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OpenStack Study: test_store_base.py

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# Copyright 2011-2013 OpenStack Foundation

# 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.

from glance.common import exception

from glance import store

from glance.store import base as store_base

from glance.tests.unit import base as test_base

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class FakeUnconfigurableStoreDriver(store_base.Store):

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    def configure(self):

        raise exception.BadStoreConfiguration("Unconfigurable store driver.")

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class TestStoreBase(test_base.StoreClearingUnitTest):

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    def setUp(self):

        self.config(default_store='file')

        super(TestStoreBase, self).setUp()

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    def test_exception_to_unicode(self):

        class FakeException(Exception):

            def __str__(self):

                raise UnicodeError()

        exc = Exception('error message')

        ret = store_base._exception_to_unicode(exc)

        self.assertIsInstance(ret, unicode)

        self.assertEqual(ret, 'error message')

        exc = Exception('\xa5 error message')

        ret = store_base._exception_to_unicode(exc)

        self.assertIsInstance(ret, unicode)

        self.assertEqual(ret, ' error message')

        exc = FakeException('\xa5 error message')

        ret = store_base._exception_to_unicode(exc)

        self.assertIsInstance(ret, unicode)

        self.assertEqual(ret, _("Caught '%(exception)s' exception.") %

                         {'exception': 'FakeException'})

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    def test_create_store_exclude_unconfigurable_drivers(self):

        self.config(known_stores=[

            "glance.tests.unit.test_store_base.FakeUnconfigurableStoreDriver",

            "glance.store.filesystem.Store"])

        count = store.create_stores()

        self.assertEqual(9, count)