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

   1 #!/usr/bin/env python
   2 #
   3 # test_multibytecodec_support.py
   4 #   Common Unittest Routines for CJK codecs
   5 #
   6
   7 import codecs
   8 import os
   9 import re
  10 import sys
  11 import unittest
  12 from httplib import HTTPException
  13 from test import test_support
  14 from StringIO import StringIO
  15
  16 class TestBase:
  17     encoding        = ''   # codec name
  18     codec           = None # codec tuple (with 4 elements)
  19     tstring         = ''   # string to test StreamReader
  20
  21     codectests      = None # must set. codec test tuple
  22     roundtriptest   = 1    # set if roundtrip is possible with unicode
  23     has_iso10646    = 0    # set if this encoding contains whole iso10646 map
  24     xmlcharnametest = None # string to test xmlcharrefreplace
  25     unmappedunicode = u'\udeee' # a unicode codepoint that is not mapped.
  26
  27     def setUp(self):
  28         if self.codec is None:
  29             self.codec = codecs.lookup(self.encoding)
  30         self.encode = self.codec.encode
  31         self.decode = self.codec.decode
  32         self.reader = self.codec.streamreader
  33         self.writer = self.codec.streamwriter
  34         self.incrementalencoder = self.codec.incrementalencoder
  35         self.incrementaldecoder = self.codec.incrementaldecoder
  36
  37     def test_chunkcoding(self):
  38         for native, utf8 in zip(*[StringIO(f).readlines()
  39                                   for f in self.tstring]):
  40             u = self.decode(native)[0]
  41             self.assertEqual(u, utf8.decode('utf-8'))
  42             if self.roundtriptest:
  43                 self.assertEqual(native, self.encode(u)[0])
  44
  45     def test_errorhandle(self):
  46         for source, scheme, expected in self.codectests:
  47             if type(source) == type(''):
  48                 func = self.decode
  49             else:
  50                 func = self.encode
  51             if expected:
  52                 result = func(source, scheme)[0]
  53                 self.assertEqual(result, expected)
  54             else:
  55                 self.assertRaises(UnicodeError, func, source, scheme)
  56
  57     def test_xmlcharrefreplace(self):
  58         if self.has_iso10646:
  59             return
  60
  61         s = u"\u0b13\u0b23\u0b60 nd eggs"
  62         self.assertEqual(
  63             self.encode(s, "xmlcharrefreplace")[0],
  64             "&#2835;&#2851;&#2912; nd eggs"
  65         )
  66
  67     def test_customreplace_encode(self):
  68         if self.has_iso10646:
  69             return
  70
  71         from htmlentitydefs import codepoint2name
  72
  73         def xmlcharnamereplace(exc):
  74             if not isinstance(exc, UnicodeEncodeError):
  75                 raise TypeError("don't know how to handle %r" % exc)
  76             l = []
  77             for c in exc.object[exc.start:exc.end]:
  78                 if ord(c) in codepoint2name:
  79                     l.append(u"&%s;" % codepoint2name[ord(c)])
  80                 else:
  81                     l.append(u"&#%d;" % ord(c))
  82             return (u"".join(l), exc.end)
  83
  84         codecs.register_error("test.xmlcharnamereplace", xmlcharnamereplace)
  85
  86         if self.xmlcharnametest:
  87             sin, sout = self.xmlcharnametest
  88         else:
  89             sin = u"\xab\u211c\xbb = \u2329\u1234\u232a"
  90             sout = "&laquo;&real;&raquo; = &lang;&#4660;&rang;"
  91         self.assertEqual(self.encode(sin,
  92                                     "test.xmlcharnamereplace")[0], sout)
  93
  94     def test_callback_wrong_objects(self):
  95         def myreplace(exc):
  96             return (ret, exc.end)
  97         codecs.register_error("test.cjktest", myreplace)
  98
  99         for ret in ([1, 2, 3], [], None, object(), 'string', ''):
 100             self.assertRaises(TypeError, self.encode, self.unmappedunicode,
 101                               'test.cjktest')
 102
 103     def test_callback_long_index(self):
 104         def myreplace(exc):
 105             return (u'x', long(exc.end))
 106         codecs.register_error("test.cjktest", myreplace)
 107         self.assertEqual(self.encode(u'abcd' + self.unmappedunicode + u'efgh',
 108                                      'test.cjktest'), ('abcdxefgh', 9))
 109
 110         def myreplace(exc):
 111             return (u'x', sys.maxint + 1)
 112         codecs.register_error("test.cjktest", myreplace)
 113         self.assertRaises(IndexError, self.encode, self.unmappedunicode,
 114                           'test.cjktest')
 115
 116     def test_callback_None_index(self):
