# 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
"""Basic tests for AtomicFile"""
import os
import stat
import sys
from bzrlib import (
atomicfile,
errors,
osutils,
symbol_versioning,
)
from bzrlib.tests import TestCaseInTempDir,TestSkipped
class TestAtomicFile(TestCaseInTempDir):
def test_commit(self):
f = atomicfile.AtomicFile('test')
self.failIfExists('test')
f.write('foo\n')
f.commit()
self.assertEqual(['test'], os.listdir('.'))
self.check_file_contents('test', 'foo\n')
self.assertRaises(errors.AtomicFileAlreadyClosed, f.commit)
self.assertRaises(errors.AtomicFileAlreadyClosed, f.abort)
# close is re-entrant safe
f.close()
def test_abort(self):
f = atomicfile.AtomicFile('test')
f.write('foo\n')
f.abort()
self.assertEqual([], os.listdir('.'))
self.assertRaises(errors.AtomicFileAlreadyClosed, f.abort)
self.assertRaises(errors.AtomicFileAlreadyClosed, f.commit)
# close is re-entrant safe
f.close()
def test_close(self):
f = atomicfile.AtomicFile('test')
f.write('foo\n')
# close on an open file is an abort
f.close()
self.assertEqual([], os.listdir('.'))
self.assertRaises(errors.AtomicFileAlreadyClosed, f.abort)
self.assertRaises(errors.AtomicFileAlreadyClosed, f.commit)
# close is re-entrant safe
f.close()
def test_text_mode(self):
f = atomicfile.AtomicFile('test', mode='wt')
f.write('foo\n')
f.commit()
contents = open('test', 'rb').read()
if sys.platform == 'win32':
self.assertEqual('foo\r\n', contents)
else:
self.assertEqual('foo\n', contents)
def can_sys_preserve_mode(self):
# PLATFORM DEFICIENCY/ TestSkipped
return sys.platform not in ('win32',)
def _test_mode(self, mode):
if not self.can_sys_preserve_mode():
raise TestSkipped("This test cannot be run on your platform")
f = atomicfile.AtomicFile('test', mode='wb', new_mode=mode)
f.write('foo\n')
f.commit()
st = os.lstat('test')
self.assertEqualMode(mode, stat.S_IMODE(st.st_mode))
def test_mode_0666(self):
self._test_mode(0666)
def test_mode_0664(self):
self._test_mode(0664)
def test_mode_0660(self):
self._test_mode(0660)
def test_mode_0660(self):
self._test_mode(0660)
def test_mode_0640(self):
self._test_mode(0640)
def test_mode_0600(self):
self._test_mode(0600)
def test_mode_0400(self):
self._test_mode(0400)
# Make it read-write again so cleanup doesn't complain
os.chmod('test', 0600)
def test_no_mode(self):
# The default file permissions should be based on umask
umask = osutils.get_umask()
f = atomicfile.AtomicFile('test', mode='wb')
f.write('foo\n')
f.commit()
st = os.lstat('test')
self.assertEqualMode(0666 & ~umask, stat.S_IMODE(st.st_mode))
def test_closed(self):
local_warnings = []
def capture_warnings(msg, cls, stacklevel=None):
self.assertEqual(cls, DeprecationWarning)
local_warnings.append(msg)
method = symbol_versioning.warn
try:
symbol_versioning.set_warning_method(capture_warnings)
f = atomicfile.AtomicFile('test', mode='wb')
self.assertEqual(False, f.closed)
f.abort()
self.assertEqual(True, f.closed)
f = atomicfile.AtomicFile('test', mode='wb')
f.close()
self.assertEqual(True, f.closed)
f = atomicfile.AtomicFile('test', mode='wb')
f.commit()
self.assertEqual(True, f.closed)
finally:
symbol_versioning.set_warning_method(method)
txt = 'AtomicFile.closed deprecated in bzr 0.10'
self.assertEqual([txt]*4, local_warnings)
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