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Name	Size	Permission
audiodata	[ DIR ]	drwxr-xr-x
certdata	[ DIR ]	drwxr-xr-x
cjkencodings	[ DIR ]	drwxr-xr-x
configdata	[ DIR ]	drwxr-xr-x
crashers	[ DIR ]	drwxr-xr-x
data	[ DIR ]	drwxr-xr-x
decimaltestdata	[ DIR ]	drwxr-xr-x
dtracedata	[ DIR ]	drwxr-xr-x
encoded_modules	[ DIR ]	drwxr-xr-x
imghdrdata	[ DIR ]	drwxr-xr-x
leakers	[ DIR ]	drwxr-xr-x
libregrtest	[ DIR ]	drwxr-xr-x
regrtestdata	[ DIR ]	drwxr-xr-x
sndhdrdata	[ DIR ]	drwxr-xr-x
subprocessdata	[ DIR ]	drwxr-xr-x
support	[ DIR ]	drwxr-xr-x
test_asyncio	[ DIR ]	drwxr-xr-x
test_capi	[ DIR ]	drwxr-xr-x
test_concurrent_futures	[ DIR ]	drwxr-xr-x
test_cppext	[ DIR ]	drwxr-xr-x
test_ctypes	[ DIR ]	drwxr-xr-x
test_dataclasses	[ DIR ]	drwxr-xr-x
test_doctest	[ DIR ]	drwxr-xr-x
test_email	[ DIR ]	drwxr-xr-x
test_future_stmt	[ DIR ]	drwxr-xr-x
test_gdb	[ DIR ]	drwxr-xr-x
test_import	[ DIR ]	drwxr-xr-x
test_importlib	[ DIR ]	drwxr-xr-x
test_inspect	[ DIR ]	drwxr-xr-x
test_json	[ DIR ]	drwxr-xr-x
test_lib2to3	[ DIR ]	drwxr-xr-x
test_module	[ DIR ]	drwxr-xr-x
test_multiprocessing_fork	[ DIR ]	drwxr-xr-x
test_multiprocessing_forkserve...	[ DIR ]	drwxr-xr-x
test_multiprocessing_spawn	[ DIR ]	drwxr-xr-x
test_peg_generator	[ DIR ]	drwxr-xr-x
test_pydoc	[ DIR ]	drwxr-xr-x
test_sqlite3	[ DIR ]	drwxr-xr-x
test_tkinter	[ DIR ]	drwxr-xr-x
test_tomllib	[ DIR ]	drwxr-xr-x
test_tools	[ DIR ]	drwxr-xr-x
test_ttk	[ DIR ]	drwxr-xr-x
test_unittest	[ DIR ]	drwxr-xr-x
test_warnings	[ DIR ]	drwxr-xr-x
test_zipfile	[ DIR ]	drwxr-xr-x
test_zoneinfo	[ DIR ]	drwxr-xr-x
tokenizedata	[ DIR ]	drwxr-xr-x
tracedmodules	[ DIR ]	drwxr-xr-x
typinganndata	[ DIR ]	drwxr-xr-x
wheeldata	[ DIR ]	drwxr-xr-x
xmltestdata	[ DIR ]	drwxr-xr-x
ziptestdata	[ DIR ]	drwxr-xr-x
Sine-1000Hz-300ms.aif	60.25 KB	-rw-r--r--
__init__.py	47 B	-rw-r--r--
__main__.py	67 B	-rw-r--r--
_test_atexit.py	3.61 KB	-rw-r--r--
_test_eintr.py	17.75 KB	-rw-r--r--
_test_embed_set_config.py	8.64 KB	-rw-r--r--
_test_embed_structseq.py	1.99 KB	-rw-r--r--
_test_multiprocessing.py	206.66 KB	-rw-r--r--
_test_venv_multiprocessing.py	796 B	-rw-r--r--
archiver_tests.py	6.1 KB	-rw-r--r--
audiotest.au	27.48 KB	-rw-r--r--
audiotests.py	12.13 KB	-rw-r--r--
audit-tests.py	13.19 KB	-rw-r--r--
autotest.py	214 B	-rw-r--r--
badsyntax_pep3120.py	14 B	-rw-r--r--
bisect_cmd.py	5.34 KB	-rwxr-xr-x
clinic.test.c	138.59 KB	-rw-r--r--
cmath_testcases.txt	141.2 KB	-rw-r--r--
curses_tests.py	1.21 KB	-rwxr-xr-x
datetimetester.py	260.28 KB	-rw-r--r--
dis_module.py	76 B	-rw-r--r--
empty.vbs	70 B	-rw-r--r--
exception_hierarchy.txt	2.33 KB	-rw-r--r--
floating_points.txt	15.92 KB	-rw-r--r--
fork_wait.py	2.29 KB	-rw-r--r--
formatfloat_testcases.txt	7.45 KB	-rw-r--r--
ieee754.txt	3.15 KB	-rw-r--r--
levenshtein_examples.json	406.44 KB	-rw-r--r--
list_tests.py	16.64 KB	-rw-r--r--
lock_tests.py	35.48 KB	-rw-r--r--
mailcap.txt	1.24 KB	-rw-r--r--
mapping_tests.py	21.87 KB	-rw-r--r--
math_testcases.txt	23.19 KB	-rw-r--r--
memory_watchdog.py	711 B	-rw-r--r--
mime.types	47.37 KB	-rw-r--r--
mock_socket.py	3.69 KB	-rw-r--r--
mp_fork_bomb.py	448 B	-rw-r--r--
mp_preload.py	351 B	-rw-r--r--
multibytecodec_support.py	14.19 KB	-rw-r--r--
pickletester.py	143.84 KB	-rw-r--r--
profilee.py	2.97 KB	-rw-r--r--
pstats.pck	65.05 KB	-rw-r--r--
pyclbr_input.py	648 B	-rw-r--r--
pythoninfo.py	28.32 KB	-rw-r--r--
randv2_32.pck	7.34 KB	-rw-r--r--
randv2_64.pck	7.19 KB	-rw-r--r--
randv3.pck	7.82 KB	-rw-r--r--
re_tests.py	25.93 KB	-rwxr-xr-x
recursion.tar	516 B	-rw-r--r--
regrtest.py	1.27 KB	-rwxr-xr-x
relimport.py	27 B	-rw-r--r--
reperf.py	538 B	-rw-r--r--
seq_tests.py	14.96 KB	-rw-r--r--
signalinterproctester.py	3.12 KB	-rw-r--r--
ssl_servers.py	7.12 KB	-rw-r--r--
ssltests.py	1.03 KB	-rw-r--r--
string_tests.py	71.24 KB	-rw-r--r--
test___all__.py	5.04 KB	-rw-r--r--
test__locale.py	8.09 KB	-rw-r--r--
test__opcode.py	4.14 KB	-rw-r--r--
test__osx_support.py	13.62 KB	-rw-r--r--
test__xxinterpchannels.py	52.19 KB	-rw-r--r--
test__xxsubinterpreters.py	27.5 KB	-rw-r--r--
test_abc.py	23.81 KB	-rw-r--r--
test_abstract_numbers.py	5.81 KB	-rw-r--r--
test_aifc.py	17.84 KB	-rw-r--r--
test_argparse.py	189 KB	-rw-r--r--
test_array.py	55.27 KB	-rwxr-xr-x
test_asdl_parser.py	4.44 KB	-rw-r--r--
test_ast.py	140.71 KB	-rw-r--r--
test_asyncgen.py	47.39 KB	-rw-r--r--
test_atexit.py	3.2 KB	-rw-r--r--
test_audioop.py	28.32 KB	-rw-r--r--
test_audit.py	8.6 KB	-rw-r--r--
test_augassign.py	7.68 KB	-rw-r--r--
test_base64.py	35.05 KB	-rw-r--r--
test_baseexception.py	7.77 KB	-rw-r--r--
test_bdb.py	43.75 KB	-rw-r--r--
test_bigaddrspace.py	2.83 KB	-rw-r--r--
test_bigmem.py	45.01 KB	-rw-r--r--
test_binascii.py	19.35 KB	-rw-r--r--
test_binop.py	14.14 KB	-rw-r--r--
test_bisect.py	16.63 KB	-rw-r--r--
test_bool.py	14.25 KB	-rw-r--r--
test_buffer.py	171.31 KB	-rw-r--r--
test_bufio.py	2.56 KB	-rw-r--r--
test_builtin.py	95.14 KB	-rw-r--r--
test_bytes.py	80.57 KB	-rw-r--r--
test_bz2.py	42.61 KB	-rw-r--r--
test_c_locale_coercion.py	20.99 KB	-rw-r--r--
test_calendar.py	51.25 KB	-rw-r--r--
test_call.py	35.21 KB	-rw-r--r--
test_cgi.py	22.27 KB	-rw-r--r--
test_cgitb.py	2.62 KB	-rw-r--r--
test_charmapcodec.py	1.77 KB	-rw-r--r--
test_class.py	19.77 KB	-rw-r--r--
test_clinic.py	83.96 KB	-rw-r--r--
test_cmath.py	23.55 KB	-rw-r--r--
test_cmd.py	6.49 KB	-rw-r--r--
test_cmd_line.py	39.51 KB	-rw-r--r--
test_cmd_line_script.py	34.93 KB	-rw-r--r--
test_code.py	25.7 KB	-rw-r--r--
test_code_module.py	5.53 KB	-rw-r--r--
test_codeccallbacks.py	47.43 KB	-rw-r--r--
test_codecencodings_cn.py	3.86 KB	-rw-r--r--
test_codecencodings_hk.py	701 B	-rw-r--r--
test_codecencodings_iso2022.py	3.65 KB	-rw-r--r--
test_codecencodings_jp.py	4.79 KB	-rw-r--r--
test_codecencodings_kr.py	2.96 KB	-rw-r--r--
test_codecencodings_tw.py	681 B	-rw-r--r--
test_codecmaps_cn.py	746 B	-rw-r--r--
test_codecmaps_hk.py	386 B	-rw-r--r--
test_codecmaps_jp.py	1.7 KB	-rw-r--r--
test_codecmaps_kr.py	1.16 KB	-rw-r--r--
test_codecmaps_tw.py	705 B	-rw-r--r--
test_codecs.py	136.12 KB	-rw-r--r--
test_codeop.py	8.68 KB	-rw-r--r--
test_collections.py	93.47 KB	-rw-r--r--
test_colorsys.py	4.27 KB	-rw-r--r--
test_compare.py	17.46 KB	-rw-r--r--
test_compile.py	78.68 KB	-rw-r--r--
test_compileall.py	48.27 KB	-rw-r--r--
test_compiler_assemble.py	2.46 KB	-rw-r--r--
test_compiler_codegen.py	1.69 KB	-rw-r--r--
test_complex.py	35.37 KB	-rw-r--r--
test_configparser.py	85.34 KB	-rw-r--r--
test_contains.py	3.35 KB	-rw-r--r--
test_context.py	30.78 KB	-rw-r--r--
test_contextlib.py	43.12 KB	-rw-r--r--
test_contextlib_async.py	23.99 KB	-rw-r--r--
test_copy.py	26.52 KB	-rw-r--r--
test_copyreg.py	4.36 KB	-rw-r--r--
test_coroutines.py	67.47 KB	-rw-r--r--
test_cprofile.py	7.36 KB	-rw-r--r--
test_crashers.py	1.17 KB	-rw-r--r--
test_crypt.py	4.19 KB	-rw-r--r--
test_csv.py	61.27 KB	-rw-r--r--
test_curses.py	49.54 KB	-rw-r--r--
test_datetime.py	2.53 KB	-rw-r--r--
test_dbm.py	6.83 KB	-rw-r--r--
test_dbm_dumb.py	11.08 KB	-rw-r--r--
test_dbm_gnu.py	7.24 KB	-rw-r--r--
test_dbm_ndbm.py	5.91 KB	-rw-r--r--
test_decimal.py	216.13 KB	-rw-r--r--
