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# Copyright (c) 2025 RedHat 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 the configuration wrapper in Glance Store drivers."""
from oslo_config import cfg
from oslotest import base
import glance_store.driver as driver
store_opts = [
cfg.StrOpt('str_opt', default='STR_OPT'),
cfg.BoolOpt('bool_opt', default=False)
]
more_store_opts = [
cfg.IntOpt('int_opt', default=1),
]
CONF = cfg.CONF
CONF.register_opts(store_opts)
CONF.register_opts(more_store_opts)
class BackendGroupConfigurationTest(base.BaseTestCase):
def override_config(self, name, override, group=None):
"""Cleanly override CONF variables."""
CONF.set_override(name, override, group)
self.addCleanup(CONF.clear_override, name, group)
def test_group_grafts_opts(self):
c = driver.BackendGroupConfiguration(store_opts, config_group='foo')
self.assertEqual(c.str_opt, 'STR_OPT')
self.assertEqual(c.bool_opt, False)
self.assertEqual(c.str_opt, CONF.backend_defaults.str_opt)
self.assertEqual(c.bool_opt, CONF.backend_defaults.bool_opt)
self.assertIsNone(CONF.foo.str_opt)
self.assertIsNone(CONF.foo.bool_opt)
def test_grafting_multiple_opts(self):
c = driver.BackendGroupConfiguration(store_opts, config_group='foo')
c.append_config_values(more_store_opts)
self.assertEqual(c.str_opt, 'STR_OPT')
self.assertEqual(c.bool_opt, False)
self.assertEqual(c.int_opt, 1)
# We get the right values, but they are coming from the
# backend_defaults group of CONF and not the 'foo' one.
self.assertEqual(c.str_opt, CONF.backend_defaults.str_opt)
self.assertEqual(c.bool_opt, CONF.backend_defaults.bool_opt)
self.assertEqual(c.int_opt, CONF.backend_defaults.int_opt)
self.assertIsNone(CONF.foo.str_opt)
self.assertIsNone(CONF.foo.bool_opt)
self.assertIsNone(CONF.foo.int_opt)
def test_backend_specific_value(self):
c = driver.BackendGroupConfiguration(store_opts, config_group='foo')
self.override_config('str_opt', 'bar', group='backend_defaults')
actual_value = c.str_opt
self.assertEqual('bar', actual_value)
self.override_config('str_opt', 'notbar', group='foo')
actual_value = c.str_opt
self.assertEqual('notbar', actual_value)
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