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cpython/Lib/test/test_codecs.py

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import codecs
import contextlib
import io
import locale
import sys
import unittest
import encodings
from unittest import mock
from test import support
try:
import _testcapi
except ImportError:
_testcapi = None
try:
import ctypes
except ImportError:
ctypes = None
SIZEOF_WCHAR_T = -1
else:
SIZEOF_WCHAR_T = ctypes.sizeof(ctypes.c_wchar)
def coding_checker(self, coder):
def check(input, expect):
self.assertEqual(coder(input), (expect, len(input)))
return check
# On small versions of Windows like Windows IoT or Windows Nano Server not all codepages are present
def is_code_page_present(cp):
from ctypes import POINTER, WINFUNCTYPE, WinDLL
from ctypes.wintypes import BOOL, UINT, BYTE, WCHAR, UINT, DWORD
MAX_LEADBYTES = 12 # 5 ranges, 2 bytes ea., 0 term.
MAX_DEFAULTCHAR = 2 # single or double byte
MAX_PATH = 260
class CPINFOEXW(ctypes.Structure):
_fields_ = [("MaxCharSize", UINT),
("DefaultChar", BYTE*MAX_DEFAULTCHAR),
("LeadByte", BYTE*MAX_LEADBYTES),
("UnicodeDefaultChar", WCHAR),
("CodePage", UINT),
("CodePageName", WCHAR*MAX_PATH)]
prototype = WINFUNCTYPE(BOOL, UINT, DWORD, POINTER(CPINFOEXW))
GetCPInfoEx = prototype(("GetCPInfoExW", WinDLL("kernel32")))
info = CPINFOEXW()
return GetCPInfoEx(cp, 0, info)
class Queue(object):
"""
queue: write bytes at one end, read bytes from the other end
"""
def __init__(self, buffer):
self._buffer = buffer
def write(self, chars):
self._buffer += chars
def read(self, size=-1):
if size<0:
s = self._buffer
self._buffer = self._buffer[:0] # make empty
return s
else:
s = self._buffer[:size]
self._buffer = self._buffer[size:]
return s
class MixInCheckStateHandling:
def check_state_handling_decode(self, encoding, u, s):
for i in range(len(s)+1):
d = codecs.getincrementaldecoder(encoding)()
part1 = d.decode(s[:i])
state = d.getstate()
self.assertIsInstance(state[1], int)
# Check that the condition stated in the documentation for
# IncrementalDecoder.getstate() holds
if not state[1]:
# reset decoder to the default state without anything buffered
d.setstate((state[0][:0], 0))
# Feeding the previous input may not produce any output
self.assertTrue(not d.decode(state[0]))
# The decoder must return to the same state
self.assertEqual(state, d.getstate())
# Create a new decoder and set it to the state
# we extracted from the old one
d = codecs.getincrementaldecoder(encoding)()
d.setstate(state)
part2 = d.decode(s[i:], True)
self.assertEqual(u, part1+part2)
def check_state_handling_encode(self, encoding, u, s):
for i in range(len(u)+1):
d = codecs.getincrementalencoder(encoding)()
part1 = d.encode(u[:i])
state = d.getstate()
d = codecs.getincrementalencoder(encoding)()
d.setstate(state)
part2 = d.encode(u[i:], True)
self.assertEqual(s, part1+part2)
class ReadTest(MixInCheckStateHandling):
def check_partial(self, input, partialresults):
# get a StreamReader for the encoding and feed the bytestring version
# of input to the reader byte by byte. Read everything available from
# the StreamReader and check that the results equal the appropriate
# entries from partialresults.
q = Queue(b"")
r = codecs.getreader(self.encoding)(q)
result = ""
for (c, partialresult) in zip(input.encode(self.encoding), partialresults):
q.write(bytes([c]))
result += r.read()
self.assertEqual(result, partialresult)
# check that there's nothing left in the buffers
self.assertEqual(r.read(), "")
self.assertEqual(r.bytebuffer, b"")
# do the check again, this time using an incremental decoder
d = codecs.getincrementaldecoder(self.encoding)()
result = ""
for (c, partialresult) in zip(input.encode(self.encoding), partialresults):
result += d.decode(bytes([c]))
self.assertEqual(result, partialresult)
# check that there's nothing left in the buffers
self.assertEqual(d.decode(b"", True), "")
self.assertEqual(d.buffer, b"")
# Check whether the reset method works properly
d.reset()
result = ""
for (c, partialresult) in zip(input.encode(self.encoding), partialresults):
result += d.decode(bytes([c]))
self.assertEqual(result, partialresult)
# check that there's nothing left in the buffers
self.assertEqual(d.decode(b"", True), "")
self.assertEqual(d.buffer, b"")
# check iterdecode()
encoded = input.encode(self.encoding)
self.assertEqual(
input,
"".join(codecs.iterdecode([bytes([c]) for c in encoded], self.encoding))
)
def test_readline(self):
def getreader(input):
stream = io.BytesIO(input.encode(self.encoding))
return codecs.getreader(self.encoding)(stream)
def readalllines(input, keepends=True, size=None):
reader = getreader(input)
lines = []
while True:
line = reader.readline(size=size, keepends=keepends)
if not line:
break
lines.append(line)
return "|".join(lines)
s = "foo\nbar\r\nbaz\rspam\u2028eggs"
sexpected = "foo\n|bar\r\n|baz\r|spam\u2028|eggs"
sexpectednoends = "foo|bar|baz|spam|eggs"
self.assertEqual(readalllines(s, True), sexpected)
self.assertEqual(readalllines(s, False), sexpectednoends)
self.assertEqual(readalllines(s, True, 10), sexpected)
self.assertEqual(readalllines(s, False, 10), sexpectednoends)
lineends = ("\n", "\r\n", "\r", "\u2028")
# Test long lines (multiple calls to read() in readline())
vw = []
vwo = []
for (i, lineend) in enumerate(lineends):
vw.append((i*200+200)*"\u3042" + lineend)
vwo.append((i*200+200)*"\u3042")
self.assertEqual(readalllines("".join(vw), True), "|".join(vw))
self.assertEqual(readalllines("".join(vw), False), "|".join(vwo))
# Test lines where the first read might end with \r, so the
# reader has to look ahead whether this is a lone \r or a \r\n
for size in range(80):
for lineend in lineends:
s = 10*(size*"a" + lineend + "xxx\n")
reader = getreader(s)
for i in range(10):
self.assertEqual(
reader.readline(keepends=True),
size*"a" + lineend,
)
self.assertEqual(
reader.readline(keepends=True),
"xxx\n",
)
reader = getreader(s)
for i in range(10):
self.assertEqual(
reader.readline(keepends=False),
size*"a",
)
self.assertEqual(
reader.readline(keepends=False),
"xxx",
)
def test_mixed_readline_and_read(self):
lines = ["Humpty Dumpty sat on a wall,\n",
"Humpty Dumpty had a great fall.\r\n",
"All the king's horses and all the king's men\r",
"Couldn't put Humpty together again."]
data = ''.join(lines)
def getreader():
stream = io.BytesIO(data.encode(self.encoding))
return codecs.getreader(self.encoding)(stream)
# Issue #8260: Test readline() followed by read()
f = getreader()
self.assertEqual(f.readline(), lines[0])
self.assertEqual(f.read(), ''.join(lines[1:]))
self.assertEqual(f.read(), '')
# Issue #32110: Test readline() followed by read(n)
f = getreader()
self.assertEqual(f.readline(), lines[0])
self.assertEqual(f.read(1), lines[1][0])
self.assertEqual(f.read(0), '')
self.assertEqual(f.read(100), data[len(lines[0]) + 1:][:100])
# Issue #16636: Test readline() followed by readlines()
f = getreader()
self.assertEqual(f.readline(), lines[0])
self.assertEqual(f.readlines(), lines[1:])
self.assertEqual(f.read(), '')
# Test read(n) followed by read()
f = getreader()
self.assertEqual(f.read(size=40, chars=5), data[:5])
self.assertEqual(f.read(), data[5:])
self.assertEqual(f.read(), '')
# Issue #32110: Test read(n) followed by read(n)
f = getreader()
self.assertEqual(f.read(size=40, chars=5), data[:5])
self.assertEqual(f.read(1), data[5])
self.assertEqual(f.read(0), '')
self.assertEqual(f.read(100), data[6:106])
# Issue #12446: Test read(n) followed by readlines()
f = getreader()
self.assertEqual(f.read(size=40, chars=5), data[:5])
self.assertEqual(f.readlines(), [lines[0][5:]] + lines[1:])
self.assertEqual(f.read(), '')
def test_bug1175396(self):
s = [
'<%!--===================================================\r\n',
' BLOG index page: show recent articles,\r\n',
' today\'s articles, or articles of a specific date.\r\n',
'========================================================--%>\r\n',
'<%@inputencoding="ISO-8859-1"%>\r\n',
'<%@pagetemplate=TEMPLATE.y%>\r\n',
'<%@import=import frog.util, frog%>\r\n',
'<%@import=import frog.objects%>\r\n',
'<%@import=from frog.storageerrors import StorageError%>\r\n',
'<%\r\n',
'\r\n',
'import logging\r\n',
'log=logging.getLogger("Snakelets.logger")\r\n',
'\r\n',
'\r\n',
'user=self.SessionCtx.user\r\n',
'storageEngine=self.SessionCtx.storageEngine\r\n',
'\r\n',
'\r\n',
'def readArticlesFromDate(date, count=None):\r\n',
' entryids=storageEngine.listBlogEntries(date)\r\n',
' entryids.reverse() # descending\r\n',
' if count:\r\n',
' entryids=entryids[:count]\r\n',
' try:\r\n',
' return [ frog.objects.BlogEntry.load(storageEngine, date, Id) for Id in entryids ]\r\n',
' except StorageError,x:\r\n',
' log.error("Error loading articles: "+str(x))\r\n',
' self.abort("cannot load articles")\r\n',
'\r\n',
'showdate=None\r\n',
'\r\n',
'arg=self.Request.getArg()\r\n',
'if arg=="today":\r\n',
' #-------------------- TODAY\'S ARTICLES\r\n',
' self.write("<h2>Today\'s articles</h2>")\r\n',
' showdate = frog.util.isodatestr() \r\n',
' entries = readArticlesFromDate(showdate)\r\n',
'elif arg=="active":\r\n',
' #-------------------- ACTIVE ARTICLES redirect\r\n',
' self.Yredirect("active.y")\r\n',
'elif arg=="login":\r\n',
' #-------------------- LOGIN PAGE redirect\r\n',
' self.Yredirect("login.y")\r\n',
'elif arg=="date":\r\n',
' #-------------------- ARTICLES OF A SPECIFIC DATE\r\n',
' showdate = self.Request.getParameter("date")\r\n',
' self.write("<h2>Articles written on %s</h2>"% frog.util.mediumdatestr(showdate))\r\n',
' entries = readArticlesFromDate(showdate)\r\n',
'else:\r\n',
' #-------------------- RECENT ARTICLES\r\n',
' self.write("<h2>Recent articles</h2>")\r\n',
' dates=storageEngine.listBlogEntryDates()\r\n',
' if dates:\r\n',
' entries=[]\r\n',
' SHOWAMOUNT=10\r\n',
' for showdate in dates:\r\n',
' entries.extend( readArticlesFromDate(showdate, SHOWAMOUNT-len(entries)) )\r\n',
' if len(entries)>=SHOWAMOUNT:\r\n',
' break\r\n',
' \r\n',
]
stream = io.BytesIO("".join(s).encode(self.encoding))
reader = codecs.getreader(self.encoding)(stream)
for (i, line) in enumerate(reader):
self.assertEqual(line, s[i])
def test_readlinequeue(self):
q = Queue(b"")
writer = codecs.getwriter(self.encoding)(q)
reader = codecs.getreader(self.encoding)(q)
# No lineends
writer.write("foo\r")
self.assertEqual(reader.readline(keepends=False), "foo")
writer.write("\nbar\r")
self.assertEqual(reader.readline(keepends=False), "")
self.assertEqual(reader.readline(keepends=False), "bar")
writer.write("baz")
self.assertEqual(reader.readline(keepends=False), "baz")
self.assertEqual(reader.readline(keepends=False), "")
# Lineends
writer.write("foo\r")
self.assertEqual(reader.readline(keepends=True), "foo\r")
writer.write("\nbar\r")
self.assertEqual(reader.readline(keepends=True), "\n")
self.assertEqual(reader.readline(keepends=True), "bar\r")
writer.write("baz")
self.assertEqual(reader.readline(keepends=True), "baz")
self.assertEqual(reader.readline(keepends=True), "")
writer.write("foo\r\n")
self.assertEqual(reader.readline(keepends=True), "foo\r\n")
def test_bug1098990_a(self):
s1 = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy\r\n"
s2 = "offending line: ladfj askldfj klasdj fskla dfzaskdj fasklfj laskd fjasklfzzzzaa%whereisthis!!!\r\n"
s3 = "next line.\r\n"
s = (s1+s2+s3).encode(self.encoding)
stream = io.BytesIO(s)
reader = codecs.getreader(self.encoding)(stream)
self.assertEqual(reader.readline(), s1)
self.assertEqual(reader.readline(), s2)
self.assertEqual(reader.readline(), s3)
self.assertEqual(reader.readline(), "")
def test_bug1098990_b(self):
s1 = "aaaaaaaaaaaaaaaaaaaaaaaa\r\n"
s2 = "bbbbbbbbbbbbbbbbbbbbbbbb\r\n"
s3 = "stillokay:bbbbxx\r\n"
s4 = "broken!!!!badbad\r\n"
s5 = "againokay.\r\n"
s = (s1+s2+s3+s4+s5).encode(self.encoding)
stream = io.BytesIO(s)
reader = codecs.getreader(self.encoding)(stream)
self.assertEqual(reader.readline(), s1)
self.assertEqual(reader.readline(), s2)
self.assertEqual(reader.readline(), s3)
self.assertEqual(reader.readline(), s4)
self.assertEqual(reader.readline(), s5)
self.assertEqual(reader.readline(), "")
ill_formed_sequence_replace = "\ufffd"
def test_lone_surrogates(self):
self.assertRaises(UnicodeEncodeError, "\ud800".encode, self.encoding)
self.assertEqual("[\uDC80]".encode(self.encoding, "backslashreplace"),
"[\\udc80]".encode(self.encoding))
self.assertEqual("[\uDC80]".encode(self.encoding, "namereplace"),
"[\\udc80]".encode(self.encoding))
self.assertEqual("[\uDC80]".encode(self.encoding, "xmlcharrefreplace"),
"[&#56448;]".encode(self.encoding))
self.assertEqual("[\uDC80]".encode(self.encoding, "ignore"),
"[]".encode(self.encoding))
self.assertEqual("[\uDC80]".encode(self.encoding, "replace"),
"[?]".encode(self.encoding))
# sequential surrogate characters
self.assertEqual("[\uD800\uDC80]".encode(self.encoding, "ignore"),
"[]".encode(self.encoding))
self.assertEqual("[\uD800\uDC80]".encode(self.encoding, "replace"),
"[??]".encode(self.encoding))
bom = "".encode(self.encoding)
for before, after in [("\U00010fff", "A"), ("[", "]"),
("A", "\U00010fff")]:
before_sequence = before.encode(self.encoding)[len(bom):]
after_sequence = after.encode(self.encoding)[len(bom):]
test_string = before + "\uDC80" + after
test_sequence = (bom + before_sequence +
self.ill_formed_sequence + after_sequence)
self.assertRaises(UnicodeDecodeError, test_sequence.decode,
self.encoding)
self.assertEqual(test_string.encode(self.encoding,
"surrogatepass"),
test_sequence)
self.assertEqual(test_sequence.decode(self.encoding,
"surrogatepass"),
test_string)
self.assertEqual(test_sequence.decode(self.encoding, "ignore"),
before + after)
self.assertEqual(test_sequence.decode(self.encoding, "replace"),
before + self.ill_formed_sequence_replace + after)
backslashreplace = ''.join('\\x%02x' % b
for b in self.ill_formed_sequence)
self.assertEqual(test_sequence.decode(self.encoding, "backslashreplace"),
before + backslashreplace + after)
def test_incremental_surrogatepass(self):
# Test incremental decoder for surrogatepass handler:
# see issue #24214
# High surrogate
data = '\uD901'.encode(self.encoding, 'surrogatepass')
for i in range(1, len(data)):
dec = codecs.getincrementaldecoder(self.encoding)('surrogatepass')
self.assertEqual(dec.decode(data[:i]), '')
self.assertEqual(dec.decode(data[i:], True), '\uD901')
# Low surrogate
data = '\uDC02'.encode(self.encoding, 'surrogatepass')
for i in range(1, len(data)):
dec = codecs.getincrementaldecoder(self.encoding)('surrogatepass')
self.assertEqual(dec.decode(data[:i]), '')
self.assertEqual(dec.decode(data[i:]), '\uDC02')
class UTF32Test(ReadTest, unittest.TestCase):
encoding = "utf-32"
if sys.byteorder == 'little':
ill_formed_sequence = b"\x80\xdc\x00\x00"
else:
ill_formed_sequence = b"\x00\x00\xdc\x80"
spamle = (b'\xff\xfe\x00\x00'
b's\x00\x00\x00p\x00\x00\x00a\x00\x00\x00m\x00\x00\x00'
b's\x00\x00\x00p\x00\x00\x00a\x00\x00\x00m\x00\x00\x00')
spambe = (b'\x00\x00\xfe\xff'
b'\x00\x00\x00s\x00\x00\x00p\x00\x00\x00a\x00\x00\x00m'
b'\x00\x00\x00s\x00\x00\x00p\x00\x00\x00a\x00\x00\x00m')
def test_only_one_bom(self):
_,_,reader,writer = codecs.lookup(self.encoding)
# encode some stream
s = io.BytesIO()
f = writer(s)
f.write("spam")
f.write("spam")
d = s.getvalue()
# check whether there is exactly one BOM in it
self.assertTrue(d == self.spamle or d == self.spambe)
# try to read it back
s = io.BytesIO(d)
f = reader(s)
self.assertEqual(f.read(), "spamspam")
def test_badbom(self):
s = io.BytesIO(4*b"\xff")
f = codecs.getreader(self.encoding)(s)
self.assertRaises(UnicodeError, f.read)
s = io.BytesIO(8*b"\xff")
f = codecs.getreader(self.encoding)(s)
self.assertRaises(UnicodeError, f.read)
def test_partial(self):
self.check_partial(
"\x00\xff\u0100\uffff\U00010000",
[
"", # first byte of BOM read
"", # second byte of BOM read
"", # third byte of BOM read
"", # fourth byte of BOM read => byteorder known
"",
"",
"",
"\x00",
"\x00",
"\x00",
"\x00",
"\x00\xff",
"\x00\xff",
"\x00\xff",
"\x00\xff",
"\x00\xff\u0100",
"\x00\xff\u0100",
"\x00\xff\u0100",
"\x00\xff\u0100",
"\x00\xff\u0100\uffff",
"\x00\xff\u0100\uffff",
"\x00\xff\u0100\uffff",
"\x00\xff\u0100\uffff",
"\x00\xff\u0100\uffff\U00010000",
]
)
def test_handlers(self):
self.assertEqual(('\ufffd', 1),
codecs.utf_32_decode(b'\x01', 'replace', True))
self.assertEqual(('', 1),
codecs.utf_32_decode(b'\x01', 'ignore', True))
def test_errors(self):
self.assertRaises(UnicodeDecodeError, codecs.utf_32_decode,
b"\xff", "strict", True)
def test_decoder_state(self):
self.check_state_handling_decode(self.encoding,
"spamspam", self.spamle)
self.check_state_handling_decode(self.encoding,
"spamspam", self.spambe)
def test_issue8941(self):
