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# 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 WorkingTree.check_state."""
from bzrlib import (
errors,
tests,
)
from bzrlib.tests.per_workingtree import TestCaseWithWorkingTree
class TestCaseWithState(TestCaseWithWorkingTree):
def make_tree_with_broken_dirstate(self, path):
tree = self.make_branch_and_tree(path)
self.break_dirstate(tree)
return tree
def break_dirstate(self, tree, completely=False):
"""Write garbage into the dirstate file."""
if getattr(tree, 'current_dirstate', None) is None:
raise tests.TestNotApplicable(
'Only applies to dirstate-based trees')
tree.lock_read()
try:
dirstate = tree.current_dirstate()
dirstate_path = dirstate._filename
self.assertPathExists(dirstate_path)
finally:
tree.unlock()
# We have to have the tree unlocked at this point, so we can safely
# mutate the state file on all platforms.
if completely:
f = open(dirstate_path, 'wb')
else:
f = open(dirstate_path, 'ab')
try:
f.write('garbage-at-end-of-file\n')
finally:
f.close()
class TestCheckState(TestCaseWithState):
def test_check_state(self):
tree = self.make_branch_and_tree('tree')
# Everything should be fine with an unmodified tree, no exception
# should be raised.
tree.check_state()
def test_check_broken_dirstate(self):
tree = self.make_tree_with_broken_dirstate('tree')
self.assertRaises(errors.BzrError, tree.check_state)
class TestResetState(TestCaseWithState):
def make_initial_tree(self):
tree = self.make_branch_and_tree('tree')
self.build_tree(['tree/foo', 'tree/dir/', 'tree/dir/bar'])
tree.add(['foo', 'dir', 'dir/bar'])
tree.commit('initial')
return tree
def test_reset_state_forgets_changes(self):
tree = self.make_initial_tree()
foo_id = tree.path2id('foo')
tree.rename_one('foo', 'baz')
self.assertEqual(None, tree.path2id('foo'))
self.assertEqual(foo_id, tree.path2id('baz'))
tree.reset_state()
# After reset, we should have forgotten about the rename, but we won't
# have
self.assertEqual(foo_id, tree.path2id('foo'))
self.assertEqual(None, tree.path2id('baz'))
self.assertPathDoesNotExist('tree/foo')
self.assertPathExists('tree/baz')
def test_reset_state_handles_corrupted_dirstate(self):
tree = self.make_initial_tree()
rev_id = tree.last_revision()
self.break_dirstate(tree)
tree.reset_state()
tree.check_state()
self.assertEqual(rev_id, tree.last_revision())
def test_reset_state_handles_destroyed_dirstate(self):
# If you pass the revision_id, we can handle a completely destroyed
# dirstate file.
tree = self.make_initial_tree()
rev_id = tree.last_revision()
self.break_dirstate(tree, completely=True)
tree.reset_state(revision_ids=[rev_id])
tree.check_state()
self.assertEqual(rev_id, tree.last_revision())
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