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Viewing changes to bzrlib/tests/test_lock.py

  • Committer: John Arbash Meinel
  • Date: 2009-07-10 17:50:54 UTC
  • mto: (4523.4.6 1.18-lock-warnings)
  • mto: This revision was merged to the branch mainline in revision 4611.
  • Revision ID: john@arbash-meinel.com-20090710175054-u0mp3mc7pbjd8xgl
Start adding some direct testing for read and write locks.

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bzrlib/tests/test_lock.py
 
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# Copyright (C) 2009 Canonical Ltd
 
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#
 
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# This program is free software; you can redistribute it and/or modify
 
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# it under the terms of the GNU General Public License as published by
 
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# the Free Software Foundation; either version 2 of the License, or
 
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# (at your option) any later version.
 
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#
 
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# This program is distributed in the hope that it will be useful,
 
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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# GNU General Public License for more details.
 
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#
 
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# You should have received a copy of the GNU General Public License
 
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# along with this program; if not, write to the Free Software
 
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 
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"""Tests for OS Locks."""
 
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from bzrlib import (
 
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    lock,
 
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    errors,
 
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    tests,
 
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    )
 
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def load_tests(standard_tests, module, loader):
 
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    """Parameterize tests for all versions of groupcompress."""
 
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    scenarios = []
 
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    for name, write_lock, read_lock in lock._lock_classes:
 
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        scenarios.append((name, {'write_lock': write_lock,
 
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                                 'read_lock': read_lock}))
 
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    suite = loader.suiteClass()
 
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    result = tests.multiply_tests(standard_tests, scenarios, suite)
 
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    return result
 
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class TestOSLock(tests.TestCaseInTempDir):
 
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    # Set by load_tests
 
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    read_lock = None
 
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    write_lock = None
 
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    def test_create_read_lock(self):
 
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        self.build_tree(['a-lock-file'])
 
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        lock = self.read_lock('a-lock-file')
 
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        lock.unlock()
 
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    def test_create_write_lock(self):
 
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        self.build_tree(['a-lock-file'])
 
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        lock = self.write_lock('a-lock-file')
 
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        lock.unlock()
 
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    def test_write_locks_are_exclusive(self):
 
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        self.build_tree(['a-lock-file'])
 
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        lock = self.write_lock('a-lock-file')
 
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        try:
 
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            self.assertRaises(errors.LockContention,
 
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                              self.write_lock, 'a-lock-file')
 
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        finally:
 
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            lock.unlock()