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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2012, 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.
"""
Unit Tests for rpc.dispatcher
"""
import testtools
from openstack.common import context
from openstack.common.rpc import common as rpc_common
from openstack.common.rpc import dispatcher
class RpcDispatcherTestCase(testtools.TestCase):
class API1(object):
RPC_API_VERSION = '1.0'
def __init__(self):
self.test_method_ctxt = None
self.test_method_arg1 = None
def test_method(self, ctxt, arg1):
self.test_method_ctxt = ctxt
self.test_method_arg1 = arg1
class API2(object):
RPC_API_VERSION = '2.1'
def __init__(self):
self.test_method_ctxt = None
self.test_method_arg1 = None
def test_method(self, ctxt, arg1):
self.test_method_ctxt = ctxt
self.test_method_arg1 = arg1
class API3(object):
RPC_API_VERSION = '3.5'
def __init__(self):
self.test_method_ctxt = None
self.test_method_arg1 = None
def test_method(self, ctxt, arg1):
self.test_method_ctxt = ctxt
self.test_method_arg1 = arg1
def setUp(self):
super(RpcDispatcherTestCase, self).setUp()
self.ctxt = context.RequestContext('fake_user', 'fake_project')
def _test_dispatch(self, version, expectations):
v2 = self.API2()
v3 = self.API3()
disp = dispatcher.RpcDispatcher([v2, v3])
disp.dispatch(self.ctxt, version, 'test_method', arg1=1)
self.assertEqual(v2.test_method_ctxt, expectations[0])
self.assertEqual(v2.test_method_arg1, expectations[1])
self.assertEqual(v3.test_method_ctxt, expectations[2])
self.assertEqual(v3.test_method_arg1, expectations[3])
def test_dispatch(self):
self._test_dispatch('2.1', (self.ctxt, 1, None, None))
self._test_dispatch('3.5', (None, None, self.ctxt, 1))
def test_dispatch_lower_minor_version(self):
self._test_dispatch('2.0', (self.ctxt, 1, None, None))
self._test_dispatch('3.1', (None, None, self.ctxt, 1))
def test_dispatch_higher_minor_version(self):
self.assertRaises(
rpc_common.UnsupportedRpcVersion,
self._test_dispatch, '2.6', (None, None, None, None))
self.assertRaises(
rpc_common.UnsupportedRpcVersion,
self._test_dispatch, '3.6', (None, None, None, None))
def test_dispatch_lower_major_version(self):
self.assertRaises(
rpc_common.UnsupportedRpcVersion,
self._test_dispatch, '1.0', (None, None, None, None))
def test_dispatch_higher_major_version(self):
self.assertRaises(
rpc_common.UnsupportedRpcVersion,
self._test_dispatch, '4.0', (None, None, None, None))
def test_dispatch_no_version_uses_v1(self):
v1 = self.API1()
disp = dispatcher.RpcDispatcher([v1])
disp.dispatch(self.ctxt, None, 'test_method', arg1=1)
self.assertEqual(v1.test_method_ctxt, self.ctxt)
self.assertEqual(v1.test_method_arg1, 1)
def test_missing_method_version_match(self):
v1 = self.API1()
disp = dispatcher.RpcDispatcher([v1])
self.assertRaises(AttributeError,
disp.dispatch,
self.ctxt, "1.0", "does_not_exist")
def test_missing_method_version_no_match(self):
v1 = self.API1()
disp = dispatcher.RpcDispatcher([v1])
self.assertRaises(rpc_common.UnsupportedRpcVersion,
disp.dispatch,
self.ctxt, "2.0", "does_not_exist")
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