# Issue #8941: insufficient result allocation when decoding into
# surrogate pairs on UCS-2 builds.
encoded_le = b'\xff\xfe\x00\x00' + b'\x00\x00\x01\x00' * 1024
self.assertEqual('\U00010000' * 1024,
codecs.utf_32_decode(encoded_le)[0])
encoded_be = b'\x00\x00\xfe\xff' + b'\x00\x01\x00\x00' * 1024
self.assertEqual('\U00010000' * 1024,
codecs.utf_32_decode(encoded_be)[0])
class UTF32LETest(ReadTest, unittest.TestCase):
encoding = "utf-32-le"
ill_formed_sequence = b"\x80\xdc\x00\x00"
def test_partial(self):
self.check_partial(
"\x00\xff\u0100\uffff\U00010000",
[
"",
"",
"",
"\x00",
"\x00",
"\x00",
"\x00",
"\x00\xff",
"\x00\xff",
"\x00\xff",
"\x00\xff",
"\x00\xff\u0100",
"\x00\xff\u0100",
"\x00\xff\u0100",
"\x00\xff\u0100",
"\x00\xff\u0100\uffff",
"\x00\xff\u0100\uffff",
"\x00\xff\u0100\uffff",
"\x00\xff\u0100\uffff",
"\x00\xff\u0100\uffff\U00010000",
]
)
def test_simple(self):
self.assertEqual("\U00010203".encode(self.encoding), b"\x03\x02\x01\x00")
def test_errors(self):
self.assertRaises(UnicodeDecodeError, codecs.utf_32_le_decode,
b"\xff", "strict", True)
def test_issue8941(self):
# Issue #8941: insufficient result allocation when decoding into
# surrogate pairs on UCS-2 builds.
encoded = b'\x00\x00\x01\x00' * 1024
self.assertEqual('\U00010000' * 1024,
codecs.utf_32_le_decode(encoded)[0])
class UTF32BETest(ReadTest, unittest.TestCase):
encoding = "utf-32-be"
ill_formed_sequence = b"\x00\x00\xdc\x80"
def test_partial(self):
self.check_partial(
"\x00\xff\u0100\uffff\U00010000",
[
"",
"",
"",
"\x00",
"\x00",
"\x00",
"\x00",
"\x00\xff",
"\x00\xff",
"\x00\xff",
"\x00\xff",
"\x00\xff\u0100",
"\x00\xff\u0100",
"\x00\xff\u0100",
"\x00\xff\u0100",
"\x00\xff\u0100\uffff",
"\x00\xff\u0100\uffff",
"\x00\xff\u0100\uffff",
"\x00\xff\u0100\uffff",
"\x00\xff\u0100\uffff\U00010000",
]
)
def test_simple(self):
self.assertEqual("\U00010203".encode(self.encoding), b"\x00\x01\x02\x03")
def test_errors(self):
self.assertRaises(UnicodeDecodeError, codecs.utf_32_be_decode,
b"\xff", "strict", True)
def test_issue8941(self):
# Issue #8941: insufficient result allocation when decoding into
# surrogate pairs on UCS-2 builds.
encoded = b'\x00\x01\x00\x00' * 1024
self.assertEqual('\U00010000' * 1024,
codecs.utf_32_be_decode(encoded)[0])
class UTF16Test(ReadTest, unittest.TestCase):
encoding = "utf-16"
if sys.byteorder == 'little':
ill_formed_sequence = b"\x80\xdc"
else:
ill_formed_sequence = b"\xdc\x80"
spamle = b'\xff\xfes\x00p\x00a\x00m\x00s\x00p\x00a\x00m\x00'
spambe = b'\xfe\xff\x00s\x00p\x00a\x00m\x00s\x00p\x00a\x00m'
def test_only_one_bom(self):
_,_,reader,writer = codecs.lookup(self.encoding)
# encode some stream
s = io.BytesIO()
f = writer(s)
f.write("spam")
f.write("spam")
d = s.getvalue()
# check whether there is exactly one BOM in it
self.assertTrue(d == self.spamle or d == self.spambe)
# try to read it back
s = io.BytesIO(d)
f = reader(s)
self.assertEqual(f.read(), "spamspam")
def test_badbom(self):
s = io.BytesIO(b"\xff\xff")
f = codecs.getreader(self.encoding)(s)
self.assertRaises(UnicodeError, f.read)
s = io.BytesIO(b"\xff\xff\xff\xff")
f = codecs.getreader(self.encoding)(s)
self.assertRaises(UnicodeError, f.read)
def test_partial(self):
self.check_partial(
"\x00\xff\u0100\uffff\U00010000",
[
"", # first byte of BOM read
"", # second byte of BOM read => byteorder known
"",
"\x00",
"\x00",
"\x00\xff",
"\x00\xff",
"\x00\xff\u0100",
"\x00\xff\u0100",
"\x00\xff\u0100\uffff",
"\x00\xff\u0100\uffff",
"\x00\xff\u0100\uffff",
"\x00\xff\u0100\uffff",
"\x00\xff\u0100\uffff\U00010000",
]
)
def test_handlers(self):
self.assertEqual(('\ufffd', 1),
codecs.utf_16_decode(b'\x01', 'replace', True))
self.assertEqual(('', 1),
codecs.utf_16_decode(b'\x01', 'ignore', True))
def test_errors(self):
self.assertRaises(UnicodeDecodeError, codecs.utf_16_decode,
b"\xff", "strict", True)
def test_decoder_state(self):
self.check_state_handling_decode(self.encoding,
"spamspam", self.spamle)
self.check_state_handling_decode(self.encoding,
"spamspam", self.spambe)
def test_bug691291(self):
# Files are always opened in binary mode, even if no binary mode was
# specified. This means that no automatic conversion of '\n' is done
# on reading and writing.
s1 = 'Hello\r\nworld\r\n'
s = s1.encode(self.encoding)
self.addCleanup(support.unlink, support.TESTFN)
with open(support.TESTFN, 'wb') as fp:
fp.write(s)
with support.check_warnings(('', DeprecationWarning)):
reader = codecs.open(support.TESTFN, 'U', encoding=self.encoding)
with reader:
self.assertEqual(reader.read(), s1)
class UTF16LETest(ReadTest, unittest.TestCase):
encoding = "utf-16-le"
ill_formed_sequence = b"\x80\xdc"
def test_partial(self):
self.check_partial(
"\x00\xff\u0100\uffff\U00010000",
[
"",
"\x00",
"\x00",
"\x00\xff",
"\x00\xff",
"\x00\xff\u0100",
"\x00\xff\u0100",
"\x00\xff\u0100\uffff",
"\x00\xff\u0100\uffff",
"\x00\xff\u0100\uffff",
"\x00\xff\u0100\uffff",
"\x00\xff\u0100\uffff\U00010000",
]
)
def test_errors(self):
tests = [
(b'\xff', '\ufffd'),
(b'A\x00Z', 'A\ufffd'),
(b'A\x00B\x00C\x00D\x00Z', 'ABCD\ufffd'),
(b'\x00\xd8', '\ufffd'),
(b'\x00\xd8A', '\ufffd'),
(b'\x00\xd8A\x00', '\ufffdA'),
(b'\x00\xdcA\x00', '\ufffdA'),
]
for raw, expected in tests:
self.assertRaises(UnicodeDecodeError, codecs.utf_16_le_decode,
raw, 'strict', True)
self.assertEqual(raw.decode('utf-16le', 'replace'), expected)
def test_nonbmp(self):
self.assertEqual("\U00010203".encode(self.encoding),
b'\x00\xd8\x03\xde')
self.assertEqual(b'\x00\xd8\x03\xde'.decode(self.encoding),
"\U00010203")
class UTF16BETest(ReadTest, unittest.TestCase):
encoding = "utf-16-be"
ill_formed_sequence = b"\xdc\x80"
def test_partial(self):
self.check_partial(
"\x00\xff\u0100\uffff\U00010000",
[
"",
"\x00",
"\x00",
"\x00\xff",
"\x00\xff",
"\x00\xff\u0100",
"\x00\xff\u0100",
"\x00\xff\u0100\uffff",
"\x00\xff\u0100\uffff",
"\x00\xff\u0100\uffff",
"\x00\xff\u0100\uffff",
"\x00\xff\u0100\uffff\U00010000",
]
)
def test_errors(self):
tests = [
(b'\xff', '\ufffd'),
(b'\x00A\xff', 'A\ufffd'),
(b'\x00A\x00B\x00C\x00DZ', 'ABCD\ufffd'),
(b'\xd8\x00', '\ufffd'),
(b'\xd8\x00\xdc', '\ufffd'),
(b'\xd8\x00\x00A', '\ufffdA'),
(b'\xdc\x00\x00A', '\ufffdA'),
]
for raw, expected in tests:
self.assertRaises(UnicodeDecodeError, codecs.utf_16_be_decode,
raw, 'strict', True)
self.assertEqual(raw.decode('utf-16be', 'replace'), expected)
def test_nonbmp(self):
self.assertEqual("\U00010203".encode(self.encoding),
b'\xd8\x00\xde\x03')
self.assertEqual(b'\xd8\x00\xde\x03'.decode(self.encoding),
"\U00010203")
class UTF8Test(ReadTest, unittest.TestCase):
encoding = "utf-8"
ill_formed_sequence = b"\xed\xb2\x80"
ill_formed_sequence_replace = "\ufffd" * 3
BOM = b''
def test_partial(self):
self.check_partial(
"\x00\xff\u07ff\u0800\uffff\U00010000",
[
"\x00",
"\x00",
"\x00\xff",
"\x00\xff",
"\x00\xff\u07ff",
"\x00\xff\u07ff",
"\x00\xff\u07ff",
"\x00\xff\u07ff\u0800",
"\x00\xff\u07ff\u0800",
"\x00\xff\u07ff\u0800",
"\x00\xff\u07ff\u0800\uffff",
"\x00\xff\u07ff\u0800\uffff",
"\x00\xff\u07ff\u0800\uffff",
"\x00\xff\u07ff\u0800\uffff",
"\x00\xff\u07ff\u0800\uffff\U00010000",
]
)
def test_decoder_state(self):
u = "\x00\x7f\x80\xff\u0100\u07ff\u0800\uffff\U0010ffff"
self.check_state_handling_decode(self.encoding,
u, u.encode(self.encoding))
def test_decode_error(self):
for data, error_handler, expected in (
(b'[\x80\xff]', 'ignore', '[]'),
(b'[\x80\xff]', 'replace', '[\ufffd\ufffd]'),
(b'[\x80\xff]', 'surrogateescape', '[\udc80\udcff]'),
(b'[\x80\xff]', 'backslashreplace', '[\\x80\\xff]'),
):
with self.subTest(data=data, error_handler=error_handler,
expected=expected):
self.assertEqual(data.decode(self.encoding, error_handler),
expected)
def test_lone_surrogates(self):
super().test_lone_surrogates()
# not sure if this is making sense for
# UTF-16 and UTF-32
self.assertEqual("[\uDC80]".encode(self.encoding, "surrogateescape"),
self.BOM + b'[\x80]')
with self.assertRaises(UnicodeEncodeError) as cm:
"[\uDC80\uD800\uDFFF]".encode(self.encoding, "surrogateescape")
exc = cm.exception
self.assertEqual(exc.object[exc.start:exc.end], '\uD800\uDFFF')
def test_surrogatepass_handler(self):
self.assertEqual("abc\ud800def".encode(self.encoding, "surrogatepass"),
self.BOM + b"abc\xed\xa0\x80def")
self.assertEqual("\U00010fff\uD800".encode(self.encoding, "surrogatepass"),
self.BOM + b"\xf0\x90\xbf\xbf\xed\xa0\x80")
self.assertEqual("[\uD800\uDC80]".encode(self.encoding, "surrogatepass"),
self.BOM + b'[\xed\xa0\x80\xed\xb2\x80]')
self.assertEqual(b"abc\xed\xa0\x80def".decode(self.encoding, "surrogatepass"),
"abc\ud800def")
self.assertEqual(b"\xf0\x90\xbf\xbf\xed\xa0\x80".decode(self.encoding, "surrogatepass"),
"\U00010fff\uD800")
self.assertTrue(codecs.lookup_error("surrogatepass"))
with self.assertRaises(UnicodeDecodeError):
b"abc\xed\xa0".decode(self.encoding, "surrogatepass")
with self.assertRaises(UnicodeDecodeError):
b"abc\xed\xa0z".decode(self.encoding, "surrogatepass")
def test_incremental_errors(self):
# Test that the incremental decoder can fail with final=False.
# See issue #24214
cases = [b'\x80', b'\xBF', b'\xC0', b'\xC1', b'\xF5', b'\xF6', b'\xFF']
for prefix in (b'\xC2', b'\xDF', b'\xE0', b'\xE0\xA0', b'\xEF',
b'\xEF\xBF', b'\xF0', b'\xF0\x90', b'\xF0\x90\x80',
b'\xF4', b'\xF4\x8F', b'\xF4\x8F\xBF'):
for suffix in b'\x7F', b'\xC0':
cases.append(prefix + suffix)
cases.extend((b'\xE0\x80', b'\xE0\x9F', b'\xED\xA0\x80',
b'\xED\xBF\xBF', b'\xF0\x80', b'\xF0\x8F', b'\xF4\x90'))
for data in cases:
with self.subTest(data=data):
dec = codecs.getincrementaldecoder(self.encoding)()
self.assertRaises(UnicodeDecodeError, dec.decode, data)
class UTF7Test(ReadTest, unittest.TestCase):
encoding = "utf-7"
def test_ascii(self):
# Set D (directly encoded characters)
set_d = ('ABCDEFGHIJKLMNOPQRSTUVWXYZ'
'abcdefghijklmnopqrstuvwxyz'
'0123456789'
'\'(),-./:?')
