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# 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
"""Test operations that check the repository for corruption"""
from bzrlib import (
errors,
inventory,
revision as _mod_revision,
)
from bzrlib.repofmt.knitrepo import RepositoryFormatKnit
from bzrlib.tests.repository_implementations import TestCaseWithRepository
from bzrlib.tests import TestNotApplicable
class TestFindInconsistentRevisionParents(TestCaseWithRepository):
def setUp(self):
if not isinstance(self.repository_format, RepositoryFormatKnit):
# XXX: This could happen to weaves too, but they're pretty
# deprecated.
raise TestNotApplicable(
"%s isn't a knit format" % self.repository_format)
TestCaseWithRepository.setUp(self)
def make_repo_with_extra_ghost_index(self):
"""Make a corrupt repository.
It will contain one revision, 'revision-id'. The knit index will claim
that it has one parent, 'incorrect-parent', but the revision text will
claim it has no parents.`
Note: only the *cache* of the knit index is corrupted. Thus the
corruption will only last while the repository is locked. For this
reason, the returned repo is (read) locked.
"""
repo = self.make_repository('broken')
inv = inventory.Inventory(revision_id='revision-id')
inv.root.revision = 'revision-id'
repo.add_inventory('revision-id', inv, [])
revision = _mod_revision.Revision('revision-id',
committer='jrandom@example.com', timestamp=0,
inventory_sha1='', timezone=0, message='message', parent_ids=[])
repo.add_revision('revision-id',revision, inv)
# Change the knit index's record of the parents for 'revision-id' to
# claim it has a parent, 'incorrect-parent', that doesn't exist in this
# knit at all.
repo.lock_read()
rev_knit = repo._get_revision_vf()
index_cache = rev_knit._index._cache
cached_index_entry = list(index_cache['revision-id'])
cached_index_entry[4] = ['incorrect-parent']
index_cache['revision-id'] = tuple(cached_index_entry)
return repo
def test__find_inconsistent_revision_parents(self):
"""_find_inconsistent_revision_parents finds revisions with broken
parents.
"""
repo = self.make_repo_with_extra_ghost_index()
self.assertEqual(
[('revision-id', ['incorrect-parent'], [])],
list(repo._find_inconsistent_revision_parents()))
repo.unlock()
def test__check_for_inconsistent_revision_parents(self):
"""_check_for_inconsistent_revision_parents raises BzrCheckError if
there are any revisions with inconsistent parents.
"""
repo = self.make_repo_with_extra_ghost_index()
self.assertRaises(
errors.BzrCheckError,
repo._check_for_inconsistent_revision_parents)
repo.unlock()
def test__check_for_inconsistent_revision_parents_on_clean_repo(self):
"""_check_for_inconsistent_revision_parents does nothing if there are
no broken revisions.
"""
repo = self.make_repository('empty-repo')
repo._check_for_inconsistent_revision_parents() # nothing happens
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