~bzr-pqm/bzr/bzr.dev

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# 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  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, test_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)))
    adapter = tests.TestScenarioApplier()
    adapter.scenarios = scenarios
    suite = tests.TestSuite()
    tests.adapt_tests(basic_tests, adapter, suite)
    return suite