self.assertEqual(set_d.encode(self.encoding), set_d.encode('ascii'))
self.assertEqual(set_d.encode('ascii').decode(self.encoding), set_d)
# Set O (optional direct characters)
set_o = ' !"#$%&*;<=>@[]^_`{|}'
self.assertEqual(set_o.encode(self.encoding), set_o.encode('ascii'))
self.assertEqual(set_o.encode('ascii').decode(self.encoding), set_o)
# +
self.assertEqual('a+b'.encode(self.encoding), b'a+-b')
self.assertEqual(b'a+-b'.decode(self.encoding), 'a+b')
# White spaces
ws = ' \t\n\r'
self.assertEqual(ws.encode(self.encoding), ws.encode('ascii'))
self.assertEqual(ws.encode('ascii').decode(self.encoding), ws)
# Other ASCII characters
other_ascii = ''.join(sorted(set(bytes(range(0x80)).decode()) -
set(set_d + set_o + '+' + ws)))
self.assertEqual(other_ascii.encode(self.encoding),
b'+AAAAAQACAAMABAAFAAYABwAIAAsADAAOAA8AEAARABIAEwAU'
b'ABUAFgAXABgAGQAaABsAHAAdAB4AHwBcAH4Afw-')
def test_partial(self):
self.check_partial(
'a+-b\x00c\x80d\u0100e\U00010000f',
[
'a',
'a',
'a+',
'a+-',
'a+-b',
'a+-b',
'a+-b',
'a+-b',
'a+-b',
'a+-b\x00',
'a+-b\x00c',
'a+-b\x00c',
'a+-b\x00c',
'a+-b\x00c',
'a+-b\x00c',
'a+-b\x00c\x80',
'a+-b\x00c\x80d',
'a+-b\x00c\x80d',
'a+-b\x00c\x80d',
'a+-b\x00c\x80d',
'a+-b\x00c\x80d',
'a+-b\x00c\x80d\u0100',
'a+-b\x00c\x80d\u0100e',
'a+-b\x00c\x80d\u0100e',
'a+-b\x00c\x80d\u0100e',
'a+-b\x00c\x80d\u0100e',
'a+-b\x00c\x80d\u0100e',
'a+-b\x00c\x80d\u0100e',
'a+-b\x00c\x80d\u0100e',
'a+-b\x00c\x80d\u0100e',
'a+-b\x00c\x80d\u0100e\U00010000',
'a+-b\x00c\x80d\u0100e\U00010000f',
]
)
def test_errors(self):
tests = [
(b'\xffb', '\ufffdb'),
(b'a\xffb', 'a\ufffdb'),
(b'a\xff\xffb', 'a\ufffd\ufffdb'),
(b'a+IK', 'a\ufffd'),
(b'a+IK-b', 'a\ufffdb'),
(b'a+IK,b', 'a\ufffdb'),
(b'a+IKx', 'a\u20ac\ufffd'),
(b'a+IKx-b', 'a\u20ac\ufffdb'),
(b'a+IKwgr', 'a\u20ac\ufffd'),
(b'a+IKwgr-b', 'a\u20ac\ufffdb'),
(b'a+IKwgr,', 'a\u20ac\ufffd'),
(b'a+IKwgr,-b', 'a\u20ac\ufffd-b'),
(b'a+IKwgrB', 'a\u20ac\u20ac\ufffd'),
(b'a+IKwgrB-b', 'a\u20ac\u20ac\ufffdb'),
(b'a+/,+IKw-b', 'a\ufffd\u20acb'),
(b'a+//,+IKw-b', 'a\ufffd\u20acb'),
(b'a+///,+IKw-b', 'a\uffff\ufffd\u20acb'),
(b'a+////,+IKw-b', 'a\uffff\ufffd\u20acb'),
(b'a+IKw-b\xff', 'a\u20acb\ufffd'),
(b'a+IKw\xffb', 'a\u20ac\ufffdb'),
(b'a+@b', 'a\ufffdb'),
]
for raw, expected in tests:
with self.subTest(raw=raw):
self.assertRaises(UnicodeDecodeError, codecs.utf_7_decode,
raw, 'strict', True)
self.assertEqual(raw.decode('utf-7', 'replace'), expected)
def test_nonbmp(self):
self.assertEqual('\U000104A0'.encode(self.encoding), b'+2AHcoA-')
self.assertEqual('\ud801\udca0'.encode(self.encoding), b'+2AHcoA-')
self.assertEqual(b'+2AHcoA-'.decode(self.encoding), '\U000104A0')
self.assertEqual(b'+2AHcoA'.decode(self.encoding), '\U000104A0')
self.assertEqual('\u20ac\U000104A0'.encode(self.encoding), b'+IKzYAdyg-')
self.assertEqual(b'+IKzYAdyg-'.decode(self.encoding), '\u20ac\U000104A0')
self.assertEqual(b'+IKzYAdyg'.decode(self.encoding), '\u20ac\U000104A0')
self.assertEqual('\u20ac\u20ac\U000104A0'.encode(self.encoding),
b'+IKwgrNgB3KA-')
self.assertEqual(b'+IKwgrNgB3KA-'.decode(self.encoding),
'\u20ac\u20ac\U000104A0')
self.assertEqual(b'+IKwgrNgB3KA'.decode(self.encoding),
'\u20ac\u20ac\U000104A0')
def test_lone_surrogates(self):
tests = [
(b'a+2AE-b', 'a\ud801b'),
(b'a+2AE\xffb', 'a\ufffdb'),
(b'a+2AE', 'a\ufffd'),
(b'a+2AEA-b', 'a\ufffdb'),
(b'a+2AH-b', 'a\ufffdb'),
(b'a+IKzYAQ-b', 'a\u20ac\ud801b'),
(b'a+IKzYAQ\xffb', 'a\u20ac\ufffdb'),
(b'a+IKzYAQA-b', 'a\u20ac\ufffdb'),
(b'a+IKzYAd-b', 'a\u20ac\ufffdb'),
(b'a+IKwgrNgB-b', 'a\u20ac\u20ac\ud801b'),
(b'a+IKwgrNgB\xffb', 'a\u20ac\u20ac\ufffdb'),
(b'a+IKwgrNgB', 'a\u20ac\u20ac\ufffd'),
(b'a+IKwgrNgBA-b', 'a\u20ac\u20ac\ufffdb'),
]
for raw, expected in tests:
with self.subTest(raw=raw):
self.assertEqual(raw.decode('utf-7', 'replace'), expected)
class UTF16ExTest(unittest.TestCase):
def test_errors(self):
self.assertRaises(UnicodeDecodeError, codecs.utf_16_ex_decode, b"\xff", "strict", 0, True)
def test_bad_args(self):
self.assertRaises(TypeError, codecs.utf_16_ex_decode)
class ReadBufferTest(unittest.TestCase):
def test_array(self):
import array
self.assertEqual(
codecs.readbuffer_encode(array.array("b", b"spam")),
(b"spam", 4)
)
def test_empty(self):
self.assertEqual(codecs.readbuffer_encode(""), (b"", 0))
def test_bad_args(self):
self.assertRaises(TypeError, codecs.readbuffer_encode)
self.assertRaises(TypeError, codecs.readbuffer_encode, 42)
class UTF8SigTest(UTF8Test, unittest.TestCase):
encoding = "utf-8-sig"
BOM = codecs.BOM_UTF8
def test_partial(self):
self.check_partial(
"\ufeff\x00\xff\u07ff\u0800\uffff\U00010000",
[
"",
"",
"", # First BOM has been read and skipped
"",
"",
"\ufeff", # Second BOM has been read and emitted
"\ufeff\x00", # "\x00" read and emitted
"\ufeff\x00", # First byte of encoded "\xff" read
"\ufeff\x00\xff", # Second byte of encoded "\xff" read
"\ufeff\x00\xff", # First byte of encoded "\u07ff" read
"\ufeff\x00\xff\u07ff", # Second byte of encoded "\u07ff" read
"\ufeff\x00\xff\u07ff",
"\ufeff\x00\xff\u07ff",
"\ufeff\x00\xff\u07ff\u0800",
"\ufeff\x00\xff\u07ff\u0800",
"\ufeff\x00\xff\u07ff\u0800",
"\ufeff\x00\xff\u07ff\u0800\uffff",
"\ufeff\x00\xff\u07ff\u0800\uffff",
"\ufeff\x00\xff\u07ff\u0800\uffff",
"\ufeff\x00\xff\u07ff\u0800\uffff",
"\ufeff\x00\xff\u07ff\u0800\uffff\U00010000",
]
)
def test_bug1601501(self):
# SF bug #1601501: check that the codec works with a buffer
self.assertEqual(str(b"\xef\xbb\xbf", "utf-8-sig"), "")
def test_bom(self):
d = codecs.getincrementaldecoder("utf-8-sig")()
s = "spam"
self.assertEqual(d.decode(s.encode("utf-8-sig")), s)
def test_stream_bom(self):
unistring = "ABC\u00A1\u2200XYZ"
bytestring = codecs.BOM_UTF8 + b"ABC\xC2\xA1\xE2\x88\x80XYZ"
reader = codecs.getreader("utf-8-sig")
for sizehint in [None] + list(range(1, 11)) + \
[64, 128, 256, 512, 1024]:
istream = reader(io.BytesIO(bytestring))
ostream = io.StringIO()
while 1:
if sizehint is not None:
data = istream.read(sizehint)
else:
data = istream.read()
if not data:
break
ostream.write(data)
got = ostream.getvalue()
self.assertEqual(got, unistring)
def test_stream_bare(self):
unistring = "ABC\u00A1\u2200XYZ"
bytestring = b"ABC\xC2\xA1\xE2\x88\x80XYZ"
reader = codecs.getreader("utf-8-sig")
for sizehint in [None] + list(range(1, 11)) + \
[64, 128, 256, 512, 1024]:
istream = reader(io.BytesIO(bytestring))
ostream = io.StringIO()
while 1:
if sizehint is not None:
data = istream.read(sizehint)
else:
data = istream.read()
if not data:
break
ostream.write(data)
got = ostream.getvalue()
self.assertEqual(got, unistring)
class EscapeDecodeTest(unittest.TestCase):
def test_empty(self):
self.assertEqual(codecs.escape_decode(b""), (b"", 0))
self.assertEqual(codecs.escape_decode(bytearray()), (b"", 0))
def test_raw(self):
decode = codecs.escape_decode
for b in range(256):
b = bytes([b])
if b != b'\\':
self.assertEqual(decode(b + b'0'), (b + b'0', 2))
def test_escape(self):
decode = codecs.escape_decode
check = coding_checker(self, decode)
check(b"[\\\n]", b"[]")
check(br'[\"]', b'["]')
check(br"[\']", b"[']")
check(br"[\\]", b"[\\]")
check(br"[\a]", b"[\x07]")
check(br"[\b]", b"[\x08]")
check(br"[\t]", b"[\x09]")
check(br"[\n]", b"[\x0a]")
check(br"[\v]", b"[\x0b]")
check(br"[\f]", b"[\x0c]")
check(br"[\r]", b"[\x0d]")
check(br"[\7]", b"[\x07]")
check(br"[\78]", b"[\x078]")
check(br"[\41]", b"[!]")
check(br"[\418]", b"[!8]")
check(br"[\101]", b"[A]")
check(br"[\1010]", b"[A0]")
check(br"[\501]", b"[A]")
check(br"[\x41]", b"[A]")
check(br"[\x410]", b"[A0]")
for i in range(97, 123):
b = bytes([i])
if b not in b'abfnrtvx':
with self.assertWarns(DeprecationWarning):
check(b"\\" + b, b"\\" + b)
with self.assertWarns(DeprecationWarning):
check(b"\\" + b.upper(), b"\\" + b.upper())
with self.assertWarns(DeprecationWarning):
check(br"\8", b"\\8")
with self.assertWarns(DeprecationWarning):
check(br"\9", b"\\9")
with self.assertWarns(DeprecationWarning):
check(b"\\\xfa", b"\\\xfa")
def test_errors(self):
decode = codecs.escape_decode
self.assertRaises(ValueError, decode, br"\x")
self.assertRaises(ValueError, decode, br"[\x]")
self.assertEqual(decode(br"[\x]\x", "ignore"), (b"[]", 6))
self.assertEqual(decode(br"[\x]\x", "replace"), (b"[?]?", 6))
self.assertRaises(ValueError, decode, br"\x0")
self.assertRaises(ValueError, decode, br"[\x0]")
self.assertEqual(decode(br"[\x0]\x0", "ignore"), (b"[]", 8))
self.assertEqual(decode(br"[\x0]\x0", "replace"), (b"[?]?", 8))
# From RFC 3492
punycode_testcases = [
# A Arabic (Egyptian):
("\u0644\u064A\u0647\u0645\u0627\u0628\u062A\u0643\u0644"
"\u0645\u0648\u0634\u0639\u0631\u0628\u064A\u061F",
b"egbpdaj6bu4bxfgehfvwxn"),
# B Chinese (simplified):
("\u4ED6\u4EEC\u4E3A\u4EC0\u4E48\u4E0D\u8BF4\u4E2D\u6587",
b"ihqwcrb4cv8a8dqg056pqjye"),
# C Chinese (traditional):
("\u4ED6\u5011\u7232\u4EC0\u9EBD\u4E0D\u8AAA\u4E2D\u6587",
b"ihqwctvzc91f659drss3x8bo0yb"),
# D Czech: Pro<ccaron>prost<ecaron>nemluv<iacute><ccaron>esky
("\u0050\u0072\u006F\u010D\u0070\u0072\u006F\u0073\u0074"
"\u011B\u006E\u0065\u006D\u006C\u0075\u0076\u00ED\u010D"
"\u0065\u0073\u006B\u0079",
b"Proprostnemluvesky-uyb24dma41a"),
# E Hebrew:
("\u05DC\u05DE\u05D4\u05D4\u05DD\u05E4\u05E9\u05D5\u05D8"
"\u05DC\u05D0\u05DE\u05D3\u05D1\u05E8\u05D9\u05DD\u05E2"
"\u05D1\u05E8\u05D9\u05EA",
b"4dbcagdahymbxekheh6e0a7fei0b"),
# F Hindi (Devanagari):
("\u092F\u0939\u0932\u094B\u0917\u0939\u093F\u0928\u094D"
"\u0926\u0940\u0915\u094D\u092F\u094B\u0902\u0928\u0939"
"\u0940\u0902\u092C\u094B\u0932\u0938\u0915\u0924\u0947"
"\u0939\u0948\u0902",
b"i1baa7eci9glrd9b2ae1bj0hfcgg6iyaf8o0a1dig0cd"),
#(G) Japanese (kanji and hiragana):
("\u306A\u305C\u307F\u3093\u306A\u65E5\u672C\u8A9E\u3092"
"\u8A71\u3057\u3066\u304F\u308C\u306A\u3044\u306E\u304B",
b"n8jok5ay5dzabd5bym9f0cm5685rrjetr6pdxa"),
# (H) Korean (Hangul syllables):
("\uC138\uACC4\uC758\uBAA8\uB4E0\uC0AC\uB78C\uB4E4\uC774"
"\uD55C\uAD6D\uC5B4\uB97C\uC774\uD574\uD55C\uB2E4\uBA74"
"\uC5BC\uB9C8\uB098\uC88B\uC744\uAE4C",
b"989aomsvi5e83db1d2a355cv1e0vak1dwrv93d5xbh15a0dt30a5j"
b"psd879ccm6fea98c"),
# (I) Russian (Cyrillic):
("\u043F\u043E\u0447\u0435\u043C\u0443\u0436\u0435\u043E"
"\u043D\u0438\u043D\u0435\u0433\u043E\u0432\u043E\u0440"
"\u044F\u0442\u043F\u043E\u0440\u0443\u0441\u0441\u043A"
"\u0438",
b"b1abfaaepdrnnbgefbaDotcwatmq2g4l"),
# (J) Spanish: Porqu<eacute>nopuedensimplementehablarenEspa<ntilde>ol
("\u0050\u006F\u0072\u0071\u0075\u00E9\u006E\u006F\u0070"
"\u0075\u0065\u0064\u0065\u006E\u0073\u0069\u006D\u0070"
"\u006C\u0065\u006D\u0065\u006E\u0074\u0065\u0068\u0061"
"\u0062\u006C\u0061\u0072\u0065\u006E\u0045\u0073\u0070"
"\u0061\u00F1\u006F\u006C",
b"PorqunopuedensimplementehablarenEspaol-fmd56a"),
# (K) Vietnamese:
# T<adotbelow>isaoh<odotbelow>kh<ocirc>ngth<ecirchookabove>ch\
# <ihookabove>n<oacute>iti<ecircacute>ngVi<ecircdotbelow>t
("\u0054\u1EA1\u0069\u0073\u0061\u006F\u0068\u1ECD\u006B"
"\u0068\u00F4\u006E\u0067\u0074\u0068\u1EC3\u0063\u0068"
"\u1EC9\u006E\u00F3\u0069\u0074\u0069\u1EBF\u006E\u0067"
"\u0056\u0069\u1EC7\u0074",
b"TisaohkhngthchnitingVit-kjcr8268qyxafd2f1b9g"),
#(L) 3<nen>B<gumi><kinpachi><sensei>
("\u0033\u5E74\u0042\u7D44\u91D1\u516B\u5148\u751F",
b"3B-ww4c5e180e575a65lsy2b"),
# (M) <amuro><namie>-with-SUPER-MONKEYS
("\u5B89\u5BA4\u5948\u7F8E\u6075\u002D\u0077\u0069\u0074"
"\u0068\u002D\u0053\u0055\u0050\u0045\u0052\u002D\u004D"
"\u004F\u004E\u004B\u0045\u0059\u0053",
b"-with-SUPER-MONKEYS-pc58ag80a8qai00g7n9n"),
# (N) Hello-Another-Way-<sorezore><no><basho>
("\u0048\u0065\u006C\u006C\u006F\u002D\u0041\u006E\u006F"
"\u0074\u0068\u0065\u0072\u002D\u0057\u0061\u0079\u002D"
"\u305D\u308C\u305E\u308C\u306E\u5834\u6240",
b"Hello-Another-Way--fc4qua05auwb3674vfr0b"),
# (O) <hitotsu><yane><no><shita>2
("\u3072\u3068\u3064\u5C4B\u6839\u306E\u4E0B\u0032",
b"2-u9tlzr9756bt3uc0v"),
# (P) Maji<de>Koi<suru>5<byou><mae>
("\u004D\u0061\u006A\u0069\u3067\u004B\u006F\u0069\u3059"
"\u308B\u0035\u79D2\u524D",
b"MajiKoi5-783gue6qz075azm5e"),
# (Q) <pafii>de<runba>
("\u30D1\u30D5\u30A3\u30FC\u0064\u0065\u30EB\u30F3\u30D0",
b"de-jg4avhby1noc0d"),
# (R) <sono><supiido><de>
("\u305D\u306E\u30B9\u30D4\u30FC\u30C9\u3067",
b"d9juau41awczczp"),
# (S) -> $1.00 <-
("\u002D\u003E\u0020\u0024\u0031\u002E\u0030\u0030\u0020"
"\u003C\u002D",
b"-> $1.00 <--")
]
for i in punycode_testcases:
if len(i)!=2:
print(repr(i))
class PunycodeTest(unittest.TestCase):
def test_encode(self):
for uni, puny in punycode_testcases:
