/Lib/test/test_multibytecodec_support.py

http://unladen-swallow.googlecode.com/ · Python · 340 lines · 284 code · 50 blank · 6 comment · 69 complexity · 824da66ea2976b1aacfa83d16bd5cb53 MD5 · raw file

  1. #!/usr/bin/env python
  2. #
  3. # test_multibytecodec_support.py
  4. # Common Unittest Routines for CJK codecs
  5. #
  6. import sys, codecs
  7. import unittest, re
  8. from test import test_support
  9. from StringIO import StringIO
  10. class TestBase:
  11. encoding = '' # codec name
  12. codec = None # codec tuple (with 4 elements)
  13. tstring = '' # string to test StreamReader
  14. codectests = None # must set. codec test tuple
  15. roundtriptest = 1 # set if roundtrip is possible with unicode
  16. has_iso10646 = 0 # set if this encoding contains whole iso10646 map
  17. xmlcharnametest = None # string to test xmlcharrefreplace
  18. unmappedunicode = u'\udeee' # a unicode codepoint that is not mapped.
  19. def setUp(self):
  20. if self.codec is None:
  21. self.codec = codecs.lookup(self.encoding)
  22. self.encode = self.codec.encode
  23. self.decode = self.codec.decode
  24. self.reader = self.codec.streamreader
  25. self.writer = self.codec.streamwriter
  26. self.incrementalencoder = self.codec.incrementalencoder
  27. self.incrementaldecoder = self.codec.incrementaldecoder
  28. def test_chunkcoding(self):
  29. for native, utf8 in zip(*[StringIO(f).readlines()
  30. for f in self.tstring]):
  31. u = self.decode(native)[0]
  32. self.assertEqual(u, utf8.decode('utf-8'))
  33. if self.roundtriptest:
  34. self.assertEqual(native, self.encode(u)[0])
  35. def test_errorhandle(self):
  36. for source, scheme, expected in self.codectests:
  37. if type(source) == type(''):
  38. func = self.decode
  39. else:
  40. func = self.encode
  41. if expected:
  42. result = func(source, scheme)[0]
  43. self.assertEqual(result, expected)
  44. else:
  45. self.assertRaises(UnicodeError, func, source, scheme)
  46. def test_xmlcharrefreplace(self):
  47. if self.has_iso10646:
  48. return
  49. s = u"\u0b13\u0b23\u0b60 nd eggs"
  50. self.assertEqual(
  51. self.encode(s, "xmlcharrefreplace")[0],
  52. "ଓଣୠ nd eggs"
  53. )
  54. def test_customreplace_encode(self):
  55. if self.has_iso10646:
  56. return
  57. from htmlentitydefs import codepoint2name
  58. def xmlcharnamereplace(exc):
  59. if not isinstance(exc, UnicodeEncodeError):
  60. raise TypeError("don't know how to handle %r" % exc)
  61. l = []
  62. for c in exc.object[exc.start:exc.end]:
  63. if ord(c) in codepoint2name:
  64. l.append(u"&%s;" % codepoint2name[ord(c)])
  65. else:
  66. l.append(u"&#%d;" % ord(c))
  67. return (u"".join(l), exc.end)
  68. codecs.register_error("test.xmlcharnamereplace", xmlcharnamereplace)
  69. if self.xmlcharnametest:
  70. sin, sout = self.xmlcharnametest
  71. else:
  72. sin = u"\xab\u211c\xbb = \u2329\u1234\u232a"
  73. sout = "«ℜ» = ⟨ሴ⟩"
  74. self.assertEqual(self.encode(sin,
  75. "test.xmlcharnamereplace")[0], sout)
  76. def test_callback_wrong_objects(self):
  77. def myreplace(exc):
  78. return (ret, exc.end)
  79. codecs.register_error("test.cjktest", myreplace)
  80. for ret in ([1, 2, 3], [], None, object(), 'string', ''):
  81. self.assertRaises(TypeError, self.encode, self.unmappedunicode,
  82. 'test.cjktest')
  83. def test_callback_long_index(self):
  84. def myreplace(exc):
  85. return (u'x', long(exc.end))
  86. codecs.register_error("test.cjktest", myreplace)
  87. self.assertEqual(self.encode(u'abcd' + self.unmappedunicode + u'efgh',
  88. 'test.cjktest'), ('abcdxefgh', 9))
  89. def myreplace(exc):
  90. return (u'x', sys.maxint + 1)
  91. codecs.register_error("test.cjktest", myreplace)
