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Name	Size	Permission
__pycache__	[ DIR ]	drwxrwxrwx
audiodata	[ DIR ]	drwxrwxrwx
capath	[ DIR ]	drwxrwxrwx
cjkencodings	[ DIR ]	drwxrwxrwx
crashers	[ DIR ]	drwxrwxrwx
data	[ DIR ]	drwxrwxrwx
decimaltestdata	[ DIR ]	drwxrwxrwx
dtracedata	[ DIR ]	drwxrwxrwx
encoded_modules	[ DIR ]	drwxrwxrwx
imghdrdata	[ DIR ]	drwxrwxrwx
leakers	[ DIR ]	drwxrwxrwx
libregrtest	[ DIR ]	drwxrwxrwx
sndhdrdata	[ DIR ]	drwxrwxrwx
subprocessdata	[ DIR ]	drwxrwxrwx
support	[ DIR ]	drwxrwxrwx
test_asyncio	[ DIR ]	drwxrwxrwx
test_email	[ DIR ]	drwxrwxrwx
test_import	[ DIR ]	drwxrwxrwx
test_importlib	[ DIR ]	drwxrwxrwx
test_json	[ DIR ]	drwxrwxrwx
test_peg_generator	[ DIR ]	drwxrwxrwx
test_tools	[ DIR ]	drwxrwxrwx
test_warnings	[ DIR ]	drwxrwxrwx
test_zoneinfo	[ DIR ]	drwxrwxrwx
tracedmodules	[ DIR ]	drwxrwxrwx
xmltestdata	[ DIR ]	drwxrwxrwx
ziptestdata	[ DIR ]	drwxrwxrwx
Sine-1000Hz-300ms.aif	60.25 KB	-rw-rw-rw-
__init__.py	48 B	-rw-rw-rw-
__main__.py	43 B	-rw-rw-rw-
_test_atexit.py	3.75 KB	-rw-rw-rw-
_test_eintr.py	18.17 KB	-rw-rw-rw-
_test_embed_set_config.py	8.81 KB	-rw-rw-rw-
_test_multiprocessing.py	199.1 KB	-rw-rw-rw-
_typed_dict_helper.py	512 B	-rw-rw-rw-
allsans.pem	10.03 KB	-rw-rw-rw-
ann_module.py	1.15 KB	-rw-rw-rw-
ann_module2.py	555 B	-rw-rw-rw-
ann_module3.py	466 B	-rw-rw-rw-
ann_module4.py	86 B	-rw-rw-rw-
ann_module5.py	212 B	-rw-rw-rw-
ann_module6.py	145 B	-rw-rw-rw-
ann_module7.py	306 B	-rw-rw-rw-
audiotest.au	27.48 KB	-rw-rw-rw-
audiotests.py	12.46 KB	-rw-rw-rw-
audit-tests.py	11.09 KB	-rw-rw-rw-
autotest.py	214 B	-rw-rw-rw-
bad_coding.py	25 B	-rw-rw-rw-
bad_coding2.py	32 B	-rw-rw-rw-
bad_getattr.py	65 B	-rw-rw-rw-
bad_getattr2.py	84 B	-rw-rw-rw-
bad_getattr3.py	144 B	-rw-rw-rw-
badcert.pem	1.92 KB	-rw-rw-rw-
badkey.pem	2.15 KB	-rw-rw-rw-
badsyntax_3131.py	34 B	-rw-rw-rw-
badsyntax_future10.py	98 B	-rw-rw-rw-
badsyntax_future3.py	182 B	-rw-rw-rw-
badsyntax_future4.py	163 B	-rw-rw-rw-
badsyntax_future5.py	196 B	-rw-rw-rw-
badsyntax_future6.py	171 B	-rw-rw-rw-
badsyntax_future7.py	207 B	-rw-rw-rw-
badsyntax_future8.py	132 B	-rw-rw-rw-
badsyntax_future9.py	152 B	-rw-rw-rw-
badsyntax_pep3120.py	15 B	-rw-rw-rw-
bisect_cmd.py	5.39 KB	-rw-rw-rw-
cfgparser.1	70 B	-rw-rw-rw-
cfgparser.2	19.54 KB	-rw-rw-rw-
cfgparser.3	1.62 KB	-rw-rw-rw-
clinic.test	97.34 KB	-rw-rw-rw-