# Need to convert both strings to lower case, since
# some of the extended encodings use upper case, but our
# code produces only lower case. Converting just puny to
# lower is also insufficient, since some of the input characters
# are upper case.
self.assertEqual(
str(uni.encode("punycode"), "ascii").lower(),
str(puny, "ascii").lower()
)
def test_decode(self):
for uni, puny in punycode_testcases:
self.assertEqual(uni, puny.decode("punycode"))
puny = puny.decode("ascii").encode("ascii")
self.assertEqual(uni, puny.decode("punycode"))
def test_decode_invalid(self):
testcases = [
(b"xn--w&", "strict", UnicodeError()),
(b"xn--w&", "ignore", "xn-"),
]
for puny, errors, expected in testcases:
with self.subTest(puny=puny, errors=errors):
if isinstance(expected, Exception):
self.assertRaises(UnicodeError, puny.decode, "punycode", errors)
else:
self.assertEqual(puny.decode("punycode", errors), expected)
# From http://www.gnu.org/software/libidn/draft-josefsson-idn-test-vectors.html
nameprep_tests = [
# 3.1 Map to nothing.
(b'foo\xc2\xad\xcd\x8f\xe1\xa0\x86\xe1\xa0\x8bbar'
b'\xe2\x80\x8b\xe2\x81\xa0baz\xef\xb8\x80\xef\xb8\x88\xef'
b'\xb8\x8f\xef\xbb\xbf',
b'foobarbaz'),
# 3.2 Case folding ASCII U+0043 U+0041 U+0046 U+0045.
(b'CAFE',
b'cafe'),
# 3.3 Case folding 8bit U+00DF (german sharp s).
# The original test case is bogus; it says \xc3\xdf
(b'\xc3\x9f',
b'ss'),
# 3.4 Case folding U+0130 (turkish capital I with dot).
(b'\xc4\xb0',
b'i\xcc\x87'),
# 3.5 Case folding multibyte U+0143 U+037A.
(b'\xc5\x83\xcd\xba',
b'\xc5\x84 \xce\xb9'),
# 3.6 Case folding U+2121 U+33C6 U+1D7BB.
# XXX: skip this as it fails in UCS-2 mode
#('\xe2\x84\xa1\xe3\x8f\x86\xf0\x9d\x9e\xbb',
# 'telc\xe2\x88\x95kg\xcf\x83'),
(None, None),
# 3.7 Normalization of U+006a U+030c U+00A0 U+00AA.
(b'j\xcc\x8c\xc2\xa0\xc2\xaa',
b'\xc7\xb0 a'),
# 3.8 Case folding U+1FB7 and normalization.
(b'\xe1\xbe\xb7',
b'\xe1\xbe\xb6\xce\xb9'),
# 3.9 Self-reverting case folding U+01F0 and normalization.
# The original test case is bogus, it says `\xc7\xf0'
(b'\xc7\xb0',
b'\xc7\xb0'),
# 3.10 Self-reverting case folding U+0390 and normalization.
(b'\xce\x90',
b'\xce\x90'),
# 3.11 Self-reverting case folding U+03B0 and normalization.
(b'\xce\xb0',
b'\xce\xb0'),
# 3.12 Self-reverting case folding U+1E96 and normalization.
(b'\xe1\xba\x96',
b'\xe1\xba\x96'),
# 3.13 Self-reverting case folding U+1F56 and normalization.
(b'\xe1\xbd\x96',
b'\xe1\xbd\x96'),
# 3.14 ASCII space character U+0020.
(b' ',
b' '),
# 3.15 Non-ASCII 8bit space character U+00A0.
(b'\xc2\xa0',
b' '),
# 3.16 Non-ASCII multibyte space character U+1680.
(b'\xe1\x9a\x80',
None),
# 3.17 Non-ASCII multibyte space character U+2000.
(b'\xe2\x80\x80',
b' '),
# 3.18 Zero Width Space U+200b.
(b'\xe2\x80\x8b',
b''),
# 3.19 Non-ASCII multibyte space character U+3000.
(b'\xe3\x80\x80',
b' '),
# 3.20 ASCII control characters U+0010 U+007F.
(b'\x10\x7f',
b'\x10\x7f'),
# 3.21 Non-ASCII 8bit control character U+0085.
(b'\xc2\x85',
None),
# 3.22 Non-ASCII multibyte control character U+180E.
(b'\xe1\xa0\x8e',
None),
# 3.23 Zero Width No-Break Space U+FEFF.
(b'\xef\xbb\xbf',
b''),
# 3.24 Non-ASCII control character U+1D175.
(b'\xf0\x9d\x85\xb5',
None),
# 3.25 Plane 0 private use character U+F123.
(b'\xef\x84\xa3',
None),
# 3.26 Plane 15 private use character U+F1234.
(b'\xf3\xb1\x88\xb4',
None),
# 3.27 Plane 16 private use character U+10F234.
(b'\xf4\x8f\x88\xb4',
None),
# 3.28 Non-character code point U+8FFFE.
(b'\xf2\x8f\xbf\xbe',
None),
# 3.29 Non-character code point U+10FFFF.
(b'\xf4\x8f\xbf\xbf',
None),
# 3.30 Surrogate code U+DF42.
(b'\xed\xbd\x82',
None),
# 3.31 Non-plain text character U+FFFD.
(b'\xef\xbf\xbd',
None),
# 3.32 Ideographic description character U+2FF5.
(b'\xe2\xbf\xb5',
None),
# 3.33 Display property character U+0341.
(b'\xcd\x81',
b'\xcc\x81'),
# 3.34 Left-to-right mark U+200E.
(b'\xe2\x80\x8e',
None),
# 3.35 Deprecated U+202A.
(b'\xe2\x80\xaa',
None),
# 3.36 Language tagging character U+E0001.
(b'\xf3\xa0\x80\x81',
None),
# 3.37 Language tagging character U+E0042.
(b'\xf3\xa0\x81\x82',
None),
# 3.38 Bidi: RandALCat character U+05BE and LCat characters.
(b'foo\xd6\xbebar',
None),
# 3.39 Bidi: RandALCat character U+FD50 and LCat characters.
(b'foo\xef\xb5\x90bar',
None),
# 3.40 Bidi: RandALCat character U+FB38 and LCat characters.
(b'foo\xef\xb9\xb6bar',
b'foo \xd9\x8ebar'),
# 3.41 Bidi: RandALCat without trailing RandALCat U+0627 U+0031.
(b'\xd8\xa71',
None),
# 3.42 Bidi: RandALCat character U+0627 U+0031 U+0628.
(b'\xd8\xa71\xd8\xa8',
b'\xd8\xa71\xd8\xa8'),
# 3.43 Unassigned code point U+E0002.
# Skip this test as we allow unassigned
#(b'\xf3\xa0\x80\x82',
# None),
(None, None),
# 3.44 Larger test (shrinking).
# Original test case reads \xc3\xdf
(b'X\xc2\xad\xc3\x9f\xc4\xb0\xe2\x84\xa1j\xcc\x8c\xc2\xa0\xc2'
b'\xaa\xce\xb0\xe2\x80\x80',
b'xssi\xcc\x87tel\xc7\xb0 a\xce\xb0 '),
# 3.45 Larger test (expanding).
# Original test case reads \xc3\x9f
(b'X\xc3\x9f\xe3\x8c\x96\xc4\xb0\xe2\x84\xa1\xe2\x92\x9f\xe3\x8c'
b'\x80',
b'xss\xe3\x82\xad\xe3\x83\xad\xe3\x83\xa1\xe3\x83\xbc\xe3'
b'\x83\x88\xe3\x83\xabi\xcc\x87tel\x28d\x29\xe3\x82'
b'\xa2\xe3\x83\x91\xe3\x83\xbc\xe3\x83\x88')
]
class NameprepTest(unittest.TestCase):
def test_nameprep(self):
from encodings.idna import nameprep
for pos, (orig, prepped) in enumerate(nameprep_tests):
if orig is None:
# Skipped
continue
# The Unicode strings are given in UTF-8
orig = str(orig, "utf-8", "surrogatepass")
if prepped is None:
# Input contains prohibited characters
self.assertRaises(UnicodeError, nameprep, orig)
else:
prepped = str(prepped, "utf-8", "surrogatepass")
try:
self.assertEqual(nameprep(orig), prepped)
except Exception as e:
raise support.TestFailed("Test 3.%d: %s" % (pos+1, str(e)))
class IDNACodecTest(unittest.TestCase):
def test_builtin_decode(self):
self.assertEqual(str(b"python.org", "idna"), "python.org")
self.assertEqual(str(b"python.org.", "idna"), "python.org.")
self.assertEqual(str(b"xn--pythn-mua.org", "idna"), "pyth\xf6n.org")
self.assertEqual(str(b"xn--pythn-mua.org.", "idna"), "pyth\xf6n.org.")
def test_builtin_encode(self):
self.assertEqual("python.org".encode("idna"), b"python.org")
self.assertEqual("python.org.".encode("idna"), b"python.org.")
self.assertEqual("pyth\xf6n.org".encode("idna"), b"xn--pythn-mua.org")
self.assertEqual("pyth\xf6n.org.".encode("idna"), b"xn--pythn-mua.org.")
def test_stream(self):
r = codecs.getreader("idna")(io.BytesIO(b"abc"))
r.read(3)
self.assertEqual(r.read(), "")
def test_incremental_decode(self):
self.assertEqual(
"".join(codecs.iterdecode((bytes([c]) for c in b"python.org"), "idna")),
"python.org"
)
self.assertEqual(
"".join(codecs.iterdecode((bytes([c]) for c in b"python.org."), "idna")),
"python.org."
)
self.assertEqual(
"".join(codecs.iterdecode((bytes([c]) for c in b"xn--pythn-mua.org."), "idna")),
"pyth\xf6n.org."
)
self.assertEqual(
"".join(codecs.iterdecode((bytes([c]) for c in b"xn--pythn-mua.org."), "idna")),
"pyth\xf6n.org."
)
decoder = codecs.getincrementaldecoder("idna")()
self.assertEqual(decoder.decode(b"xn--xam", ), "")
self.assertEqual(decoder.decode(b"ple-9ta.o", ), "\xe4xample.")
self.assertEqual(decoder.decode(b"rg"), "")
self.assertEqual(decoder.decode(b"", True), "org")
decoder.reset()
self.assertEqual(decoder.decode(b"xn--xam", ), "")
self.assertEqual(decoder.decode(b"ple-9ta.o", ), "\xe4xample.")
self.assertEqual(decoder.decode(b"rg."), "org.")
self.assertEqual(decoder.decode(b"", True), "")
def test_incremental_encode(self):
self.assertEqual(
b"".join(codecs.iterencode("python.org", "idna")),
b"python.org"
)
self.assertEqual(
b"".join(codecs.iterencode("python.org.", "idna")),
b"python.org."
)
self.assertEqual(
b"".join(codecs.iterencode("pyth\xf6n.org.", "idna")),
b"xn--pythn-mua.org."
)
self.assertEqual(
b"".join(codecs.iterencode("pyth\xf6n.org.", "idna")),
b"xn--pythn-mua.org."
