1#!/usr/bin/env python 2# Copyright (C) 2010 Gabor Rapcsanyi (rgabor@inf.u-szeged.hu), University of Szeged 3# 4# All rights reserved. 5# 6# Redistribution and use in source and binary forms, with or without 7# modification, are permitted provided that the following conditions 8# are met: 9# 1. Redistributions of source code must retain the above copyright 10# notice, this list of conditions and the following disclaimer. 11# 2. Redistributions in binary form must reproduce the above copyright 12# notice, this list of conditions and the following disclaimer in the 13# documentation and/or other materials provided with the distribution. 14# 15# THIS SOFTWARE IS PROVIDED BY UNIVERSITY OF SZEGED ``AS IS'' AND ANY 16# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 18# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL UNIVERSITY OF SZEGED OR 19# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 20# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 22# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 23# OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 25# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 27import os 28import tempfile 29import unittest 30 31from webkitpy.common.system.file_lock import FileLock 32 33 34class FileLockTest(unittest.TestCase): 35 36 def setUp(self): 37 self._lock_name = "TestWebKit" + str(os.getpid()) + ".lock" 38 self._lock_path = os.path.join(tempfile.gettempdir(), self._lock_name) 39 self._file_lock1 = FileLock(self._lock_path, 1) 40 self._file_lock2 = FileLock(self._lock_path, 1) 41 42 def tearDown(self): 43 self._file_lock1.release_lock() 44 self._file_lock2.release_lock() 45 46 def test_lock_lifecycle(self): 47 # Create the lock. 48 self._file_lock1.acquire_lock() 49 self.assertTrue(os.path.exists(self._lock_path)) 50 51 # Try to lock again. 52 self.assertFalse(self._file_lock2.acquire_lock()) 53 54 # Release the lock. 55 self._file_lock1.release_lock() 56 self.assertFalse(os.path.exists(self._lock_path)) 57 58 def test_stuck_lock(self): 59 open(self._lock_path, 'w').close() 60 self._file_lock1.acquire_lock() 61 self._file_lock1.release_lock() 62