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# -*- coding: utf-8 -*-
# Copyright (C) 2013 Yahoo! Inc. 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.
import testtools
from taskflow import test
from taskflow.types import futures
from taskflow.utils import async_utils as au
from taskflow.utils import eventlet_utils as eu
class WaitForAnyTestsMixin(object):
timeout = 0.001
def test_waits_and_finishes(self):
def foo():
pass
with self._make_executor(2) as e:
fs = [e.submit(foo), e.submit(foo)]
# this test assumes that our foo will end within 10 seconds
done, not_done = au.wait_for_any(fs, 10)
self.assertIn(len(done), (1, 2))
self.assertTrue(any(f in done for f in fs))
def test_not_done_futures(self):
fs = [futures.Future(), futures.Future()]
done, not_done = au.wait_for_any(fs, self.timeout)
self.assertEqual(len(done), 0)
self.assertEqual(len(not_done), 2)
def test_mixed_futures(self):
f1 = futures.Future()
f2 = futures.Future()
f2.set_result(1)
done, not_done = au.wait_for_any([f1, f2], self.timeout)
self.assertEqual(len(done), 1)
self.assertEqual(len(not_done), 1)
self.assertIs(not_done.pop(), f1)
self.assertIs(done.pop(), f2)
@testtools.skipIf(not eu.EVENTLET_AVAILABLE, 'eventlet is not available')
class AsyncUtilsEventletTest(test.TestCase,
WaitForAnyTestsMixin):
def _make_executor(self, max_workers):
return futures.GreenThreadPoolExecutor(max_workers=max_workers)
class AsyncUtilsThreadedTest(test.TestCase,
WaitForAnyTestsMixin):
def _make_executor(self, max_workers):
return futures.ThreadPoolExecutor(max_workers=max_workers)
class MakeCompletedFutureTest(test.TestCase):
def test_make_completed_future(self):
result = object()
future = au.make_completed_future(result)
self.assertTrue(future.done())
self.assertIs(future.result(), result)
def test_make_completed_future_exception(self):
result = IOError("broken")
future = au.make_completed_future(result, exception=True)
self.assertTrue(future.done())
self.assertRaises(IOError, future.result)
self.assertIsNotNone(future.exception())
class AsyncUtilsSynchronousTest(test.TestCase,
WaitForAnyTestsMixin):
def _make_executor(self, max_workers):
return futures.SynchronousExecutor()
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