)
encoder = codecs.getincrementalencoder("idna")()
self.assertEqual(encoder.encode("\xe4x"), b"")
self.assertEqual(encoder.encode("ample.org"), b"xn--xample-9ta.")
self.assertEqual(encoder.encode("", True), b"org")
encoder.reset()
self.assertEqual(encoder.encode("\xe4x"), b"")
self.assertEqual(encoder.encode("ample.org."), b"xn--xample-9ta.org.")
self.assertEqual(encoder.encode("", True), b"")
def test_errors(self):
"""Only supports "strict" error handler"""
"python.org".encode("idna", "strict")
b"python.org".decode("idna", "strict")
for errors in ("ignore", "replace", "backslashreplace",
"surrogateescape"):
self.assertRaises(Exception, "python.org".encode, "idna", errors)
self.assertRaises(Exception,
b"python.org".decode, "idna", errors)
class CodecsModuleTest(unittest.TestCase):
def test_decode(self):
self.assertEqual(codecs.decode(b'\xe4\xf6\xfc', 'latin-1'),
'\xe4\xf6\xfc')
self.assertRaises(TypeError, codecs.decode)
self.assertEqual(codecs.decode(b'abc'), 'abc')
self.assertRaises(UnicodeDecodeError, codecs.decode, b'\xff', 'ascii')
# test keywords
self.assertEqual(codecs.decode(obj=b'\xe4\xf6\xfc', encoding='latin-1'),
'\xe4\xf6\xfc')
self.assertEqual(codecs.decode(b'[\xff]', 'ascii', errors='ignore'),
'[]')
def test_encode(self):
self.assertEqual(codecs.encode('\xe4\xf6\xfc', 'latin-1'),
b'\xe4\xf6\xfc')
self.assertRaises(TypeError, codecs.encode)
self.assertRaises(LookupError, codecs.encode, "foo", "__spam__")
self.assertEqual(codecs.encode('abc'), b'abc')
self.assertRaises(UnicodeEncodeError, codecs.encode, '\xffff', 'ascii')
# test keywords
self.assertEqual(codecs.encode(obj='\xe4\xf6\xfc', encoding='latin-1'),
b'\xe4\xf6\xfc')
self.assertEqual(codecs.encode('[\xff]', 'ascii', errors='ignore'),
b'[]')
def test_register(self):
self.assertRaises(TypeError, codecs.register)
self.assertRaises(TypeError, codecs.register, 42)
def test_lookup(self):
self.assertRaises(TypeError, codecs.lookup)
self.assertRaises(LookupError, codecs.lookup, "__spam__")
self.assertRaises(LookupError, codecs.lookup, " ")
def test_getencoder(self):
self.assertRaises(TypeError, codecs.getencoder)
self.assertRaises(LookupError, codecs.getencoder, "__spam__")
def test_getdecoder(self):
self.assertRaises(TypeError, codecs.getdecoder)
self.assertRaises(LookupError, codecs.getdecoder, "__spam__")
def test_getreader(self):
self.assertRaises(TypeError, codecs.getreader)
self.assertRaises(LookupError, codecs.getreader, "__spam__")
def test_getwriter(self):
self.assertRaises(TypeError, codecs.getwriter)
self.assertRaises(LookupError, codecs.getwriter, "__spam__")
def test_lookup_issue1813(self):
# Issue #1813: under Turkish locales, lookup of some codecs failed
# because 'I' is lowercased as "ı" (dotless i)
oldlocale = locale.setlocale(locale.LC_CTYPE)
self.addCleanup(locale.setlocale, locale.LC_CTYPE, oldlocale)
try:
locale.setlocale(locale.LC_CTYPE, 'tr_TR')
except locale.Error:
# Unsupported locale on this system
self.skipTest('test needs Turkish locale')
c = codecs.lookup('ASCII')
self.assertEqual(c.name, 'ascii')
def test_all(self):
api = (
"encode", "decode",
"register", "CodecInfo", "Codec", "IncrementalEncoder",
"IncrementalDecoder", "StreamReader", "StreamWriter", "lookup",
"getencoder", "getdecoder", "getincrementalencoder",
"getincrementaldecoder", "getreader", "getwriter",
"register_error", "lookup_error",
"strict_errors", "replace_errors", "ignore_errors",
"xmlcharrefreplace_errors", "backslashreplace_errors",
"namereplace_errors",
"open", "EncodedFile",
"iterencode", "iterdecode",
"BOM", "BOM_BE", "BOM_LE",
"BOM_UTF8", "BOM_UTF16", "BOM_UTF16_BE", "BOM_UTF16_LE",
"BOM_UTF32", "BOM_UTF32_BE", "BOM_UTF32_LE",
"BOM32_BE", "BOM32_LE", "BOM64_BE", "BOM64_LE", # Undocumented
"StreamReaderWriter", "StreamRecoder",
)
self.assertCountEqual(api, codecs.__all__)
for api in codecs.__all__:
getattr(codecs, api)
def test_open(self):
self.addCleanup(support.unlink, support.TESTFN)
for mode in ('w', 'r', 'r+', 'w+', 'a', 'a+'):
with self.subTest(mode), \
codecs.open(support.TESTFN, mode, 'ascii') as file:
self.assertIsInstance(file, codecs.StreamReaderWriter)
def test_undefined(self):
self.assertRaises(UnicodeError, codecs.encode, 'abc', 'undefined')
self.assertRaises(UnicodeError, codecs.decode, b'abc', 'undefined')
self.assertRaises(UnicodeError, codecs.encode, '', 'undefined')
self.assertRaises(UnicodeError, codecs.decode, b'', 'undefined')
for errors in ('strict', 'ignore', 'replace', 'backslashreplace'):
self.assertRaises(UnicodeError,
codecs.encode, 'abc', 'undefined', errors)
self.assertRaises(UnicodeError,
codecs.decode, b'abc', 'undefined', errors)
def test_file_closes_if_lookup_error_raised(self):
mock_open = mock.mock_open()
with mock.patch('builtins.open', mock_open) as file:
with self.assertRaises(LookupError):
codecs.open(support.TESTFN, 'wt', 'invalid-encoding')
file().close.assert_called()
class StreamReaderTest(unittest.TestCase):
def setUp(self):
self.reader = codecs.getreader('utf-8')
self.stream = io.BytesIO(b'\xed\x95\x9c\n\xea\xb8\x80')
def test_readlines(self):
f = self.reader(self.stream)
self.assertEqual(f.readlines(), ['\ud55c\n', '\uae00'])
class EncodedFileTest(unittest.TestCase):
def test_basic(self):
f = io.BytesIO(b'\xed\x95\x9c\n\xea\xb8\x80')
ef = codecs.EncodedFile(f, 'utf-16-le', 'utf-8')
self.assertEqual(ef.read(), b'\\\xd5\n\x00\x00\xae')
f = io.BytesIO()
ef = codecs.EncodedFile(f, 'utf-8', 'latin-1')
ef.write(b'\xc3\xbc')
self.assertEqual(f.getvalue(), b'\xfc')
all_unicode_encodings = [
"ascii",
"big5",
"big5hkscs",
"charmap",
"cp037",
"cp1006",
"cp1026",
"cp1125",
"cp1140",
"cp1250",
"cp1251",
"cp1252",
"cp1253",
"cp1254",
"cp1255",
"cp1256",
"cp1257",
"cp1258",
"cp424",
"cp437",
"cp500",
"cp720",
"cp737",
"cp775",
"cp850",
"cp852",
"cp855",
"cp856",
"cp857",
"cp858",
"cp860",
"cp861",
"cp862",
"cp863",
"cp864",
"cp865",
"cp866",
"cp869",
"cp874",
"cp875",
"cp932",
"cp949",
"cp950",
"euc_jis_2004",
"euc_jisx0213",
"euc_jp",
"euc_kr",
"gb18030",
"gb2312",
"gbk",
"hp_roman8",
"hz",
"idna",
"iso2022_jp",
"iso2022_jp_1",
"iso2022_jp_2",
"iso2022_jp_2004",
"iso2022_jp_3",
"iso2022_jp_ext",
"iso2022_kr",
"iso8859_1",
"iso8859_10",
"iso8859_11",
"iso8859_13",
"iso8859_14",
"iso8859_15",
"iso8859_16",
"iso8859_2",
"iso8859_3",
"iso8859_4",
"iso8859_5",
"iso8859_6",
"iso8859_7",
"iso8859_8",
"iso8859_9",
"johab",
"koi8_r",
"koi8_t",
"koi8_u",
"kz1048",
"latin_1",
"mac_cyrillic",
"mac_greek",
"mac_iceland",
"mac_latin2",
"mac_roman",
"mac_turkish",
"palmos",
"ptcp154",
"punycode",
"raw_unicode_escape",
"shift_jis",
"shift_jis_2004",
"shift_jisx0213",
"tis_620",
"unicode_escape",
"utf_16",
"utf_16_be",
"utf_16_le",
"utf_7",
"utf_8",
]
if hasattr(codecs, "mbcs_encode"):
all_unicode_encodings.append("mbcs")
if hasattr(codecs, "oem_encode"):
all_unicode_encodings.append("oem")
# The following encoding is not tested, because it's not supposed
# to work:
# "undefined"
# The following encodings don't work in stateful mode
broken_unicode_with_stateful = [
"punycode",
]
class BasicUnicodeTest(unittest.TestCase, MixInCheckStateHandling):
def test_basics(self):
s = "abc123" # all codecs should be able to encode these
for encoding in all_unicode_encodings:
name = codecs.lookup(encoding).name
if encoding.endswith("_codec"):
name += "_codec"
elif encoding == "latin_1":
name = "latin_1"
self.assertEqual(encoding.replace("_", "-"), name.replace("_", "-"))
(b, size) = codecs.getencoder(encoding)(s)
self.assertEqual(size, len(s), "encoding=%r" % encoding)
(chars, size) = codecs.getdecoder(encoding)(b)
self.assertEqual(chars, s, "encoding=%r" % encoding)
if encoding not in broken_unicode_with_stateful:
# check stream reader/writer
q = Queue(b"")
writer = codecs.getwriter(encoding)(q)
encodedresult = b""
for c in s:
writer.write(c)
chunk = q.read()
self.assertTrue(type(chunk) is bytes, type(chunk))
encodedresult += chunk
q = Queue(b"")
reader = codecs.getreader(encoding)(q)
decodedresult = ""
for c in encodedresult:
q.write(bytes([c]))
decodedresult += reader.read()
self.assertEqual(decodedresult, s, "encoding=%r" % encoding)
if encoding not in broken_unicode_with_stateful:
# check incremental decoder/encoder and iterencode()/iterdecode()
try:
encoder = codecs.getincrementalencoder(encoding)()
except LookupError: # no IncrementalEncoder
pass
else:
# check incremental decoder/encoder
encodedresult = b""
for c in s:
encodedresult += encoder.encode(c)
encodedresult += encoder.encode("", True)
decoder = codecs.getincrementaldecoder(encoding)()
decodedresult = ""
for c in encodedresult:
decodedresult += decoder.decode(bytes([c]))
decodedresult += decoder.decode(b"", True)
self.assertEqual(decodedresult, s,
"encoding=%r" % encoding)
# check iterencode()/iterdecode()
result = "".join(codecs.iterdecode(
codecs.iterencode(s, encoding), encoding))
self.assertEqual(result, s, "encoding=%r" % encoding)
# check iterencode()/iterdecode() with empty string
result = "".join(codecs.iterdecode(
codecs.iterencode("", encoding), encoding))
self.assertEqual(result, "")
if encoding not in ("idna", "mbcs"):
# check incremental decoder/encoder with errors argument
try:
encoder = codecs.getincrementalencoder(encoding)("ignore")
except LookupError: # no IncrementalEncoder
pass
else:
encodedresult = b"".join(encoder.encode(c) for c in s)
decoder = codecs.getincrementaldecoder(encoding)("ignore")
decodedresult = "".join(decoder.decode(bytes([c]))
for c in encodedresult)
self.assertEqual(decodedresult, s,
"encoding=%r" % encoding)
@support.cpython_only
def test_basics_capi(self):
s = "abc123" # all codecs should be able to encode these
for encoding in all_unicode_encodings:
if encoding not in broken_unicode_with_stateful:
# check incremental decoder/encoder (fetched via the C API)
try:
cencoder = _testcapi.codec_incrementalencoder(encoding)
except LookupError: # no IncrementalEncoder
pass
else:
# check C API
encodedresult = b""
for c in s:
encodedresult += cencoder.encode(c)
encodedresult += cencoder.encode("", True)
cdecoder = _testcapi.codec_incrementaldecoder(encoding)
decodedresult = ""
for c in encodedresult:
decodedresult += cdecoder.decode(bytes([c]))
decodedresult += cdecoder.decode(b"", True)
self.assertEqual(decodedresult, s,
"encoding=%r" % encoding)
if encoding not in ("idna", "mbcs"):
# check incremental decoder/encoder with errors argument
try:
cencoder = _testcapi.codec_incrementalencoder(encoding, "ignore")
except LookupError: # no IncrementalEncoder
pass
else:
encodedresult = b"".join(cencoder.encode(c) for c in s)
cdecoder = _testcapi.codec_incrementaldecoder(encoding, "ignore")
decodedresult = "".join(cdecoder.decode(bytes([c]))
for c in encodedresult)
self.assertEqual(decodedresult, s,
"encoding=%r" % encoding)
def test_seek(self):
# all codecs should be able to encode these
s = "%s\n%s\n" % (100*"abc123", 100*"def456")
for encoding in all_unicode_encodings:
if encoding == "idna": # FIXME: See SF bug #1163178
continue
if encoding in broken_unicode_with_stateful:
continue
reader = codecs.getreader(encoding)(io.BytesIO(s.encode(encoding)))
for t in range(5):
# Test that calling seek resets the internal codec state and buffers
reader.seek(0, 0)
data = reader.read()
self.assertEqual(s, data)
def test_bad_decode_args(self):
for encoding in all_unicode_encodings:
decoder = codecs.getdecoder(encoding)
self.assertRaises(TypeError, decoder)
if encoding not in ("idna", "punycode"):
self.assertRaises(TypeError, decoder, 42)
def test_bad_encode_args(self):
for encoding in all_unicode_encodings:
encoder = codecs.getencoder(encoding)
self.assertRaises(TypeError, encoder)
def test_encoding_map_type_initialized(self):
