Patch #1443155: Add the incremental codecs support for CJK codecs.
(reviewed by Walter Dörwald)
diff --git a/Lib/test/test_multibytecodec.py b/Lib/test/test_multibytecodec.py
index aef7931..8f9f6e9 100644
--- a/Lib/test/test_multibytecodec.py
+++ b/Lib/test/test_multibytecodec.py
@@ -9,11 +9,106 @@
from test import test_multibytecodec_support
import unittest, StringIO, codecs
+class Test_MultibyteCodec(unittest.TestCase):
+
+ def test_nullcoding(self):
+ self.assertEqual(''.decode('gb18030'), u'')
+ self.assertEqual(unicode('', 'gb18030'), u'')
+ self.assertEqual(u''.encode('gb18030'), '')
+
+ def test_str_decode(self):
+ self.assertEqual('abcd'.encode('gb18030'), 'abcd')
+
+
+class Test_IncrementalEncoder(unittest.TestCase):
+
+ def test_stateless(self):
+ # cp949 encoder isn't stateful at all.
+ encoder = codecs.getincrementalencoder('cp949')()
+ self.assertEqual(encoder.encode(u'\ud30c\uc774\uc36c \ub9c8\uc744'),
+ '\xc6\xc4\xc0\xcc\xbd\xe3 \xb8\xb6\xc0\xbb')
+ self.assertEqual(encoder.reset(), None)
+ self.assertEqual(encoder.encode(u'\u2606\u223c\u2606', True),
+ '\xa1\xd9\xa1\xad\xa1\xd9')
+ self.assertEqual(encoder.reset(), None)
+ self.assertEqual(encoder.encode(u'', True), '')
+ self.assertEqual(encoder.encode(u'', False), '')
+ self.assertEqual(encoder.reset(), None)
+
+ def test_stateful(self):
+ # jisx0213 encoder is stateful for a few codepoints. eg)
+ # U+00E6 => A9DC
+ # U+00E6 U+0300 => ABC4
+ # U+0300 => ABDC
+
+ encoder = codecs.getincrementalencoder('jisx0213')()
+ self.assertEqual(encoder.encode(u'\u00e6\u0300'), '\xab\xc4')
+ self.assertEqual(encoder.encode(u'\u00e6'), '')
+ self.assertEqual(encoder.encode(u'\u0300'), '\xab\xc4')
+ self.assertEqual(encoder.encode(u'\u00e6', True), '\xa9\xdc')
+
+ self.assertEqual(encoder.reset(), None)
+ self.assertEqual(encoder.encode(u'\u0300'), '\xab\xdc')
+
+ self.assertEqual(encoder.encode(u'\u00e6'), '')
+ self.assertEqual(encoder.encode('', True), '\xa9\xdc')
+ self.assertEqual(encoder.encode('', True), '')
+
+ def test_stateful_keep_buffer(self):
+ encoder = codecs.getincrementalencoder('jisx0213')()
+ self.assertEqual(encoder.encode(u'\u00e6'), '')
+ self.assertRaises(UnicodeEncodeError, encoder.encode, u'\u0123')
+ self.assertEqual(encoder.encode(u'\u0300\u00e6'), '\xab\xc4')
+ self.assertRaises(UnicodeEncodeError, encoder.encode, u'\u0123')
+ self.assertEqual(encoder.reset(), None)
+ self.assertEqual(encoder.encode(u'\u0300'), '\xab\xdc')
+ self.assertEqual(encoder.encode(u'\u00e6'), '')
+ self.assertRaises(UnicodeEncodeError, encoder.encode, u'\u0123')
+ self.assertEqual(encoder.encode(u'', True), '\xa9\xdc')
+
+
+class Test_IncrementalDecoder(unittest.TestCase):
+
+ def test_dbcs(self):
+ # cp949 decoder is simple with only 1 or 2 bytes sequences.