test_decorators.py	14.63 KB	-rw-r--r--
test_defaultdict.py	6.1 KB	-rw-r--r--
test_deque.py	33.16 KB	-rw-r--r--
test_descr.py	196.13 KB	-rw-r--r--
test_descrtut.py	10.98 KB	-rw-r--r--
test_devpoll.py	4.44 KB	-rw-r--r--
test_dict.py	50.92 KB	-rw-r--r--
test_dict_version.py	6.1 KB	-rw-r--r--
test_dictcomps.py	5.15 KB	-rw-r--r--
test_dictviews.py	14.82 KB	-rw-r--r--
test_difflib.py	21.47 KB	-rw-r--r--
test_difflib_expect.html	100.85 KB	-rw-r--r--
test_dis.py	83 KB	-rw-r--r--
test_docxmlrpc.py	9.1 KB	-rw-r--r--
test_dtrace.py	7.98 KB	-rw-r--r--
test_dynamic.py	6 KB	-rw-r--r--
test_dynamicclassattribute.py	9.57 KB	-rw-r--r--
test_eintr.py	627 B	-rw-r--r--
test_embed.py	69.41 KB	-rw-r--r--
test_ensurepip.py	11.49 KB	-rw-r--r--
test_enum.py	186.78 KB	-rw-r--r--
test_enumerate.py	9.14 KB	-rw-r--r--
test_eof.py	3.1 KB	-rw-r--r--
test_epoll.py	9.4 KB	-rw-r--r--
test_errno.py	1.04 KB	-rw-r--r--
test_except_star.py	38.25 KB	-rw-r--r--
test_exception_group.py	34.03 KB	-rw-r--r--
test_exception_hierarchy.py	7.54 KB	-rw-r--r--
test_exception_variations.py	13.74 KB	-rw-r--r--
test_exceptions.py	76.46 KB	-rw-r--r--
test_extcall.py	14.69 KB	-rw-r--r--
test_faulthandler.py	30.31 KB	-rw-r--r--
test_fcntl.py	7.76 KB	-rw-r--r--
test_file.py	11.78 KB	-rw-r--r--
test_file_eintr.py	10.74 KB	-rw-r--r--
test_filecmp.py	10.33 KB	-rw-r--r--
test_fileinput.py	37.85 KB	-rw-r--r--
test_fileio.py	19.98 KB	-rw-r--r--
test_fileutils.py	951 B	-rw-r--r--
test_finalization.py	14.66 KB	-rw-r--r--
test_float.py	64.76 KB	-rw-r--r--
test_flufl.py	1.53 KB	-rw-r--r--
test_fnmatch.py	10.68 KB	-rw-r--r--
test_fork1.py	3.3 KB	-rw-r--r--
test_format.py	28.44 KB	-rw-r--r--
test_fractions.py	52.53 KB	-rw-r--r--
test_frame.py	14.04 KB	-rw-r--r--
test_frozen.py	2.2 KB	-rw-r--r--
test_fstring.py	64.71 KB	-rw-r--r--
test_ftplib.py	41.94 KB	-rw-r--r--
test_funcattrs.py	15.57 KB	-rw-r--r--
test_functools.py	109.31 KB	-rw-r--r--
test_gc.py	47.71 KB	-rw-r--r--
test_generator_stop.py	943 B	-rw-r--r--
test_generators.py	66.13 KB	-rw-r--r--
test_genericalias.py	17.78 KB	-rw-r--r--
test_genericclass.py	9.44 KB	-rw-r--r--
test_genericpath.py	22.29 KB	-rw-r--r--
test_genexps.py	7.3 KB	-rw-r--r--
test_getopt.py	6.6 KB	-rw-r--r--
test_getpass.py	6.37 KB	-rw-r--r--
test_getpath.py	44.36 KB	-rw-r--r--
test_gettext.py	35.67 KB	-rw-r--r--
test_glob.py	17.19 KB	-rw-r--r--
test_global.py	1.2 KB	-rw-r--r--
test_grammar.py	65.97 KB	-rw-r--r--
test_graphlib.py	8.31 KB	-rw-r--r--
test_grp.py	3.67 KB	-rw-r--r--
test_gzip.py	40.94 KB	-rw-r--r--
test_hash.py	12.11 KB	-rw-r--r--
test_hashlib.py	46.71 KB	-rw-r--r--
test_heapq.py	16.42 KB	-rw-r--r--
test_hmac.py	26.06 KB	-rw-r--r--
test_html.py	4.23 KB	-rw-r--r--
test_htmlparser.py	33.37 KB	-rw-r--r--
test_http_cookiejar.py	81.57 KB	-rw-r--r--
test_http_cookies.py	18.7 KB	-rw-r--r--
test_httplib.py	96.14 KB	-rw-r--r--
test_httpservers.py	56.43 KB	-rw-r--r--
test_idle.py	831 B	-rw-r--r--
test_imaplib.py	41.69 KB	-rw-r--r--
test_imghdr.py	4.81 KB	-rw-r--r--
test_index.py	8.37 KB	-rw-r--r--
test_int.py	33.34 KB	-rw-r--r--
test_int_literal.py	6.89 KB	-rw-r--r--
test_interpreters.py	32.11 KB	-rw-r--r--
test_io.py	182.76 KB	-rw-r--r--
test_ioctl.py	3.24 KB	-rw-r--r--
test_ipaddress.py	119.17 KB	-rw-r--r--
test_isinstance.py	12.95 KB	-rw-r--r--
test_iter.py	36.77 KB	-rw-r--r--
test_iterlen.py	7.1 KB	-rw-r--r--
test_itertools.py	106.61 KB	-rw-r--r--
test_keyword.py	2 KB	-rw-r--r--
test_keywordonlyarg.py	6.89 KB	-rw-r--r--
test_kqueue.py	9.36 KB	-rw-r--r--
test_largefile.py	10.17 KB	-rw-r--r--
test_launcher.py	27.23 KB	-rw-r--r--
test_linecache.py	11.04 KB	-rw-r--r--
test_list.py	8.93 KB	-rw-r--r--
test_listcomps.py	20.71 KB	-rw-r--r--
test_lltrace.py	3.71 KB	-rw-r--r--
test_locale.py	24.43 KB	-rw-r--r--
test_logging.py	241.62 KB	-rw-r--r--
test_long.py	63.33 KB	-rw-r--r--
test_longexp.py	233 B	-rw-r--r--
test_lzma.py	92.65 KB	-rw-r--r--
test_mailbox.py	93.91 KB	-rw-r--r--
test_mailcap.py	11.48 KB	-rw-r--r--
test_marshal.py	23.15 KB	-rw-r--r--
test_math.py	107.6 KB	-rw-r--r--
test_math_property.py	1.15 KB	-rw-r--r--
test_memoryio.py	32.65 KB	-rw-r--r--
test_memoryview.py	21.76 KB	-rw-r--r--
test_metaclass.py	6.19 KB	-rw-r--r--
test_mimetypes.py	15.28 KB	-rw-r--r--
test_minidom.py	68.42 KB	-rw-r--r--
test_mmap.py	38.56 KB	-rw-r--r--
test_modulefinder.py	12.21 KB	-rw-r--r--
test_monitoring.py	55.76 KB	-rw-r--r--
test_msilib.py	5.52 KB	-rw-r--r--
test_multibytecodec.py	15.79 KB	-rw-r--r--
test_multiprocessing_main_hand...	11.48 KB	-rw-r--r--
test_named_expressions.py	29.62 KB	-rw-r--r--
test_netrc.py	11.86 KB	-rw-r--r--
test_nis.py	1.25 KB	-rw-r--r--
test_nntplib.py	62.7 KB	-rw-r--r--
test_ntpath.py	52.48 KB	-rw-r--r--
test_numeric_tower.py	8 KB	-rw-r--r--
test_opcache.py	10.89 KB	-rw-r--r--
test_opcodes.py	3.62 KB	-rw-r--r--
test_openpty.py	600 B	-rw-r--r--
test_operator.py	26.72 KB	-rw-r--r--
test_optparse.py	61.02 KB	-rw-r--r--
test_ordered_dict.py	35.62 KB	-rw-r--r--
test_os.py	179.95 KB	-rw-r--r--
test_ossaudiodev.py	7.27 KB	-rw-r--r--
test_osx_env.py	1.31 KB	-rw-r--r--
test_pathlib.py	137.81 KB	-rw-r--r--
test_patma.py	86.03 KB	-rw-r--r--
test_pdb.py	86.53 KB	-rw-r--r--
test_peepholer.py	40.6 KB	-rw-r--r--
test_pep646_syntax.py	7.79 KB	-rw-r--r--
test_perf_profiler.py	11.27 KB	-rw-r--r--
test_perfmaps.py	685 B	-rw-r--r--
test_pickle.py	20.75 KB	-rw-r--r--
test_picklebuffer.py	4.99 KB	-rw-r--r--
test_pickletools.py	4.13 KB	-rw-r--r--
test_pipes.py	6.79 KB	-rw-r--r--
test_pkg.py	9.59 KB	-rw-r--r--
test_pkgutil.py	22.36 KB	-rw-r--r--
test_platform.py	21.59 KB	-rw-r--r--
test_plistlib.py	41.25 KB	-rw-r--r--
test_poll.py	7.39 KB	-rw-r--r--
test_popen.py	2.11 KB	-rw-r--r--
test_poplib.py	17.05 KB	-rw-r--r--
test_positional_only_arg.py	18.44 KB	-rw-r--r--
test_posix.py	95.07 KB	-rw-r--r--
test_posixpath.py	33.75 KB	-rw-r--r--
test_pow.py	6.38 KB	-rw-r--r--
test_pprint.py	50.59 KB	-rw-r--r--
test_print.py	7.72 KB	-rw-r--r--
test_profile.py	8.69 KB	-rw-r--r--
test_property.py	18.03 KB	-rw-r--r--
test_pstats.py	4.31 KB	-rw-r--r--
test_pty.py	16.18 KB	-rw-r--r--
test_pulldom.py	12.33 KB	-rw-r--r--
test_pwd.py	4.32 KB	-rw-r--r--
test_py_compile.py	11.93 KB	-rw-r--r--
test_pyclbr.py	10.15 KB	-rw-r--r--
test_pyexpat.py	29.35 KB	-rw-r--r--
test_queue.py	20.61 KB	-rw-r--r--
test_quopri.py	7.87 KB	-rw-r--r--
test_raise.py	13.44 KB	-rw-r--r--
test_random.py	56.69 KB	-rw-r--r--
test_range.py	26.53 KB	-rw-r--r--
test_re.py	131.37 KB	-rw-r--r--
test_readline.py	12.76 KB	-rw-r--r--
test_regrtest.py	90.02 KB	-rw-r--r--
test_repl.py	4.99 KB	-rw-r--r--
test_reprlib.py	27.77 KB	-rw-r--r--
test_resource.py	7.12 KB	-rw-r--r--
test_richcmp.py	11.95 KB	-rw-r--r--
test_rlcompleter.py	7.4 KB	-rw-r--r--
test_robotparser.py	11.02 KB	-rw-r--r--
test_runpy.py	33.95 KB	-rw-r--r--
test_sax.py	54.63 KB	-rw-r--r--
test_sched.py	7.38 KB	-rw-r--r--
test_scope.py	21.21 KB	-rw-r--r--
test_script_helper.py	5.82 KB	-rw-r--r--
test_secrets.py	4.28 KB	-rw-r--r--
test_select.py	3.42 KB	-rw-r--r--
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Code Editor : test_codeccallbacks.py

