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Viewing changes to Tools/Scripts/webkitpy/common/system/file_lock_integrationtest.py

  • Committer: Package Import Robot
  • Author(s): Jonathan Riddell
  • Date: 2013-02-18 14:24:18 UTC
  • Revision ID: package-import@ubuntu.com-20130218142418-eon0jmjg3nj438uy
Tags: upstream-2.3
Import upstream version 2.3

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Tools/Scripts/webkitpy/common/system/file_lock_integrationtest.py
 
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#!/usr/bin/env python
 
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# Copyright (C) 2010 Gabor Rapcsanyi (rgabor@inf.u-szeged.hu), University of Szeged
 
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#
 
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# All rights reserved.
 
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#
 
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# Redistribution and use in source and binary forms, with or without
 
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# modification, are permitted provided that the following conditions
 
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# are met:
 
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# 1. Redistributions of source code must retain the above copyright
 
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#    notice, this list of conditions and the following disclaimer.
 
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# 2. Redistributions in binary form must reproduce the above copyright
 
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#    notice, this list of conditions and the following disclaimer in the
 
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#    documentation and/or other materials provided with the distribution.
 
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#
 
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# THIS SOFTWARE IS PROVIDED BY UNIVERSITY OF SZEGED ``AS IS'' AND ANY
 
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# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 
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# PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL UNIVERSITY OF SZEGED OR
 
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 
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# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 
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# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 
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# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 
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# OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
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import os
 
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import tempfile
 
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import unittest
 
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from webkitpy.common.system.file_lock import FileLock
 
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class FileLockTest(unittest.TestCase):
 
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    def setUp(self):
 
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        self._lock_name = "TestWebKit" + str(os.getpid()) + ".lock"
 
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        self._lock_path = os.path.join(tempfile.gettempdir(), self._lock_name)
 
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        self._file_lock1 = FileLock(self._lock_path, 0.1)
 
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        self._file_lock2 = FileLock(self._lock_path, 0.1)
 
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    def tearDown(self):
 
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        self._file_lock1.release_lock()
 
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        self._file_lock2.release_lock()
 
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    def test_lock_lifecycle(self):
 
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        # Create the lock.
 
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        self._file_lock1.acquire_lock()
 
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        self.assertTrue(os.path.exists(self._lock_path))
 
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        # Try to lock again.
 
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        self.assertFalse(self._file_lock2.acquire_lock())
 
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        # Release the lock.
 
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        self._file_lock1.release_lock()
 
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        self.assertFalse(os.path.exists(self._lock_path))
 
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    def test_stuck_lock(self):
 
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        open(self._lock_path, 'w').close()
 
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        self._file_lock1.acquire_lock()
 
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        self._file_lock1.release_lock()