~bzr-pqm/bzr/bzr.dev

# Copyright (C) 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 _make_parents_provider on stacked repositories."""

from bzrlib.tests.per_repository import TestCaseWithRepository

class Test_MakeParentsProvider(TestCaseWithRepository):

    def test_add_fallback_after_make_pp(self):

        """Fallbacks added after _make_parents_provider are used by that

        provider.

        """

        referring_repo = self.make_repository('repo')

        pp = referring_repo._make_parents_provider()

        # Initially referring_repo has no revisions and no fallbacks

        self.addCleanup(referring_repo.lock_read().unlock)

        self.assertEqual({}, pp.get_parent_map(['revid2']))

        # Add a fallback repo with a commit

        wt_a = self.make_branch_and_tree('fallback')

        wt_a.commit('first commit', rev_id='revid1')

        wt_a.commit('second commit', rev_id='revid2')

        fallback_repo = wt_a.branch.repository

        referring_repo.add_fallback_repository(fallback_repo)

        # Now revid1 appears in pp's results.

        self.assertEqual(('revid1',), pp.get_parent_map(['revid2'])['revid2'])