import codecs
import html.entities
import itertools
import sys
import unicodedata
import unittest

class PosReturn:
    # this can be used for configurable callbacks

def __init__(self):
        self.pos = 0

def handle(self, exc):
        oldpos = self.pos
        realpos = oldpos
        if realpos<0:
            realpos = len(exc.object) + realpos
        # if we don't advance this time, terminate on the next call
        # otherwise we'd get an endless loop
        if realpos <= exc.start:
            self.pos = len(exc.object)
        return ("<?>", oldpos)

class RepeatedPosReturn:
    def __init__(self, repl="<?>"):
        self.repl = repl
        self.pos = 0
        self.count = 0

def handle(self, exc):
        if self.count > 0:
            self.count -= 1
            return (self.repl, self.pos)
        return (self.repl, exc.end)

# A UnicodeEncodeError object with a bad start attribute
class BadStartUnicodeEncodeError(UnicodeEncodeError):
    def __init__(self):
        UnicodeEncodeError.__init__(self, "ascii", "", 0, 1, "bad")
        self.start = []

# A UnicodeEncodeError object with a bad object attribute
class BadObjectUnicodeEncodeError(UnicodeEncodeError):
    def __init__(self):
        UnicodeEncodeError.__init__(self, "ascii", "", 0, 1, "bad")
        self.object = []

# A UnicodeDecodeError object without an end attribute
class NoEndUnicodeDecodeError(UnicodeDecodeError):
    def __init__(self):
        UnicodeDecodeError.__init__(self, "ascii", bytearray(b""), 0, 1, "bad")
        del self.end

# A UnicodeDecodeError object with a bad object attribute
class BadObjectUnicodeDecodeError(UnicodeDecodeError):
    def __init__(self):
        UnicodeDecodeError.__init__(self, "ascii", bytearray(b""), 0, 1, "bad")
        self.object = []

# A UnicodeTranslateError object without a start attribute
class NoStartUnicodeTranslateError(UnicodeTranslateError):
    def __init__(self):
        UnicodeTranslateError.__init__(self, "", 0, 1, "bad")
        del self.start

# A UnicodeTranslateError object without an end attribute
class NoEndUnicodeTranslateError(UnicodeTranslateError):
    def __init__(self):
        UnicodeTranslateError.__init__(self,  "", 0, 1, "bad")
        del self.end

# A UnicodeTranslateError object without an object attribute
class NoObjectUnicodeTranslateError(UnicodeTranslateError):
    def __init__(self):
        UnicodeTranslateError.__init__(self, "", 0, 1, "bad")
        del self.object

class CodecCallbackTest(unittest.TestCase):

def test_xmlcharrefreplace(self):
        # replace unencodable characters which numeric character entities.
        # For ascii, latin-1 and charmaps this is completely implemented
        # in C and should be reasonably fast.
        s = "\u30b9\u30d1\u30e2 \xe4nd eggs"
        self.assertEqual(
            s.encode("ascii", "xmlcharrefreplace"),
            b"&#12473;&#12497;&#12514; &#228;nd eggs"
        )
        self.assertEqual(
            s.encode("latin-1", "xmlcharrefreplace"),
            b"&#12473;&#12497;&#12514; \xe4nd eggs"
        )

def test_xmlcharnamereplace(self):
        # This time use a named character entity for unencodable
        # characters, if one is available.

