Lib/test/test_pep277.py

   1 # Test the Unicode versions of normal file functions
   2 # open, os.open, os.stat. os.listdir, os.rename, os.remove, os.mkdir, os.chdir, os.rmdir
   3 import sys, os, unittest
   4 from unicodedata import normalize
   5 from test import test_support
   6
   7 filenames = [
   8     '1_abc',
   9     u'2_ascii',
  10     u'3_Gr\xfc\xdf-Gott',
  11     u'4_\u0393\u03b5\u03b9\u03ac-\u03c3\u03b1\u03c2',
  12     u'5_\u0417\u0434\u0440\u0430\u0432\u0441\u0442\u0432\u0443\u0439\u0442\u0435',
  13     u'6_\u306b\u307d\u3093',
  14     u'7_\u05d4\u05e9\u05e7\u05e6\u05e5\u05e1',
  15     u'8_\u66e8\u66e9\u66eb',
  16     u'9_\u66e8\u05e9\u3093\u0434\u0393\xdf',
  17     # Specific code points: fn, NFC(fn) and NFKC(fn) all differents
  18     u'10_\u1fee\u1ffd',
  19     ]
  20
  21 # Mac OS X decomposes Unicode names, using Normal Form D.
  22 # http://developer.apple.com/mac/library/qa/qa2001/qa1173.html
  23 # "However, most volume formats do not follow the exact specification for
  24 # these normal forms.  For example, HFS Plus uses a variant of Normal Form D
  25 # in which U+2000 through U+2FFF, U+F900 through U+FAFF, and U+2F800 through
  26 # U+2FAFF are not decomposed."
  27 if sys.platform != 'darwin':
  28     filenames.extend([
  29         # Specific code points: NFC(fn), NFD(fn), NFKC(fn) and NFKD(fn) all differents
  30         u'11_\u0385\u03d3\u03d4',
  31         u'12_\u00a8\u0301\u03d2\u0301\u03d2\u0308',    # == NFD(u'\u0385\u03d3\u03d4')
  32         u'13_\u0020\u0308\u0301\u038e\u03ab',          # == NFKC(u'\u0385\u03d3\u03d4')
  33         u'14_\u1e9b\u1fc1\u1fcd\u1fce\u1fcf\u1fdd\u1fde\u1fdf\u1fed',
  34
  35         # Specific code points: fn, NFC(fn) and NFKC(fn) all differents
  36         u'15_\u1fee\u1ffd\ufad1',
  37         u'16_\u2000\u2000\u2000A',
  38         u'17_\u2001\u2001\u2001A',
  39         u'18_\u2003\u2003\u2003A', # == NFC(u'\u2001\u2001\u2001A')
  40         u'19_\u0020\u0020\u0020A', # u'\u0020' == u' ' == NFKC(u'\u2000') ==
  41                                    #   NFKC(u'\u2001') == NFKC(u'\u2003')
  42 ])
  43
  44
  45 # Is it Unicode-friendly?
  46 if not os.path.supports_unicode_filenames:
  47     fsencoding = sys.getfilesystemencoding() or sys.getdefaultencoding()
  48     try:
  49         for name in filenames:
  50             name.encode(fsencoding)
  51     except UnicodeEncodeError:
  52         raise unittest.SkipTest("only NT+ and systems with "
  53                                 "Unicode-friendly filesystem encoding")
  54
  55
  56 # Destroy directory dirname and all files under it, to one level.
  57 def deltree(dirname):
  58     # Don't hide legitimate errors:  if one of these suckers exists, it's
  59     # an error if we can't remove it.
  60     if os.path.exists(dirname):
  61         # must pass unicode to os.listdir() so we get back unicode results.
  62         for fname in os.listdir(unicode(dirname)):
  63             os.unlink(os.path.join(dirname, fname))
  64         os.rmdir(dirname)
  65
  66
  67 class UnicodeFileTests(unittest.TestCase):
  68     files = set(filenames)
  69     normal_form = None
  70
  71     def setUp(self):
  72         try:
  73             os.mkdir(test_support.TESTFN)
  74         except OSError:
  75             pass
  76         files = set()
  77         for name in self.files:
  78             name = os.path.join(test_support.TESTFN, self.norm(name))
  79             with open(name, 'w') as f:
  80                 f.write((name+'\n').encode("utf-8"))
  81             os.stat(name)
  82             files.add(name)
  83         self.files = files
  84
  85     def tearDown(self):
  86         deltree(test_support.TESTFN)
  87
  88     def norm(self, s):
  89         if self.normal_form and isinstance(s, unicode):
  90             return normalize(self.normal_form, s)
  91         return s
  92
  93     def _apply_failure(self, fn, filename, expected_exception,
  94                        check_fn_in_exception = True):
  95         with self.assertRaises(expected_exception) as c:
  96             fn(filename)
  97         exc_filename = c.exception.filename
  98         # the "filename" exception attribute may be encoded
  99         if isinstance(exc_filename, str):
 100             filename = filename.encode(sys.getfilesystemencoding())
 101         if check_fn_in_exception:
 102             self.assertEqual(exc_filename, filename, "Function '%s(%r) failed "
 103                              "with bad filename in the exception: %r" %
 104                              (fn.__name__, filename, exc_filename))
 105
 106     def test_failures(self):
 107         # Pass non-existing Unicode filenames all over the place.
