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# Copyright (C) 2005, 2006 by Canonical Ltd
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
from StringIO import StringIO
import bzrlib
from bzrlib.branch import Branch
import bzrlib.errors as errors
from bzrlib.errors import BzrBadParameterNotString, NoSuchFile, ReadOnlyError
from bzrlib.lockable_files import LockableFiles, TransportLock
from bzrlib.lockdir import LockDir
from bzrlib.tests import TestCaseInTempDir
from bzrlib.tests.test_transactions import DummyWeave
from bzrlib.transactions import (PassThroughTransaction,
ReadOnlyTransaction,
WriteTransaction,
)
from bzrlib.transport import get_transport
# these tests are applied in each parameterized suite for LockableFiles
class _TestLockableFiles_mixin(object):
def test_read_write(self):
self.assertRaises(NoSuchFile, self.lockable.get, 'foo')
self.assertRaises(NoSuchFile, self.lockable.get_utf8, 'foo')
self.lockable.lock_write()
try:
unicode_string = u'bar\u1234'
self.assertEqual(4, len(unicode_string))
byte_string = unicode_string.encode('utf-8')
self.assertEqual(6, len(byte_string))
self.assertRaises(UnicodeEncodeError, self.lockable.put, 'foo',
StringIO(unicode_string))
self.lockable.put('foo', StringIO(byte_string))
self.assertEqual(byte_string,
self.lockable.get('foo').read())
self.assertEqual(unicode_string,
self.lockable.get_utf8('foo').read())
self.assertRaises(BzrBadParameterNotString,
self.lockable.put_utf8,
'bar',
StringIO(unicode_string)
)
self.lockable.put_utf8('bar', unicode_string)
self.assertEqual(unicode_string,
self.lockable.get_utf8('bar').read())
self.assertEqual(byte_string,
self.lockable.get('bar').read())
finally:
self.lockable.unlock()
def test_locks(self):
self.lockable.lock_read()
try:
self.assertRaises(ReadOnlyError, self.lockable.put, 'foo',
StringIO('bar\u1234'))
finally:
self.lockable.unlock()
def test_transactions(self):
self.assertIs(self.lockable.get_transaction().__class__,
PassThroughTransaction)
self.lockable.lock_read()
try:
self.assertIs(self.lockable.get_transaction().__class__,
ReadOnlyTransaction)
finally:
self.lockable.unlock()
self.assertIs(self.lockable.get_transaction().__class__,
PassThroughTransaction)
self.lockable.lock_write()
self.assertIs(self.lockable.get_transaction().__class__,
WriteTransaction)
# check that finish is called:
vf = DummyWeave('a')
self.lockable.get_transaction().register_dirty(vf)
self.lockable.unlock()
self.assertTrue(vf.finished)
def test__escape(self):
self.assertEqual('%25', self.lockable._escape('%'))
def test__escape_empty(self):
self.assertEqual('', self.lockable._escape(''))
def test_break_lock(self):
# some locks are not breakable
self.lockable.lock_write()
try:
self.assertRaises(AssertionError, self.lockable.break_lock)
except NotImplementedError:
# this lock cannot be broken
self.lockable.unlock()
return
l2 = self.get_lockable()
orig_factory = bzrlib.ui.ui_factory
# silent ui - no need for stdout
bzrlib.ui.ui_factory = bzrlib.ui.SilentUIFactory()
bzrlib.ui.ui_factory.stdin = StringIO("y\n")
try:
l2.break_lock()
finally:
bzrlib.ui.ui_factory = orig_factory
try:
l2.lock_write()
l2.unlock()
finally:
self.assertRaises(errors.LockBroken, self.lockable.unlock)
self.assertFalse(self.lockable.is_locked())
# This method of adapting tests to parameters is different to
# the TestProviderAdapters used elsewhere, but seems simpler for this
# case.
class TestLockableFiles_TransportLock(TestCaseInTempDir,
_TestLockableFiles_mixin):
def setUp(self):
super(TestLockableFiles_TransportLock, self).setUp()
transport = get_transport('.')
transport.mkdir('.bzr')
self.sub_transport = transport.clone('.bzr')
self.lockable = self.get_lockable()
self.lockable.create_lock()
def tearDown(self):
super(TestLockableFiles_TransportLock, self).tearDown()
# free the subtransport so that we do not get a 5 second
# timeout due to the SFTP connection cache.
del self.sub_transport
def get_lockable(self):
return LockableFiles(self.sub_transport, 'my-lock', TransportLock)
class TestLockableFiles_LockDir(TestCaseInTempDir,
_TestLockableFiles_mixin):
"""LockableFile tests run with LockDir underneath"""
def setUp(self):
super(TestLockableFiles_LockDir, self).setUp()
self.transport = get_transport('.')
self.lockable = self.get_lockable()
# the lock creation here sets mode - test_permissions on branch
# tests that implicitly, but it might be a good idea to factor
# out the mode checking logic and have it applied to loackable files
# directly. RBC 20060418
self.lockable.create_lock()
def get_lockable(self):
return LockableFiles(self.transport, 'my-lock', LockDir)
def test_lock_created(self):
self.assertTrue(self.transport.has('my-lock'))
self.lockable.lock_write()
self.assertTrue(self.transport.has('my-lock/held/info'))
self.lockable.unlock()
self.assertFalse(self.transport.has('my-lock/held/info'))
self.assertTrue(self.transport.has('my-lock'))
# TODO: Test the lockdir inherits the right file and directory permissions
# from the LockableFiles.
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