def xmlcharnamereplace(exc):
            if not isinstance(exc, UnicodeEncodeError):
                raise TypeError("don't know how to handle %r" % exc)
            l = []
            for c in exc.object[exc.start:exc.end]:
                try:
                    l.append("&%s;" % html.entities.codepoint2name[ord(c)])
                except KeyError:
                    l.append("&#%d;" % ord(c))
            return ("".join(l), exc.end)

codecs.register_error(
            "test.xmlcharnamereplace", xmlcharnamereplace)

sin = "\xab\u211c\xbb = \u2329\u1234\u20ac\u232a"
        sout = b"&laquo;&real;&raquo; = &lang;&#4660;&euro;&rang;"
        self.assertEqual(sin.encode("ascii", "test.xmlcharnamereplace"), sout)
        sout = b"\xab&real;\xbb = &lang;&#4660;&euro;&rang;"
        self.assertEqual(sin.encode("latin-1", "test.xmlcharnamereplace"), sout)
        sout = b"\xab&real;\xbb = &lang;&#4660;\xa4&rang;"
        self.assertEqual(sin.encode("iso-8859-15", "test.xmlcharnamereplace"), sout)

def test_uninamereplace(self):
        # We're using the names from the unicode database this time,
        # and we're doing "syntax highlighting" here, i.e. we include
        # the replaced text in ANSI escape sequences. For this it is
        # useful that the error handler is not called for every single
        # unencodable character, but for a complete sequence of
        # unencodable characters, otherwise we would output many
        # unnecessary escape sequences.

def uninamereplace(exc):
            if not isinstance(exc, UnicodeEncodeError):
                raise TypeError("don't know how to handle %r" % exc)
            l = []
            for c in exc.object[exc.start:exc.end]:
                l.append(unicodedata.name(c, "0x%x" % ord(c)))
            return ("\033[1m%s\033[0m" % ", ".join(l), exc.end)

codecs.register_error(
            "test.uninamereplace", uninamereplace)

sin = "\xac\u1234\u20ac\u8000"
        sout = b"\033[1mNOT SIGN, ETHIOPIC SYLLABLE SEE, EURO SIGN, CJK UNIFIED IDEOGRAPH-8000\033[0m"
        self.assertEqual(sin.encode("ascii", "test.uninamereplace"), sout)

sout = b"\xac\033[1mETHIOPIC SYLLABLE SEE, EURO SIGN, CJK UNIFIED IDEOGRAPH-8000\033[0m"
        self.assertEqual(sin.encode("latin-1", "test.uninamereplace"), sout)

sout = b"\xac\033[1mETHIOPIC SYLLABLE SEE\033[0m\xa4\033[1mCJK UNIFIED IDEOGRAPH-8000\033[0m"
        self.assertEqual(sin.encode("iso-8859-15", "test.uninamereplace"), sout)

def test_backslashescape(self):
        # Does the same as the "unicode-escape" encoding, but with different
        # base encodings.
        sin = "a\xac\u1234\u20ac\u8000\U0010ffff"
        sout = b"a\\xac\\u1234\\u20ac\\u8000\\U0010ffff"
        self.assertEqual(sin.encode("ascii", "backslashreplace"), sout)

sout = b"a\xac\\u1234\\u20ac\\u8000\\U0010ffff"
        self.assertEqual(sin.encode("latin-1", "backslashreplace"), sout)

sout = b"a\xac\\u1234\xa4\\u8000\\U0010ffff"
        self.assertEqual(sin.encode("iso-8859-15", "backslashreplace"), sout)

def test_nameescape(self):
        # Does the same as backslashescape, but prefers ``\N{...}`` escape
        # sequences.
        sin = "a\xac\u1234\u20ac\u8000\U0010ffff"
        sout = (b'a\\N{NOT SIGN}\\N{ETHIOPIC SYLLABLE SEE}\\N{EURO SIGN}'
                b'\\N{CJK UNIFIED IDEOGRAPH-8000}\\U0010ffff')
        self.assertEqual(sin.encode("ascii", "namereplace"), sout)

sout = (b'a\xac\\N{ETHIOPIC SYLLABLE SEE}\\N{EURO SIGN}'
                b'\\N{CJK UNIFIED IDEOGRAPH-8000}\\U0010ffff')
        self.assertEqual(sin.encode("latin-1", "namereplace"), sout)

sout = (b'a\xac\\N{ETHIOPIC SYLLABLE SEE}\xa4'
                b'\\N{CJK UNIFIED IDEOGRAPH-8000}\\U0010ffff')
        self.assertEqual(sin.encode("iso-8859-15", "namereplace"), sout)

def test_decoding_callbacks(self):
        # This is a test for a decoding callback handler
        # that allows the decoding of the invalid sequence
        # "\xc0\x80" and returns "\x00" instead of raising an error.
        # All other illegal sequences will be handled strictly.
        def relaxedutf8(exc):
            if not isinstance(exc, UnicodeDecodeError):
                raise TypeError("don't know how to handle %r" % exc)
            if exc.object[exc.start:exc.start+2] == b"\xc0\x80":
                return ("\x00", exc.start+2) # retry after two bytes
            else:
                raise exc

codecs.register_error("test.relaxedutf8", relaxedutf8)

# all the "\xc0\x80" will be decoded to "\x00"
        sin = b"a\x00b\xc0\x80c\xc3\xbc\xc0\x80\xc0\x80"
        sout = "a\x00b\x00c\xfc\x00\x00"
        self.assertEqual(sin.decode("utf-8", "test.relaxedutf8"), sout)

# "\xc0\x81" is not valid and a UnicodeDecodeError will be raised
        sin = b"\xc0\x80\xc0\x81"
        self.assertRaises(UnicodeDecodeError, sin.decode,
                          "utf-8", "test.relaxedutf8")

def test_charmapencode(self):
        # For charmap encodings the replacement string will be
        # mapped through the encoding again. This means, that
        # to be able to use e.g. the "replace" handler, the
        # charmap has to have a mapping for "?".
        charmap = dict((ord(c), bytes(2*c.upper(), 'ascii')) for c in "abcdefgh")
        sin = "abc"
        sout = b"AABBCC"
        self.assertEqual(codecs.charmap_encode(sin, "strict", charmap)[0], sout)

sin = "abcA"
        self.assertRaises(UnicodeError, codecs.charmap_encode, sin, "strict", charmap)

charmap[ord("?")] = b"XYZ"
        sin = "abcDEF"
        sout = b"AABBCCXYZXYZXYZ"
        self.assertEqual(codecs.charmap_encode(sin, "replace", charmap)[0], sout)

charmap[ord("?")] = "XYZ" # wrong type in mapping
        self.assertRaises(TypeError, codecs.charmap_encode, sin, "replace", charmap)

def test_callbacks(self):
        def handler1(exc):
            r = range(exc.start, exc.end)
            if isinstance(exc, UnicodeEncodeError):
                l = ["<%d>" % ord(exc.object[pos]) for pos in r]
            elif isinstance(exc, UnicodeDecodeError):
                l = ["<%d>" % exc.object[pos] for pos in r]
            else:
                raise TypeError("don't know how to handle %r" % exc)
            return ("[%s]" % "".join(l), exc.end)

codecs.register_error("test.handler1", handler1)

def handler2(exc):
            if not isinstance(exc, UnicodeDecodeError):
                raise TypeError("don't know how to handle %r" % exc)
            l = ["<%d>" % exc.object[pos] for pos in range(exc.start, exc.end)]
            return ("[%s]" % "".join(l), exc.end+1) # skip one character

codecs.register_error("test.handler2", handler2)

s = b"\x00\x81\x7f\x80\xff"

self.assertEqual(
            s.decode("ascii", "test.handler1"),
            "\x00[<129>]\x7f[<128>][<255>]"
        )
        self.assertEqual(
            s.decode("ascii", "test.handler2"),
            "\x00[<129>][<128>]"
        )

self.assertEqual(
            b"\\u3042\\u3xxx".decode("unicode-escape", "test.handler1"),
            "\u3042[<92><117><51>]xxx"
        )

self.assertEqual(
            b"\\u3042\\u3xx".decode("unicode-escape", "test.handler1"),
            "\u3042[<92><117><51>]xx"
        )

self.assertEqual(
            codecs.charmap_decode(b"abc", "test.handler1", {ord("a"): "z"})[0],
            "z[<98>][<99>]"
        )

self.assertEqual(
            "g\xfc\xdfrk".encode("ascii", "test.handler1"),
            b"g[<252><223>]rk"
        )

self.assertEqual(
            "g\xfc\xdf".encode("ascii", "test.handler1"),
            b"g[<252><223>]"
        )

def test_longstrings(self):
        # test long strings to check for memory overflow problems
        errors = [ "strict", "ignore", "replace", "xmlcharrefreplace",
                   "backslashreplace", "namereplace"]
        # register the handlers under different names,
        # to prevent the codec from recognizing the name
        for err in errors:
            codecs.register_error("test." + err, codecs.lookup_error(err))
        l = 1000
        errors += [ "test." + err for err in errors ]
        for uni in [ s*l for s in ("x", "\u3042", "a\xe4") ]:
            for enc in ("ascii", "latin-1", "iso-8859-1", "iso-8859-15",
                        "utf-8", "utf-7", "utf-16", "utf-32"):
                for err in errors:
                    try:
                        uni.encode(enc, err)
                    except UnicodeError:
                        pass

def check_exceptionobjectargs(self, exctype, args, msg):
        # Test UnicodeError subclasses: construction, attribute assignment and __str__ conversion
        # check with one missing argument
        self.assertRaises(TypeError, exctype, *args[:-1])
        # check with one argument too much
        self.assertRaises(TypeError, exctype, *(args + ["too much"]))
        # check with one argument of the wrong type
        wrongargs = [ "spam", b"eggs", b"spam", 42, 1.0, None ]
        for i in range(len(args)):
            for wrongarg in wrongargs:
                if type(wrongarg) is type(args[i]):
                    continue
                # build argument array
                callargs = []
                for j in range(len(args)):
                    if i==j:
                        callargs.append(wrongarg)
                    else:
                        callargs.append(args[i])
                self.assertRaises(TypeError, exctype, *callargs)