  92. self.assertRaises(IndexError, self.encode, self.unmappedunicode,
  93. 'test.cjktest')
  94. def test_callback_None_index(self):
  95. def myreplace(exc):
  96. return (u'x', None)
  97. codecs.register_error("test.cjktest", myreplace)
  98. self.assertRaises(TypeError, self.encode, self.unmappedunicode,
  99. 'test.cjktest')
  100. def test_callback_backward_index(self):
  101. def myreplace(exc):
  102. if myreplace.limit > 0:
  103. myreplace.limit -= 1
  104. return (u'REPLACED', 0)
  105. else:
  106. return (u'TERMINAL', exc.end)
  107. myreplace.limit = 3
  108. codecs.register_error("test.cjktest", myreplace)
  109. self.assertEqual(self.encode(u'abcd' + self.unmappedunicode + u'efgh',
  110. 'test.cjktest'),
  111. ('abcdREPLACEDabcdREPLACEDabcdREPLACEDabcdTERMINALefgh', 9))
  112. def test_callback_forward_index(self):
  113. def myreplace(exc):
  114. return (u'REPLACED', exc.end + 2)
  115. codecs.register_error("test.cjktest", myreplace)
  116. self.assertEqual(self.encode(u'abcd' + self.unmappedunicode + u'efgh',
  117. 'test.cjktest'), ('abcdREPLACEDgh', 9))
  118. def test_callback_index_outofbound(self):
  119. def myreplace(exc):
  120. return (u'TERM', 100)
  121. codecs.register_error("test.cjktest", myreplace)
  122. self.assertRaises(IndexError, self.encode, self.unmappedunicode,
  123. 'test.cjktest')
  124. def test_incrementalencoder(self):
  125. UTF8Reader = codecs.getreader('utf-8')
  126. for sizehint in [None] + range(1, 33) + \
  127. [64, 128, 256, 512, 1024]:
  128. istream = UTF8Reader(StringIO(self.tstring[1]))
  129. ostream = StringIO()
  130. encoder = self.incrementalencoder()
  131. while 1:
  132. if sizehint is not None:
  133. data = istream.read(sizehint)
  134. else:
  135. data = istream.read()
  136. if not data:
  137. break
  138. e = encoder.encode(data)
  139. ostream.write(e)
  140. self.assertEqual(ostream.getvalue(), self.tstring[0])
  141. def test_incrementaldecoder(self):
  142. UTF8Writer = codecs.getwriter('utf-8')
  143. for sizehint in [None, -1] + range(1, 33) + \
  144. [64, 128, 256, 512, 1024]:
  145. istream = StringIO(self.tstring[0])
  146. ostream = UTF8Writer(StringIO())
  147. decoder = self.incrementaldecoder()
  148. while 1:
  149. data = istream.read(sizehint)
  150. if not data:
  151. break
  152. else:
  153. u = decoder.decode(data)
  154. ostream.write(u)
  155. self.assertEqual(ostream.getvalue(), self.tstring[1])
  156. def test_incrementalencoder_error_callback(self):
  157. inv = self.unmappedunicode
  158. e = self.incrementalencoder()
  159. self.assertRaises(UnicodeEncodeError, e.encode, inv, True)
  160. e.errors = 'ignore'
  161. self.assertEqual(e.encode(inv, True), '')
  162. e.reset()
  163. def tempreplace(exc):
  164. return (u'called', exc.end)
  165. codecs.register_error('test.incremental_error_callback', tempreplace)
  166. e.errors = 'test.incremental_error_callback'
  167. self.assertEqual(e.encode(inv, True), 'called')
  168. # again
  169. e.errors = 'ignore'
  170. self.assertEqual(e.encode(inv, True), '')
  171. def test_streamreader(self):
  172. UTF8Writer = codecs.getwriter('utf-8')
  173. for name in ["read", "readline", "readlines"]:
  174. for sizehint in [None, -1] + range(1, 33) + \
  175. [64, 128, 256, 512, 1024]:
  176. istream = self.reader(StringIO(self.tstring[0]))
  177. ostream = UTF8Writer(StringIO())
  178. func = getattr(istream, name)
  179. while 1:
  180. data = func(sizehint)
  181. if not data:
  182. break
  183. if name == "readlines":
  184. ostream.writelines(data)
  185. else:
  186. ostream.write(data)
  187. self.assertEqual(ostream.getvalue(), self.tstring[1])
  188. def test_streamwriter(self):
  189. readfuncs = ('read', 'readline', 'readlines')