from encodings import cp1140
# This used to crash, we are only verifying there's no crash.
table_type = type(cp1140.encoding_table)
self.assertEqual(table_type, table_type)
def test_decoder_state(self):
# Check that getstate() and setstate() handle the state properly
u = "abc123"
for encoding in all_unicode_encodings:
if encoding not in broken_unicode_with_stateful:
self.check_state_handling_decode(encoding, u, u.encode(encoding))
self.check_state_handling_encode(encoding, u, u.encode(encoding))
class CharmapTest(unittest.TestCase):
def test_decode_with_string_map(self):
self.assertEqual(
codecs.charmap_decode(b"\x00\x01\x02", "strict", "abc"),
("abc", 3)
)
self.assertEqual(
codecs.charmap_decode(b"\x00\x01\x02", "strict", "\U0010FFFFbc"),
("\U0010FFFFbc", 3)
)
self.assertRaises(UnicodeDecodeError,
codecs.charmap_decode, b"\x00\x01\x02", "strict", "ab"
)
self.assertRaises(UnicodeDecodeError,
codecs.charmap_decode, b"\x00\x01\x02", "strict", "ab\ufffe"
)
self.assertEqual(
codecs.charmap_decode(b"\x00\x01\x02", "replace", "ab"),
("ab\ufffd", 3)
)
self.assertEqual(
codecs.charmap_decode(b"\x00\x01\x02", "replace", "ab\ufffe"),
("ab\ufffd", 3)
)
self.assertEqual(
codecs.charmap_decode(b"\x00\x01\x02", "backslashreplace", "ab"),
("ab\\x02", 3)
)
self.assertEqual(
codecs.charmap_decode(b"\x00\x01\x02", "backslashreplace", "ab\ufffe"),
("ab\\x02", 3)
)
self.assertEqual(
codecs.charmap_decode(b"\x00\x01\x02", "ignore", "ab"),
("ab", 3)
)
self.assertEqual(
codecs.charmap_decode(b"\x00\x01\x02", "ignore", "ab\ufffe"),
("ab", 3)
)
allbytes = bytes(range(256))
self.assertEqual(
codecs.charmap_decode(allbytes, "ignore", ""),
("", len(allbytes))
)
def test_decode_with_int2str_map(self):
self.assertEqual(
codecs.charmap_decode(b"\x00\x01\x02", "strict",
{0: 'a', 1: 'b', 2: 'c'}),
("abc", 3)
)
self.assertEqual(
codecs.charmap_decode(b"\x00\x01\x02", "strict",
{0: 'Aa', 1: 'Bb', 2: 'Cc'}),
("AaBbCc", 3)
)
self.assertEqual(
codecs.charmap_decode(b"\x00\x01\x02", "strict",
{0: '\U0010FFFF', 1: 'b', 2: 'c'}),
("\U0010FFFFbc", 3)
)
self.assertEqual(
codecs.charmap_decode(b"\x00\x01\x02", "strict",
{0: 'a', 1: 'b', 2: ''}),
("ab", 3)
)
self.assertRaises(UnicodeDecodeError,
codecs.charmap_decode, b"\x00\x01\x02", "strict",
{0: 'a', 1: 'b'}
)
self.assertRaises(UnicodeDecodeError,
codecs.charmap_decode, b"\x00\x01\x02", "strict",
{0: 'a', 1: 'b', 2: None}
)
# Issue #14850
self.assertRaises(UnicodeDecodeError,
codecs.charmap_decode, b"\x00\x01\x02", "strict",
{0: 'a', 1: 'b', 2: '\ufffe'}
)
self.assertEqual(
codecs.charmap_decode(b"\x00\x01\x02", "replace",
{0: 'a', 1: 'b'}),
("ab\ufffd", 3)
)
self.assertEqual(
codecs.charmap_decode(b"\x00\x01\x02", "replace",
{0: 'a', 1: 'b', 2: None}),
("ab\ufffd", 3)
)
# Issue #14850
self.assertEqual(
codecs.charmap_decode(b"\x00\x01\x02", "replace",
{0: 'a', 1: 'b', 2: '\ufffe'}),
("ab\ufffd", 3)
)
self.assertEqual(
codecs.charmap_decode(b"\x00\x01\x02", "backslashreplace",
{0: 'a', 1: 'b'}),
("ab\\x02", 3)
)
self.assertEqual(
codecs.charmap_decode(b"\x00\x01\x02", "backslashreplace",
{0: 'a', 1: 'b', 2: None}),
("ab\\x02", 3)
)
# Issue #14850
self.assertEqual(
codecs.charmap_decode(b"\x00\x01\x02", "backslashreplace",
{0: 'a', 1: 'b', 2: '\ufffe'}),
("ab\\x02", 3)
)
self.assertEqual(
codecs.charmap_decode(b"\x00\x01\x02", "ignore",
{0: 'a', 1: 'b'}),
("ab", 3)
)
self.assertEqual(
codecs.charmap_decode(b"\x00\x01\x02", "ignore",
{0: 'a', 1: 'b', 2: None}),
("ab", 3)
)
# Issue #14850
self.assertEqual(
codecs.charmap_decode(b"\x00\x01\x02", "ignore",
{0: 'a', 1: 'b', 2: '\ufffe'}),
("ab", 3)
)
allbytes = bytes(range(256))
self.assertEqual(
codecs.charmap_decode(allbytes, "ignore", {}),
("", len(allbytes))
)
def test_decode_with_int2int_map(self):
a = ord('a')
b = ord('b')
c = ord('c')
self.assertEqual(
codecs.charmap_decode(b"\x00\x01\x02", "strict",
{0: a, 1: b, 2: c}),
("abc", 3)
)
# Issue #15379
self.assertEqual(
codecs.charmap_decode(b"\x00\x01\x02", "strict",
{0: 0x10FFFF, 1: b, 2: c}),
("\U0010FFFFbc", 3)
)
self.assertEqual(
codecs.charmap_decode(b"\x00\x01\x02", "strict",
{0: sys.maxunicode, 1: b, 2: c}),
(chr(sys.maxunicode) + "bc", 3)
)
self.assertRaises(TypeError,
codecs.charmap_decode, b"\x00\x01\x02", "strict",
{0: sys.maxunicode + 1, 1: b, 2: c}
)
self.assertRaises(UnicodeDecodeError,
codecs.charmap_decode, b"\x00\x01\x02", "strict",
{0: a, 1: b},
)
self.assertRaises(UnicodeDecodeError,
codecs.charmap_decode, b"\x00\x01\x02", "strict",
{0: a, 1: b, 2: 0xFFFE},
)
self.assertEqual(
codecs.charmap_decode(b"\x00\x01\x02", "replace",
{0: a, 1: b}),
("ab\ufffd", 3)
)
self.assertEqual(
codecs.charmap_decode(b"\x00\x01\x02", "replace",
{0: a, 1: b, 2: 0xFFFE}),
("ab\ufffd", 3)
)
self.assertEqual(
codecs.charmap_decode(b"\x00\x01\x02", "backslashreplace",
{0: a, 1: b}),
("ab\\x02", 3)
)
self.assertEqual(
codecs.charmap_decode(b"\x00\x01\x02", "backslashreplace",
{0: a, 1: b, 2: 0xFFFE}),
("ab\\x02", 3)
)
self.assertEqual(
codecs.charmap_decode(b"\x00\x01\x02", "ignore",
{0: a, 1: b}),
("ab", 3)
)
self.assertEqual(
codecs.charmap_decode(b"\x00\x01\x02", "ignore",
{0: a, 1: b, 2: 0xFFFE}),
("ab", 3)
)
class WithStmtTest(unittest.TestCase):
def test_encodedfile(self):
f = io.BytesIO(b"\xc3\xbc")
with codecs.EncodedFile(f, "latin-1", "utf-8") as ef:
self.assertEqual(ef.read(), b"\xfc")
self.assertTrue(f.closed)
def test_streamreaderwriter(self):
f = io.BytesIO(b"\xc3\xbc")
info = codecs.lookup("utf-8")
with codecs.StreamReaderWriter(f, info.streamreader,
info.streamwriter, 'strict') as srw:
self.assertEqual(srw.read(), "\xfc")
class TypesTest(unittest.TestCase):
def test_decode_unicode(self):
# Most decoders don't accept unicode input
decoders = [
codecs.utf_7_decode,
codecs.utf_8_decode,
codecs.utf_16_le_decode,
codecs.utf_16_be_decode,
codecs.utf_16_ex_decode,
codecs.utf_32_decode,
codecs.utf_32_le_decode,
codecs.utf_32_be_decode,
codecs.utf_32_ex_decode,
codecs.latin_1_decode,
codecs.ascii_decode,
codecs.charmap_decode,
]
if hasattr(codecs, "mbcs_decode"):
decoders.append(codecs.mbcs_decode)
for decoder in decoders:
self.assertRaises(TypeError, decoder, "xxx")
def test_unicode_escape(self):
# Escape-decoding a unicode string is supported and gives the same
# result as decoding the equivalent ASCII bytes string.
self.assertEqual(codecs.unicode_escape_decode(r"\u1234"), ("\u1234", 6))
self.assertEqual(codecs.unicode_escape_decode(br"\u1234"), ("\u1234", 6))
self.assertEqual(codecs.raw_unicode_escape_decode(r"\u1234"), ("\u1234", 6))
self.assertEqual(codecs.raw_unicode_escape_decode(br"\u1234"), ("\u1234", 6))
self.assertRaises(UnicodeDecodeError, codecs.unicode_escape_decode, br"\U00110000")
self.assertEqual(codecs.unicode_escape_decode(r"\U00110000", "replace"), ("\ufffd", 10))
self.assertEqual(codecs.unicode_escape_decode(r"\U00110000", "backslashreplace"),
(r"\x5c\x55\x30\x30\x31\x31\x30\x30\x30\x30", 10))
self.assertRaises(UnicodeDecodeError, codecs.raw_unicode_escape_decode, br"\U00110000")
self.assertEqual(codecs.raw_unicode_escape_decode(r"\U00110000", "replace"), ("\ufffd", 10))
self.assertEqual(codecs.raw_unicode_escape_decode(r"\U00110000", "backslashreplace"),
(r"\x5c\x55\x30\x30\x31\x31\x30\x30\x30\x30", 10))
class UnicodeEscapeTest(unittest.TestCase):
def test_empty(self):
self.assertEqual(codecs.unicode_escape_encode(""), (b"", 0))
self.assertEqual(codecs.unicode_escape_decode(b""), ("", 0))
def test_raw_encode(self):
encode = codecs.unicode_escape_encode
for b in range(32, 127):
if b != b'\\'[0]:
self.assertEqual(encode(chr(b)), (bytes([b]), 1))
def test_raw_decode(self):
decode = codecs.unicode_escape_decode
for b in range(256):
if b != b'\\'[0]:
self.assertEqual(decode(bytes([b]) + b'0'), (chr(b) + '0', 2))
def test_escape_encode(self):
encode = codecs.unicode_escape_encode
check = coding_checker(self, encode)
check('\t', br'\t')
check('\n', br'\n')
check('\r', br'\r')
check('\\', br'\\')
for b in range(32):
if chr(b) not in '\t\n\r':
check(chr(b), ('\\x%02x' % b).encode())
for b in range(127, 256):
check(chr(b), ('\\x%02x' % b).encode())
check('\u20ac', br'\u20ac')
check('\U0001d120', br'\U0001d120')
def test_escape_decode(self):
decode = codecs.unicode_escape_decode
check = coding_checker(self, decode)
check(b"[\\\n]", "[]")
check(br'[\"]', '["]')
check(br"[\']", "[']")
check(br"[\\]", r"[\]")
check(br"[\a]", "[\x07]")
check(br"[\b]", "[\x08]")
check(br"[\t]", "[\x09]")
check(br"[\n]", "[\x0a]")
check(br"[\v]", "[\x0b]")
check(br"[\f]", "[\x0c]")
check(br"[\r]", "[\x0d]")
check(br"[\7]", "[\x07]")
check(br"[\78]", "[\x078]")
check(br"[\41]", "[!]")
check(br"[\418]", "[!8]")
check(br"[\101]", "[A]")
check(br"[\1010]", "[A0]")
check(br"[\x41]", "[A]")
check(br"[\x410]", "[A0]")
check(br"\u20ac", "\u20ac")
check(br"\U0001d120", "\U0001d120")
for i in range(97, 123):
b = bytes([i])
if b not in b'abfnrtuvx':
with self.assertWarns(DeprecationWarning):
check(b"\\" + b, "\\" + chr(i))
if b.upper() not in b'UN':
with self.assertWarns(DeprecationWarning):
check(b"\\" + b.upper(), "\\" + chr(i-32))
with self.assertWarns(DeprecationWarning):
check(br"\8", "\\8")
with self.assertWarns(DeprecationWarning):
check(br"\9", "\\9")
with self.assertWarns(DeprecationWarning):
check(b"\\\xfa", "\\\xfa")
def test_decode_errors(self):
decode = codecs.unicode_escape_decode
for c, d in (b'x', 2), (b'u', 4), (b'U', 4):
for i in range(d):
self.assertRaises(UnicodeDecodeError, decode,
b"\\" + c + b"0"*i)
self.assertRaises(UnicodeDecodeError, decode,
b"[\\" + c + b"0"*i + b"]")
data = b"[\\" + c + b"0"*i + b"]\\" + c + b"0"*i
self.assertEqual(decode(data, "ignore"), ("[]", len(data)))
self.assertEqual(decode(data, "replace"),
("[\ufffd]\ufffd", len(data)))
self.assertRaises(UnicodeDecodeError, decode, br"\U00110000")
self.assertEqual(decode(br"\U00110000", "ignore"), ("", 10))
self.assertEqual(decode(br"\U00110000", "replace"), ("\ufffd", 10))
class RawUnicodeEscapeTest(unittest.TestCase):
def test_empty(self):
self.assertEqual(codecs.raw_unicode_escape_encode(""), (b"", 0))
self.assertEqual(codecs.raw_unicode_escape_decode(b""), ("", 0))
def test_raw_encode(self):
encode = codecs.raw_unicode_escape_encode
for b in range(256):
self.assertEqual(encode(chr(b)), (bytes([b]), 1))
def test_raw_decode(self):
decode = codecs.raw_unicode_escape_decode
for b in range(256):
self.assertEqual(decode(bytes([b]) + b'0'), (chr(b) + '0', 2))
def test_escape_encode(self):
encode = codecs.raw_unicode_escape_encode
check = coding_checker(self, encode)
for b in range(256):
if b not in b'uU':
check('\\' + chr(b), b'\\' + bytes([b]))
check('\u20ac', br'\u20ac')
check('\U0001d120', br'\U0001d120')
def test_escape_decode(self):
decode = codecs.raw_unicode_escape_decode
check = coding_checker(self, decode)
for b in range(256):
if b not in b'uU':
check(b'\\' + bytes([b]), '\\' + chr(b))
check(br"\u20ac", "\u20ac")
check(br"\U0001d120", "\U0001d120")
def test_decode_errors(self):
decode = codecs.raw_unicode_escape_decode
for c, d in (b'u', 4), (b'U', 4):
for i in range(d):
self.assertRaises(UnicodeDecodeError, decode,
b"\\" + c + b"0"*i)
self.assertRaises(UnicodeDecodeError, decode,
b"[\\" + c + b"0"*i + b"]")
data = b"[\\" + c + b"0"*i + b"]\\" + c + b"0"*i
self.assertEqual(decode(data, "ignore"), ("[]", len(data)))
self.assertEqual(decode(data, "replace"),
("[\ufffd]\ufffd", len(data)))
self.assertRaises(UnicodeDecodeError, decode, br"\U00110000")
self.assertEqual(decode(br"\U00110000", "ignore"), ("", 10))
self.assertEqual(decode(br"\U00110000", "replace"), ("\ufffd", 10))
class EscapeEncodeTest(unittest.TestCase):
def test_escape_encode(self):
tests = [
(b'', (b'', 0)),
(b'foobar', (b'foobar', 6)),
(b'spam\0eggs', (b'spam\\x00eggs', 9)),
(b'a\'b', (b"a\\'b", 3)),
(b'b\\c', (b'b\\\\c', 3)),
(b'c\nd', (b'c\\nd', 3)),
(b'd\re', (b'd\\re', 3)),
(b'f\x7fg', (b'f\\x7fg', 3)),
]
for data, output in tests:
with self.subTest(data=data):
self.assertEqual(codecs.escape_encode(data), output)
self.assertRaises(TypeError, codecs.escape_encode, 'spam')
self.assertRaises(TypeError, codecs.escape_encode, bytearray(b'spam'))
class SurrogateEscapeTest(unittest.TestCase):
def test_utf8(self):
# Bad byte
self.assertEqual(b"foo\x80bar".decode("utf-8", "surrogateescape"),
"foo\udc80bar")
self.assertEqual("foo\udc80bar".encode("utf-8", "surrogateescape"),
b"foo\x80bar")
# bad-utf-8 encoded surrogate
self.assertEqual(b"\xed\xb0\x80".decode("utf-8", "surrogateescape"),
"\udced\udcb0\udc80")
self.assertEqual("\udced\udcb0\udc80".encode("utf-8", "surrogateescape"),
b"\xed\xb0\x80")
def test_ascii(self):
# bad byte
self.assertEqual(b"foo\x80bar".decode("ascii", "surrogateescape"),
"foo\udc80bar")
self.assertEqual("foo\udc80bar".encode("ascii", "surrogateescape"),
b"foo\x80bar")
def test_charmap(self):
# bad byte: \xa5 is unmapped in iso-8859-3
self.assertEqual(b"foo\xa5bar".decode("iso-8859-3", "surrogateescape"),
"foo\udca5bar")
self.assertEqual("foo\udca5bar".encode("iso-8859-3", "surrogateescape"),
b"foo\xa5bar")
def test_latin1(self):
# Issue6373
self.assertEqual("\udce4\udceb\udcef\udcf6\udcfc".encode("latin-1", "surrogateescape"),
b"\xe4\xeb\xef\xf6\xfc")
class BomTest(unittest.TestCase):
def test_seek0(self):
data = "1234567890"
tests = ("utf-16",
"utf-16-le",
"utf-16-be",
"utf-32",
"utf-32-le",
"utf-32-be")
self.addCleanup(support.unlink, support.TESTFN)
for encoding in tests:
# Check if the BOM is written only once
with codecs.open(support.TESTFN, 'w+', encoding=encoding) as f:
f.write(data)
f.write(data)
f.seek(0)
self.assertEqual(f.read(), data * 2)
f.seek(0)
self.assertEqual(f.read(), data * 2)
# Check that the BOM is written after a seek(0)
with codecs.open(support.TESTFN, 'w+', encoding=encoding) as f:
f.write(data[0])
self.assertNotEqual(f.tell(), 0)
f.seek(0)
f.write(data)
f.seek(0)
self.assertEqual(f.read(), data)
# (StreamWriter) Check that the BOM is written after a seek(0)
with codecs.open(support.TESTFN, 'w+', encoding=encoding) as f:
f.writer.write(data[0])
self.assertNotEqual(f.writer.tell(), 0)
f.writer.seek(0)
f.writer.write(data)
f.seek(0)
self.assertEqual(f.read(), data)
# Check that the BOM is not written after a seek() at a position
# different than the start
with codecs.open(support.TESTFN, 'w+', encoding=encoding) as f:
f.write(data)
f.seek(f.tell())
f.write(data)
f.seek(0)
self.assertEqual(f.read(), data * 2)
# (StreamWriter) Check that the BOM is not written after a seek()
# at a position different than the start
with codecs.open(support.TESTFN, 'w+', encoding=encoding) as f:
f.writer.write(data)
f.writer.seek(f.writer.tell())
f.writer.write(data)
f.seek(0)
self.assertEqual(f.read(), data * 2)
bytes_transform_encodings = [
"base64_codec",
"uu_codec",
"quopri_codec",
"hex_codec",
]
transform_aliases = {
"base64_codec": ["base64", "base_64"],
"uu_codec": ["uu"],
"quopri_codec": ["quopri", "quoted_printable", "quotedprintable"],
"hex_codec": ["hex"],
"rot_13": ["rot13"],
}
try:
import zlib
except ImportError:
zlib = None
else:
bytes_transform_encodings.append("zlib_codec")
transform_aliases["zlib_codec"] = ["zip", "zlib"]
try:
import bz2
except ImportError:
pass
else:
bytes_transform_encodings.append("bz2_codec")
transform_aliases["bz2_codec"] = ["bz2"]
class TransformCodecTest(unittest.TestCase):
def test_basics(self):
binput = bytes(range(256))
for encoding in bytes_transform_encodings:
with self.subTest(encoding=encoding):
# generic codecs interface
(o, size) = codecs.getencoder(encoding)(binput)
self.assertEqual(size, len(binput))
(i, size) = codecs.getdecoder(encoding)(o)
self.assertEqual(size, len(o))
self.assertEqual(i, binput)
def test_read(self):
for encoding in bytes_transform_encodings:
with self.subTest(encoding=encoding):