# check with the correct number and type of arguments
        exc = exctype(*args)
        self.assertEqual(str(exc), msg)

def test_unicodeencodeerror(self):
        self.check_exceptionobjectargs(
            UnicodeEncodeError,
            ["ascii", "g\xfcrk", 1, 2, "ouch"],
            "'ascii' codec can't encode character '\\xfc' in position 1: ouch"
        )
        self.check_exceptionobjectargs(
            UnicodeEncodeError,
            ["ascii", "g\xfcrk", 1, 4, "ouch"],
            "'ascii' codec can't encode characters in position 1-3: ouch"
        )
        self.check_exceptionobjectargs(
            UnicodeEncodeError,
            ["ascii", "\xfcx", 0, 1, "ouch"],
            "'ascii' codec can't encode character '\\xfc' in position 0: ouch"
        )
        self.check_exceptionobjectargs(
            UnicodeEncodeError,
            ["ascii", "\u0100x", 0, 1, "ouch"],
            "'ascii' codec can't encode character '\\u0100' in position 0: ouch"
        )
        self.check_exceptionobjectargs(
            UnicodeEncodeError,
            ["ascii", "\uffffx", 0, 1, "ouch"],
            "'ascii' codec can't encode character '\\uffff' in position 0: ouch"
        )
        self.check_exceptionobjectargs(
            UnicodeEncodeError,
            ["ascii", "\U00010000x", 0, 1, "ouch"],
            "'ascii' codec can't encode character '\\U00010000' in position 0: ouch"
        )

def test_unicodedecodeerror(self):
        self.check_exceptionobjectargs(
            UnicodeDecodeError,
            ["ascii", bytearray(b"g\xfcrk"), 1, 2, "ouch"],
            "'ascii' codec can't decode byte 0xfc in position 1: ouch"
        )
        self.check_exceptionobjectargs(
            UnicodeDecodeError,
            ["ascii", bytearray(b"g\xfcrk"), 1, 3, "ouch"],
            "'ascii' codec can't decode bytes in position 1-2: ouch"
        )

def test_unicodetranslateerror(self):
        self.check_exceptionobjectargs(
            UnicodeTranslateError,
            ["g\xfcrk", 1, 2, "ouch"],
            "can't translate character '\\xfc' in position 1: ouch"
        )
        self.check_exceptionobjectargs(
            UnicodeTranslateError,
            ["g\u0100rk", 1, 2, "ouch"],
            "can't translate character '\\u0100' in position 1: ouch"
        )
        self.check_exceptionobjectargs(
            UnicodeTranslateError,
            ["g\uffffrk", 1, 2, "ouch"],
            "can't translate character '\\uffff' in position 1: ouch"
        )
        self.check_exceptionobjectargs(
            UnicodeTranslateError,
            ["g\U00010000rk", 1, 2, "ouch"],
            "can't translate character '\\U00010000' in position 1: ouch"
        )
        self.check_exceptionobjectargs(
            UnicodeTranslateError,
            ["g\xfcrk", 1, 3, "ouch"],
            "can't translate characters in position 1-2: ouch"
        )

def test_badandgoodstrictexceptions(self):
        # "strict" complains about a non-exception passed in
        self.assertRaises(
            TypeError,
            codecs.strict_errors,
            42
        )
        # "strict" complains about the wrong exception type
        self.assertRaises(
            Exception,
            codecs.strict_errors,
            Exception("ouch")
        )

# If the correct exception is passed in, "strict" raises it
        self.assertRaises(
            UnicodeEncodeError,
            codecs.strict_errors,
            UnicodeEncodeError("ascii", "\u3042", 0, 1, "ouch")
        )
        self.assertRaises(
            UnicodeDecodeError,
            codecs.strict_errors,
            UnicodeDecodeError("ascii", bytearray(b"\xff"), 0, 1, "ouch")
        )
        self.assertRaises(
            UnicodeTranslateError,
            codecs.strict_errors,
            UnicodeTranslateError("\u3042", 0, 1, "ouch")
        )

def test_badandgoodignoreexceptions(self):
        # "ignore" complains about a non-exception passed in
        self.assertRaises(
           TypeError,
           codecs.ignore_errors,
           42
        )
        # "ignore" complains about the wrong exception type
        self.assertRaises(
           TypeError,
           codecs.ignore_errors,
           UnicodeError("ouch")
        )
        # If the correct exception is passed in, "ignore" returns an empty replacement
        self.assertEqual(
            codecs.ignore_errors(
                UnicodeEncodeError("ascii", "a\u3042b", 1, 2, "ouch")),
            ("", 2)
        )
        self.assertEqual(
            codecs.ignore_errors(
                UnicodeDecodeError("ascii", bytearray(b"a\xffb"), 1, 2, "ouch")),
            ("", 2)
        )
        self.assertEqual(
            codecs.ignore_errors(
                UnicodeTranslateError("a\u3042b", 1, 2, "ouch")),
            ("", 2)
        )

def test_badandgoodreplaceexceptions(self):
        # "replace" complains about a non-exception passed in
        self.assertRaises(
           TypeError,
           codecs.replace_errors,
           42
        )
        # "replace" complains about the wrong exception type
        self.assertRaises(
           TypeError,
           codecs.replace_errors,
           UnicodeError("ouch")
        )
        self.assertRaises(
            TypeError,
            codecs.replace_errors,
            BadObjectUnicodeEncodeError()
        )
        self.assertRaises(
            TypeError,
            codecs.replace_errors,
            BadObjectUnicodeDecodeError()
        )
        # With the correct exception, "replace" returns an "?" or "\ufffd" replacement
        self.assertEqual(
            codecs.replace_errors(
                UnicodeEncodeError("ascii", "a\u3042b", 1, 2, "ouch")),
            ("?", 2)
        )
        self.assertEqual(
            codecs.replace_errors(
                UnicodeDecodeError("ascii", bytearray(b"a\xffb"), 1, 2, "ouch")),
            ("\ufffd", 2)
        )
        self.assertEqual(
            codecs.replace_errors(
                UnicodeTranslateError("a\u3042b", 1, 2, "ouch")),
            ("\ufffd", 2)
        )

def test_badandgoodxmlcharrefreplaceexceptions(self):
        # "xmlcharrefreplace" complains about a non-exception passed in
        self.assertRaises(
           TypeError,
           codecs.xmlcharrefreplace_errors,
           42
        )
        # "xmlcharrefreplace" complains about the wrong exception types
        self.assertRaises(
           TypeError,
           codecs.xmlcharrefreplace_errors,
           UnicodeError("ouch")
        )
        # "xmlcharrefreplace" can only be used for encoding
        self.assertRaises(
            TypeError,
            codecs.xmlcharrefreplace_errors,
            UnicodeDecodeError("ascii", bytearray(b"\xff"), 0, 1, "ouch")
        )
        self.assertRaises(
            TypeError,
            codecs.xmlcharrefreplace_errors,
            UnicodeTranslateError("\u3042", 0, 1, "ouch")
        )
        # Use the correct exception
        cs = (0, 1, 9, 10, 99, 100, 999, 1000, 9999, 10000, 99999, 100000,
              999999, 1000000)
        cs += (0xd800, 0xdfff)
        s = "".join(chr(c) for c in cs)
        self.assertEqual(
            codecs.xmlcharrefreplace_errors(
                UnicodeEncodeError("ascii", "a" + s + "b",
                                   1, 1 + len(s), "ouch")
            ),
            ("".join("&#%d;" % c for c in cs), 1 + len(s))
        )

