AppPkg/Applications/Python/Python-2.7.2/Lib/test/test_multibytecodec.py

   1 #!/usr/bin/env python
   2 #
   3 # test_multibytecodec.py
   4 #   Unit test for multibytecodec itself
   5 #
   6
   7 from test import test_support
   8 from test.test_support import TESTFN
   9 import unittest, StringIO, codecs, sys, os
  10 import _multibytecodec
  11
  12 ALL_CJKENCODINGS = [
  13 # _codecs_cn
  14     'gb2312', 'gbk', 'gb18030', 'hz',
  15 # _codecs_hk
  16     'big5hkscs',
  17 # _codecs_jp
  18     'cp932', 'shift_jis', 'euc_jp', 'euc_jisx0213', 'shift_jisx0213',
  19     'euc_jis_2004', 'shift_jis_2004',
  20 # _codecs_kr
  21     'cp949', 'euc_kr', 'johab',
  22 # _codecs_tw
  23     'big5', 'cp950',
  24 # _codecs_iso2022
  25     'iso2022_jp', 'iso2022_jp_1', 'iso2022_jp_2', 'iso2022_jp_2004',
  26     'iso2022_jp_3', 'iso2022_jp_ext', 'iso2022_kr',
  27 ]
  28
  29 class Test_MultibyteCodec(unittest.TestCase):
  30
  31     def test_nullcoding(self):
  32         for enc in ALL_CJKENCODINGS:
  33             self.assertEqual(''.decode(enc), u'')
  34             self.assertEqual(unicode('', enc), u'')
  35             self.assertEqual(u''.encode(enc), '')
  36
  37     def test_str_decode(self):
  38         for enc in ALL_CJKENCODINGS:
  39             self.assertEqual('abcd'.encode(enc), 'abcd')
  40
  41     def test_errorcallback_longindex(self):
  42         dec = codecs.getdecoder('euc-kr')
  43         myreplace  = lambda exc: (u'', sys.maxint+1)
  44         codecs.register_error('test.cjktest', myreplace)
  45         self.assertRaises(IndexError, dec,
  46                           'apple\x92ham\x93spam', 'test.cjktest')
  47
  48     def test_codingspec(self):
  49         for enc in ALL_CJKENCODINGS:
  50             code = '# coding: {}\n'.format(enc)
  51             exec code
  52
  53     def test_init_segfault(self):
  54         # bug #3305: this used to segfault
  55         self.assertRaises(AttributeError,
  56                           _multibytecodec.MultibyteStreamReader, None)
  57         self.assertRaises(AttributeError,
  58                           _multibytecodec.MultibyteStreamWriter, None)
  59
  60
  61 class Test_IncrementalEncoder(unittest.TestCase):
  62
  63     def test_stateless(self):
  64         # cp949 encoder isn't stateful at all.
  65         encoder = codecs.getincrementalencoder('cp949')()
  66         self.assertEqual(encoder.encode(u'\ud30c\uc774\uc36c \ub9c8\uc744'),
  67                          '\xc6\xc4\xc0\xcc\xbd\xe3 \xb8\xb6\xc0\xbb')
  68         self.assertEqual(encoder.reset(), None)
  69         self.assertEqual(encoder.encode(u'\u2606\u223c\u2606', True),
  70                          '\xa1\xd9\xa1\xad\xa1\xd9')
  71         self.assertEqual(encoder.reset(), None)
  72         self.assertEqual(encoder.encode(u'', True), '')
  73         self.assertEqual(encoder.encode(u'', False), '')
  74         self.assertEqual(encoder.reset(), None)
  75
  76     def test_stateful(self):
  77         # jisx0213 encoder is stateful for a few codepoints. eg)
  78         #   U+00E6 => A9DC
  79         #   U+00E6 U+0300 => ABC4
  80         #   U+0300 => ABDC
  81
  82         encoder = codecs.getincrementalencoder('jisx0213')()
  83         self.assertEqual(encoder.encode(u'\u00e6\u0300'), '\xab\xc4')
  84         self.assertEqual(encoder.encode(u'\u00e6'), '')
  85         self.assertEqual(encoder.encode(u'\u0300'), '\xab\xc4')
  86         self.assertEqual(encoder.encode(u'\u00e6', True), '\xa9\xdc')
  87
  88         self.assertEqual(encoder.reset(), None)
  89         self.assertEqual(encoder.encode(u'\u0300'), '\xab\xdc')
  90
  91         self.assertEqual(encoder.encode(u'\u00e6'), '')
  92         self.assertEqual(encoder.encode('', True), '\xa9\xdc')
  93         self.assertEqual(encoder.encode('', True), '')
  94
  95     def test_stateful_keep_buffer(self):
  96         encoder = codecs.getincrementalencoder('jisx0213')()
  97         self.assertEqual(encoder.encode(u'\u00e6'), '')
  98         self.assertRaises(UnicodeEncodeError, encoder.encode, u'\u0123')
  99         self.assertEqual(encoder.encode(u'\u0300\u00e6'), '\xab\xc4')
 100         self.assertRaises(UnicodeEncodeError, encoder.encode, u'\u0123')
 101         self.assertEqual(encoder.reset(), None)
 102         self.assertEqual(encoder.encode(u'\u0300'), '\xab\xdc')
 103         self.assertEqual(encoder.encode(u'\u00e6'), '')
 104         self.assertRaises(UnicodeEncodeError, encoder.encode, u'\u0123')
 105         self.assertEqual(encoder.encode(u'', True), '\xa9\xdc')
 106
 107     def test_issue5640(self):
 108         encoder = codecs.getincrementalencoder('shift-jis')('backslashreplace')
 109         self.assertEqual(encoder.encode(u'\xff'), b'\\xff')
 110         self.assertEqual(encoder.encode(u'\n'), b'\n')
 111
 112 class Test_IncrementalDecoder(unittest.TestCase):
 113
 114     def test_dbcs(self):
 115         # cp949 decoder is simple with only 1 or 2 bytes sequences.