cmath_testcases.txt	143.5 KB	-rw-rw-rw-
coding20731.py	22 B	-rw-rw-rw-
curses_tests.py	1.26 KB	-rw-rw-rw-
dataclass_module_1.py	869 B	-rw-rw-rw-
dataclass_module_1_str.py	867 B	-rw-rw-rw-
dataclass_module_2.py	788 B	-rw-rw-rw-
dataclass_module_2_str.py	786 B	-rw-rw-rw-
dataclass_textanno.py	138 B	-rw-rw-rw-
datetimetester.py	251.38 KB	-rw-rw-rw-
dis_module.py	81 B	-rw-rw-rw-
doctest_aliases.py	253 B	-rw-rw-rw-
doctest_lineno.py	964 B	-rw-rw-rw-
double_const.py	1.21 KB	-rw-rw-rw-
empty.vbs	70 B	-rw-rw-rw-
exception_hierarchy.txt	1.87 KB	-rw-rw-rw-
ffdh3072.pem	2.2 KB	-rw-rw-rw-
final_a.py	430 B	-rw-rw-rw-
final_b.py	430 B	-rw-rw-rw-
floating_points.txt	16.92 KB	-rw-rw-rw-
fork_wait.py	2.31 KB	-rw-rw-rw-
formatfloat_testcases.txt	7.8 KB	-rw-rw-rw-
future_test1.py	240 B	-rw-rw-rw-
future_test2.py	159 B	-rw-rw-rw-
gdb_sample.py	165 B	-rw-rw-rw-
good_getattr.py	209 B	-rw-rw-rw-
idnsans.pem	9.88 KB	-rw-rw-rw-
ieee754.txt	3.39 KB	-rw-rw-rw-
imp_dummy.py	66 B	-rw-rw-rw-
inspect_fodder.py	1.99 KB	-rw-rw-rw-
inspect_fodder2.py	3.64 KB	-rw-rw-rw-
inspect_stock_annotations.py	537 B	-rw-rw-rw-
inspect_stringized_annotations...	646 B	-rw-rw-rw-
inspect_stringized_annotations...	63 B	-rw-rw-rw-
keycert.passwd.pem	4.19 KB	-rw-rw-rw-
keycert.pem	4.03 KB	-rw-rw-rw-
keycert2.pem	4.05 KB	-rw-rw-rw-
keycert3.pem	9.39 KB	-rw-rw-rw-
keycert4.pem	9.4 KB	-rw-rw-rw-
keycertecc.pem	5.61 KB	-rw-rw-rw-
list_tests.py	17.2 KB	-rw-rw-rw-
lock_tests.py	31.14 KB	-rw-rw-rw-
mailcap.txt	1.28 KB	-rw-rw-rw-
make_ssl_certs.py	9.55 KB	-rw-rw-rw-
mapping_tests.py	22.49 KB	-rw-rw-rw-
math_testcases.txt	23.8 KB	-rw-rw-rw-
memory_watchdog.py	887 B	-rw-rw-rw-
mime.types	48.78 KB	-rw-rw-rw-
mock_socket.py	3.86 KB	-rw-rw-rw-
mod_generics_cache.py	1.18 KB	-rw-rw-rw-
mp_fork_bomb.py	466 B	-rw-rw-rw-
mp_preload.py	369 B	-rw-rw-rw-
multibytecodec_support.py	14.56 KB	-rw-rw-rw-
nokia.pem	1.91 KB	-rw-rw-rw-
nosan.pem	7.67 KB	-rw-rw-rw-
nullbytecert.pem	5.4 KB	-rw-rw-rw-
nullcert.pem	0 B	-rw-rw-rw-
pickletester.py	142.98 KB	-rw-rw-rw-
profilee.py	3.08 KB	-rw-rw-rw-
pstats.pck	65.05 KB	-rw-rw-rw-
pycacert.pem	5.63 KB	-rw-rw-rw-
pycakey.pem	2.46 KB	-rw-rw-rw-
pyclbr_input.py	681 B	-rw-rw-rw-
pydoc_mod.py	1010 B	-rw-rw-rw-
pydocfodder.py	6.39 KB	-rw-rw-rw-
pythoninfo.py	24.41 KB	-rw-rw-rw-
randv2_32.pck	7.34 KB	-rw-rw-rw-
randv2_64.pck	7.19 KB	-rw-rw-rw-