def test_badandgoodbackslashreplaceexceptions(self):
        # "backslashreplace" complains about a non-exception passed in
        self.assertRaises(
           TypeError,
           codecs.backslashreplace_errors,
           42
        )
        # "backslashreplace" complains about the wrong exception types
        self.assertRaises(
           TypeError,
           codecs.backslashreplace_errors,
           UnicodeError("ouch")
        )
        # Use the correct exception
        tests = [
            ("\u3042", "\\u3042"),
            ("\n", "\\x0a"),
            ("a", "\\x61"),
            ("\x00", "\\x00"),
            ("\xff", "\\xff"),
            ("\u0100", "\\u0100"),
            ("\uffff", "\\uffff"),
            ("\U00010000", "\\U00010000"),
            ("\U0010ffff", "\\U0010ffff"),
            # Lone surrogates
            ("\ud800", "\\ud800"),
            ("\udfff", "\\udfff"),
            ("\ud800\udfff", "\\ud800\\udfff"),
        ]
        for s, r in tests:
            with self.subTest(str=s):
                self.assertEqual(
                    codecs.backslashreplace_errors(
                        UnicodeEncodeError("ascii", "a" + s + "b",
                                           1, 1 + len(s), "ouch")),
                    (r, 1 + len(s))
                )
                self.assertEqual(
                    codecs.backslashreplace_errors(
                        UnicodeTranslateError("a" + s + "b",
                                              1, 1 + len(s), "ouch")),
                    (r, 1 + len(s))
                )
        tests = [
            (b"a", "\\x61"),
            (b"\n", "\\x0a"),
            (b"\x00", "\\x00"),
            (b"\xff", "\\xff"),
        ]
        for b, r in tests:
            with self.subTest(bytes=b):
                self.assertEqual(
                    codecs.backslashreplace_errors(
                        UnicodeDecodeError("ascii", bytearray(b"a" + b + b"b"),
                                           1, 2, "ouch")),
                    (r, 2)
                )

def test_badandgoodnamereplaceexceptions(self):
        # "namereplace" complains about a non-exception passed in
        self.assertRaises(
           TypeError,
           codecs.namereplace_errors,
           42
        )
        # "namereplace" complains about the wrong exception types
        self.assertRaises(
           TypeError,
           codecs.namereplace_errors,
           UnicodeError("ouch")
        )
        # "namereplace" can only be used for encoding
        self.assertRaises(
            TypeError,
            codecs.namereplace_errors,
            UnicodeDecodeError("ascii", bytearray(b"\xff"), 0, 1, "ouch")
        )
        self.assertRaises(
            TypeError,
            codecs.namereplace_errors,
            UnicodeTranslateError("\u3042", 0, 1, "ouch")
        )
        # Use the correct exception
        tests = [
            ("\u3042", "\\N{HIRAGANA LETTER A}"),
            ("\x00", "\\x00"),
            ("\ufbf9", "\\N{ARABIC LIGATURE UIGHUR KIRGHIZ YEH WITH "
                       "HAMZA ABOVE WITH ALEF MAKSURA ISOLATED FORM}"),
            ("\U000e007f", "\\N{CANCEL TAG}"),
            ("\U0010ffff", "\\U0010ffff"),
            # Lone surrogates
            ("\ud800", "\\ud800"),
            ("\udfff", "\\udfff"),
            ("\ud800\udfff", "\\ud800\\udfff"),
        ]
        for s, r in tests:
            with self.subTest(str=s):
                self.assertEqual(
                    codecs.namereplace_errors(
                        UnicodeEncodeError("ascii", "a" + s + "b",
                                           1, 1 + len(s), "ouch")),
                    (r, 1 + len(s))
                )

def test_badandgoodsurrogateescapeexceptions(self):
        surrogateescape_errors = codecs.lookup_error('surrogateescape')
        # "surrogateescape" complains about a non-exception passed in
        self.assertRaises(
           TypeError,
           surrogateescape_errors,
           42
        )
        # "surrogateescape" complains about the wrong exception types
        self.assertRaises(
           TypeError,
           surrogateescape_errors,
           UnicodeError("ouch")
        )
        # "surrogateescape" can not be used for translating
        self.assertRaises(
            TypeError,
            surrogateescape_errors,
            UnicodeTranslateError("\udc80", 0, 1, "ouch")
        )
        # Use the correct exception
        for s in ("a", "\udc7f", "\udd00"):
            with self.subTest(str=s):
                self.assertRaises(
                    UnicodeEncodeError,
                    surrogateescape_errors,
                    UnicodeEncodeError("ascii", s, 0, 1, "ouch")
                )
        self.assertEqual(
            surrogateescape_errors(
                UnicodeEncodeError("ascii", "a\udc80b", 1, 2, "ouch")),
            (b"\x80", 2)
        )
        self.assertRaises(
            UnicodeDecodeError,
            surrogateescape_errors,
            UnicodeDecodeError("ascii", bytearray(b"a"), 0, 1, "ouch")
        )
        self.assertEqual(
            surrogateescape_errors(
                UnicodeDecodeError("ascii", bytearray(b"a\x80b"), 1, 2, "ouch")),
            ("\udc80", 2)
        )

def test_badandgoodsurrogatepassexceptions(self):
        surrogatepass_errors = codecs.lookup_error('surrogatepass')
        # "surrogatepass" complains about a non-exception passed in
        self.assertRaises(
           TypeError,
           surrogatepass_errors,
           42
        )
        # "surrogatepass" complains about the wrong exception types
        self.assertRaises(
           TypeError,
           surrogatepass_errors,
           UnicodeError("ouch")
        )
        # "surrogatepass" can not be used for translating
        self.assertRaises(
            TypeError,
            surrogatepass_errors,
            UnicodeTranslateError("\ud800", 0, 1, "ouch")
        )
        # Use the correct exception
        for enc in ("utf-8", "utf-16le", "utf-16be", "utf-32le", "utf-32be"):
            with self.subTest(encoding=enc):
                self.assertRaises(
                    UnicodeEncodeError,
                    surrogatepass_errors,
                    UnicodeEncodeError(enc, "a", 0, 1, "ouch")
                )
                self.assertRaises(
                    UnicodeDecodeError,
                    surrogatepass_errors,
                    UnicodeDecodeError(enc, "a".encode(enc), 0, 1, "ouch")
                )
        for s in ("\ud800", "\udfff", "\ud800\udfff"):
            with self.subTest(str=s):
                self.assertRaises(
                    UnicodeEncodeError,
                    surrogatepass_errors,
                    UnicodeEncodeError("ascii", s, 0, len(s), "ouch")
                )
        tests = [
            ("utf-8", "\ud800", b'\xed\xa0\x80', 3),
            ("utf-16le", "\ud800", b'\x00\xd8', 2),
            ("utf-16be", "\ud800", b'\xd8\x00', 2),
            ("utf-32le", "\ud800", b'\x00\xd8\x00\x00', 4),
            ("utf-32be", "\ud800", b'\x00\x00\xd8\x00', 4),
            ("utf-8", "\udfff", b'\xed\xbf\xbf', 3),
            ("utf-16le", "\udfff", b'\xff\xdf', 2),
            ("utf-16be", "\udfff", b'\xdf\xff', 2),
            ("utf-32le", "\udfff", b'\xff\xdf\x00\x00', 4),
            ("utf-32be", "\udfff", b'\x00\x00\xdf\xff', 4),
            ("utf-8", "\ud800\udfff", b'\xed\xa0\x80\xed\xbf\xbf', 3),
            ("utf-16le", "\ud800\udfff", b'\x00\xd8\xff\xdf', 2),
            ("utf-16be", "\ud800\udfff", b'\xd8\x00\xdf\xff', 2),
            ("utf-32le", "\ud800\udfff", b'\x00\xd8\x00\x00\xff\xdf\x00\x00', 4),
            ("utf-32be", "\ud800\udfff", b'\x00\x00\xd8\x00\x00\x00\xdf\xff', 4),
        ]
        for enc, s, b, n in tests:
            with self.subTest(encoding=enc, str=s, bytes=b):
                self.assertEqual(
                    surrogatepass_errors(
                        UnicodeEncodeError(enc, "a" + s + "b",
                                           1, 1 + len(s), "ouch")),
                    (b, 1 + len(s))
                )
                self.assertEqual(
                    surrogatepass_errors(
                        UnicodeDecodeError(enc, bytearray(b"a" + b[:n] + b"b"),
                                           1, 1 + n, "ouch")),
                    (s[:1], 1 + n)
                )

def test_badhandlerresults(self):
        results = ( 42, "foo", (1,2,3), ("foo", 1, 3), ("foo", None), ("foo",), ("foo", 1, 3), ("foo", None), ("foo",) )
        encs = ("ascii", "latin-1", "iso-8859-1", "iso-8859-15")

for res in results:
            codecs.register_error("test.badhandler", lambda x: res)
            for enc in encs:
                self.assertRaises(
                    TypeError,
                    "\u3042".encode,
                    enc,
                    "test.badhandler"
                )
            for (enc, bytes) in (
                ("ascii", b"\xff"),
                ("utf-8", b"\xff"),
                ("utf-7", b"+x-"),
            ):
                self.assertRaises(
                    TypeError,
                    bytes.decode,
                    enc,
                    "test.badhandler"
                )

def test_lookup(self):
        self.assertEqual(codecs.strict_errors, codecs.lookup_error("strict"))
        self.assertEqual(codecs.ignore_errors, codecs.lookup_error("ignore"))
        self.assertEqual(codecs.strict_errors, codecs.lookup_error("strict"))
        self.assertEqual(
            codecs.xmlcharrefreplace_errors,
            codecs.lookup_error("xmlcharrefreplace")
        )
        self.assertEqual(
            codecs.backslashreplace_errors,
            codecs.lookup_error("backslashreplace")
        )
        self.assertEqual(
            codecs.namereplace_errors,
            codecs.lookup_error("namereplace")
        )