 116         decoder = codecs.getincrementaldecoder('cp949')()
 117         self.assertEqual(decoder.decode('\xc6\xc4\xc0\xcc\xbd'),
 118                          u'\ud30c\uc774')
 119         self.assertEqual(decoder.decode('\xe3 \xb8\xb6\xc0\xbb'),
 120                          u'\uc36c \ub9c8\uc744')
 121         self.assertEqual(decoder.decode(''), u'')
 122
 123     def test_dbcs_keep_buffer(self):
 124         decoder = codecs.getincrementaldecoder('cp949')()
 125         self.assertEqual(decoder.decode('\xc6\xc4\xc0'), u'\ud30c')
 126         self.assertRaises(UnicodeDecodeError, decoder.decode, '', True)
 127         self.assertEqual(decoder.decode('\xcc'), u'\uc774')
 128
 129         self.assertEqual(decoder.decode('\xc6\xc4\xc0'), u'\ud30c')
 130         self.assertRaises(UnicodeDecodeError, decoder.decode, '\xcc\xbd', True)
 131         self.assertEqual(decoder.decode('\xcc'), u'\uc774')
 132
 133     def test_iso2022(self):
 134         decoder = codecs.getincrementaldecoder('iso2022-jp')()
 135         ESC = '\x1b'
 136         self.assertEqual(decoder.decode(ESC + '('), u'')
 137         self.assertEqual(decoder.decode('B', True), u'')
 138         self.assertEqual(decoder.decode(ESC + '$'), u'')
 139         self.assertEqual(decoder.decode('B@$'), u'\u4e16')
 140         self.assertEqual(decoder.decode('@$@'), u'\u4e16')
 141         self.assertEqual(decoder.decode('$', True), u'\u4e16')
 142         self.assertEqual(decoder.reset(), None)
 143         self.assertEqual(decoder.decode('@$'), u'@$')
 144         self.assertEqual(decoder.decode(ESC + '$'), u'')
 145         self.assertRaises(UnicodeDecodeError, decoder.decode, '', True)
 146         self.assertEqual(decoder.decode('B@$'), u'\u4e16')
 147
 148 class Test_StreamReader(unittest.TestCase):
 149     def test_bug1728403(self):
 150         try:
 151             open(TESTFN, 'w').write('\xa1')
 152             f = codecs.open(TESTFN, encoding='cp949')
 153             self.assertRaises(UnicodeDecodeError, f.read, 2)
 154         finally:
 155             try: f.close()
 156             except: pass
 157             os.unlink(TESTFN)
 158
 159 class Test_StreamWriter(unittest.TestCase):
 160     if len(u'\U00012345') == 2: # UCS2
 161         def test_gb18030(self):
 162             s = StringIO.StringIO()
 163             c = codecs.getwriter('gb18030')(s)
 164             c.write(u'123')
 165             self.assertEqual(s.getvalue(), '123')
 166             c.write(u'\U00012345')
 167             self.assertEqual(s.getvalue(), '123\x907\x959')
 168             c.write(u'\U00012345'[0])
 169             self.assertEqual(s.getvalue(), '123\x907\x959')
 170             c.write(u'\U00012345'[1] + u'\U00012345' + u'\uac00\u00ac')
 171             self.assertEqual(s.getvalue(),
 172                     '123\x907\x959\x907\x959\x907\x959\x827\xcf5\x810\x851')
 173             c.write(u'\U00012345'[0])
 174             self.assertEqual(s.getvalue(),
 175                     '123\x907\x959\x907\x959\x907\x959\x827\xcf5\x810\x851')
 176             self.assertRaises(UnicodeError, c.reset)
 177             self.assertEqual(s.getvalue(),
 178                     '123\x907\x959\x907\x959\x907\x959\x827\xcf5\x810\x851')
 179
 180         def test_utf_8(self):
 181             s= StringIO.StringIO()
 182             c = codecs.getwriter('utf-8')(s)
 183             c.write(u'123')
 184             self.assertEqual(s.getvalue(), '123')
 185             c.write(u'\U00012345')
 186             self.assertEqual(s.getvalue(), '123\xf0\x92\x8d\x85')
 187
 188             # Python utf-8 codec can't buffer surrogate pairs yet.
