder.volume.manager.VolumeManager.'
'_notify_about_snapshot_usage')
def test_delete_snapshot_general_exception_generates_user_message(
self, fake_notify, fake_init, fake_msg_create):
manager = vol_manager.VolumeManager()
fake_snapshot = mock.MagicMock(id='0', project_id='1')
fake_context = mock.MagicMock()
fake_context.elevated.return_value = fake_context
class LocalException(Exception):
pass
fake_exp = LocalException()
# yeah, this isn't where it would be coming from in real life,
# but it saves mocking out a bunch more stuff
fake_init.side_effect = fake_exp
self.assertRaises(LocalException,
manager.delete_snapshot,
fake_context,
fake_snapshot)
# make sure a user message was generated
fake_msg_create.assert_called_once_with(
fake_context,
action=message_field.Action.SNAPSHOT_DELETE,
resource_type=message_field.Resource.VOLUME_SNAPSHOT,
resource_uuid=fake_snapshot['id'],
exception=fake_exp,
detail=message_field.Detail.SNAPSHOT_DELETE_ERROR)