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# 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.
import mock
from oslo_utils.fixture import uuidsentinel as uuids
from nova.compute import api as compute_api
from nova import context as nova_context
from nova import exception
from nova import objects
from nova import test
from nova.tests import fixtures as nova_fixtures
class ComputeAPITestCase(test.NoDBTestCase):
USES_DB_SELF = True
def setUp(self):
super(ComputeAPITestCase, self).setUp()
self.useFixture(nova_fixtures.Database(database='api'))
@mock.patch('nova.objects.instance_mapping.InstanceMapping.create')
def test_reqspec_buildreq_instmapping_single_transaction(self,
mock_create):
# Simulate a DBError during an INSERT by raising an exception from the
# InstanceMapping.create method.
mock_create.side_effect = test.TestingException('oops')
ctxt = nova_context.RequestContext('fake-user', 'fake-project')
rs = objects.RequestSpec(context=ctxt, instance_uuid=uuids.inst)
# project_id and instance cannot be None
br = objects.BuildRequest(context=ctxt, instance_uuid=uuids.inst,
project_id=ctxt.project_id,
instance=objects.Instance())
im = objects.InstanceMapping(context=ctxt, instance_uuid=uuids.inst)
self.assertRaises(
test.TestingException,
compute_api.API._create_reqspec_buildreq_instmapping, ctxt, rs, br,
im)
# Since the instance mapping failed to INSERT, we should not have
# written a request spec record or a build request record.
self.assertRaises(
exception.RequestSpecNotFound,
objects.RequestSpec.get_by_instance_uuid, ctxt, uuids.inst)
self.assertRaises(
exception.BuildRequestNotFound,
objects.BuildRequest.get_by_instance_uuid, ctxt, uuids.inst)
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