randv3.pck	7.82 KB	-rw-rw-rw-
re_tests.py	26.48 KB	-rw-rw-rw-
recursion.tar	516 B	-rw-rw-rw-
regrtest.py	1.31 KB	-rw-rw-rw-
relimport.py	28 B	-rw-rw-rw-
reperf.py	561 B	-rw-rw-rw-
revocation.crl	814 B	-rw-rw-rw-
sample_doctest.py	1.09 KB	-rw-rw-rw-
sample_doctest_no_docstrings.p...	239 B	-rw-rw-rw-
sample_doctest_no_doctests.py	284 B	-rw-rw-rw-
secp384r1.pem	263 B	-rw-rw-rw-
selfsigned_pythontestdotnet.pe...	2.11 KB	-rw-rw-rw-
seq_tests.py	15.29 KB	-rw-rw-rw-
sgml_input.html	8.31 KB	-rw-rw-rw-
signalinterproctester.py	2.82 KB	-rw-rw-rw-
sortperf.py	4.86 KB	-rw-rw-rw-
ssl_cert.pem	1.56 KB	-rw-rw-rw-
ssl_key.passwd.pem	2.63 KB	-rw-rw-rw-
ssl_key.pem	2.47 KB	-rw-rw-rw-
ssl_servers.py	7.31 KB	-rw-rw-rw-
ssltests.py	1.06 KB	-rw-rw-rw-
string_tests.py	69.47 KB	-rw-rw-rw-
talos-2019-0758.pem	1.32 KB	-rw-rw-rw-
test___all__.py	4.66 KB	-rw-rw-rw-
test___future__.py	2.42 KB	-rw-rw-rw-
test__locale.py	8.02 KB	-rw-rw-rw-
test__opcode.py	3.11 KB	-rw-rw-rw-
test__osx_support.py	13.96 KB	-rw-rw-rw-
test__xxsubinterpreters.py	81.21 KB	-rw-rw-rw-
test_abc.py	23.85 KB	-rw-rw-rw-
test_abstract_numbers.py	1.54 KB	-rw-rw-rw-
test_aifc.py	18.2 KB	-rw-rw-rw-
test_argparse.py	185.85 KB	-rw-rw-rw-
test_array.py	56.79 KB	-rw-rw-rw-
test_asdl_parser.py	4.57 KB	-rw-rw-rw-
test_ast.py	107.34 KB	-rw-rw-rw-
test_asyncgen.py	48.43 KB	-rw-rw-rw-
test_asynchat.py	9.68 KB	-rw-rw-rw-
test_asyncore.py	26.95 KB	-rw-rw-rw-
test_atexit.py	3.25 KB	-rw-rw-rw-
test_audioop.py	28.79 KB	-rw-rw-rw-
test_audit.py	5.56 KB	-rw-rw-rw-
test_augassign.py	8 KB	-rw-rw-rw-
test_base64.py	35.28 KB	-rw-rw-rw-
test_baseexception.py	7.05 KB	-rw-rw-rw-
test_bdb.py	44.64 KB	-rw-rw-rw-
test_bigaddrspace.py	2.93 KB	-rw-rw-rw-
test_bigmem.py	46.01 KB	-rw-rw-rw-
test_binascii.py	19.72 KB	-rw-rw-rw-
test_binhex.py	2.17 KB	-rw-rw-rw-
test_binop.py	14.57 KB	-rw-rw-rw-
test_bisect.py	16.09 KB	-rw-rw-rw-
test_bool.py	12.89 KB	-rw-rw-rw-
test_buffer.py	164.64 KB	-rw-rw-rw-
test_bufio.py	2.65 KB	-rw-rw-rw-
test_builtin.py	87.93 KB	-rw-rw-rw-
test_bytes.py	78.01 KB	-rw-rw-rw-
test_bz2.py	38.22 KB	-rw-rw-rw-
test_c_locale_coercion.py	19.35 KB	-rw-rw-rw-
test_calendar.py	51.76 KB	-rw-rw-rw-
test_call.py	26.95 KB	-rw-rw-rw-
test_capi.py	41.78 KB	-rw-rw-rw-
test_cgi.py	22.89 KB	-rw-rw-rw-
test_cgitb.py	2.61 KB	-rw-rw-rw-
test_charmapcodec.py	1.83 KB	-rw-rw-rw-
test_check_c_globals.py	773 B	-rw-rw-rw-
