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# Test some Unicode file name semantics
# We don't test many operations on files other than
# that their names can be used with Unicode characters.
import os, glob, time, shutil
import unicodedata
import unittest
from test.support import (run_unittest, rmtree, change_cwd,
TESTFN_ENCODING, TESTFN_UNICODE, TESTFN_UNENCODABLE, create_empty_file)
if not os.path.supports_unicode_filenames:
try:
TESTFN_UNICODE.encode(TESTFN_ENCODING)
except (UnicodeError, TypeError):
# Either the file system encoding is None, or the file name
# cannot be encoded in the file system encoding.
raise unittest.SkipTest("No Unicode filesystem semantics on this platform.")
def remove_if_exists(filename):
if os.path.exists(filename):
os.unlink(filename)
class TestUnicodeFiles(unittest.TestCase):
# The 'do_' functions are the actual tests. They generally assume the
# file already exists etc.
# Do all the tests we can given only a single filename. The file should
# exist.
def _do_single(self, filename):
self.assertTrue(os.path.exists(filename))
self.assertTrue(os.path.isfile(filename))
self.assertTrue(os.access(filename, os.R_OK))
self.assertTrue(os.path.exists(os.path.abspath(filename)))
self.assertTrue(os.path.isfile(os.path.abspath(filename)))
self.assertTrue(os.access(os.path.abspath(filename), os.R_OK))
os.chmod(filename, 0o777)
os.utime(filename, None)
os.utime(filename, (time.time(), time.time()))
# Copy/rename etc tests using the same filename
self._do_copyish(filename, filename)
# Filename should appear in glob output
self.assertTrue(
os.path.abspath(filename)==os.path.abspath(glob.glob(filename)[0]))
# basename should appear in listdir.
path, base = os.path.split(os.path.abspath(filename))
file_list = os.listdir(path)
# Normalize the unicode strings, as round-tripping the name via the OS
# may return a different (but equivalent) value.
base = unicodedata.normalize("NFD", base)
file_list = [unicodedata.normalize("NFD", f) for f in file_list]
self.assertIn(base, file_list)
# Tests that copy, move, etc one file to another.
def _do_copyish(self, filename1, filename2):
# Should be able to rename the file using either name.
self.assertTrue(os.path.isfile(filename1)) # must exist.
os.rename(filename1, filename2 + ".new")
self.assertFalse(os.path.isfile(filename2))
self.assertTrue(os.path.isfile(filename1 + '.new'))
os.rename(filename1 + ".new", filename2)
self.assertFalse(os.path.isfile(filename1 + '.new'))
self.assertTrue(os.path.isfile(filename2))
shutil.copy(filename1, filename2 + ".new")
os.unlink(filename1 + ".new") # remove using equiv name.
# And a couple of moves, one using each name.
shutil.move(filename1, filename2 + ".new")
self.assertFalse(os.path.exists(filename2))
self.assertTrue(os.path.exists(filename1 + '.new'))
shutil.move(filename1 + ".new", filename2)
self.assertFalse(os.path.exists(filename2 + '.new'))
self.assertTrue(os.path.exists(filename1))
# Note - due to the implementation of shutil.move,
# it tries a rename first. This only fails on Windows when on
# different file systems - and this test can't ensure that.
# So we test the shutil.copy2 function, which is the thing most
# likely to fail.
shutil.copy2(filename1, filename2 + ".new")
self.assertTrue(os.path.isfile(filename1 + '.new'))
os.unlink(filename1 + ".new")
self.assertFalse(os.path.exists(filename2 + '.new'))
def _do_directory(self, make_name, chdir_name):
if os.path.isdir(make_name):
rmtree(make_name)
os.mkdir(make_name)
try:
with change_cwd(chdir_name):
cwd_result = os.getcwd()
name_result = make_name
cwd_result = unicodedata.normalize("NFD", cwd_result)
name_result = unicodedata.normalize("NFD", name_result)
self.assertEqual(os.path.basename(cwd_result),name_result)
finally:
os.rmdir(make_name)
# The '_test' functions 'entry points with params' - ie, what the
# top-level 'test' functions would be if they could take params
def _test_single(self, filename):
remove_if_exists(filename)
create_empty_file(filename)
try:
self._do_single(filename)
finally:
os.unlink(filename)
self.assertTrue(not os.path.exists(filename))
# and again with os.open.
f = os.open(filename, os.O_CREAT)
os.close(f)
try:
self._do_single(filename)
finally:
os.unlink(filename)
# The 'test' functions are unittest entry points, and simply call our
# _test functions with each of the filename combinations we wish to test
def test_single_files(self):
self._test_single(TESTFN_UNICODE)
if TESTFN_UNENCODABLE is not None:
self._test_single(TESTFN_UNENCODABLE)
def test_directories(self):
# For all 'equivalent' combinations:
# Make dir with encoded, chdir with unicode, checkdir with encoded
# (or unicode/encoded/unicode, etc
ext = ".dir"
self._do_directory(TESTFN_UNICODE+ext, TESTFN_UNICODE+ext)
# Our directory name that can't use a non-unicode name.
if TESTFN_UNENCODABLE is not None:
self._do_directory(TESTFN_UNENCODABLE+ext,
TESTFN_UNENCODABLE+ext)
def test_main():
run_unittest(__name__)
if __name__ == "__main__":
test_main()
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