~bzr-pqm/bzr/bzr.dev

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# Copyright (C) 2005 by 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 the osutils wrapper.
"""

import os
import sys

import bzrlib
from bzrlib.tests import TestCaseInTempDir
import bzrlib.osutils as osutils

class TestOSUtils(TestCaseInTempDir):

    def test_fancy_rename(self):
        # This should work everywhere
        def rename(a, b):
            osutils.fancy_rename(a, b,
                    rename_func=os.rename,
                    unlink_func=os.unlink)

        open('a', 'wb').write('something in a\n')
        rename('a', 'b')
        self.failIfExists('a')
        self.failUnlessExists('b')
        self.check_file_contents('b', 'something in a\n')

        open('a', 'wb').write('new something in a\n')
        rename('b', 'a')

        self.check_file_contents('a', 'something in a\n')

    def test_rename(self):
        # Rename should be semi-atomic on all platforms
        open('a', 'wb').write('something in a\n')
        osutils.rename('a', 'b')
        self.failIfExists('a')
        self.failUnlessExists('b')
        self.check_file_contents('b', 'something in a\n')

        open('a', 'wb').write('new something in a\n')
        osutils.rename('b', 'a')

        self.check_file_contents('a', 'something in a\n')


    # TODO: test fancy_rename using a MemoryTransport