[Python-checkins] python/dist/src/Lib/test test_codeccallbacks.py,NONE,1.1
doerwalter@users.sourceforge.net
doerwalter@users.sourceforge.net
Mon, 02 Sep 2002 06:14:33 -0700
Update of /cvsroot/python/python/dist/src/Lib/test
In directory usw-pr-cvs1:/tmp/cvs-serv19683/Lib/test
Added Files:
test_codeccallbacks.py
Log Message:
PEP 293 implemention (from SF patch http://www.python.org/sf/432401)
--- NEW FILE: test_codeccallbacks.py ---
import test.test_support, unittest
import sys, codecs, htmlentitydefs, unicodedata
class CodecCallbackTest(unittest.TestCase):
def test_xmlcharrefreplace(self):
# replace unencodable characters which numeric character entities.
# For ascii, latin-1 and charmaps this is completely implemented
# in C and should be reasonably fast.
s = u"\u30b9\u30d1\u30e2 \xe4nd eggs"
self.assertEqual(
s.encode("ascii", "xmlcharrefreplace"),
"スパモ änd eggs"
)
self.assertEqual(
s.encode("latin-1", "xmlcharrefreplace"),
"スパモ \xe4nd eggs"
)
def test_xmlcharnamereplace(self):
# This time use a named character entity for unencodable
# characters, if one is available.
names = {}
for (key, value) in htmlentitydefs.entitydefs.items():
if len(value)==1:
names[unicode(value, "latin-1")] = unicode(key, "latin-1")
else:
names[unichr(int(value[2:-1]))] = unicode(key, "latin-1")
def xmlcharnamereplace(exc):
if not isinstance(exc, UnicodeEncodeError):
raise TypeError("don't know how to handle %r" % exc)
l = []
for c in exc.object[exc.start:exc.end]:
try:
l.append(u"&%s;" % names[c])
except KeyError:
l.append(u"&#%d;" % ord(c))
return (u"".join(l), exc.end)
codecs.register_error(
"test.xmlcharnamereplace", xmlcharnamereplace)
sin = u"\xab\u211c\xbb = \u2329\u1234\u20ac\u232a"
sout = "«ℜ» = ⟨ሴ€⟩"
self.assertEqual(sin.encode("ascii", "test.xmlcharnamereplace"), sout)
sout = "\xabℜ\xbb = ⟨ሴ€⟩"
self.assertEqual(sin.encode("latin-1", "test.xmlcharnamereplace"), sout)
sout = "\xabℜ\xbb = ⟨ሴ\xa4⟩"
self.assertEqual(sin.encode("iso-8859-15", "test.xmlcharnamereplace"), sout)
def test_uninamereplace(self):
# We're using the names from the unicode database this time,
# and we're doing "systax highlighting" here, i.e. we include
# the replaced text in ANSI escape sequences. For this it is
# useful that the error handler is not called for every single
# unencodable character, but for a complete sequence of
# unencodable characters, otherwise we would output many
# unneccessary escape sequences.
def uninamereplace(exc):
if not isinstance(exc, UnicodeEncodeError):
raise TypeError("don't know how to handle %r" % exc)
l = []
for c in exc.object[exc.start:exc.end]:
l.append(unicodedata.name(c, u"0x%x" % ord(c)))
return (u"\033[1m%s\033[0m" % u", ".join(l), exc.end)
codecs.register_error(
"test.uninamereplace", uninamereplace)
sin = u"\xac\u1234\u20ac\u8000"
sout = "\033[1mNOT SIGN, ETHIOPIC SYLLABLE SEE, EURO SIGN, 0x8000\033[0m"
self.assertEqual(sin.encode("ascii", "test.uninamereplace"), sout)
sout = "\xac\033[1mETHIOPIC SYLLABLE SEE, EURO SIGN, 0x8000\033[0m"
self.assertEqual(sin.encode("latin-1", "test.uninamereplace"), sout)
sout = "\xac\033[1mETHIOPIC SYLLABLE SEE\033[0m\xa4\033[1m0x8000\033[0m"
self.assertEqual(sin.encode("iso-8859-15", "test.uninamereplace"), sout)
def test_backslashescape(self):
# Does the same as the "unicode-escape" encoding, but with different
# base encodings.
sin = u"a\xac\u1234\u20ac\u8000"
if sys.maxunicode > 0xffff:
sin += unichr(sys.maxunicode)
sout = "a\\xac\\u1234\\u20ac\\u8000"
if sys.maxunicode > 0xffff:
sout += "\\U%08x" % sys.maxunicode
self.assertEqual(sin.encode("ascii", "backslashreplace"), sout)
sout = "a\xac\\u1234\\u20ac\\u8000"
if sys.maxunicode > 0xffff:
sout += "\\U%08x" % sys.maxunicode
self.assertEqual(sin.encode("latin-1", "backslashreplace"), sout)
sout = "a\xac\\u1234\xa4\\u8000"
if sys.maxunicode > 0xffff:
sout += "\\U%08x" % sys.maxunicode
self.assertEqual(sin.encode("iso-8859-15", "backslashreplace"), sout)
def test_relaxedutf8(self):