+ decoder = codecs.getincrementaldecoder('cp949')()
+ self.assertEqual(decoder.decode('\xc6\xc4\xc0\xcc\xbd'),
+ u'\ud30c\uc774')
+ self.assertEqual(decoder.decode('\xe3 \xb8\xb6\xc0\xbb'),
+ u'\uc36c \ub9c8\uc744')
+ self.assertEqual(decoder.decode(''), u'')
+
+ def test_dbcs_keep_buffer(self):
+ decoder = codecs.getincrementaldecoder('cp949')()
+ self.assertEqual(decoder.decode('\xc6\xc4\xc0'), u'\ud30c')
+ self.assertRaises(UnicodeDecodeError, decoder.decode, '', True)
+ self.assertEqual(decoder.decode('\xcc'), u'\uc774')
+
+ self.assertEqual(decoder.decode('\xc6\xc4\xc0'), u'\ud30c')
+ self.assertRaises(UnicodeDecodeError, decoder.decode, '\xcc\xbd', True)
+ self.assertEqual(decoder.decode('\xcc'), u'\uc774')
+
+ def test_iso2022(self):
+ decoder = codecs.getincrementaldecoder('iso2022-jp')()
+ ESC = '\x1b'
+ self.assertEqual(decoder.decode(ESC + '('), u'')
+ self.assertEqual(decoder.decode('B', True), u'')
+ self.assertEqual(decoder.decode(ESC + '$'), u'')
+ self.assertEqual(decoder.decode('B@$'), u'\u4e16')
+ self.assertEqual(decoder.decode('@$@'), u'\u4e16')
+ self.assertEqual(decoder.decode('$', True), u'\u4e16')
+ self.assertEqual(decoder.reset(), None)
+ self.assertEqual(decoder.decode('@$'), u'@$')
+ self.assertEqual(decoder.decode(ESC + '$'), u'')
+ self.assertRaises(UnicodeDecodeError, decoder.decode, '', True)
+ self.assertEqual(decoder.decode('B@$'), u'\u4e16')
+
+
class Test_StreamWriter(unittest.TestCase):
if len(u'\U00012345') == 2: # UCS2
def test_gb18030(self):
s= StringIO.StringIO()
- c = codecs.lookup('gb18030')[3](s)
+ c = codecs.getwriter('gb18030')(s)
c.write(u'123')
self.assertEqual(s.getvalue(), '123')
c.write(u'\U00012345')
@@ -30,15 +125,16 @@
self.assertEqual(s.getvalue(),
'123\x907\x959\x907\x959\x907\x959\x827\xcf5\x810\x851')
- # standard utf-8 codecs has broken StreamReader
- if test_multibytecodec_support.__cjkcodecs__:
- def test_utf_8(self):
- s= StringIO.StringIO()
- c = codecs.lookup('utf-8')[3](s)
- c.write(u'123')
- self.assertEqual(s.getvalue(), '123')
- c.write(u'\U00012345')
- self.assertEqual(s.getvalue(), '123\xf0\x92\x8d\x85')
+ def test_utf_8(self):
+ s= StringIO.StringIO()
+ c = codecs.getwriter('utf-8')(s)
+ c.write(u'123')
+ self.assertEqual(s.getvalue(), '123')
+ c.write(u'\U00012345')
+ self.assertEqual(s.getvalue(), '123\xf0\x92\x8d\x85')
+
+ # Python utf-8 codec can't buffer surrogate pairs yet.
+ if 0:
c.write(u'\U00012345'[0])
self.assertEqual(s.getvalue(), '123\xf0\x92\x8d\x85')
c.write(u'\U00012345'[1] + u'\U00012345' + u'\uac00\u00ac')
@@ -61,14 +157,6 @@
else: # UCS4
pass
- def test_nullcoding(self):
- self.assertEqual(''.decode('gb18030'), u'')
- self.assertEqual(unicode('', 'gb18030'), u'')
- self.assertEqual(u''.encode('gb18030'), '')
-
- def test_str_decode(self):
- self.assertEqual('abcd'.encode('gb18030'), 'abcd')
-
def test_streamwriter_strwrite(self):
s = StringIO.StringIO()
wr = codecs.getwriter('gb18030')(s)
@@ -83,6 +171,9 @@
def test_main():
suite = unittest.TestSuite()
+ suite.addTest(unittest.makeSuite(Test_MultibyteCodec))
+ suite.addTest(unittest.makeSuite(Test_IncrementalEncoder))
+ suite.addTest(unittest.makeSuite(Test_IncrementalDecoder))
suite.addTest(unittest.makeSuite(Test_StreamWriter))
suite.addTest(unittest.makeSuite(Test_ISO2022))
test_support.run_suite(suite)