4531490b05
OpenStack projects should be using mock rather than mox. oslo.messaging was using mox's stubs via oslotest rather than mock.patch.object. The code is converted to use mock.patch.object via fixtures.MockPatchObject. Change-Id: I19490b4e8211c35b237ebfd38bf2f8b8b44cbf61
130 lines
3.5 KiB
Python
130 lines
3.5 KiB
Python
|
|
# 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.
|
|
|
|
import threading
|
|
import uuid
|
|
|
|
import fixtures
|
|
import testscenarios
|
|
|
|
from oslo_messaging._drivers import pool
|
|
from oslo_messaging.tests import utils as test_utils
|
|
|
|
load_tests = testscenarios.load_tests_apply_scenarios
|
|
|
|
|
|
class PoolTestCase(test_utils.BaseTestCase):
|
|
|
|
_max_size = [
|
|
('default_size', dict(max_size=None, n_iters=4)),
|
|
('set_max_size', dict(max_size=10, n_iters=10)),
|
|
]
|
|
|
|
_create_error = [
|
|
('no_create_error', dict(create_error=False)),
|
|
('create_error', dict(create_error=True)),
|
|
]
|
|
|
|
@classmethod
|
|
def generate_scenarios(cls):
|
|
cls.scenarios = testscenarios.multiply_scenarios(cls._max_size,
|
|
cls._create_error)
|
|
|
|
class TestPool(pool.Pool):
|
|
|
|
def create(self):
|
|
return uuid.uuid4()
|
|
|
|
class ThreadWaitWaiter(object):
|
|
|
|
"""A gross hack.
|
|
|
|
Stub out the condition variable's wait() method and spin until it
|
|
has been called by each thread.
|
|
"""
|
|
|
|
def __init__(self, cond, n_threads, test):
|
|
self.cond = cond
|
|
self.test = test
|
|
self.n_threads = n_threads
|
|
self.n_waits = 0
|
|
self.orig_wait = cond.wait
|
|
|
|
def count_waits(**kwargs):
|
|
self.n_waits += 1
|
|
self.orig_wait(**kwargs)
|
|
self.test.useFixture(fixtures.MockPatchObject(
|
|
self.cond, 'wait', count_waits))
|
|
|
|
def wait(self):
|
|
while self.n_waits < self.n_threads:
|
|
pass
|
|
self.test.useFixture(fixtures.MockPatchObject(
|
|
self.cond, 'wait', self.orig_wait))
|
|
|
|
def test_pool(self):
|
|
kwargs = {}
|
|
if self.max_size is not None:
|
|
kwargs['max_size'] = self.max_size
|
|
|
|
p = self.TestPool(**kwargs)
|
|
|
|
if self.create_error:
|
|
def create_error():
|
|
raise RuntimeError
|
|
orig_create = p.create
|
|
self.useFixture(fixtures.MockPatchObject(
|
|
p, 'create', create_error))
|
|
self.assertRaises(RuntimeError, p.get)
|
|
self.useFixture(fixtures.MockPatchObject(
|
|
p, 'create', orig_create))
|
|
|
|
objs = []
|
|
for i in range(self.n_iters):
|
|
objs.append(p.get())
|
|
self.assertIsInstance(objs[i], uuid.UUID)
|
|
|
|
def wait_for_obj():
|
|
o = p.get()
|
|
self.assertIn(o, objs)
|
|
|
|
waiter = self.ThreadWaitWaiter(p._cond, self.n_iters, self)
|
|
|
|
threads = []
|
|
for i in range(self.n_iters):
|
|
t = threading.Thread(target=wait_for_obj)
|
|
t.start()
|
|
threads.append(t)
|
|
|
|
waiter.wait()
|
|
|
|
for o in objs:
|
|
p.put(o)
|
|
|
|
for t in threads:
|
|
t.join()
|
|
|
|
for o in objs:
|
|
p.put(o)
|
|
|
|
for o in p.iter_free():
|
|
self.assertIn(o, objs)
|
|
objs.remove(o)
|
|
|
|
self.assertEqual([], objs)
|
|
|
|
|
|
PoolTestCase.generate_scenarios()
|