# This is the test for a decoding callback handler,
# that relaxes the UTF-8 minimal encoding restriction.
# A null byte that is encoded as "\xc0\x80" will be
# decoded as a null byte. All other illegal sequences
# will be handled strictly.
def relaxedutf8(exc):
if not isinstance(exc, UnicodeDecodeError):
raise TypeError("don't know how to handle %r" % exc)
if exc.object[exc.start:exc.end].startswith("\xc0\x80"):
return (u"\x00", exc.start+2) # retry after two bytes
else:
raise exc
codecs.register_error(
"test.relaxedutf8", relaxedutf8)
sin = "a\x00b\xc0\x80c\xc3\xbc\xc0\x80\xc0\x80"
sout = u"a\x00b\x00c\xfc\x00\x00"
self.assertEqual(sin.decode("utf-8", "test.relaxedutf8"), sout)
sin = "\xc0\x80\xc0\x81"
self.assertRaises(UnicodeError, sin.decode, "utf-8", "test.relaxedutf8")
def test_charmapencode(self):
# For charmap encodings the replacement string will be
# mapped through the encoding again. This means, that
# to be able to use e.g. the "replace" handler, the
# charmap has to have a mapping for "?".
charmap = dict([ (ord(c), 2*c.upper()) for c in "abcdefgh"])
sin = u"abc"
sout = "AABBCC"
self.assertEquals(codecs.charmap_encode(sin, "strict", charmap)[0], sout)
sin = u"abcA"
self.assertRaises(UnicodeError, codecs.charmap_encode, sin, "strict", charmap)
charmap[ord("?")] = "XYZ"
sin = u"abcDEF"
sout = "AABBCCXYZXYZXYZ"
self.assertEquals(codecs.charmap_encode(sin, "replace", charmap)[0], sout)
charmap[ord("?")] = u"XYZ"
self.assertRaises(TypeError, codecs.charmap_encode, sin, "replace", charmap)
charmap[ord("?")] = u"XYZ"
self.assertRaises(TypeError, codecs.charmap_encode, sin, "replace", charmap)
def test_callbacks(self):
def handler1(exc):
if not isinstance(exc, UnicodeEncodeError) \
and not isinstance(exc, UnicodeDecodeError):
raise TypeError("don't know how to handle %r" % exc)
l = [u"<%d>" % ord(exc.object[pos]) for pos in xrange(exc.start, exc.end)]
return (u"[%s]" % u"".join(l), exc.end)
codecs.register_error("test.handler1", handler1)
def handler2(exc):
if not isinstance(exc, UnicodeDecodeError):
raise TypeError("don't know how to handle %r" % exc)
l = [u"<%d>" % ord(exc.object[pos]) for pos in xrange(exc.start, exc.end)]
return (u"[%s]" % u"".join(l), exc.end+1) # skip one character
codecs.register_error("test.handler2", handler2)
s = "\x00\x81\x7f\x80\xff"
self.assertEqual(
s.decode("ascii", "test.handler1"),
u"\x00[<129>]\x7f[<128>][<255>]"
)
self.assertEqual(
s.decode("ascii", "test.handler2"),
u"\x00[<129>][<128>]"
)
self.assertEqual(
"\\u3042\u3xxx".decode("unicode-escape", "test.handler1"),
u"\u3042[<92><117><51><120>]xx"
)
self.assertEqual(
"\\u3042\u3xx".decode("unicode-escape", "test.handler1"),
u"\u3042[<92><117><51><120><120>]"
)
self.assertEqual(
codecs.charmap_decode("abc", "test.handler1", {ord("a"): u"z"})[0],
u"z[<98>][<99>]"
)
self.assertEqual(
u"g\xfc\xdfrk".encode("ascii", "test.handler1"),
u"g[<252><223>]rk"
)
self.assertEqual(
u"g\xfc\xdf".encode("ascii", "test.handler1"),
u"g[<252><223>]"
)
def test_longstrings(self):
# test long strings to check for memory overflow problems
errors = [ "strict", "ignore", "replace", "xmlcharrefreplace", "backslashreplace"]
# register the handlers under different names,
# to prevent the codec from recognizing the name
for err in errors:
codecs.register_error("test." + err, codecs.lookup_error(err))
