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Viewing changes to bzrlib/tests/test_lockable_files.py

  • Committer: Canonical.com Patch Queue Manager
  • Date: 2008-03-16 14:01:20 UTC
  • mfrom: (3280.2.5 integration)
  • Revision ID: pqm@pqm.ubuntu.com-20080316140120-i3yq8yr1l66m11h7
Start 1.4 development

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bzrlib/tests/test_lockable_files.py
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# Copyright (C) 2005, 2006, 2008 Canonical Ltd
 
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# Copyright (C) 2005, 2006 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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    )
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from bzrlib.errors import BzrBadParameterNotString, NoSuchFile, ReadOnlyError
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from bzrlib.lockable_files import LockableFiles, TransportLock
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from bzrlib.symbol_versioning import (
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    deprecated_in,
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    )
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from bzrlib.tests import (
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    TestCaseInTempDir,
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    TestNotApplicable,
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    )
 
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from bzrlib.tests import TestCaseInTempDir
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from bzrlib.tests.test_smart import TestCaseWithSmartMedium
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from bzrlib.tests.test_transactions import DummyWeave
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from bzrlib.transactions import (PassThroughTransaction,
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# these tests are applied in each parameterized suite for LockableFiles
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#
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# they use an old style of parameterization, but we want to remove this class
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# so won't modernize them now. - mbp 20080430
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class _TestLockableFiles_mixin(object):
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    def test_read_write(self):
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        self.assertRaises(NoSuchFile,
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            self.applyDeprecated,
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            deprecated_in((1, 5, 0)),
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            self.lockable.get, 'foo')
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        self.assertRaises(NoSuchFile,
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            self.applyDeprecated,
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            deprecated_in((1, 5, 0)),
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            self.lockable.get_utf8, 'foo')
 
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        self.assertRaises(NoSuchFile, self.lockable.get, 'foo')
 
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        self.assertRaises(NoSuchFile, self.lockable.get_utf8, 'foo')
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        self.lockable.lock_write()
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        try:
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            unicode_string = u'bar\u1234'
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            self.assertEqual(4, len(unicode_string))
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            byte_string = unicode_string.encode('utf-8')
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            self.assertEqual(6, len(byte_string))
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            self.assertRaises(UnicodeEncodeError,
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                self.applyDeprecated,
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                deprecated_in((1, 6, 0)),
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                self.lockable.put, 'foo',
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                StringIO(unicode_string))
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            self.applyDeprecated(
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                deprecated_in((1, 6, 0)),
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                self.lockable.put,
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                'foo', StringIO(byte_string))
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            byte_stream = self.applyDeprecated(
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                deprecated_in((1, 5, 0)),
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                self.lockable.get,
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                'foo')
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            self.assertEqual(byte_string, byte_stream.read())
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            unicode_stream = self.applyDeprecated(
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                deprecated_in((1, 5, 0)),
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                self.lockable.get_utf8,
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                'foo')
 
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            self.assertRaises(UnicodeEncodeError, self.lockable.put, 'foo',
 
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                              StringIO(unicode_string))
 
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            self.lockable.put('foo', StringIO(byte_string))
 
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            self.assertEqual(byte_string,
 
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                             self.lockable.get('foo').read())
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            self.assertEqual(unicode_string,
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                unicode_stream.read())
 
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                             self.lockable.get_utf8('foo').read())
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            self.assertRaises(BzrBadParameterNotString,
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                self.applyDeprecated,
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                deprecated_in((1, 6, 0)),
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                self.lockable.put_utf8,
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                'bar',
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                StringIO(unicode_string))
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            self.applyDeprecated(
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                deprecated_in((1, 6, 0)),
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                self.lockable.put_utf8,
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                'bar',
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                unicode_string)
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            unicode_stream = self.applyDeprecated(
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                deprecated_in((1, 5, 0)),
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                self.lockable.get_utf8,
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                'bar')
 
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                              self.lockable.put_utf8,
 
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                              'bar',
 
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                              StringIO(unicode_string)
 
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                              )
 
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            self.lockable.put_utf8('bar', unicode_string)
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            self.assertEqual(unicode_string,
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                unicode_stream.read())
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            byte_stream = self.applyDeprecated(
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                deprecated_in((1, 5, 0)),
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                self.lockable.get,
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                'bar')
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            self.assertEqual(byte_string, byte_stream.read())
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            self.applyDeprecated(
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                deprecated_in((1, 6, 0)),
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                self.lockable.put_bytes,
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                'raw', 'raw\xffbytes')
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            byte_stream = self.applyDeprecated(
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                deprecated_in((1, 5, 0)),
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                self.lockable.get,
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                'raw')
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            self.assertEqual('raw\xffbytes', byte_stream.read())
 
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                             self.lockable.get_utf8('bar').read())
 
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            self.assertEqual(byte_string,
 
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                             self.lockable.get('bar').read())
 
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            self.lockable.put_bytes('raw', 'raw\xffbytes')
 
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            self.assertEqual('raw\xffbytes',
 
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                             self.lockable.get('raw').read())
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        finally:
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            self.lockable.unlock()
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    def test_locks(self):
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        self.lockable.lock_read()
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        try:
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            self.assertRaises(ReadOnlyError, self.lockable.put, 'foo',
 
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            self.assertRaises(ReadOnlyError, self.lockable.put, 'foo', 
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                              StringIO('bar\u1234'))
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        finally:
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            self.lockable.unlock()
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        except NotImplementedError:
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            # this lock cannot be broken
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            self.lockable.unlock()
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            raise TestNotApplicable("%r is not breakable" % (self.lockable,))
 
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            return
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        l2 = self.get_lockable()
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        orig_factory = bzrlib.ui.ui_factory
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        # silent ui - no need for stdout
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            if token is not None:
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                # This test does not apply, because this lockable supports
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                # tokens.
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                raise TestNotApplicable("%r uses tokens" % (self.lockable,))
 
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                return
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            self.assertRaises(errors.TokenLockingNotSupported,
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                              self.lockable.lock_write, token='token')
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        finally:
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        super(TestLockableFiles_TransportLock, self).tearDown()
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        # free the subtransport so that we do not get a 5 second
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        # timeout due to the SFTP connection cache.
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        try:
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            del self.sub_transport
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        except AttributeError:
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            pass
 
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        del self.sub_transport
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    def get_lockable(self):
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        return LockableFiles(self.sub_transport, 'my-lock', TransportLock)