/brz/remove-bazaar

# Copyright (C) 2007 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 repository write groups."""

from bzrlib import errors

from bzrlib.tests.repository_implementations.test_repository import TestCaseWithRepository

class TestWriteGroup(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_gets_None(self):

        repo = self.make_repository('.')

        repo.lock_write()

        repo.start_write_group()

        self.assertEqual(None, repo.commit_write_group())

        repo.unlock()

    def test_unlock_after_start_errors(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.assertRaises(errors.BzrError, repo.unlock)

        self.assertTrue(repo.is_locked())

        repo.commit_write_group()

        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()