~bzr-pqm/bzr/bzr.dev

# Copyright (C) 2008 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 upgrades of various stacking situations."""

from bzrlib import (

    bzrdir,

    errors,

    tests,

    )

from bzrlib.upgrade import upgrade

class TestStackUpgrade(tests.TestCaseWithTransport):

    # TODO: This should possibly be repeated for all stacking repositories,

    # pairwise by rich/non-rich format; should possibly also try other kinds

    # of upgrades like knit->pack. -- mbp 20080804

    def test_stack_upgrade(self):

        """Correct checks when stacked-on repository is upgraded.

        We initially stack on a repo with the same rich root support,

        we then upgrade it and should fail, we then upgrade the overlaid

        repository.

        """

        base = self.make_branch_and_tree('base',

            format=self.scenario_old_format)

        self.build_tree(['base/foo'])

        base.commit('base commit')

        # make another one stacked

        stacked = base.bzrdir.sprout('stacked', stacked=True)

        # this must really be stacked (or get_stacked_on_url raises an error)

        self.assertTrue(stacked.open_branch().get_stacked_on_url())

        # now we'll upgrade the underlying branch, then upgrade the stacked

        # branch, and this should still work.

        new_format = bzrdir.format_registry.make_bzrdir(

            self.scenario_new_format)

        upgrade('base', new_format)

        # in some cases you'll get an error if the underlying model has

        # changed; if just the data format has changed this should still work

        if self.scenario_model_change:

            self.assertRaises(errors.IncompatibleRepositories,

                stacked.open_branch)

        else:

            stacked.open_branch().check()

        stacked = bzrdir.BzrDir.open('stacked')

        # but we can upgrade the stacked repository

        upgrade('stacked', new_format)

        # and now it's ok

        stacked = bzrdir.BzrDir.open('stacked')

        stacked.open_branch().check()

def load_tests(basic_tests, module, loader):

    """Generate dynamic scenario tests.

    Called by the bzrlib test framework.

    """

    scenario_pairs = [ # old format, new format, model_change

#        ('knit', 'rich-root', True),

        ('knit', '1.6', False),

#        ('pack-0.92', '1.6', False),

        ('1.6', '1.6.1-rich-root', True),

        ]

    scenarios = []

    for (old_name, new_name, model_change) in scenario_pairs:

        name = old_name + ', ' + new_name

        scenarios.append((name,

            dict(scenario_old_format=old_name,

                scenario_new_format=new_name,

                scenario_model_change=model_change)))

    suite = loader.suiteClass()

    return tests.multiply_tests(basic_tests, scenarios, suite)