l = 1000
errors += [ "test." + err for err in errors ]
for uni in [ s*l for s in (u"x", u"\u3042", u"a\xe4") ]:
for enc in ("ascii", "latin-1", "iso-8859-1", "iso-8859-15", "utf-8", "utf-7", "utf-16"):
for err in errors:
try:
uni.encode(enc, err)
except UnicodeError:
pass
def check_exceptionobjectargs(self, exctype, args, msg):
# Test UnicodeError subclasses: construction, attribute assignment and __str__ conversion
# check with one missing argument
self.assertRaises(TypeError, exctype, *args[:-1])
# check with one missing argument
self.assertRaises(TypeError, exctype, *(args + ["too much"]))
# check with one argument of the wrong type
wrongargs = [ "spam", u"eggs", 42, 1.0, None ]
for i in xrange(len(args)):
for wrongarg in wrongargs:
if type(wrongarg) is type(args[i]):
continue
# build argument array
callargs = []
for j in xrange(len(args)):
if i==j:
callargs.append(wrongarg)
else:
callargs.append(args[i])
self.assertRaises(TypeError, exctype, *callargs)
exc = exctype(*args)
self.assertEquals(str(exc), msg)
def test_unicodeencodeerror(self):
self.check_exceptionobjectargs(
UnicodeEncodeError,
["ascii", u"g\xfcrk", 1, 2, "ouch"],
"'ascii' codec can't encode character '\ufc' in position 1: ouch"
)
self.check_exceptionobjectargs(
UnicodeEncodeError,
["ascii", u"g\xfcrk", 1, 4, "ouch"],
"'ascii' codec can't encode characters in position 1-3: ouch"
)
self.check_exceptionobjectargs(
UnicodeEncodeError,
["ascii", u"\xfcx", 0, 1, "ouch"],
"'ascii' codec can't encode character '\ufc' in position 0: ouch"
)
def test_unicodedecodeerror(self):
self.check_exceptionobjectargs(
UnicodeDecodeError,
["ascii", "g\xfcrk", 1, 2, "ouch"],
"'ascii' codec can't decode byte 0xfc in position 1: ouch"
)
self.check_exceptionobjectargs(
UnicodeDecodeError,
["ascii", "g\xfcrk", 1, 3, "ouch"],
"'ascii' codec can't decode bytes in position 1-2: ouch"
)
def test_unicodetranslateerror(self):
self.check_exceptionobjectargs(
UnicodeTranslateError,
[u"g\xfcrk", 1, 2, "ouch"],
"can't translate character '\\ufc' in position 1: ouch"
)
self.check_exceptionobjectargs(
UnicodeTranslateError,
[u"g\xfcrk", 1, 3, "ouch"],
"can't translate characters in position 1-2: ouch"
)
def test_badandgoodstrictexceptions(self):
self.assertRaises(
TypeError,
codecs.strict_errors,
42
)
self.assertRaises(
Exception,
codecs.strict_errors,
Exception("ouch")
)
self.assertRaises(
UnicodeEncodeError,
codecs.strict_errors,
UnicodeEncodeError("ascii", u"\u3042", 0, 1, "ouch")
)
def test_badandgoodignoreexceptions(self):
self.assertRaises(
TypeError,
codecs.ignore_errors,
42
)
self.assertRaises(
TypeError,
codecs.ignore_errors,
UnicodeError("ouch")
)
self.assertEquals(
codecs.ignore_errors(UnicodeEncodeError("ascii", u"\u3042", 0, 1, "ouch")),
(u"", 1)
)
self.assertEquals(
codecs.ignore_errors(UnicodeDecodeError("ascii", "\xff", 0, 1, "ouch")),
(u"", 1)
)
self.assertEquals(
codecs.ignore_errors(UnicodeTranslateError(u"\u3042", 0, 1, "ouch")),
(u"", 1)
)
def test_badandgoodreplaceexceptions(self):
self.assertRaises(
TypeError,
codecs.replace_errors,
42
)
self.assertRaises(
TypeError,
codecs.replace_errors,
UnicodeError("ouch")
)
self.assertEquals(
codecs.replace_errors(UnicodeEncodeError("ascii", u"\u3042", 0, 1, "ouch")),
(u"?", 1)
)
self.assertEquals(
codecs.replace_errors(UnicodeDecodeError("ascii", "\xff", 0, 1, "ouch")),