  190. UTF8Reader = codecs.getreader('utf-8')
  191. for name in readfuncs:
  192. for sizehint in [None] + range(1, 33) + \
  193. [64, 128, 256, 512, 1024]:
  194. istream = UTF8Reader(StringIO(self.tstring[1]))
  195. ostream = self.writer(StringIO())
  196. func = getattr(istream, name)
  197. while 1:
  198. if sizehint is not None:
  199. data = func(sizehint)
  200. else:
  201. data = func()
  202. if not data:
  203. break
  204. if name == "readlines":
  205. ostream.writelines(data)
  206. else:
  207. ostream.write(data)
  208. self.assertEqual(ostream.getvalue(), self.tstring[0])
  209. if len(u'\U00012345') == 2: # ucs2 build
  210. _unichr = unichr
  211. def unichr(v):
  212. if v >= 0x10000:
  213. return _unichr(0xd800 + ((v - 0x10000) >> 10)) + \
  214. _unichr(0xdc00 + ((v - 0x10000) & 0x3ff))
  215. else:
  216. return _unichr(v)
  217. _ord = ord
  218. def ord(c):
  219. if len(c) == 2:
  220. return 0x10000 + ((_ord(c[0]) - 0xd800) << 10) + \
  221. (ord(c[1]) - 0xdc00)
  222. else:
  223. return _ord(c)
  224. class TestBase_Mapping(unittest.TestCase):
  225. pass_enctest = []
  226. pass_dectest = []
  227. supmaps = []
  228. def __init__(self, *args, **kw):
  229. unittest.TestCase.__init__(self, *args, **kw)
  230. self.open_mapping_file() # test it to report the error early
  231. def open_mapping_file(self):
  232. return test_support.open_urlresource(self.mapfileurl)
  233. def test_mapping_file(self):
  234. if self.mapfileurl.endswith('.xml'):
  235. self._test_mapping_file_ucm()
  236. else:
  237. self._test_mapping_file_plain()
  238. def _test_mapping_file_plain(self):
  239. unichrs = lambda s: u''.join(map(unichr, map(eval, s.split('+'))))
  240. urt_wa = {}
  241. for line in self.open_mapping_file():
  242. if not line:
  243. break
  244. data = line.split('#')[0].strip().split()
  245. if len(data) != 2:
  246. continue
  247. csetval = eval(data[0])
  248. if csetval <= 0x7F:
  249. csetch = chr(csetval & 0xff)
  250. elif csetval >= 0x1000000:
  251. csetch = chr(csetval >> 24) + chr((csetval >> 16) & 0xff) + \
  252. chr((csetval >> 8) & 0xff) + chr(csetval & 0xff)
  253. elif csetval >= 0x10000:
  254. csetch = chr(csetval >> 16) + \
  255. chr((csetval >> 8) & 0xff) + chr(csetval & 0xff)
  256. elif csetval >= 0x100:
  257. csetch = chr(csetval >> 8) + chr(csetval & 0xff)
  258. else:
  259. continue
  260. unich = unichrs(data[1])
  261. if ord(unich) == 0xfffd or urt_wa.has_key(unich):
  262. continue
  263. urt_wa[unich] = csetch
  264. self._testpoint(csetch, unich)
  265. def _test_mapping_file_ucm(self):
  266. ucmdata = self.open_mapping_file().read()
  267. uc = re.findall('<a u="([A-F0-9]{4})" b="([0-9A-F ]+)"/>', ucmdata)
  268. for uni, coded in uc:
  269. unich = unichr(int(uni, 16))
  270. codech = ''.join(chr(int(c, 16)) for c in coded.split())
  271. self._testpoint(codech, unich)
  272. def test_mapping_supplemental(self):
  273. for mapping in self.supmaps:
  274. self._testpoint(*mapping)
  275. def _testpoint(self, csetch, unich):
  276. if (csetch, unich) not in self.pass_enctest:
  277. try:
  278. self.assertEqual(unich.encode(self.encoding), csetch)
  279. except UnicodeError, exc:
  280. self.fail('Encoding failed while testing %s -> %s: %s' % (
  281. repr(unich), repr(csetch), exc.reason))
  282. if (csetch, unich) not in self.pass_dectest:
  283. try:
  284. self.assertEqual(csetch.decode(self.encoding), unich)
  285. except UnicodeError, exc:
  286. self.fail('Decoding failed while testing %s -> %s: %s' % (
  287. repr(csetch), repr(unich), exc.reason))
  288. def load_teststring(encoding):
  289. from test import cjkencodings_test
  290. return cjkencodings_test.teststring[encoding]