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Viewing changes to bzrlib/tests/blackbox/test_repair_workingtree.py

  • Committer: Andrew Bennetts
  • Date: 2011-02-07 04:14:29 UTC
  • mfrom: (5535.4.26 fetch-all-tags-309682)
  • mto: This revision was merged to the branch mainline in revision 5648.
  • Revision ID: andrew.bennetts@canonical.com-20110207041429-3kc1blj34rvvxod9
Merge fetch-all-tags-309682.

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bzrlib/tests/blackbox/test_repair_workingtree.py
 
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# Copyright (C) 2011 Canonical Ltd
 
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#
 
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# This program is free software; you can redistribute it and/or modify
 
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# it under the terms of the GNU General Public License as published by
 
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# the Free Software Foundation; either version 2 of the License, or
 
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# (at your option) any later version.
 
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#
 
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# This program is distributed in the hope that it will be useful,
 
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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# GNU General Public License for more details.
 
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#
 
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# You should have received a copy of the GNU General Public License
 
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# along with this program; if not, write to the Free Software
 
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 
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from bzrlib import (
 
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    workingtree,
 
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    )
 
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from bzrlib.tests import TestCaseWithTransport
 
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class TestRepairWorkingTree(TestCaseWithTransport):
 
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    def break_dirstate(self, tree, completely=False):
 
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        """Write garbage into the dirstate file."""
 
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        # This test assumes that the format uses a DirState file, which we then
 
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        # manually corrupt. If we change the way to get at that dirstate file,
 
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        # then we can update how this is done
 
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        self.assertIsNot(None, getattr(tree, 'current_dirstate', None))
 
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        tree.lock_read()
 
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        try:
 
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            dirstate = tree.current_dirstate()
 
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            dirstate_path = dirstate._filename
 
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            self.failUnlessExists(dirstate_path)
 
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        finally:
 
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            tree.unlock()
 
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        # We have to have the tree unlocked at this point, so we can safely
 
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        # mutate the state file on all platforms.
 
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        if completely:
 
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            f = open(dirstate_path, 'wb')
 
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        else:
 
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            f = open(dirstate_path, 'ab')
 
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        try:
 
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            f.write('garbage-at-end-of-file\n')
 
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        finally:
 
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            f.close()
 
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    def make_initial_tree(self):
 
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        tree = self.make_branch_and_tree('tree')
 
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        self.build_tree(['tree/foo', 'tree/dir/', 'tree/dir/bar'])
 
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        tree.add(['foo', 'dir', 'dir/bar'])
 
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        tree.commit('first')
 
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        return tree
 
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    def test_repair_refuses_uncorrupted(self):
 
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        tree = self.make_initial_tree()
 
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        # If the tree doesn't appear to be corrupt, we refuse, but prompt the
 
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        # user to let them know that:
 
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        # a) they may want to use 'bzr revert' instead of repair-workingtree
 
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        # b) they can use --force if they really want to do this
 
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        self.run_bzr_error(['The tree does not appear to be corrupt',
 
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                            '"bzr revert"',
 
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                            '--force'],
 
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                           'repair-workingtree -d tree')
 
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    def test_repair_forced(self):
 
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        tree = self.make_initial_tree()
 
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        tree.rename_one('dir', 'alt_dir')
 
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        self.assertIsNot(None, tree.path2id('alt_dir'))
 
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        self.run_bzr('repair-workingtree -d tree --force')
 
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        # This requires the tree has reloaded the working state
 
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        self.assertIs(None, tree.path2id('alt_dir'))
 
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        self.failUnlessExists('tree/alt_dir')
 
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    def test_repair_corrupted_dirstate(self):
 
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        tree = self.make_initial_tree()
 
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        self.break_dirstate(tree)
 
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        self.run_bzr('repair-workingtree -d tree')
 
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        tree = workingtree.WorkingTree.open('tree')
 
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        # At this point, check should be happy
 
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        tree.check_state()
 
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    def test_repair_naive_destroyed_fails(self):
 
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        tree = self.make_initial_tree()
 
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        self.break_dirstate(tree, completely=True)
 
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        self.run_bzr_error(['the header appears corrupt, try passing'],
 
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                           'repair-workingtree -d tree')
 
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    def test_repair_destroyed_with_revs_passes(self):
 
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        tree = self.make_initial_tree()
 
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        self.break_dirstate(tree, completely=True)
 
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        self.run_bzr('repair-workingtree -d tree -r -1')
 
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        tree = workingtree.WorkingTree.open('tree')
 
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        # At this point, check should be happy
 
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        tree.check_state()