def test_encode_nonascii_replacement(self):
        def handle(exc):
            if isinstance(exc, UnicodeEncodeError):
                return (repl, exc.end)
            raise TypeError("don't know how to handle %r" % exc)
        codecs.register_error("test.replacing", handle)

for enc, input, repl in (
                ("ascii", "[¤]", "abc"),
                ("iso-8859-1", "[€]", "½¾"),
                ("iso-8859-15", "[¤]", "œŸ"),
        ):
            res = input.encode(enc, "test.replacing")
            self.assertEqual(res, ("[" + repl + "]").encode(enc))

for enc, input, repl in (
                ("utf-8", "[\udc80]", "\U0001f40d"),
                ("utf-16", "[\udc80]", "\U0001f40d"),
                ("utf-32", "[\udc80]", "\U0001f40d"),
        ):
            with self.subTest(encoding=enc):
                with self.assertRaises(UnicodeEncodeError) as cm:
                    input.encode(enc, "test.replacing")
                exc = cm.exception
                self.assertEqual(exc.start, 1)
                self.assertEqual(exc.end, 2)
                self.assertEqual(exc.object, input)

def test_encode_unencodable_replacement(self):
        def unencrepl(exc):
            if isinstance(exc, UnicodeEncodeError):
                return (repl, exc.end)
            else:
                raise TypeError("don't know how to handle %r" % exc)
        codecs.register_error("test.unencreplhandler", unencrepl)

for enc, input, repl in (
                ("ascii", "[¤]", "½"),
                ("iso-8859-1", "[€]", "œ"),
                ("iso-8859-15", "[¤]", "½"),
                ("utf-8", "[\udc80]", "\udcff"),
                ("utf-16", "[\udc80]", "\udcff"),
                ("utf-32", "[\udc80]", "\udcff"),
        ):
            with self.subTest(encoding=enc):
                with self.assertRaises(UnicodeEncodeError) as cm:
                    input.encode(enc, "test.unencreplhandler")
                exc = cm.exception
                self.assertEqual(exc.start, 1)
                self.assertEqual(exc.end, 2)
                self.assertEqual(exc.object, input)

def test_encode_bytes_replacement(self):
        def handle(exc):
            if isinstance(exc, UnicodeEncodeError):
                return (repl, exc.end)
            raise TypeError("don't know how to handle %r" % exc)
        codecs.register_error("test.replacing", handle)

# It works even if the bytes sequence is not decodable.
        for enc, input, repl in (
                ("ascii", "[¤]", b"\xbd\xbe"),
                ("iso-8859-1", "[€]", b"\xbd\xbe"),
                ("iso-8859-15", "[¤]", b"\xbd\xbe"),
                ("utf-8", "[\udc80]", b"\xbd\xbe"),
                ("utf-16le", "[\udc80]", b"\xbd\xbe"),
                ("utf-16be", "[\udc80]", b"\xbd\xbe"),
                ("utf-32le", "[\udc80]", b"\xbc\xbd\xbe\xbf"),
                ("utf-32be", "[\udc80]", b"\xbc\xbd\xbe\xbf"),
        ):
            with self.subTest(encoding=enc):
                res = input.encode(enc, "test.replacing")
                self.assertEqual(res, "[".encode(enc) + repl + "]".encode(enc))

def test_encode_odd_bytes_replacement(self):
        def handle(exc):
            if isinstance(exc, UnicodeEncodeError):
                return (repl, exc.end)
            raise TypeError("don't know how to handle %r" % exc)
        codecs.register_error("test.replacing", handle)

input = "[\udc80]"
        # Tests in which the replacement bytestring contains not whole number
        # of code units.
        for enc, repl in (
            *itertools.product(("utf-16le", "utf-16be"),
                               [b"a", b"abc"]),
            *itertools.product(("utf-32le", "utf-32be"),
                               [b"a", b"ab", b"abc", b"abcde"]),
        ):
            with self.subTest(encoding=enc, repl=repl):
                with self.assertRaises(UnicodeEncodeError) as cm:
                    input.encode(enc, "test.replacing")
                exc = cm.exception
                self.assertEqual(exc.start, 1)
                self.assertEqual(exc.end, 2)
                self.assertEqual(exc.object, input)
                self.assertEqual(exc.reason, "surrogates not allowed")

def test_badregistercall(self):
        # enhance coverage of:
        # Modules/_codecsmodule.c::register_error()
        # Python/codecs.c::PyCodec_RegisterError()
        self.assertRaises(TypeError, codecs.register_error, 42)
        self.assertRaises(TypeError, codecs.register_error, "test.dummy", 42)

def test_badlookupcall(self):
        # enhance coverage of:
        # Modules/_codecsmodule.c::lookup_error()
        self.assertRaises(TypeError, codecs.lookup_error)

def test_unknownhandler(self):
        # enhance coverage of:
        # Modules/_codecsmodule.c::lookup_error()
        self.assertRaises(LookupError, codecs.lookup_error, "test.unknown")

def test_xmlcharrefvalues(self):
        # enhance coverage of:
        # Python/codecs.c::PyCodec_XMLCharRefReplaceErrors()
        # and inline implementations
        v = (1, 5, 10, 50, 100, 500, 1000, 5000, 10000, 50000, 100000,
             500000, 1000000)
        s = "".join([chr(x) for x in v])
        codecs.register_error("test.xmlcharrefreplace", codecs.xmlcharrefreplace_errors)
        for enc in ("ascii", "iso-8859-15"):
            for err in ("xmlcharrefreplace", "test.xmlcharrefreplace"):
                s.encode(enc, err)

def test_decodehelper(self):
        # enhance coverage of:
        # Objects/unicodeobject.c::unicode_decode_call_errorhandler()
        # and callers
        self.assertRaises(LookupError, b"\xff".decode, "ascii", "test.unknown")

def baddecodereturn1(exc):
            return 42
        codecs.register_error("test.baddecodereturn1", baddecodereturn1)
        self.assertRaises(TypeError, b"\xff".decode, "ascii", "test.baddecodereturn1")
        self.assertRaises(TypeError, b"\\".decode, "unicode-escape", "test.baddecodereturn1")
        self.assertRaises(TypeError, b"\\x0".decode, "unicode-escape", "test.baddecodereturn1")
        self.assertRaises(TypeError, b"\\x0y".decode, "unicode-escape", "test.baddecodereturn1")
        self.assertRaises(TypeError, b"\\Uffffeeee".decode, "unicode-escape", "test.baddecodereturn1")
        self.assertRaises(TypeError, b"\\uyyyy".decode, "raw-unicode-escape", "test.baddecodereturn1")

def baddecodereturn2(exc):
            return ("?", None)
        codecs.register_error("test.baddecodereturn2", baddecodereturn2)
        self.assertRaises(TypeError, b"\xff".decode, "ascii", "test.baddecodereturn2")

handler = PosReturn()
        codecs.register_error("test.posreturn", handler.handle)

# Valid negative position
        handler.pos = -1
        self.assertEqual(b"\xff0".decode("ascii", "test.posreturn"), "<?>0")

# Valid negative position
        handler.pos = -2
        self.assertEqual(b"\xff0".decode("ascii", "test.posreturn"), "<?><?>")

# Negative position out of bounds
        handler.pos = -3
        self.assertRaises(IndexError, b"\xff0".decode, "ascii", "test.posreturn")

# Valid positive position
        handler.pos = 1
        self.assertEqual(b"\xff0".decode("ascii", "test.posreturn"), "<?>0")

# Largest valid positive position (one beyond end of input)
        handler.pos = 2
        self.assertEqual(b"\xff0".decode("ascii", "test.posreturn"), "<?>")

# Invalid positive position
        handler.pos = 3
        self.assertRaises(IndexError, b"\xff0".decode, "ascii", "test.posreturn")

# Restart at the "0"
        handler.pos = 6
        self.assertEqual(b"\\uyyyy0".decode("raw-unicode-escape", "test.posreturn"), "<?>0")

class D(dict):
            def __getitem__(self, key):
                raise ValueError
        self.assertRaises(UnicodeError, codecs.charmap_decode, b"\xff", "strict", {0xff: None})
        self.assertRaises(ValueError, codecs.charmap_decode, b"\xff", "strict", D())
        self.assertRaises(TypeError, codecs.charmap_decode, b"\xff", "strict", {0xff: sys.maxunicode+1})

def test_encodehelper(self):
        # enhance coverage of:
        # Objects/unicodeobject.c::unicode_encode_call_errorhandler()
        # and callers
        self.assertRaises(LookupError, "\xff".encode, "ascii", "test.unknown")

def badencodereturn1(exc):
            return 42
        codecs.register_error("test.badencodereturn1", badencodereturn1)
        self.assertRaises(TypeError, "\xff".encode, "ascii", "test.badencodereturn1")

def badencodereturn2(exc):
            return ("?", None)
        codecs.register_error("test.badencodereturn2", badencodereturn2)
        self.assertRaises(TypeError, "\xff".encode, "ascii", "test.badencodereturn2")

handler = PosReturn()
        codecs.register_error("test.posreturn", handler.handle)