sin = codecs.encode(b"\x80", encoding)
reader = codecs.getreader(encoding)(io.BytesIO(sin))
sout = reader.read()
self.assertEqual(sout, b"\x80")
def test_readline(self):
for encoding in bytes_transform_encodings:
with self.subTest(encoding=encoding):
sin = codecs.encode(b"\x80", encoding)
reader = codecs.getreader(encoding)(io.BytesIO(sin))
sout = reader.readline()
self.assertEqual(sout, b"\x80")
def test_buffer_api_usage(self):
# We check all the transform codecs accept memoryview input
# for encoding and decoding
# and also that they roundtrip correctly
original = b"12345\x80"
for encoding in bytes_transform_encodings:
with self.subTest(encoding=encoding):
data = original
view = memoryview(data)
data = codecs.encode(data, encoding)
view_encoded = codecs.encode(view, encoding)
self.assertEqual(view_encoded, data)
view = memoryview(data)
data = codecs.decode(data, encoding)
self.assertEqual(data, original)
view_decoded = codecs.decode(view, encoding)
self.assertEqual(view_decoded, data)
def test_text_to_binary_blacklists_binary_transforms(self):
# Check binary -> binary codecs give a good error for str input
bad_input = "bad input type"
for encoding in bytes_transform_encodings:
with self.subTest(encoding=encoding):
fmt = (r"{!r} is not a text encoding; "
r"use codecs.encode\(\) to handle arbitrary codecs")
msg = fmt.format(encoding)
with self.assertRaisesRegex(LookupError, msg) as failure:
bad_input.encode(encoding)
self.assertIsNone(failure.exception.__cause__)
def test_text_to_binary_blacklists_text_transforms(self):
# Check str.encode gives a good error message for str -> str codecs
msg = (r"^'rot_13' is not a text encoding; "
r"use codecs.encode\(\) to handle arbitrary codecs")
with self.assertRaisesRegex(LookupError, msg):
"just an example message".encode("rot_13")
def test_binary_to_text_blacklists_binary_transforms(self):
# Check bytes.decode and bytearray.decode give a good error
# message for binary -> binary codecs
data = b"encode first to ensure we meet any format restrictions"
for encoding in bytes_transform_encodings:
with self.subTest(encoding=encoding):
encoded_data = codecs.encode(data, encoding)
fmt = (r"{!r} is not a text encoding; "
r"use codecs.decode\(\) to handle arbitrary codecs")
msg = fmt.format(encoding)
with self.assertRaisesRegex(LookupError, msg):
encoded_data.decode(encoding)
with self.assertRaisesRegex(LookupError, msg):
bytearray(encoded_data).decode(encoding)
def test_binary_to_text_blacklists_text_transforms(self):
# Check str -> str codec gives a good error for binary input
for bad_input in (b"immutable", bytearray(b"mutable")):
with self.subTest(bad_input=bad_input):
msg = (r"^'rot_13' is not a text encoding; "
r"use codecs.decode\(\) to handle arbitrary codecs")
with self.assertRaisesRegex(LookupError, msg) as failure:
bad_input.decode("rot_13")
self.assertIsNone(failure.exception.__cause__)
@unittest.skipUnless(zlib, "Requires zlib support")
def test_custom_zlib_error_is_wrapped(self):
# Check zlib codec gives a good error for malformed input
msg = "^decoding with 'zlib_codec' codec failed"
with self.assertRaisesRegex(Exception, msg) as failure:
codecs.decode(b"hello", "zlib_codec")
self.assertIsInstance(failure.exception.__cause__,
type(failure.exception))
def test_custom_hex_error_is_wrapped(self):
# Check hex codec gives a good error for malformed input
msg = "^decoding with 'hex_codec' codec failed"
with self.assertRaisesRegex(Exception, msg) as failure:
codecs.decode(b"hello", "hex_codec")
self.assertIsInstance(failure.exception.__cause__,
type(failure.exception))
# Unfortunately, the bz2 module throws OSError, which the codec
# machinery currently can't wrap :(
# Ensure codec aliases from http://bugs.python.org/issue7475 work
def test_aliases(self):
for codec_name, aliases in transform_aliases.items():
expected_name = codecs.lookup(codec_name).name
for alias in aliases:
with self.subTest(alias=alias):
info = codecs.lookup(alias)
self.assertEqual(info.name, expected_name)
def test_quopri_stateless(self):
# Should encode with quotetabs=True
encoded = codecs.encode(b"space tab\teol \n", "quopri-codec")
self.assertEqual(encoded, b"space=20tab=09eol=20\n")
# But should still support unescaped tabs and spaces
unescaped = b"space tab eol\n"
self.assertEqual(codecs.decode(unescaped, "quopri-codec"), unescaped)
def test_uu_invalid(self):
# Missing "begin" line
self.assertRaises(ValueError, codecs.decode, b"", "uu-codec")
# The codec system tries to wrap exceptions in order to ensure the error
# mentions the operation being performed and the codec involved. We
# currently *only* want this to happen for relatively stateless
# exceptions, where the only significant information they contain is their
# type and a single str argument.
# Use a local codec registry to avoid appearing to leak objects when
# registering multiple search functions
_TEST_CODECS = {}
def _get_test_codec(codec_name):
return _TEST_CODECS.get(codec_name)
codecs.register(_get_test_codec) # Returns None, not usable as a decorator
try:
# Issue #22166: Also need to clear the internal cache in CPython
from _codecs import _forget_codec
except ImportError:
def _forget_codec(codec_name):
pass
class ExceptionChainingTest(unittest.TestCase):
def setUp(self):
# There's no way to unregister a codec search function, so we just
# ensure we render this one fairly harmless after the test
# case finishes by using the test case repr as the codec name
# The codecs module normalizes codec names, although this doesn't
# appear to be formally documented...
# We also make sure we use a truly unique id for the custom codec
# to avoid issues with the codec cache when running these tests
# multiple times (e.g. when hunting for refleaks)
unique_id = repr(self) + str(id(self))
self.codec_name = encodings.normalize_encoding(unique_id).lower()
# We store the object to raise on the instance because of a bad
# interaction between the codec caching (which means we can't
# recreate the codec entry) and regrtest refleak hunting (which
# runs the same test instance multiple times). This means we
# need to ensure the codecs call back in to the instance to find
# out which exception to raise rather than binding them in a
# closure to an object that may change on the next run
self.obj_to_raise = RuntimeError
def tearDown(self):
_TEST_CODECS.pop(self.codec_name, None)
# Issue #22166: Also pop from caches to avoid appearance of ref leaks
encodings._cache.pop(self.codec_name, None)
try:
_forget_codec(self.codec_name)
except KeyError:
pass
def set_codec(self, encode, decode):
codec_info = codecs.CodecInfo(encode, decode,
name=self.codec_name)
_TEST_CODECS[self.codec_name] = codec_info
@contextlib.contextmanager
def assertWrapped(self, operation, exc_type, msg):
full_msg = r"{} with {!r} codec failed \({}: {}\)".format(
operation, self.codec_name, exc_type.__name__, msg)
with self.assertRaisesRegex(exc_type, full_msg) as caught:
yield caught
self.assertIsInstance(caught.exception.__cause__, exc_type)
self.assertIsNotNone(caught.exception.__cause__.__traceback__)
def raise_obj(self, *args, **kwds):
# Helper to dynamically change the object raised by a test codec
raise self.obj_to_raise
def check_wrapped(self, obj_to_raise, msg, exc_type=RuntimeError):
self.obj_to_raise = obj_to_raise
self.set_codec(self.raise_obj, self.raise_obj)
with self.assertWrapped("encoding", exc_type, msg):
"str_input".encode(self.codec_name)
with self.assertWrapped("encoding", exc_type, msg):
codecs.encode("str_input", self.codec_name)
with self.assertWrapped("decoding", exc_type, msg):
b"bytes input".decode(self.codec_name)
with self.assertWrapped("decoding", exc_type, msg):
codecs.decode(b"bytes input", self.codec_name)
def test_raise_by_type(self):
self.check_wrapped(RuntimeError, "")
def test_raise_by_value(self):
msg = "This should be wrapped"
self.check_wrapped(RuntimeError(msg), msg)
def test_raise_grandchild_subclass_exact_size(self):
msg = "This should be wrapped"
class MyRuntimeError(RuntimeError):
__slots__ = ()
self.check_wrapped(MyRuntimeError(msg), msg, MyRuntimeError)
def test_raise_subclass_with_weakref_support(self):
msg = "This should be wrapped"
class MyRuntimeError(RuntimeError):
pass
self.check_wrapped(MyRuntimeError(msg), msg, MyRuntimeError)
def check_not_wrapped(self, obj_to_raise, msg):
def raise_obj(*args, **kwds):
raise obj_to_raise
self.set_codec(raise_obj, raise_obj)
with self.assertRaisesRegex(RuntimeError, msg):
"str input".encode(self.codec_name)
with self.assertRaisesRegex(RuntimeError, msg):
codecs.encode("str input", self.codec_name)
with self.assertRaisesRegex(RuntimeError, msg):
b"bytes input".decode(self.codec_name)
with self.assertRaisesRegex(RuntimeError, msg):
codecs.decode(b"bytes input", self.codec_name)
def test_init_override_is_not_wrapped(self):
class CustomInit(RuntimeError):
def __init__(self):
pass
self.check_not_wrapped(CustomInit, "")
def test_new_override_is_not_wrapped(self):
class CustomNew(RuntimeError):
def __new__(cls):
return super().__new__(cls)
self.check_not_wrapped(CustomNew, "")
def test_instance_attribute_is_not_wrapped(self):
msg = "This should NOT be wrapped"
exc = RuntimeError(msg)
exc.attr = 1
self.check_not_wrapped(exc, "^{}$".format(msg))
def test_non_str_arg_is_not_wrapped(self):
self.check_not_wrapped(RuntimeError(1), "1")
def test_multiple_args_is_not_wrapped(self):
msg_re = r"^\('a', 'b', 'c'\)$"
self.check_not_wrapped(RuntimeError('a', 'b', 'c'), msg_re)
# http://bugs.python.org/issue19609
def test_codec_lookup_failure_not_wrapped(self):
msg = "^unknown encoding: {}$".format(self.codec_name)
# The initial codec lookup should not be wrapped
with self.assertRaisesRegex(LookupError, msg):
"str input".encode(self.codec_name)
with self.assertRaisesRegex(LookupError, msg):
codecs.encode("str input", self.codec_name)
with self.assertRaisesRegex(LookupError, msg):
b"bytes input".decode(self.codec_name)
with self.assertRaisesRegex(LookupError, msg):
codecs.decode(b"bytes input", self.codec_name)
def test_unflagged_non_text_codec_handling(self):
# The stdlib non-text codecs are now marked so they're
# pre-emptively skipped by the text model related methods
# However, third party codecs won't be flagged, so we still make
# sure the case where an inappropriate output type is produced is
# handled appropriately
def encode_to_str(*args, **kwds):
return "not bytes!", 0
def decode_to_bytes(*args, **kwds):
return b"not str!", 0
self.set_codec(encode_to_str, decode_to_bytes)
# No input or output type checks on the codecs module functions
encoded = codecs.encode(None, self.codec_name)
self.assertEqual(encoded, "not bytes!")
decoded = codecs.decode(None, self.codec_name)
self.assertEqual(decoded, b"not str!")
# Text model methods should complain
fmt = (r"^{!r} encoder returned 'str' instead of 'bytes'; "
r"use codecs.encode\(\) to encode to arbitrary types$")
msg = fmt.format(self.codec_name)
with self.assertRaisesRegex(TypeError, msg):
"str_input".encode(self.codec_name)
fmt = (r"^{!r} decoder returned 'bytes' instead of 'str'; "
r"use codecs.decode\(\) to decode to arbitrary types$")
msg = fmt.format(self.codec_name)
with self.assertRaisesRegex(TypeError, msg):
b"bytes input".decode(self.codec_name)
@unittest.skipUnless(sys.platform == 'win32',
'code pages are specific to Windows')
class CodePageTest(unittest.TestCase):
CP_UTF8 = 65001
def test_invalid_code_page(self):
self.assertRaises(ValueError, codecs.code_page_encode, -1, 'a')
self.assertRaises(ValueError, codecs.code_page_decode, -1, b'a')
self.assertRaises(OSError, codecs.code_page_encode, 123, 'a')
self.assertRaises(OSError, codecs.code_page_decode, 123, b'a')
def test_code_page_name(self):
self.assertRaisesRegex(UnicodeEncodeError, 'cp932',
codecs.code_page_encode, 932, '\xff')
self.assertRaisesRegex(UnicodeDecodeError, 'cp932',
codecs.code_page_decode, 932, b'\x81\x00', 'strict', True)
self.assertRaisesRegex(UnicodeDecodeError, 'CP_UTF8',
codecs.code_page_decode, self.CP_UTF8, b'\xff', 'strict', True)
def check_decode(self, cp, tests):
for raw, errors, expected in tests:
if expected is not None:
try:
decoded = codecs.code_page_decode(cp, raw, errors, True)
except UnicodeDecodeError as err:
self.fail('Unable to decode %a from "cp%s" with '
'errors=%r: %s' % (raw, cp, errors, err))
self.assertEqual(decoded[0], expected,
'%a.decode("cp%s", %r)=%a != %a'
% (raw, cp, errors, decoded[0], expected))
# assert 0 <= decoded[1] <= len(raw)
self.assertGreaterEqual(decoded[1], 0)
self.assertLessEqual(decoded[1], len(raw))
else:
self.assertRaises(UnicodeDecodeError,
codecs.code_page_decode, cp, raw, errors, True)
def check_encode(self, cp, tests):
for text, errors, expected in tests:
if expected is not None:
try:
encoded = codecs.code_page_encode(cp, text, errors)
except UnicodeEncodeError as err:
self.fail('Unable to encode %a to "cp%s" with '
'errors=%r: %s' % (text, cp, errors, err))
self.assertEqual(encoded[0], expected,
'%a.encode("cp%s", %r)=%a != %a'
% (text, cp, errors, encoded[0], expected))
self.assertEqual(encoded[1], len(text))
else:
self.assertRaises(UnicodeEncodeError,
codecs.code_page_encode, cp, text, errors)
def test_cp932(self):
self.check_encode(932, (
('abc', 'strict', b'abc'),
('\uff44\u9a3e', 'strict', b'\x82\x84\xe9\x80'),
# test error handlers
('\xff', 'strict', None),
('[\xff]', 'ignore', b'[]'),
('[\xff]', 'replace', b'[y]'),
('[\u20ac]', 'replace', b'[?]'),
('[\xff]', 'backslashreplace', b'[\\xff]'),
('[\xff]', 'namereplace',
b'[\\N{LATIN SMALL LETTER Y WITH DIAERESIS}]'),
('[\xff]', 'xmlcharrefreplace', b'[&#255;]'),
('\udcff', 'strict', None),
('[\udcff]', 'surrogateescape', b'[\xff]'),
('[\udcff]', 'surrogatepass', None),
))
self.check_decode(932, (
(b'abc', 'strict', 'abc'),
(b'\x82\x84\xe9\x80', 'strict', '\uff44\u9a3e'),
# invalid bytes
(b'[\xff]', 'strict', None),
(b'[\xff]', 'ignore', '[]'),
(b'[\xff]', 'replace', '[\ufffd]'),
(b'[\xff]', 'backslashreplace', '[\\xff]'),
(b'[\xff]', 'surrogateescape', '[\udcff]'),
(b'[\xff]', 'surrogatepass', None),
(b'\x81\x00abc', 'strict', None),
(b'\x81\x00abc', 'ignore', '\x00abc'),
(b'\x81\x00abc', 'replace', '\ufffd\x00abc'),
(b'\x81\x00abc', 'backslashreplace', '\\x81\x00abc'),
))
def test_cp1252(self):
self.check_encode(1252, (
('abc', 'strict', b'abc'),
('\xe9\u20ac', 'strict', b'\xe9\x80'),
('\xff', 'strict', b'\xff'),
# test error handlers
('\u0141', 'strict', None),
('\u0141', 'ignore', b''),
('\u0141', 'replace', b'L'),
('\udc98', 'surrogateescape', b'\x98'),
('\udc98', 'surrogatepass', None),
))
self.check_decode(1252, (
(b'abc', 'strict', 'abc'),
(b'\xe9\x80', 'strict', '\xe9\u20ac'),
(b'\xff', 'strict', '\xff'),
))
def test_cp_utf7(self):
cp = 65000
self.check_encode(cp, (
('abc', 'strict', b'abc'),
('\xe9\u20ac', 'strict', b'+AOkgrA-'),
('\U0010ffff', 'strict', b'+2//f/w-'),
('\udc80', 'strict', b'+3IA-'),
('\ufffd', 'strict', b'+//0-'),
))
self.check_decode(cp, (
(b'abc', 'strict', 'abc'),
(b'+AOkgrA-', 'strict', '\xe9\u20ac'),
(b'+2//f/w-', 'strict', '\U0010ffff'),
(b'+3IA-', 'strict', '\udc80'),
(b'+//0-', 'strict', '\ufffd'),
# invalid bytes
(b'[+/]', 'strict', '[]'),
(b'[\xff]', 'strict', '[\xff]'),
))
def test_multibyte_encoding(self):
self.check_decode(932, (
(b'\x84\xe9\x80', 'ignore', '\u9a3e'),
(b'\x84\xe9\x80', 'replace', '\ufffd\u9a3e'),
))
self.check_decode(self.CP_UTF8, (
(b'\xff\xf4\x8f\xbf\xbf', 'ignore', '\U0010ffff'),
(b'\xff\xf4\x8f\xbf\xbf', 'replace', '\ufffd\U0010ffff'),
))
self.check_encode(self.CP_UTF8, (
('[\U0010ffff\uDC80]', 'ignore', b'[\xf4\x8f\xbf\xbf]'),
('[\U0010ffff\uDC80]', 'replace', b'[\xf4\x8f\xbf\xbf?]'),
))
def test_code_page_decode_flags(self):