 117         def myreplace(exc):
 118             return (u'x', None)
 119         codecs.register_error("test.cjktest", myreplace)
 120         self.assertRaises(TypeError, self.encode, self.unmappedunicode,
 121                           'test.cjktest')
 122
 123     def test_callback_backward_index(self):
 124         def myreplace(exc):
 125             if myreplace.limit > 0:
 126                 myreplace.limit -= 1
 127                 return (u'REPLACED', 0)
 128             else:
 129                 return (u'TERMINAL', exc.end)
 130         myreplace.limit = 3
 131         codecs.register_error("test.cjktest", myreplace)
 132         self.assertEqual(self.encode(u'abcd' + self.unmappedunicode + u'efgh',
 133                                      'test.cjktest'),
 134                 ('abcdREPLACEDabcdREPLACEDabcdREPLACEDabcdTERMINALefgh', 9))
 135
 136     def test_callback_forward_index(self):
 137         def myreplace(exc):
 138             return (u'REPLACED', exc.end + 2)
 139         codecs.register_error("test.cjktest", myreplace)
 140         self.assertEqual(self.encode(u'abcd' + self.unmappedunicode + u'efgh',
 141                                      'test.cjktest'), ('abcdREPLACEDgh', 9))
 142
 143     def test_callback_index_outofbound(self):
 144         def myreplace(exc):
 145             return (u'TERM', 100)
 146         codecs.register_error("test.cjktest", myreplace)
 147         self.assertRaises(IndexError, self.encode, self.unmappedunicode,
 148                           'test.cjktest')
 149
 150     def test_incrementalencoder(self):
 151         UTF8Reader = codecs.getreader('utf-8')
 152         for sizehint in [None] + range(1, 33) + \
 153                         [64, 128, 256, 512, 1024]:
 154             istream = UTF8Reader(StringIO(self.tstring[1]))
 155             ostream = StringIO()
 156             encoder = self.incrementalencoder()
 157             while 1:
 158                 if sizehint is not None:
 159                     data = istream.read(sizehint)
 160                 else:
 161                     data = istream.read()
 162
 163                 if not data:
 164                     break
 165                 e = encoder.encode(data)
 166                 ostream.write(e)
 167
 168             self.assertEqual(ostream.getvalue(), self.tstring[0])
 169
 170     def test_incrementaldecoder(self):
 171         UTF8Writer = codecs.getwriter('utf-8')
 172         for sizehint in [None, -1] + range(1, 33) + \
 173                         [64, 128, 256, 512, 1024]:
 174             istream = StringIO(self.tstring[0])
 175             ostream = UTF8Writer(StringIO())
 176             decoder = self.incrementaldecoder()
 177             while 1:
 178                 data = istream.read(sizehint)
 179                 if not data:
 180                     break
 181                 else:
 182                     u = decoder.decode(data)
 183                     ostream.write(u)
 184
 185             self.assertEqual(ostream.getvalue(), self.tstring[1])
 186
 187     def test_incrementalencoder_error_callback(self):
 188         inv = self.unmappedunicode
 189
 190         e = self.incrementalencoder()
 191         self.assertRaises(UnicodeEncodeError, e.encode, inv, True)
 192
 193         e.errors = 'ignore'
 194         self.assertEqual(e.encode(inv, True), '')
 195
 196         e.reset()
 197         def tempreplace(exc):
 198             return (u'called', exc.end)
 199         codecs.register_error('test.incremental_error_callback', tempreplace)
 200         e.errors = 'test.incremental_error_callback'
 201         self.assertEqual(e.encode(inv, True), 'called')
 202
 203         # again
 204         e.errors = 'ignore'
 205         self.assertEqual(e.encode(inv, True), '')
 206
 207     def test_streamreader(self):
 208         UTF8Writer = codecs.getwriter('utf-8')
 209         for name in ["read", "readline", "readlines"]:
 210             for sizehint in [None, -1] + range(1, 33) + \
 211                             [64, 128, 256, 512, 1024]:
 212                 istream = self.reader(StringIO(self.tstring[0]))
 213                 ostream = UTF8Writer(StringIO())
 214                 func = getattr(istream, name)
 215                 while 1:
 216                     data = func(sizehint)
 217                     if not data:
 218                         break
 219                     if name == "readlines":
 220                         ostream.writelines(data)
 221                     else:
 222                         ostream.write(data)
 223
 224                 self.assertEqual(ostream.getvalue(), self.tstring[1])
 225
 226     def test_streamwriter(self):
 227         readfuncs = ('read', 'readline', 'readlines')
 228         UTF8Reader = codecs.getreader('utf-8')
