1 # Test some Unicode file name semantics 2 # We dont test many operations on files other than 3 # that their names can be used with Unicode characters. 4 import os, glob, time, shutil 5 import unicodedata 6 7 import unittest 8 from test.test_support import run_unittest, change_cwd, TESTFN_UNICODE 9 from test.test_support import TESTFN_ENCODING, TESTFN_UNENCODABLE 10 try: 11 TESTFN_ENCODED = TESTFN_UNICODE.encode(TESTFN_ENCODING) 12 except (UnicodeError, TypeError): 13 # Either the file system encoding is None, or the file name 14 # cannot be encoded in the file system encoding. 15 raise unittest.SkipTest("No Unicode filesystem semantics on this platform.") 16 17 if TESTFN_ENCODED.decode(TESTFN_ENCODING) != TESTFN_UNICODE: 18 # The file system encoding does not support Latin-1 19 # (which test_support assumes), so try the file system 20 # encoding instead. 21 import sys 22 try: 23 TESTFN_UNICODE = unicode("@test-\xe0\xf2", sys.getfilesystemencoding()) 24 TESTFN_ENCODED = TESTFN_UNICODE.encode(TESTFN_ENCODING) 25 if '?' in TESTFN_ENCODED: 26 # MBCS will not report the error properly 27 raise UnicodeError, "mbcs encoding problem" 28 except (UnicodeError, TypeError): 29 raise unittest.SkipTest("Cannot find a suiteable filename.") 30 31 if TESTFN_ENCODED.decode(TESTFN_ENCODING) != TESTFN_UNICODE: 32 raise unittest.SkipTest("Cannot find a suitable filename.") 33 34 def remove_if_exists(filename): 35 if os.path.exists(filename): 36 os.unlink(filename) 37 38 class TestUnicodeFiles(unittest.TestCase): 39 # The 'do_' functions are the actual tests. They generally assume the 40 # file already exists etc. 41 42 # Do all the tests we can given only a single filename. The file should 43 # exist. 44 def _do_single(self, filename): 45 self.assertTrue(os.path.exists(filename)) 46 self.assertTrue(os.path.isfile(filename)) 47 self.assertTrue(os.access(filename, os.R_OK)) 48 self.assertTrue(os.path.exists(os.path.abspath(filename))) 49 self.assertTrue(os.path.isfile(os.path.abspath(filename))) 50 self.assertTrue(os.access(os.path.abspath(filename), os.R_OK)) 51 os.chmod(filename, 0777) 52 os.utime(filename, None) 53 os.utime(filename, (time.time(), time.time())) 54 # Copy/rename etc tests using the same filename 55 self._do_copyish(filename, filename) 56 # Filename should appear in glob output 57 self.assertTrue( 58 os.path.abspath(filename)==os.path.abspath(glob.glob(filename)[0])) 59 # basename should appear in listdir. 60 path, base = os.path.split(os.path.abspath(filename)) 61 if isinstance(base, str): 62 base = base.decode(TESTFN_ENCODING) 63 file_list = os.listdir(path) 64 # listdir() with a unicode arg may or may not return Unicode 65 # objects, depending on the platform. 66 if file_list and isinstance(file_list[0], str): 67 file_list = [f.decode(TESTFN_ENCODING) for f in file_list] 68 69 # Normalize the unicode strings, as round-tripping the name via the OS 70 # may return a different (but equivalent) value. 71 base = unicodedata.normalize("NFD", base) 72 file_list = [unicodedata.normalize("NFD", f) for f in file_list] 73 74 self.assertIn(base, file_list) 75 76 # Do as many "equivalancy' tests as we can - ie, check that although we 77 # have different types for the filename, they refer to the same file. 78 def _do_equivalent(self, filename1, filename2): 79 # Note we only check "filename1 against filename2" - we don't bother 80 # checking "filename2 against 1", as we assume we are called again with 81 # the args reversed. 82 self.assertTrue(type(filename1)!=type(filename2), 83 "No point checking equivalent filenames of the same type") 84 # stat and lstat should return the same results. 85 self.assertEqual(os.stat(filename1), 86 os.stat(filename2)) 87 self.assertEqual(os.lstat(filename1), 88 os.lstat(filename2)) 89 # Copy/rename etc tests using equivalent filename 90 self._do_copyish(filename1, filename2) 91 92 # Tests that copy, move, etc one file to another. 