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# Copyright 2016 Red Hat
#
# 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 contextlib
import mock
from nova.cmd import compute
from nova import context
from nova.db.main import api as db
from nova import exception
from nova import test
@contextlib.contextmanager
def restore_db():
orig = db.DISABLE_DB_ACCESS
try:
yield
finally:
db.DISABLE_DB_ACCESS = orig
class ComputeMainTest(test.NoDBTestCase):
@mock.patch('nova.conductor.api.API.wait_until_ready')
@mock.patch('oslo_reports.guru_meditation_report')
def _call_main(self, mod, gmr, cond):
@mock.patch.object(mod, 'config')
@mock.patch.object(mod, 'service')
def run_main(serv, conf):
mod.main()
run_main()
def test_compute_main_blocks_db(self):
ctxt = context.get_admin_context()
with restore_db():
self._call_main(compute)
self.assertRaises(exception.DBNotAllowed, db.instance_get, ctxt, 2)
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