 108         for name in self.files:
 109             name = "not_" + name
 110             self._apply_failure(open, name, IOError)
 111             self._apply_failure(os.stat, name, OSError)
 112             self._apply_failure(os.chdir, name, OSError)
 113             self._apply_failure(os.rmdir, name, OSError)
 114             self._apply_failure(os.remove, name, OSError)
 115             # listdir may append a wildcard to the filename, so dont check
 116             self._apply_failure(os.listdir, name, OSError, False)
 117
 118     def test_open(self):
 119         for name in self.files:
 120             f = open(name, 'w')
 121             f.write((name+'\n').encode("utf-8"))
 122             f.close()
 123             os.stat(name)
 124
 125     # Skip the test on darwin, because darwin does normalize the filename to
 126     # NFD (a variant of Unicode NFD form). Normalize the filename to NFC, NFKC,
 127     # NFKD in Python is useless, because darwin will normalize it later and so
 128     # open(), os.stat(), etc. don't raise any exception.
 129     @unittest.skipIf(sys.platform == 'darwin', 'irrelevant test on Mac OS X')
 130     def test_normalize(self):
 131         files = set(f for f in self.files if isinstance(f, unicode))
 132         others = set()
 133         for nf in set(['NFC', 'NFD', 'NFKC', 'NFKD']):
 134             others |= set(normalize(nf, file) for file in files)
 135         others -= files
 136         for name in others:
 137             self._apply_failure(open, name, IOError)
 138             self._apply_failure(os.stat, name, OSError)
 139             self._apply_failure(os.chdir, name, OSError)
 140             self._apply_failure(os.rmdir, name, OSError)
 141             self._apply_failure(os.remove, name, OSError)
 142             # listdir may append a wildcard to the filename, so dont check
 143             self._apply_failure(os.listdir, name, OSError, False)
 144
 145     # Skip the test on darwin, because darwin uses a normalization different
 146     # than Python NFD normalization: filenames are different even if we use
 147     # Python NFD normalization.
 148     @unittest.skipIf(sys.platform == 'darwin', 'irrelevant test on Mac OS X')
 149     def test_listdir(self):
 150         sf0 = set(self.files)
 151         f1 = os.listdir(test_support.TESTFN)
 152         f2 = os.listdir(unicode(test_support.TESTFN,
 153                                 sys.getfilesystemencoding()))
 154         sf2 = set(os.path.join(unicode(test_support.TESTFN), f) for f in f2)
 155         self.assertEqual(sf0, sf2)
 156         self.assertEqual(len(f1), len(f2))
 157
 158     def test_rename(self):
 159         for name in self.files:
 160             os.rename(name, "tmp")
 161             os.rename("tmp", name)
 162
 163     def test_directory(self):
 164         dirname = os.path.join(test_support.TESTFN,
 165                                u'Gr\xfc\xdf-\u66e8\u66e9\u66eb')
 166         filename = u'\xdf-\u66e8\u66e9\u66eb'
 167         oldwd = os.getcwd()
 168         os.mkdir(dirname)
 169         os.chdir(dirname)
 170         try:
 171             with open(filename, 'w') as f:
 172                 f.write((filename + '\n').encode("utf-8"))
 173             os.access(filename,os.R_OK)
 174             os.remove(filename)
 175         finally:
 176             os.chdir(oldwd)
 177             os.rmdir(dirname)
 178
 179
 180 class UnicodeNFCFileTests(UnicodeFileTests):
 181     normal_form = 'NFC'
 182
 183
 184 class UnicodeNFDFileTests(UnicodeFileTests):
 185     normal_form = 'NFD'
 186
 187
 188 class UnicodeNFKCFileTests(UnicodeFileTests):
 189     normal_form = 'NFKC'
 190
 191
 192 class UnicodeNFKDFileTests(UnicodeFileTests):
 193     normal_form = 'NFKD'
 194
 195
 196 def test_main():
 197     try:
 198         test_support.run_unittest(
 199             UnicodeFileTests,
 200             UnicodeNFCFileTests,
 201             UnicodeNFDFileTests,
 202             UnicodeNFKCFileTests,
 203             UnicodeNFKDFileTests,
 204         )
 205     finally:
 206         deltree(test_support.TESTFN)
 207
 208
 209 if __name__ == "__main__":
 210     test_main()