(u"\ufffd", 1)
)
self.assertEquals(
codecs.replace_errors(UnicodeTranslateError(u"\u3042", 0, 1, "ouch")),
(u"\ufffd", 1)
)
def test_badandgoodxmlcharrefreplaceexceptions(self):
self.assertRaises(
TypeError,
codecs.xmlcharrefreplace_errors,
42
)
self.assertRaises(
TypeError,
codecs.xmlcharrefreplace_errors,
UnicodeError("ouch")
)
self.assertEquals(
codecs.xmlcharrefreplace_errors(UnicodeEncodeError("ascii", u"\u3042", 0, 1, "ouch")),
(u"&#%d;" % 0x3042, 1)
)
self.assertRaises(
TypeError,
codecs.xmlcharrefreplace_errors,
UnicodeError("ouch")
)
self.assertRaises(
TypeError,
codecs.xmlcharrefreplace_errors,
UnicodeDecodeError("ascii", "\xff", 0, 1, "ouch")
)
self.assertRaises(
TypeError,
codecs.xmlcharrefreplace_errors,
UnicodeTranslateError(u"\u3042", 0, 1, "ouch")
)
def test_badandgoodbackslashreplaceexceptions(self):
self.assertRaises(
TypeError,
codecs.backslashreplace_errors,
42
)
self.assertRaises(
TypeError,
codecs.backslashreplace_errors,
UnicodeError("ouch")
)
self.assertEquals(
codecs.backslashreplace_errors(UnicodeEncodeError("ascii", u"\u3042", 0, 1, "ouch")),
(u"\\u3042", 1)
)
self.assertEquals(
codecs.backslashreplace_errors(UnicodeEncodeError("ascii", u"\x00", 0, 1, "ouch")),
(u"\\x00", 1)
)
self.assertEquals(
codecs.backslashreplace_errors(UnicodeEncodeError("ascii", u"\xff", 0, 1, "ouch")),
(u"\\xff", 1)
)
self.assertEquals(
codecs.backslashreplace_errors(UnicodeEncodeError("ascii", u"\u0100", 0, 1, "ouch")),
(u"\\u0100", 1)
)
self.assertEquals(
codecs.backslashreplace_errors(UnicodeEncodeError("ascii", u"\uffff", 0, 1, "ouch")),
(u"\\uffff", 1)
)
if sys.maxunicode>0xffff:
self.assertEquals(
codecs.backslashreplace_errors(UnicodeEncodeError("ascii", u"\U00010000", 0, 1, "ouch")),
(u"\\U00010000", 1)
)
self.assertEquals(
codecs.backslashreplace_errors(UnicodeEncodeError("ascii", u"\U0010ffff", 0, 1, "ouch")),
(u"\\U0010ffff", 1)
)
self.assertRaises(
TypeError,
codecs.backslashreplace_errors,
UnicodeError("ouch")
)
self.assertRaises(
TypeError,
codecs.backslashreplace_errors,
UnicodeDecodeError("ascii", "\xff", 0, 1, "ouch")
)
self.assertRaises(
TypeError,
codecs.backslashreplace_errors,
UnicodeTranslateError(u"\u3042", 0, 1, "ouch")
)
def test_badhandlerresults(self):
results = ( 42, u"foo", (1,2,3), (u"foo", 1, 3), (u"foo", None), (u"foo",), ("foo", 1, 3), ("foo", None), ("foo",) )
encs = ("ascii", "latin-1", "iso-8859-1", "iso-8859-15")
for res in results:
codecs.register_error("test.badhandler", lambda: res)
for enc in encs:
self.assertRaises(
TypeError,
u"\u3042".encode,
enc,
"test.badhandler"
)
for (enc, bytes) in (
("ascii", "\xff"),
("utf-8", "\xff"),
("utf-7", "+x-")
):
self.assertRaises(
TypeError,
bytes.decode,
enc,
"test.badhandler"
)
def test_lookup(self):
self.assertEquals(codecs.strict_errors, codecs.lookup_error("strict"))
self.assertEquals(codecs.ignore_errors, codecs.lookup_error("ignore"))
self.assertEquals(codecs.strict_errors, codecs.lookup_error("strict"))
self.assertEquals(
codecs.xmlcharrefreplace_errors,
codecs.lookup_error("xmlcharrefreplace")
)
self.assertEquals(
codecs.backslashreplace_errors,
codecs.lookup_error("backslashreplace")
)
def test_main():
suite = unittest.TestSuite()
suite.addTest(unittest.makeSuite(CodecCallbackTest))
test.test_support.run_suite(suite)
if __name__ == "__main__":
test_main()