# Copyright (c) 2013 Rackspace, 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.

from zaqar.common import errors
from zaqar.queues import bootstrap
from zaqar.queues.storage import pipeline
from zaqar.queues.storage import pooling
from zaqar.queues.storage import sqlalchemy
from zaqar.queues.transport import wsgi
from zaqar.tests import base


class TestBootstrap(base.TestBase):

    def _bootstrap(self, conf_file):
        self.conf = self.load_conf(conf_file)
        return bootstrap.Bootstrap(self.conf)

    def test_storage_invalid(self):
        bootstrap = self._bootstrap('drivers_storage_invalid.conf')
        self.assertRaises(errors.InvalidDriver,
                          lambda: bootstrap.storage)

    def test_storage_sqlalchemy(self):
        bootstrap = self._bootstrap('wsgi_sqlalchemy.conf')
        self.assertIsInstance(bootstrap.storage, pipeline.DataDriver)
        self.assertIsInstance(bootstrap.storage._storage,
                              sqlalchemy.DataDriver)

    def test_storage_sqlalchemy_pooled(self):
        """Makes sure we can load the pool driver."""
        bootstrap = self._bootstrap('wsgi_sqlalchemy_pooled.conf')
        self.assertIsInstance(bootstrap.storage._storage, pooling.DataDriver)

    def test_transport_invalid(self):
        bootstrap = self._bootstrap('drivers_transport_invalid.conf')
        self.assertRaises(errors.InvalidDriver,
                          lambda: bootstrap.transport)

    def test_transport_wsgi(self):
        bootstrap = self._bootstrap('wsgi_sqlalchemy.conf')
        self.assertIsInstance(bootstrap.transport, wsgi.Driver)