test_class.py	18.07 KB	-rw-rw-rw-
test_clinic.py	22.35 KB	-rw-rw-rw-
test_cmath.py	24.71 KB	-rw-rw-rw-
test_cmd.py	6.34 KB	-rw-rw-rw-
test_cmd_line.py	36.79 KB	-rw-rw-rw-
test_cmd_line_script.py	33.44 KB	-rw-rw-rw-
test_code.py	13.11 KB	-rw-rw-rw-
test_code_module.py	5.69 KB	-rw-rw-rw-
test_codeccallbacks.py	48.64 KB	-rw-rw-rw-
test_codecencodings_cn.py	3.95 KB	-rw-rw-rw-
test_codecencodings_hk.py	723 B	-rw-rw-rw-
test_codecencodings_iso2022.py	1.4 KB	-rw-rw-rw-
test_codecencodings_jp.py	4.92 KB	-rw-rw-rw-
test_codecencodings_kr.py	3.02 KB	-rw-rw-rw-
test_codecencodings_tw.py	703 B	-rw-rw-rw-
test_codecmaps_cn.py	772 B	-rw-rw-rw-
test_codecmaps_hk.py	401 B	-rw-rw-rw-
test_codecmaps_jp.py	1.76 KB	-rw-rw-rw-
test_codecmaps_kr.py	1.2 KB	-rw-rw-rw-
test_codecmaps_tw.py	732 B	-rw-rw-rw-
test_codecs.py	136.49 KB	-rw-rw-rw-
test_codeop.py	8.65 KB	-rw-rw-rw-
test_collections.py	94.1 KB	-rw-rw-rw-
test_colorsys.py	3.93 KB	-rw-rw-rw-
test_compare.py	3.85 KB	-rw-rw-rw-
test_compile.py	45.9 KB	-rw-rw-rw-
test_compileall.py	47.1 KB	-rw-rw-rw-
test_complex.py	33.54 KB	-rw-rw-rw-
test_concurrent_futures.py	57.2 KB	-rw-rw-rw-
test_configparser.py	87.49 KB	-rw-rw-rw-
test_contains.py	3.46 KB	-rw-rw-rw-
test_context.py	31.7 KB	-rw-rw-rw-
test_contextlib.py	36.33 KB	-rw-rw-rw-
test_contextlib_async.py	19.36 KB	-rw-rw-rw-
test_copy.py	27.28 KB	-rw-rw-rw-
test_copyreg.py	4.52 KB	-rw-rw-rw-
test_coroutines.py	65.27 KB	-rw-rw-rw-
test_cprofile.py	6.45 KB	-rw-rw-rw-
test_crashers.py	1.21 KB	-rw-rw-rw-
test_crypt.py	4.25 KB	-rw-rw-rw-
test_csv.py	52.95 KB	-rw-rw-rw-
test_ctypes.py	209 B	-rw-rw-rw-
test_curses.py	47.87 KB	-rw-rw-rw-
test_dataclasses.py	129.65 KB	-rw-rw-rw-
test_datetime.py	2.37 KB	-rw-rw-rw-
test_dbm.py	6.3 KB	-rw-rw-rw-
test_dbm_dumb.py	10.97 KB	-rw-rw-rw-
test_dbm_gnu.py	6.68 KB	-rw-rw-rw-
test_dbm_ndbm.py	5.24 KB	-rw-rw-rw-
test_decimal.py	214.93 KB	-rw-rw-rw-
test_decorators.py	14.87 KB	-rw-rw-rw-
test_defaultdict.py	6.31 KB	-rw-rw-rw-
test_deque.py	34.67 KB	-rw-rw-rw-
test_descr.py	198.27 KB	-rw-rw-rw-
test_descrtut.py	12.03 KB	-rw-rw-rw-
test_devpoll.py	4.58 KB	-rw-rw-rw-
test_dict.py	52.3 KB	-rw-rw-rw-
test_dict_version.py	6.28 KB	-rw-rw-rw-
test_dictcomps.py	5.28 KB	-rw-rw-rw-
test_dictviews.py	13.81 KB	-rw-rw-rw-
test_difflib.py	22.02 KB	-rw-rw-rw-
test_difflib_expect.html	101.36 KB	-rw-rw-rw-