 189             if 0:
 190                 c.write(u'\U00012345'[0])
 191                 self.assertEqual(s.getvalue(), '123\xf0\x92\x8d\x85')
 192                 c.write(u'\U00012345'[1] + u'\U00012345' + u'\uac00\u00ac')
 193                 self.assertEqual(s.getvalue(),
 194                     '123\xf0\x92\x8d\x85\xf0\x92\x8d\x85\xf0\x92\x8d\x85'
 195                     '\xea\xb0\x80\xc2\xac')
 196                 c.write(u'\U00012345'[0])
 197                 self.assertEqual(s.getvalue(),
 198                     '123\xf0\x92\x8d\x85\xf0\x92\x8d\x85\xf0\x92\x8d\x85'
 199                     '\xea\xb0\x80\xc2\xac')
 200                 c.reset()
 201                 self.assertEqual(s.getvalue(),
 202                     '123\xf0\x92\x8d\x85\xf0\x92\x8d\x85\xf0\x92\x8d\x85'
 203                     '\xea\xb0\x80\xc2\xac\xed\xa0\x88')
 204                 c.write(u'\U00012345'[1])
 205                 self.assertEqual(s.getvalue(),
 206                     '123\xf0\x92\x8d\x85\xf0\x92\x8d\x85\xf0\x92\x8d\x85'
 207                     '\xea\xb0\x80\xc2\xac\xed\xa0\x88\xed\xbd\x85')
 208
 209     else: # UCS4
 210         pass
 211
 212     def test_streamwriter_strwrite(self):
 213         s = StringIO.StringIO()
 214         wr = codecs.getwriter('gb18030')(s)
 215         wr.write('abcd')
 216         self.assertEqual(s.getvalue(), 'abcd')
 217
 218 class Test_ISO2022(unittest.TestCase):
 219     def test_g2(self):
 220         iso2022jp2 = '\x1b(B:hu4:unit\x1b.A\x1bNi de famille'
 221         uni = u':hu4:unit\xe9 de famille'
 222         self.assertEqual(iso2022jp2.decode('iso2022-jp-2'), uni)
 223
 224     def test_iso2022_jp_g0(self):
 225         self.assertNotIn('\x0e', u'\N{SOFT HYPHEN}'.encode('iso-2022-jp-2'))
 226         for encoding in ('iso-2022-jp-2004', 'iso-2022-jp-3'):
 227             e = u'\u3406'.encode(encoding)
 228             self.assertFalse(filter(lambda x: x >= '\x80', e))
 229
 230     def test_bug1572832(self):
 231         if sys.maxunicode >= 0x10000:
 232             myunichr = unichr
 233         else:
 234             myunichr = lambda x: unichr(0xD7C0+(x>>10)) + unichr(0xDC00+(x&0x3FF))
 235
 236         for x in xrange(0x10000, 0x110000):
 237             # Any ISO 2022 codec will cause the segfault
 238             myunichr(x).encode('iso_2022_jp', 'ignore')
 239
 240 class TestStateful(unittest.TestCase):
 241     text = u'\u4E16\u4E16'
 242     encoding = 'iso-2022-jp'
 243     expected = b'\x1b$B@$@$'
 244     expected_reset = b'\x1b$B@$@$\x1b(B'
 245
 246     def test_encode(self):
 247         self.assertEqual(self.text.encode(self.encoding), self.expected_reset)
 248
 249     def test_incrementalencoder(self):
 250         encoder = codecs.getincrementalencoder(self.encoding)()
 251         output = b''.join(
 252             encoder.encode(char)
 253             for char in self.text)
 254         self.assertEqual(output, self.expected)
 255
 256     def test_incrementalencoder_final(self):
 257         encoder = codecs.getincrementalencoder(self.encoding)()
 258         last_index = len(self.text) - 1
 259         output = b''.join(
 260             encoder.encode(char, index == last_index)
 261             for index, char in enumerate(self.text))
 262         self.assertEqual(output, self.expected_reset)
 263
 264 class TestHZStateful(TestStateful):
 265     text = u'\u804a\u804a'
 266     encoding = 'hz'
 267     expected = b'~{ADAD'
 268     expected_reset = b'~{ADAD~}'
 269
 270 def test_main():
 271     test_support.run_unittest(__name__)
 272
 273 if __name__ == "__main__":
 274     test_main()