93 def _do_copyish(self, filename1, filename2): 94 # Should be able to rename the file using either name. 95 self.assertTrue(os.path.isfile(filename1)) # must exist. 96 os.rename(filename1, filename2 + ".new") 97 self.assertTrue(os.path.isfile(filename1+".new")) 98 os.rename(filename1 + ".new", filename2) 99 self.assertTrue(os.path.isfile(filename2)) 100 101 shutil.copy(filename1, filename2 + ".new") 102 os.unlink(filename1 + ".new") # remove using equiv name. 103 # And a couple of moves, one using each name. 104 shutil.move(filename1, filename2 + ".new") 105 self.assertTrue(not os.path.exists(filename2)) 106 shutil.move(filename1 + ".new", filename2) 107 self.assertTrue(os.path.exists(filename1)) 108 # Note - due to the implementation of shutil.move, 109 # it tries a rename first. This only fails on Windows when on 110 # different file systems - and this test can't ensure that. 111 # So we test the shutil.copy2 function, which is the thing most 112 # likely to fail. 113 shutil.copy2(filename1, filename2 + ".new") 114 os.unlink(filename1 + ".new") 115 116 def _do_directory(self, make_name, chdir_name, encoded): 117 if os.path.isdir(make_name): 118 os.rmdir(make_name) 119 os.mkdir(make_name) 120 try: 121 with change_cwd(chdir_name): 122 if not encoded: 123 cwd_result = os.getcwdu() 124 name_result = make_name 125 else: 126 cwd_result = os.getcwd().decode(TESTFN_ENCODING) 127 name_result = make_name.decode(TESTFN_ENCODING) 128 129 cwd_result = unicodedata.normalize("NFD", cwd_result) 130 name_result = unicodedata.normalize("NFD", name_result) 131 132 self.assertEqual(os.path.basename(cwd_result),name_result) 133 finally: 134 os.rmdir(make_name) 135 136 # The '_test' functions 'entry points with params' - ie, what the 137 # top-level 'test' functions would be if they could take params 138 def _test_single(self, filename): 139 remove_if_exists(filename) 140 f = file(filename, "w") 141 f.close() 142 try: 143 self._do_single(filename) 144 finally: 145 os.unlink(filename) 146 self.assertTrue(not os.path.exists(filename)) 147 # and again with os.open. 148 f = os.open(filename, os.O_CREAT) 149 os.close(f) 150 try: 151 self._do_single(filename) 152 finally: 153 os.unlink(filename) 154 155 def _test_equivalent(self, filename1, filename2): 156 remove_if_exists(filename1) 157 self.assertTrue(not os.path.exists(filename2)) 158 f = file(filename1, "w") 159 f.close() 160 try: 161 self._do_equivalent(filename1, filename2) 162 finally: 163 os.unlink(filename1) 164 165 # The 'test' functions are unittest entry points, and simply call our 166 # _test functions with each of the filename combinations we wish to test 167 def test_single_files(self): 168 self._test_single(TESTFN_ENCODED) 169 self._test_single(TESTFN_UNICODE) 170 if TESTFN_UNENCODABLE is not None: 171 self._test_single(TESTFN_UNENCODABLE) 172 173 def test_equivalent_files(self): 174 self._test_equivalent(TESTFN_ENCODED, TESTFN_UNICODE) 175 self._test_equivalent(TESTFN_UNICODE, TESTFN_ENCODED) 176 177 def test_directories(self): 178 # For all 'equivalent' combinations: 179 # Make dir with encoded, chdir with unicode, checkdir with encoded 180 # (or unicode/encoded/unicode, etc 181 ext = ".dir" 182 self._do_directory(TESTFN_ENCODED+ext, TESTFN_ENCODED+ext, True) 183 self._do_directory(TESTFN_ENCODED+ext, TESTFN_UNICODE+ext, True) 184 self._do_directory(TESTFN_UNICODE+ext, TESTFN_ENCODED+ext, False) 185 self._do_directory(TESTFN_UNICODE+ext, TESTFN_UNICODE+ext, False) 186 # Our directory name that can't use a non-unicode name. 187 if TESTFN_UNENCODABLE is not None: 188 self._do_directory(TESTFN_UNENCODABLE+ext, 189 TESTFN_UNENCODABLE+ext, 190 False) 191 192 def test_main(): 193 run_unittest(__name__) 194 195 if __name__ == "__main__": 196 test_main() 197
