Source code for aodh.tests.functional.storage.test_get_connection

#
# Copyright 2012 New Dream Network, LLC (DreamHost)
# Copyright 2015 Red Hat, Inc.
#
# 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 aodh/storage/
"""
import mock
from oslo_config import fixture as fixture_config
from oslotest import base
import retrying

from aodh import service
from aodh import storage
from aodh.storage import impl_log

import six



[docs]class EngineTest(base.BaseTestCase):

[docs]    def setUp(self):
        super(EngineTest, self).setUp()
        conf = service.prepare_service(argv=[], config_files=[])
        self.CONF = self.useFixture(fixture_config.Config(conf)).conf



[docs]    def test_get_connection(self):
        self.CONF.set_override('connection', 'log://localhost',
                               group='database', enforce_type=True)
        engine = storage.get_connection_from_config(self.CONF)
        self.assertIsInstance(engine, impl_log.Connection)



[docs]    def test_get_connection_no_such_engine(self):
        self.CONF.set_override('connection', 'no-such-engine://localhost',
                               group='database', enforce_type=True)
        self.CONF.set_override('max_retries', 0, 'database',
                               enforce_type=True)
        try:
            storage.get_connection_from_config(self.CONF)
        except RuntimeError as err:
            self.assertIn('no-such-engine', six.text_type(err))




[docs]class ConnectionRetryTest(base.BaseTestCase):

[docs]    def setUp(self):
        super(ConnectionRetryTest, self).setUp()
        conf = service.prepare_service(argv=[], config_files=[])
        self.CONF = self.useFixture(fixture_config.Config(conf)).conf



[docs]    def test_retries(self):
        max_retries = 5
        with mock.patch.object(
                retrying.Retrying, 'should_reject') as retry_reject:
            with mock.patch.object(
                    storage.impl_log.Connection, '__init__') as log_init:

                class ConnectionError(Exception):
                    pass

                def x(a, b):
                    raise ConnectionError

                log_init.side_effect = x
                self.CONF.set_override("connection", "log://", "database",
                                       enforce_type=True)
                self.CONF.set_override("retry_interval", 0.00001, "database",
                                       enforce_type=True)
                self.CONF.set_override("max_retries", max_retries, "database",
                                       enforce_type=True)
                self.assertRaises(ConnectionError,
                                  storage.get_connection_from_config,
                                  self.CONF)
                self.assertEqual(max_retries, retry_reject.call_count)




[docs]class ConnectionConfigTest(base.BaseTestCase):

[docs]    def setUp(self):
        super(ConnectionConfigTest, self).setUp()
        conf = service.prepare_service(argv=[], config_files=[])
        self.CONF = self.useFixture(fixture_config.Config(conf)).conf



[docs]    def test_only_default_url(self):
        self.CONF.set_override("connection", "log://", group="database",
                               enforce_type=True)
        conn = storage.get_connection_from_config(self.CONF)
        self.assertIsInstance(conn, impl_log.Connection)