 229         for name in readfuncs:
 230             for sizehint in [None] + range(1, 33) + \
 231                             [64, 128, 256, 512, 1024]:
 232                 istream = UTF8Reader(StringIO(self.tstring[1]))
 233                 ostream = self.writer(StringIO())
 234                 func = getattr(istream, name)
 235                 while 1:
 236                     if sizehint is not None:
 237                         data = func(sizehint)
 238                     else:
 239                         data = func()
 240
 241                     if not data:
 242                         break
 243                     if name == "readlines":
 244                         ostream.writelines(data)
 245                     else:
 246                         ostream.write(data)
 247
 248                 self.assertEqual(ostream.getvalue(), self.tstring[0])
 249
 250 class TestBase_Mapping(unittest.TestCase):
 251     pass_enctest = []
 252     pass_dectest = []
 253     supmaps = []
 254
 255     def __init__(self, *args, **kw):
 256         unittest.TestCase.__init__(self, *args, **kw)
 257         try:
 258             self.open_mapping_file().close() # test it to report the error early
 259         except (IOError, HTTPException):
 260             self.skipTest("Could not retrieve "+self.mapfileurl)
 261
 262     def open_mapping_file(self):
 263         return test_support.open_urlresource(self.mapfileurl)
 264
 265     def test_mapping_file(self):
 266         if self.mapfileurl.endswith('.xml'):
 267             self._test_mapping_file_ucm()
 268         else:
 269             self._test_mapping_file_plain()
 270
 271     def _test_mapping_file_plain(self):
 272         _unichr = lambda c: eval("u'\\U%08x'" % int(c, 16))
 273         unichrs = lambda s: u''.join(_unichr(c) for c in s.split('+'))
 274         urt_wa = {}
 275
 276         with self.open_mapping_file() as f:
 277             for line in f:
 278                 if not line:
 279                     break
 280                 data = line.split('#')[0].strip().split()
 281                 if len(data) != 2:
 282                     continue
 283
 284                 csetval = eval(data[0])
 285                 if csetval <= 0x7F:
 286                     csetch = chr(csetval & 0xff)
 287                 elif csetval >= 0x1000000:
 288                     csetch = chr(csetval >> 24) + chr((csetval >> 16) & 0xff) + \
 289                              chr((csetval >> 8) & 0xff) + chr(csetval & 0xff)
 290                 elif csetval >= 0x10000:
 291                     csetch = chr(csetval >> 16) + \
 292                              chr((csetval >> 8) & 0xff) + chr(csetval & 0xff)
 293                 elif csetval >= 0x100:
 294                     csetch = chr(csetval >> 8) + chr(csetval & 0xff)
 295                 else:
 296                     continue
 297
 298                 unich = unichrs(data[1])
 299                 if unich == u'\ufffd' or unich in urt_wa:
 300                     continue
 301                 urt_wa[unich] = csetch
 302
 303                 self._testpoint(csetch, unich)
 304
 305     def _test_mapping_file_ucm(self):
 306         with self.open_mapping_file() as f:
 307             ucmdata = f.read()
 308         uc = re.findall('<a u="([A-F0-9]{4})" b="([0-9A-F ]+)"/>', ucmdata)
 309         for uni, coded in uc:
 310             unich = unichr(int(uni, 16))
 311             codech = ''.join(chr(int(c, 16)) for c in coded.split())
 312             self._testpoint(codech, unich)
 313
 314     def test_mapping_supplemental(self):
 315         for mapping in self.supmaps:
 316             self._testpoint(*mapping)
 317
 318     def _testpoint(self, csetch, unich):
 319         if (csetch, unich) not in self.pass_enctest:
 320             try:
 321                 self.assertEqual(unich.encode(self.encoding), csetch)
 322             except UnicodeError, exc:
 323                 self.fail('Encoding failed while testing %s -> %s: %s' % (
 324                             repr(unich), repr(csetch), exc.reason))
 325         if (csetch, unich) not in self.pass_dectest:
 326             try:
 327                 self.assertEqual(csetch.decode(self.encoding), unich)
 328             except UnicodeError, exc:
 329                 self.fail('Decoding failed while testing %s -> %s: %s' % (
 330                             repr(csetch), repr(unich), exc.reason))
 331
 332 def load_teststring(name):
 333     dir = os.path.join(os.path.dirname(__file__), 'cjkencodings')
 334     with open(os.path.join(dir, name + '.txt'), 'rb') as f:
 335         encoded = f.read()
 336     with open(os.path.join(dir, name + '-utf8.txt'), 'rb') as f:
 337         utf8 = f.read()
 338     return encoded, utf8