# Issue #36312: For some code pages (e.g. UTF-7) flags for
# MultiByteToWideChar() must be set to 0.
if support.verbose:
sys.stdout.write('\n')
for cp in (50220, 50221, 50222, 50225, 50227, 50229,
*range(57002, 57011+1), 65000):
# On small versions of Windows like Windows IoT
# not all codepages are present.
# A missing codepage causes an OSError exception
# so check for the codepage before decoding
if is_code_page_present(cp):
self.assertEqual(codecs.code_page_decode(cp, b'abc'), ('abc', 3), f'cp{cp}')
else:
if support.verbose:
print(f" skipping cp={cp}")
self.assertEqual(codecs.code_page_decode(42, b'abc'),
('\uf061\uf062\uf063', 3))
def test_incremental(self):
decoded = codecs.code_page_decode(932, b'\x82', 'strict', False)
self.assertEqual(decoded, ('', 0))
decoded = codecs.code_page_decode(932,
b'\xe9\x80\xe9', 'strict',
False)
self.assertEqual(decoded, ('\u9a3e', 2))
decoded = codecs.code_page_decode(932,
b'\xe9\x80\xe9\x80', 'strict',
False)
self.assertEqual(decoded, ('\u9a3e\u9a3e', 4))
decoded = codecs.code_page_decode(932,
b'abc', 'strict',
False)
self.assertEqual(decoded, ('abc', 3))
def test_mbcs_alias(self):
# Check that looking up our 'default' codepage will return
# mbcs when we don't have a more specific one available
with mock.patch('_winapi.GetACP', return_value=123):
codec = codecs.lookup('cp123')
self.assertEqual(codec.name, 'mbcs')
@support.bigmemtest(size=2**31, memuse=7, dry_run=False)
def test_large_input(self, size):
# Test input longer than INT_MAX.
# Input should contain undecodable bytes before and after
# the INT_MAX limit.
encoded = (b'01234567' * ((size//8)-1) +
b'\x85\x86\xea\xeb\xec\xef\xfc\xfd\xfe\xff')
self.assertEqual(len(encoded), size+2)
decoded = codecs.code_page_decode(932, encoded, 'surrogateescape', True)
self.assertEqual(decoded[1], len(encoded))
del encoded
self.assertEqual(len(decoded[0]), decoded[1])
self.assertEqual(decoded[0][:10], '0123456701')
self.assertEqual(decoded[0][-20:],
'6701234567'
'\udc85\udc86\udcea\udceb\udcec'
'\udcef\udcfc\udcfd\udcfe\udcff')
@support.bigmemtest(size=2**31, memuse=6, dry_run=False)
def test_large_utf8_input(self, size):
# Test input longer than INT_MAX.
# Input should contain a decodable multi-byte character
# surrounding INT_MAX
encoded = (b'0123456\xed\x84\x80' * (size//8))
self.assertEqual(len(encoded), size // 8 * 10)
decoded = codecs.code_page_decode(65001, encoded, 'ignore', True)
self.assertEqual(decoded[1], len(encoded))
del encoded
self.assertEqual(len(decoded[0]), size)
self.assertEqual(decoded[0][:10], '0123456\ud10001')
self.assertEqual(decoded[0][-11:], '56\ud1000123456\ud100')
class ASCIITest(unittest.TestCase):
def test_encode(self):
self.assertEqual('abc123'.encode('ascii'), b'abc123')
def test_encode_error(self):
for data, error_handler, expected in (
('[\x80\xff\u20ac]', 'ignore', b'[]'),
('[\x80\xff\u20ac]', 'replace', b'[???]'),
('[\x80\xff\u20ac]', 'xmlcharrefreplace', b'[&#128;&#255;&#8364;]'),
('[\x80\xff\u20ac\U000abcde]', 'backslashreplace',
b'[\\x80\\xff\\u20ac\\U000abcde]'),
('[\udc80\udcff]', 'surrogateescape', b'[\x80\xff]'),
):
with self.subTest(data=data, error_handler=error_handler,
expected=expected):
self.assertEqual(data.encode('ascii', error_handler),
expected)
def test_encode_surrogateescape_error(self):
with self.assertRaises(UnicodeEncodeError):
# the first character can be decoded, but not the second
'\udc80\xff'.encode('ascii', 'surrogateescape')
def test_decode(self):
self.assertEqual(b'abc'.decode('ascii'), 'abc')
def test_decode_error(self):
for data, error_handler, expected in (
(b'[\x80\xff]', 'ignore', '[]'),
(b'[\x80\xff]', 'replace', '[\ufffd\ufffd]'),
(b'[\x80\xff]', 'surrogateescape', '[\udc80\udcff]'),
(b'[\x80\xff]', 'backslashreplace', '[\\x80\\xff]'),
):
with self.subTest(data=data, error_handler=error_handler,
expected=expected):
self.assertEqual(data.decode('ascii', error_handler),
expected)
class Latin1Test(unittest.TestCase):
def test_encode(self):
for data, expected in (
('abc', b'abc'),
('\x80\xe9\xff', b'\x80\xe9\xff'),
):
with self.subTest(data=data, expected=expected):
self.assertEqual(data.encode('latin1'), expected)
def test_encode_errors(self):
for data, error_handler, expected in (
('[\u20ac\udc80]', 'ignore', b'[]'),
('[\u20ac\udc80]', 'replace', b'[??]'),
('[\u20ac\U000abcde]', 'backslashreplace',
b'[\\u20ac\\U000abcde]'),
('[\u20ac\udc80]', 'xmlcharrefreplace', b'[&#8364;&#56448;]'),
('[\udc80\udcff]', 'surrogateescape', b'[\x80\xff]'),
):
with self.subTest(data=data, error_handler=error_handler,
expected=expected):
self.assertEqual(data.encode('latin1', error_handler),
expected)
def test_encode_surrogateescape_error(self):
with self.assertRaises(UnicodeEncodeError):
# the first character can be decoded, but not the second
'\udc80\u20ac'.encode('latin1', 'surrogateescape')
def test_decode(self):
for data, expected in (
(b'abc', 'abc'),
(b'[\x80\xff]', '[\x80\xff]'),
):
with self.subTest(data=data, expected=expected):
self.assertEqual(data.decode('latin1'), expected)
class StreamRecoderTest(unittest.TestCase):
def test_writelines(self):
bio = io.BytesIO()
codec = codecs.lookup('ascii')
sr = codecs.StreamRecoder(bio, codec.encode, codec.decode,
encodings.ascii.StreamReader, encodings.ascii.StreamWriter)
sr.writelines([b'a', b'b'])
self.assertEqual(bio.getvalue(), b'ab')
def test_write(self):
bio = io.BytesIO()
codec = codecs.lookup('latin1')
# Recode from Latin-1 to utf-8.
sr = codecs.StreamRecoder(bio, codec.encode, codec.decode,
encodings.utf_8.StreamReader, encodings.utf_8.StreamWriter)
text = 'àñé'
sr.write(text.encode('latin1'))
self.assertEqual(bio.getvalue(), text.encode('utf-8'))
def test_seeking_read(self):
bio = io.BytesIO('line1\nline2\nline3\n'.encode('utf-16-le'))
sr = codecs.EncodedFile(bio, 'utf-8', 'utf-16-le')
self.assertEqual(sr.readline(), b'line1\n')
sr.seek(0)
self.assertEqual(sr.readline(), b'line1\n')
self.assertEqual(sr.readline(), b'line2\n')
self.assertEqual(sr.readline(), b'line3\n')
self.assertEqual(sr.readline(), b'')
def test_seeking_write(self):
bio = io.BytesIO('123456789\n'.encode('utf-16-le'))
sr = codecs.EncodedFile(bio, 'utf-8', 'utf-16-le')
# Test that seek() only resets its internal buffer when offset
# and whence are zero.
sr.seek(2)
sr.write(b'\nabc\n')
self.assertEqual(sr.readline(), b'789\n')
sr.seek(0)
self.assertEqual(sr.readline(), b'1\n')
self.assertEqual(sr.readline(), b'abc\n')
self.assertEqual(sr.readline(), b'789\n')
@unittest.skipIf(_testcapi is None, 'need _testcapi module')
class LocaleCodecTest(unittest.TestCase):
"""
Test indirectly _Py_DecodeUTF8Ex() and _Py_EncodeUTF8Ex().
"""
ENCODING = sys.getfilesystemencoding()
STRINGS = ("ascii", "ulatin1:\xa7\xe9",
"u255:\xff",
"UCS:\xe9\u20ac\U0010ffff",
"surrogates:\uDC80\uDCFF")
BYTES_STRINGS = (b"blatin1:\xa7\xe9", b"b255:\xff")
SURROGATES = "\uDC80\uDCFF"
def encode(self, text, errors="strict"):
return _testcapi.EncodeLocaleEx(text, 0, errors)
def check_encode_strings(self, errors):
for text in self.STRINGS:
with self.subTest(text=text):
try:
expected = text.encode(self.ENCODING, errors)
except UnicodeEncodeError:
with self.assertRaises(RuntimeError) as cm:
self.encode(text, errors)
errmsg = str(cm.exception)
self.assertRegex(errmsg, r"encode error: pos=[0-9]+, reason=")
else:
encoded = self.encode(text, errors)
self.assertEqual(encoded, expected)
def test_encode_strict(self):
self.check_encode_strings("strict")
def test_encode_surrogateescape(self):
self.check_encode_strings("surrogateescape")
def test_encode_surrogatepass(self):
try:
self.encode('', 'surrogatepass')
except ValueError as exc:
if str(exc) == 'unsupported error handler':
self.skipTest(f"{self.ENCODING!r} encoder doesn't support "
f"surrogatepass error handler")
else:
raise
self.check_encode_strings("surrogatepass")
def test_encode_unsupported_error_handler(self):
with self.assertRaises(ValueError) as cm:
self.encode('', 'backslashreplace')
self.assertEqual(str(cm.exception), 'unsupported error handler')
def decode(self, encoded, errors="strict"):
return _testcapi.DecodeLocaleEx(encoded, 0, errors)
def check_decode_strings(self, errors):
is_utf8 = (self.ENCODING == "utf-8")
if is_utf8:
encode_errors = 'surrogateescape'
else:
encode_errors = 'strict'
strings = list(self.BYTES_STRINGS)
for text in self.STRINGS:
try:
encoded = text.encode(self.ENCODING, encode_errors)
if encoded not in strings:
strings.append(encoded)
except UnicodeEncodeError:
encoded = None
if is_utf8:
encoded2 = text.encode(self.ENCODING, 'surrogatepass')
if encoded2 != encoded:
strings.append(encoded2)
for encoded in strings:
with self.subTest(encoded=encoded):
try:
expected = encoded.decode(self.ENCODING, errors)
except UnicodeDecodeError:
with self.assertRaises(RuntimeError) as cm:
self.decode(encoded, errors)
errmsg = str(cm.exception)
self.assertTrue(errmsg.startswith("decode error: "), errmsg)
else:
decoded = self.decode(encoded, errors)
self.assertEqual(decoded, expected)
def test_decode_strict(self):
self.check_decode_strings("strict")
def test_decode_surrogateescape(self):
self.check_decode_strings("surrogateescape")
def test_decode_surrogatepass(self):
try:
self.decode(b'', 'surrogatepass')
except ValueError as exc:
if str(exc) == 'unsupported error handler':
self.skipTest(f"{self.ENCODING!r} decoder doesn't support "
f"surrogatepass error handler")
else:
raise
self.check_decode_strings("surrogatepass")
def test_decode_unsupported_error_handler(self):
with self.assertRaises(ValueError) as cm:
self.decode(b'', 'backslashreplace')
self.assertEqual(str(cm.exception), 'unsupported error handler')
class Rot13Test(unittest.TestCase):
"""Test the educational ROT-13 codec."""
def test_encode(self):
ciphertext = codecs.encode("Caesar liked ciphers", 'rot-13')
self.assertEqual(ciphertext, 'Pnrfne yvxrq pvcuref')
def test_decode(self):
plaintext = codecs.decode('Rg gh, Oehgr?', 'rot-13')
self.assertEqual(plaintext, 'Et tu, Brute?')
def test_incremental_encode(self):
encoder = codecs.getincrementalencoder('rot-13')()
ciphertext = encoder.encode('ABBA nag Cheryl Baker')
self.assertEqual(ciphertext, 'NOON ant Purely Onxre')
def test_incremental_decode(self):
decoder = codecs.getincrementaldecoder('rot-13')()
plaintext = decoder.decode('terra Ares envy tha')
self.assertEqual(plaintext, 'green Nerf rail gun')
class Rot13UtilTest(unittest.TestCase):
"""Test the ROT-13 codec via rot13 function,
i.e. the user has done something like:
$ echo "Hello World" | python -m encodings.rot_13
"""
def test_rot13_func(self):
infile = io.StringIO('Gb or, be abg gb or, gung vf gur dhrfgvba')
outfile = io.StringIO()
encodings.rot_13.rot13(infile, outfile)
outfile.seek(0)
plain_text = outfile.read()
self.assertEqual(
plain_text,
'To be, or not to be, that is the question')
if __name__ == "__main__":
unittest.main()
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