~bzr-pqm/bzr/bzr.dev

# Copyright (C) 2009, 2010 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.refresh_data."""

from bzrlib import (

    errors,

    repository,

    )

from bzrlib.tests import TestSkipped

from bzrlib.tests.per_repository import TestCaseWithRepository

class TestRefreshData(TestCaseWithRepository):

    def test_refresh_data_unlocked(self):

        # While not interesting, it should not error.

        repo = self.make_repository('.')

        repo.refresh_data()

    def test_refresh_data_read_locked(self):

        # While not interesting, it should not error.

        repo = self.make_repository('.')

        repo.lock_read()

        self.addCleanup(repo.unlock)

        repo.refresh_data()

    def test_refresh_data_write_locked(self):

        # While not interesting, it should not error.

        repo = self.make_repository('.')

        repo.lock_write()

        self.addCleanup(repo.unlock)

        repo.refresh_data()

    def test_refresh_data_in_write_group(self):

        # refresh_data may either succeed or raise IsInWriteGroupError during a

        # write group.

        repo = self.make_repository('.')

        repo.lock_write()

        self.addCleanup(repo.unlock)

        repo.start_write_group()

        self.addCleanup(repo.abort_write_group)

        try:

            repo.refresh_data()

        except repository.IsInWriteGroupError:

            # This is ok.

            pass

        else:

            # This is ok too.

            pass

    def fetch_new_revision_into_concurrent_instance(self, repo, token):

        """Create a new revision (revid 'new-rev') and fetch it into a

        concurrent instance of repo.

        """

        source = self.make_branch_and_memory_tree('source')

        source.lock_write()

        self.addCleanup(source.unlock)

        source.add([''], ['root-id'])

        revid = source.commit('foo', rev_id='new-rev')

        # Force data reading on weaves/knits

        repo.all_revision_ids()

        repo.revisions.keys()

        repo.inventories.keys()

        # server repo is the instance a smart server might hold for this

        # repository.

        server_repo = repo.bzrdir.open_repository()

        try:

            server_repo.lock_write(token)

        except errors.TokenLockingNotSupported:

            raise TestSkipped('Cannot concurrently insert into repo format %r'

                % self.repository_format)

        try:

            server_repo.fetch(source.branch.repository, revid)

        finally:

            server_repo.unlock()

    def test_refresh_data_after_fetch_new_data_visible(self):

        repo = self.make_repository('target')

        token = repo.lock_write().repository_token

        self.addCleanup(repo.unlock)

        self.fetch_new_revision_into_concurrent_instance(repo, token)

        repo.refresh_data()

        self.assertNotEqual({}, repo.get_graph().get_parent_map(['new-rev']))

    def test_refresh_data_after_fetch_new_data_visible_in_write_group(self):

        tree = self.make_branch_and_memory_tree('target')

        tree.lock_write()

        self.addCleanup(tree.unlock)

        tree.add([''], ['root-id'])

        tree.commit('foo', rev_id='commit-in-target')

        repo = tree.branch.repository

        token = repo.lock_write().repository_token

        self.addCleanup(repo.unlock)

        repo.start_write_group()

        self.addCleanup(repo.abort_write_group)

        self.fetch_new_revision_into_concurrent_instance(repo, token)

        # Call refresh_data.  It either fails with IsInWriteGroupError, or it

        # succeeds and the new revisions are visible.

        try:

            repo.refresh_data()

        except repository.IsInWriteGroupError:

            pass

        else:

            self.assertEqual(

                ['commit-in-target', 'new-rev'],

                sorted(repo.all_revision_ids()))