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# Copyright 2012 OpenStack Foundation
# Copyright 2013 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.
from oslo import messaging
from tests import utils as test_utils
class TestExpectedExceptions(test_utils.BaseTestCase):
def test_exception(self):
e = None
try:
try:
raise ValueError()
except Exception:
raise messaging.ExpectedException()
except messaging.ExpectedException as e:
self.assertIsInstance(e, messaging.ExpectedException)
self.assertTrue(hasattr(e, 'exc_info'))
self.assertIsInstance(e.exc_info[1], ValueError)
def test_decorator_expected(self):
class FooException(Exception):
pass
@messaging.expected_exceptions(FooException)
def naughty():
raise FooException()
self.assertRaises(messaging.ExpectedException, naughty)
def test_decorator_expected_subclass(self):
class FooException(Exception):
pass
class BarException(FooException):
pass
@messaging.expected_exceptions(FooException)
def naughty():
raise BarException()
self.assertRaises(messaging.ExpectedException, naughty)
def test_decorator_unexpected(self):
class FooException(Exception):
pass
@messaging.expected_exceptions(FooException)
def really_naughty():
raise ValueError()
self.assertRaises(ValueError, really_naughty)
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