~bzr-pqm/bzr/bzr.dev

# Copyright (C) 2006-2010 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.set_root_id"""

import sys

from bzrlib import errors

from bzrlib.tests import TestSkipped

from bzrlib.tests.per_workingtree import TestCaseWithWorkingTree

class TestSetRootId(TestCaseWithWorkingTree):

    def test_set_and_read_unicode(self):

        if sys.platform == "win32":

            raise TestSkipped("don't use oslocks on win32 in unix manner")

        # This test tests that setting the root doesn't flush, so it

        # deliberately tests concurrent access that isn't possible on windows.

        self.thisFailsStrictLockCheck()

        tree = self.make_branch_and_tree('a-tree')

        # setting the root id allows it to be read via get_root_id.

        root_id = u'\xe5n-id'.encode('utf8')

        tree.lock_write()

        try:

            old_id = tree.get_root_id()

            tree.set_root_id(root_id)

            self.assertEqual(root_id, tree.get_root_id())

            # set root id should not have triggered a flush of the tree,

            # so check a new tree sees the old state.

            reference_tree = tree.bzrdir.open_workingtree()

            self.assertEqual(old_id, reference_tree.get_root_id())

        finally:

            tree.unlock()

        # having unlocked the tree, the value should have been

        # preserved into the next lock, which is an implicit read

        # lock around the get_root_id call.

        self.assertEqual(root_id, tree.get_root_id())

        # and if we get a new working tree instance, then the value

        # should still be retained

        tree = tree.bzrdir.open_workingtree()

        self.assertEqual(root_id, tree.get_root_id())

        tree._validate()

    def test_set_root_id(self):

        tree = self.make_branch_and_tree('.')

        tree.lock_write()

        self.addCleanup(tree.unlock)

        orig_root_id = tree.get_root_id()

        self.assertNotEqual('custom-root-id', orig_root_id)

        self.assertEqual('', tree.id2path(orig_root_id))

        self.assertRaises(errors.NoSuchId, tree.id2path, 'custom-root-id')

        tree.set_root_id('custom-root-id')

        self.assertEqual('custom-root-id', tree.get_root_id())

        self.assertEqual('custom-root-id', tree.path2id(''))

        self.assertEqual('', tree.id2path('custom-root-id'))

        self.assertRaises(errors.NoSuchId, tree.id2path, orig_root_id)

        tree._validate()