#!/usr/bin/env python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
#
# Copyright (c) 2012 Rackspace Hosting
# 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 volume drivers."""

from oslo.config import cfg

from cinder import flags
from cinder.openstack.common import log as logging
from cinder import test
from cinder.volume import configuration
from cinder.volume import driver


LOG = logging.getLogger(__name__)
FLAGS = flags.FLAGS


volume_opts = [
    cfg.StrOpt('str_opt', default='STR_OPT'),
    cfg.BoolOpt('bool_opt', default=False)
]
more_volume_opts = [
    cfg.IntOpt('int_opt', default=1),
]

FLAGS.register_opts(volume_opts)
FLAGS.register_opts(more_volume_opts)


class VolumeConfigurationTest(test.TestCase):
    def setUp(self):
        super(VolumeConfigurationTest, self).setUp()

    def tearDown(self):
        super(VolumeConfigurationTest, self).tearDown()

    def test_group_grafts_opts(self):
        c = configuration.Configuration(volume_opts, config_group='foo')
        self.assertEquals(c.str_opt, FLAGS.foo.str_opt)
        self.assertEquals(c.bool_opt, FLAGS.foo.bool_opt)

    def test_opts_no_group(self):
        c = configuration.Configuration(volume_opts)
        self.assertEquals(c.str_opt, FLAGS.str_opt)
        self.assertEquals(c.bool_opt, FLAGS.bool_opt)

    def test_grafting_multiple_opts(self):
        c = configuration.Configuration(volume_opts, config_group='foo')
        c.append_config_values(more_volume_opts)
        self.assertEquals(c.str_opt, FLAGS.foo.str_opt)
        self.assertEquals(c.bool_opt, FLAGS.foo.bool_opt)
        self.assertEquals(c.int_opt, FLAGS.foo.int_opt)

    def test_safe_get(self):
        c = configuration.Configuration(volume_opts, config_group='foo')
        self.assertEquals(c.safe_get('none_opt'), None)