test_dis.py	57.74 KB	-rw-rw-rw-
test_distutils.py	615 B	-rw-rw-rw-
test_doctest.py	104.21 KB	-rw-rw-rw-
test_doctest.txt	317 B	-rw-rw-rw-
test_doctest2.py	2.48 KB	-rw-rw-rw-
test_doctest2.txt	406 B	-rw-rw-rw-
test_doctest3.txt	87 B	-rw-rw-rw-
test_doctest4.txt	255 B	-rw-rw-rw-
test_docxmlrpc.py	8.88 KB	-rw-rw-rw-
test_dtrace.py	5.31 KB	-rw-rw-rw-
test_dynamic.py	4.43 KB	-rw-rw-rw-
test_dynamicclassattribute.py	9.86 KB	-rw-rw-rw-
test_eintr.py	604 B	-rw-rw-rw-
test_embed.py	57.38 KB	-rw-rw-rw-
test_ensurepip.py	12.55 KB	-rw-rw-rw-
test_enum.py	124.47 KB	-rw-rw-rw-
test_enumerate.py	8.74 KB	-rw-rw-rw-
test_eof.py	3.1 KB	-rw-rw-rw-
test_epoll.py	9.39 KB	-rw-rw-rw-
test_errno.py	1.08 KB	-rw-rw-rw-
test_exception_hierarchy.py	7.63 KB	-rw-rw-rw-
test_exception_variations.py	4.03 KB	-rw-rw-rw-
test_exceptions.py	93.28 KB	-rw-rw-rw-
test_extcall.py	14.57 KB	-rw-rw-rw-
test_faulthandler.py	30.98 KB	-rw-rw-rw-
test_fcntl.py	7.64 KB	-rw-rw-rw-
test_file.py	12.12 KB	-rw-rw-rw-
test_file_eintr.py	10.86 KB	-rw-rw-rw-
test_filecmp.py	10.57 KB	-rw-rw-rw-
test_fileinput.py	40.5 KB	-rw-rw-rw-
test_fileio.py	20.53 KB	-rw-rw-rw-
test_finalization.py	15.18 KB	-rw-rw-rw-
test_float.py	67.75 KB	-rw-rw-rw-
test_flufl.py	1.59 KB	-rw-rw-rw-
test_fnmatch.py	11.38 KB	-rw-rw-rw-
test_fork1.py	3.34 KB	-rw-rw-rw-
test_format.py	24.42 KB	-rw-rw-rw-
test_fractions.py	30.41 KB	-rw-rw-rw-
test_frame.py	6.44 KB	-rw-rw-rw-
test_frozen.py	972 B	-rw-rw-rw-
test_fstring.py	53.85 KB	-rw-rw-rw-
test_ftplib.py	43.12 KB	-rw-rw-rw-
test_funcattrs.py	15.29 KB	-rw-rw-rw-
test_functools.py	105.51 KB	-rw-rw-rw-
test_future.py	15.27 KB	-rw-rw-rw-
test_future3.py	516 B	-rw-rw-rw-
test_future4.py	233 B	-rw-rw-rw-
test_future5.py	531 B	-rw-rw-rw-
test_gc.py	47.3 KB	-rw-rw-rw-
test_gdb.py	42.7 KB	-rw-rw-rw-
test_generator_stop.py	977 B	-rw-rw-rw-
test_generators.py	66.11 KB	-rw-rw-rw-
test_genericalias.py	13.1 KB	-rw-rw-rw-
test_genericclass.py	9.56 KB	-rw-rw-rw-
test_genericpath.py	22.4 KB	-rw-rw-rw-
test_genexps.py	7.92 KB	-rw-rw-rw-
test_getargs2.py	55.19 KB	-rw-rw-rw-
test_getopt.py	6.96 KB	-rw-rw-rw-
test_getpass.py	6.45 KB	-rw-rw-rw-
test_gettext.py	42.36 KB	-rw-rw-rw-
test_glob.py	15.72 KB	-rw-rw-rw-
test_global.py	1.44 KB	-rw-rw-rw-
test_grammar.py	64.47 KB	-rw-rw-rw-
test_graphlib.py	8.59 KB	-rw-rw-rw-
test_grp.py	3.65 KB	-rw-rw-rw-
test_gzip.py	31.45 KB	-rw-rw-rw-
