5cd9f3c92f
Due to https://bitbucket.org/ncoghlan/contextlib2/issue/17/ it appears the the exit stack has issues with locks on py2.6 so use a smaller implementation that does the same thing instead.
85 lines
2.5 KiB
Python
85 lines
2.5 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright (C) 2015 Yahoo! Inc. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import threading
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import fasteners
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from fasteners import test
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class Locked(object):
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def __init__(self):
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self._lock = threading.Lock()
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@fasteners.locked
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def i_am_locked(self, cb):
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cb(self._lock.locked())
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def i_am_not_locked(self, cb):
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cb(self._lock.locked())
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class ManyLocks(object):
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def __init__(self, amount):
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self._lock = []
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for _i in range(0, amount):
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self._lock.append(threading.Lock())
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@fasteners.locked
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def i_am_locked(self, cb):
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gotten = [lock.locked() for lock in self._lock]
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cb(gotten)
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def i_am_not_locked(self, cb):
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gotten = [lock.locked() for lock in self._lock]
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cb(gotten)
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class RWLocked(object):
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def __init__(self):
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self._lock = fasteners.ReaderWriterLock()
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@fasteners.read_locked
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def i_am_read_locked(self, cb):
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cb(self._lock.owner)
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@fasteners.write_locked
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def i_am_write_locked(self, cb):
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cb(self._lock.owner)
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def i_am_not_locked(self, cb):
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cb(self._lock.owner)
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class DecoratorsTest(test.TestCase):
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def test_locked(self):
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obj = Locked()
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obj.i_am_locked(lambda is_locked: self.assertTrue(is_locked))
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obj.i_am_not_locked(lambda is_locked: self.assertFalse(is_locked))
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def test_many_locked(self):
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obj = ManyLocks(10)
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obj.i_am_locked(lambda gotten: self.assertTrue(all(gotten)))
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obj.i_am_not_locked(lambda gotten: self.assertEqual(0, sum(gotten)))
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def test_read_write_locked(self):
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reader = fasteners.ReaderWriterLock.READER
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writer = fasteners.ReaderWriterLock.WRITER
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obj = RWLocked()
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obj.i_am_write_locked(lambda owner: self.assertEqual(owner, writer))
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obj.i_am_read_locked(lambda owner: self.assertEqual(owner, reader))
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obj.i_am_not_locked(lambda owner: self.assertIsNone(owner))
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