~bzr-pqm/bzr/bzr.dev

# Copyright (C) 2006 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

"""Tests for branch break-lock behaviour."""

from cStringIO import StringIO

import bzrlib

import bzrlib.errors as errors

from bzrlib.tests import TestCase, TestCaseWithTransport, TestNotApplicable

from bzrlib.tests.branch_implementations.test_branch import TestCaseWithBranch

class TestBreakLock(TestCaseWithBranch):

    def setUp(self):

        super(TestBreakLock, self).setUp()

        self.unused_branch = self.make_branch('branch')

        self.branch = self.unused_branch.bzrdir.open_branch()

        # we want a UI factory that accepts canned input for the tests:

        # while SilentUIFactory still accepts stdin, we need to customise

        # ours

        self.old_factory = bzrlib.ui.ui_factory

        self.addCleanup(self.restoreFactory)

        bzrlib.ui.ui_factory = bzrlib.ui.SilentUIFactory()

    def restoreFactory(self):

        bzrlib.ui.ui_factory = self.old_factory

    def test_unlocked(self):

        # break lock when nothing is locked should just return

        try:

            self.branch.break_lock()

        except NotImplementedError:

            pass

    def test_unlocked_repo_locked(self):

        # break lock on the branch should try on the repository even

        # if the branch isn't locked

        token = self.branch.repository.lock_write()

        if token is None:

            self.branch.repository.unlock()

            raise TestNotApplicable('Repository does not use physical locks.')

        self.branch.repository.leave_lock_in_place()

        self.branch.repository.unlock()

        other_instance = self.branch.repository.bzrdir.open_repository()

        if not other_instance.get_physical_lock_status():

            raise TestNotApplicable("Repository does not lock persistently.")

        bzrlib.ui.ui_factory.stdin = StringIO("y\n")

        try:

            self.unused_branch.break_lock()

        except NotImplementedError:

            # branch does not support break_lock

            self.branch.repository.unlock()

            return

        self.assertRaises(errors.LockBroken, self.branch.repository.unlock)

    def test_locked(self):

        # break_lock when locked should unlock the branch and repo

        self.branch.lock_write()

        bzrlib.ui.ui_factory.stdin = StringIO("y\ny\n")

        try:

            self.unused_branch.break_lock()

        except NotImplementedError:

            # branch does not support break_lock

            self.branch.unlock()

            return

        self.assertRaises(errors.LockBroken, self.branch.unlock)

    def test_unlocks_master_branch(self):

        # break_lock when when the master branch is locked should offer to

        # unlock it.

        master = self.make_branch('master')

        try:

            self.branch.bind(master)

        except errors.UpgradeRequired:

            # this branch does not support binding.

            return

        master.lock_write()

        bzrlib.ui.ui_factory.stdin = StringIO("y\ny\n")

        try:

            self.unused_branch.break_lock()

        except NotImplementedError:

            # branch does not support break_lock

            master.unlock()

            return

        self.assertRaises(errors.LockBroken, master.unlock)

        # can we lock it now ?

        master.lock_write()

        master.unlock()