test_hash.py	11.79 KB	-rw-rw-rw-
test_hashlib.py	45.59 KB	-rw-rw-rw-
test_heapq.py	16.91 KB	-rw-rw-rw-
test_hmac.py	26.05 KB	-rw-rw-rw-
test_html.py	4.33 KB	-rw-rw-rw-
test_htmlparser.py	33.7 KB	-rw-rw-rw-
test_http_cookiejar.py	80.28 KB	-rw-rw-rw-
test_http_cookies.py	19.18 KB	-rw-rw-rw-
test_httplib.py	81.2 KB	-rw-rw-rw-
test_httpservers.py	54.65 KB	-rw-rw-rw-
test_idle.py	1.02 KB	-rw-rw-rw-
test_imaplib.py	43.19 KB	-rw-rw-rw-
test_imghdr.py	4.83 KB	-rw-rw-rw-
test_imp.py	18.38 KB	-rw-rw-rw-
test_index.py	8.64 KB	-rw-rw-rw-
test_inspect.py	175.5 KB	-rw-rw-rw-
test_int.py	21.27 KB	-rw-rw-rw-
test_int_literal.py	7.03 KB	-rw-rw-rw-
test_interpreters.py	23.21 KB	-rw-rw-rw-
test_io.py	175.17 KB	-rw-rw-rw-
test_ioctl.py	3.33 KB	-rw-rw-rw-
test_ipaddress.py	119.32 KB	-rw-rw-rw-
test_isinstance.py	13.31 KB	-rw-rw-rw-
test_iter.py	33.93 KB	-rw-rw-rw-
test_iterlen.py	7.32 KB	-rw-rw-rw-
test_itertools.py	108.41 KB	-rw-rw-rw-
test_keyword.py	1.27 KB	-rw-rw-rw-
test_keywordonlyarg.py	7.07 KB	-rw-rw-rw-
test_kqueue.py	9.01 KB	-rw-rw-rw-
test_largefile.py	10.26 KB	-rw-rw-rw-
test_lib2to3.py	327 B	-rw-rw-rw-
test_linecache.py	9.92 KB	-rw-rw-rw-
test_list.py	7.76 KB	-rw-rw-rw-
test_listcomps.py	4.33 KB	-rw-rw-rw-
test_lltrace.py	3.22 KB	-rw-rw-rw-
test_locale.py	25.29 KB	-rw-rw-rw-
test_logging.py	200.75 KB	-rw-rw-rw-
test_long.py	55.19 KB	-rw-rw-rw-
test_longexp.py	243 B	-rw-rw-rw-
test_lzma.py	90.07 KB	-rw-rw-rw-
test_mailbox.py	94.04 KB	-rw-rw-rw-
test_mailcap.py	10.25 KB	-rw-rw-rw-
test_marshal.py	21.04 KB	-rw-rw-rw-
test_math.py	92.69 KB	-rw-rw-rw-
test_memoryio.py	32.33 KB	-rw-rw-rw-
test_memoryview.py	22.01 KB	-rw-rw-rw-
test_metaclass.py	6.47 KB	-rw-rw-rw-
test_mimetypes.py	14.17 KB	-rw-rw-rw-
test_minidom.py	69.82 KB	-rw-rw-rw-
test_mmap.py	31.71 KB	-rw-rw-rw-
test_module.py	12.71 KB	-rw-rw-rw-
test_modulefinder.py	12.63 KB	-rw-rw-rw-
test_msilib.py	5.57 KB	-rw-rw-rw-
test_multibytecodec.py	16.15 KB	-rw-rw-rw-
test_multiprocessing_fork.py	496 B	-rw-rw-rw-
test_multiprocessing_forkserve...	408 B	-rw-rw-rw-
test_multiprocessing_main_hand...	11.86 KB	-rw-rw-rw-
test_multiprocessing_spawn.py	289 B	-rw-rw-rw-
test_named_expressions.py	21.21 KB	-rw-rw-rw-
test_netrc.py	6.17 KB	-rw-rw-rw-
test_nis.py	1.21 KB	-rw-rw-rw-
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Code Editor : test_memoryio.py

