~bzr-pqm/bzr/bzr.dev

# Copyright (C) 2006 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 WorkingTree.set_root_id"""

from bzrlib import inventory

from bzrlib.symbol_versioning import zero_twelve

from bzrlib.tests.workingtree_implementations import TestCaseWithWorkingTree

class TestSetRootId(TestCaseWithWorkingTree):

    def test_set_None(self):

        # setting the root_id to None is equivalent to setting it

        # to inventory.ROOT_ID

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

        self.callDeprecated([

            'WorkingTree.set_root_id with fileid=None was deprecated in version'

            ' 0.12.'],

            tree.set_root_id, None)

        self.assertEqual(inventory.ROOT_ID, tree.get_root_id())

    def test_set_and_read_unicode(self):

        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())