# Valid negative position
        handler.pos = -1
        self.assertEqual("\xff0".encode("ascii", "test.posreturn"), b"<?>0")

# Valid negative position
        handler.pos = -2
        self.assertEqual("\xff0".encode("ascii", "test.posreturn"), b"<?><?>")

# Negative position out of bounds
        handler.pos = -3
        self.assertRaises(IndexError, "\xff0".encode, "ascii", "test.posreturn")

# Valid positive position
        handler.pos = 1
        self.assertEqual("\xff0".encode("ascii", "test.posreturn"), b"<?>0")

# Largest valid positive position (one beyond end of input
        handler.pos = 2
        self.assertEqual("\xff0".encode("ascii", "test.posreturn"), b"<?>")

# Invalid positive position
        handler.pos = 3
        self.assertRaises(IndexError, "\xff0".encode, "ascii", "test.posreturn")

handler.pos = 0

class D(dict):
            def __getitem__(self, key):
                raise ValueError
        for err in ("strict", "replace", "xmlcharrefreplace",
                    "backslashreplace", "namereplace", "test.posreturn"):
            self.assertRaises(UnicodeError, codecs.charmap_encode, "\xff", err, {0xff: None})
            self.assertRaises(ValueError, codecs.charmap_encode, "\xff", err, D())
            self.assertRaises(TypeError, codecs.charmap_encode, "\xff", err, {0xff: 300})

def test_decodehelper_bug36819(self):
        handler = RepeatedPosReturn("x")
        codecs.register_error("test.bug36819", handler.handle)

testcases = [
            ("ascii", b"\xff"),
            ("utf-8", b"\xff"),
            ("utf-16be", b'\xdc\x80'),
            ("utf-32be", b'\x00\x00\xdc\x80'),
            ("iso-8859-6", b"\xff"),
        ]
        for enc, bad in testcases:
            input = "abcd".encode(enc) + bad
            with self.subTest(encoding=enc):
                handler.count = 50
                decoded = input.decode(enc, "test.bug36819")
                self.assertEqual(decoded, 'abcdx' * 51)

def test_encodehelper_bug36819(self):
        handler = RepeatedPosReturn()
        codecs.register_error("test.bug36819", handler.handle)

input = "abcd\udc80"
        encodings = ["ascii", "latin1", "utf-8", "utf-16", "utf-32"]  # built-in
        encodings += ["iso-8859-15"]  # charmap codec
        if sys.platform == 'win32':
            encodings = ["mbcs", "oem"]  # code page codecs

handler.repl = "\udcff"
        for enc in encodings:
            with self.subTest(encoding=enc):
                handler.count = 50
                with self.assertRaises(UnicodeEncodeError) as cm:
                    input.encode(enc, "test.bug36819")
                exc = cm.exception
                self.assertEqual(exc.start, 4)
                self.assertEqual(exc.end, 5)
                self.assertEqual(exc.object, input)
        if sys.platform == "win32":
            handler.count = 50
            with self.assertRaises(UnicodeEncodeError) as cm:
                codecs.code_page_encode(437, input, "test.bug36819")
            exc = cm.exception
            self.assertEqual(exc.start, 4)
            self.assertEqual(exc.end, 5)
            self.assertEqual(exc.object, input)

handler.repl = "x"
        for enc in encodings:
            with self.subTest(encoding=enc):
                # The interpreter should segfault after a handful of attempts.
                # 50 was chosen to try to ensure a segfault without a fix,
                # but not OOM a machine with one.
                handler.count = 50
                encoded = input.encode(enc, "test.bug36819")
                self.assertEqual(encoded.decode(enc), "abcdx" * 51)
        if sys.platform == "win32":
            handler.count = 50
            encoded = codecs.code_page_encode(437, input, "test.bug36819")
            self.assertEqual(encoded[0].decode(), "abcdx" * 51)
            self.assertEqual(encoded[1], len(input))

def test_translatehelper(self):
        # enhance coverage of:
        # Objects/unicodeobject.c::unicode_encode_call_errorhandler()
        # and callers
        # (Unfortunately the errors argument is not directly accessible
        # from Python, so we can't test that much)
        class D(dict):
            def __getitem__(self, key):
                raise ValueError
        #self.assertRaises(ValueError, "\xff".translate, D())
        self.assertRaises(ValueError, "\xff".translate, {0xff: sys.maxunicode+1})
        self.assertRaises(TypeError, "\xff".translate, {0xff: ()})

def test_bug828737(self):
        charmap = {
            ord("&"): "&amp;",
            ord("<"): "&lt;",
            ord(">"): "&gt;",
            ord('"'): "&quot;",
        }

for n in (1, 10, 100, 1000):
            text = 'abc<def>ghi'*n
            text.translate(charmap)

def test_mutatingdecodehandler(self):
        baddata = [
            ("ascii", b"\xff"),
            ("utf-7", b"++"),
            ("utf-8",  b"\xff"),
            ("utf-16", b"\xff"),
            ("utf-32", b"\xff"),
            ("unicode-escape", b"\\u123g"),
            ("raw-unicode-escape", b"\\u123g"),
        ]

def replacing(exc):
            if isinstance(exc, UnicodeDecodeError):
                exc.object = 42
                return ("\u4242", 0)
            else:
                raise TypeError("don't know how to handle %r" % exc)
        codecs.register_error("test.replacing", replacing)

for (encoding, data) in baddata:
            with self.assertRaises(TypeError):
                data.decode(encoding, "test.replacing")

def mutating(exc):
            if isinstance(exc, UnicodeDecodeError):
                exc.object = b""
                return ("\u4242", 0)
            else:
                raise TypeError("don't know how to handle %r" % exc)
        codecs.register_error("test.mutating", mutating)
        # If the decoder doesn't pick up the modified input the following
        # will lead to an endless loop
        for (encoding, data) in baddata:
            self.assertEqual(data.decode(encoding, "test.mutating"), "\u4242")

# issue32583
    def test_crashing_decode_handler(self):
        # better generating one more character to fill the extra space slot
        # so in debug build it can steadily fail
        def forward_shorter_than_end(exc):
            if isinstance(exc, UnicodeDecodeError):
                # size one character, 0 < forward < exc.end
                return ('\ufffd', exc.start+1)
            else:
                raise TypeError("don't know how to handle %r" % exc)
        codecs.register_error(
            "test.forward_shorter_than_end", forward_shorter_than_end)

self.assertEqual(
            b'\xd8\xd8\xd8\xd8\xd8\x00\x00\x00'.decode(
                'utf-16-le', 'test.forward_shorter_than_end'),
            '\ufffd\ufffd\ufffd\ufffd\xd8\x00'
        )
        self.assertEqual(
            b'\xd8\xd8\xd8\xd8\x00\xd8\x00\x00'.decode(
                'utf-16-be', 'test.forward_shorter_than_end'),
            '\ufffd\ufffd\ufffd\ufffd\xd8\x00'
        )
        self.assertEqual(
            b'\x11\x11\x11\x11\x11\x00\x00\x00\x00\x00\x00'.decode(
                'utf-32-le', 'test.forward_shorter_than_end'),
            '\ufffd\ufffd\ufffd\u1111\x00'
        )
        self.assertEqual(
            b'\x11\x11\x11\x00\x00\x11\x11\x00\x00\x00\x00'.decode(
                'utf-32-be', 'test.forward_shorter_than_end'),
            '\ufffd\ufffd\ufffd\u1111\x00'
        )

def replace_with_long(exc):
            if isinstance(exc, UnicodeDecodeError):
                exc.object = b"\x00" * 8
                return ('\ufffd', exc.start)
            else:
                raise TypeError("don't know how to handle %r" % exc)
        codecs.register_error("test.replace_with_long", replace_with_long)

self.assertEqual(
            b'\x00'.decode('utf-16', 'test.replace_with_long'),
            '\ufffd\x00\x00\x00\x00'
        )
        self.assertEqual(
            b'\x00'.decode('utf-32', 'test.replace_with_long'),
            '\ufffd\x00\x00'
        )

def test_fake_error_class(self):
        handlers = [
            codecs.strict_errors,
            codecs.ignore_errors,
            codecs.replace_errors,
            codecs.backslashreplace_errors,
            codecs.namereplace_errors,
            codecs.xmlcharrefreplace_errors,
            codecs.lookup_error('surrogateescape'),
            codecs.lookup_error('surrogatepass'),
        ]
        for cls in UnicodeEncodeError, UnicodeDecodeError, UnicodeTranslateError:
            class FakeUnicodeError(str):
                __class__ = cls
            for handler in handlers:
                with self.subTest(handler=handler, error_class=cls):
                    self.assertRaises(TypeError, handler, FakeUnicodeError())
            class FakeUnicodeError(Exception):
                __class__ = cls
            for handler in handlers:
                with self.subTest(handler=handler, error_class=cls):
                    with self.assertRaises((TypeError, FakeUnicodeError)):
                        handler(FakeUnicodeError())

if __name__ == "__main__":
    unittest.main()

${this.title}

Code Editor : test_codeccallbacks.py