"""Unit tests for memory-based file-like objects.
StringIO -- for unicode strings
BytesIO -- for bytes
"""

import unittest
from test import support

import io
import _pyio as pyio
import pickle
import sys

class IntLike:
    def __init__(self, num):
        self._num = num
    def __index__(self):
        return self._num
    __int__ = __index__

class MemorySeekTestMixin:

def testInit(self):
        buf = self.buftype("1234567890")
        bytesIo = self.ioclass(buf)

def testRead(self):
        buf = self.buftype("1234567890")
        bytesIo = self.ioclass(buf)

self.assertEqual(buf[:1], bytesIo.read(1))
        self.assertEqual(buf[1:5], bytesIo.read(4))
        self.assertEqual(buf[5:], bytesIo.read(900))
        self.assertEqual(self.EOF, bytesIo.read())

def testReadNoArgs(self):
        buf = self.buftype("1234567890")
        bytesIo = self.ioclass(buf)

self.assertEqual(buf, bytesIo.read())
        self.assertEqual(self.EOF, bytesIo.read())

def testSeek(self):
        buf = self.buftype("1234567890")
        bytesIo = self.ioclass(buf)

bytesIo.read(5)
        bytesIo.seek(0)
        self.assertEqual(buf, bytesIo.read())

bytesIo.seek(3)
        self.assertEqual(buf[3:], bytesIo.read())
        self.assertRaises(TypeError, bytesIo.seek, 0.0)

