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# Copyright (C) 2007-2011 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
"""Tests for repository write groups."""
from breezy import (
errors,
)
from breezy.tests import (
per_repository,
test_server,
)
from breezy.transport import memory
class TestWriteGroup(per_repository.TestCaseWithRepository):
def test_start_write_group_unlocked_needs_write_lock(self):
repo = self.make_repository('.')
self.assertRaises(errors.NotWriteLocked, repo.start_write_group)
def test_start_write_group_read_locked_needs_write_lock(self):
repo = self.make_repository('.')
repo.lock_read()
try:
self.assertRaises(errors.NotWriteLocked, repo.start_write_group)
finally:
repo.unlock()
def test_start_write_group_write_locked_gets_None(self):
repo = self.make_repository('.')
repo.lock_write()
self.assertEqual(None, repo.start_write_group())
repo.commit_write_group()
repo.unlock()
def test_start_write_group_twice_errors(self):
repo = self.make_repository('.')
repo.lock_write()
repo.start_write_group()
try:
# don't need a specific exception for now - this is
# really to be sure it's used right, not for signalling
# semantic information.
self.assertRaises(errors.BzrError, repo.start_write_group)
finally:
repo.commit_write_group()
repo.unlock()
def test_commit_write_group_does_not_error(self):
repo = self.make_repository('.')
repo.lock_write()
repo.start_write_group()
# commit_write_group can either return None (for repositories without
# isolated transactions) or a hint for pack(). So we only check it
# works in this interface test, because all repositories are exercised.
repo.commit_write_group()
repo.unlock()
def test_unlock_in_write_group(self):
repo = self.make_repository('.')
repo.lock_write()
repo.start_write_group()
# don't need a specific exception for now - this is
# really to be sure it's used right, not for signalling
# semantic information.
self.assertLogsError(errors.BzrError, repo.unlock)
# after this error occurs, the repository is unlocked, and the write
# group is gone. you've had your chance, and you blew it. ;-)
self.assertFalse(repo.is_locked())
self.assertRaises(errors.BzrError, repo.commit_write_group)
self.assertRaises(errors.BzrError, repo.unlock)
def test_is_in_write_group(self):
repo = self.make_repository('.')
self.assertFalse(repo.is_in_write_group())
repo.lock_write()
repo.start_write_group()
self.assertTrue(repo.is_in_write_group())
repo.commit_write_group()
self.assertFalse(repo.is_in_write_group())
# abort also removes the in_write_group status.
repo.start_write_group()
self.assertTrue(repo.is_in_write_group())
repo.abort_write_group()
self.assertFalse(repo.is_in_write_group())
repo.unlock()
def test_abort_write_group_gets_None(self):
repo = self.make_repository('.')
repo.lock_write()
repo.start_write_group()
self.assertEqual(None, repo.abort_write_group())
repo.unlock()
def test_abort_write_group_does_not_raise_when_suppressed(self):
if self.transport_server is test_server.LocalURLServer:
self.transport_server = None
self.vfs_transport_factory = memory.MemoryServer
repo = self.make_repository('repo')
token = repo.lock_write()
self.addCleanup(repo.unlock)
repo.start_write_group()
# Damage the repository on the filesystem
t = self.get_transport('')
t.rename('repo', 'foo')
self.addCleanup(t.rename, 'foo', 'repo')
# abort_write_group will not raise an error, because either an
# exception was not generated, or the exception was caught and
# suppressed. See also test_pack_repository's test of the same name.
self.assertEqual(None, repo.abort_write_group(suppress_errors=True))
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