def testTell(self):
        buf = self.buftype("1234567890")
        bytesIo = self.ioclass(buf)

self.assertEqual(0, bytesIo.tell())
        bytesIo.seek(5)
        self.assertEqual(5, bytesIo.tell())
        bytesIo.seek(10000)
        self.assertEqual(10000, bytesIo.tell())

class MemoryTestMixin:

def test_detach(self):
        buf = self.ioclass()
        self.assertRaises(self.UnsupportedOperation, buf.detach)

def write_ops(self, f, t):
        self.assertEqual(f.write(t("blah.")), 5)
        self.assertEqual(f.seek(0), 0)
        self.assertEqual(f.write(t("Hello.")), 6)
        self.assertEqual(f.tell(), 6)
        self.assertEqual(f.seek(5), 5)
        self.assertEqual(f.tell(), 5)
        self.assertEqual(f.write(t(" world\n\n\n")), 9)
        self.assertEqual(f.seek(0), 0)
        self.assertEqual(f.write(t("h")), 1)
        self.assertEqual(f.truncate(12), 12)
        self.assertEqual(f.tell(), 1)

def test_write(self):
        buf = self.buftype("hello world\n")
        memio = self.ioclass(buf)

self.write_ops(memio, self.buftype)
        self.assertEqual(memio.getvalue(), buf)
        memio = self.ioclass()
        self.write_ops(memio, self.buftype)
        self.assertEqual(memio.getvalue(), buf)
        self.assertRaises(TypeError, memio.write, None)
        memio.close()
        self.assertRaises(ValueError, memio.write, self.buftype(""))

def test_writelines(self):
        buf = self.buftype("1234567890")
        memio = self.ioclass()

self.assertEqual(memio.writelines([buf] * 100), None)
        self.assertEqual(memio.getvalue(), buf * 100)
        memio.writelines([])
        self.assertEqual(memio.getvalue(), buf * 100)
        memio = self.ioclass()
        self.assertRaises(TypeError, memio.writelines, [buf] + [1])
        self.assertEqual(memio.getvalue(), buf)
        self.assertRaises(TypeError, memio.writelines, None)
        memio.close()
        self.assertRaises(ValueError, memio.writelines, [])

def test_writelines_error(self):
        memio = self.ioclass()
        def error_gen():
            yield self.buftype('spam')
            raise KeyboardInterrupt

self.assertRaises(KeyboardInterrupt, memio.writelines, error_gen())

def test_truncate(self):
        buf = self.buftype("1234567890")
        memio = self.ioclass(buf)

self.assertRaises(ValueError, memio.truncate, -1)
        self.assertRaises(ValueError, memio.truncate, IntLike(-1))
        memio.seek(6)
        self.assertEqual(memio.truncate(IntLike(8)), 8)
        self.assertEqual(memio.getvalue(), buf[:8])
        self.assertEqual(memio.truncate(), 6)
        self.assertEqual(memio.getvalue(), buf[:6])
        self.assertEqual(memio.truncate(4), 4)
        self.assertEqual(memio.getvalue(), buf[:4])
        self.assertEqual(memio.tell(), 6)
        memio.seek(0, 2)
        memio.write(buf)
        self.assertEqual(memio.getvalue(), buf[:4] + buf)
        pos = memio.tell()
        self.assertEqual(memio.truncate(None), pos)
        self.assertEqual(memio.tell(), pos)
        self.assertRaises(TypeError, memio.truncate, '0')
        memio.close()
        self.assertRaises(ValueError, memio.truncate, 0)
        self.assertRaises(ValueError, memio.truncate, IntLike(0))

def test_init(self):
        buf = self.buftype("1234567890")
        memio = self.ioclass(buf)
        self.assertEqual(memio.getvalue(), buf)
        memio = self.ioclass(None)
        self.assertEqual(memio.getvalue(), self.EOF)
        memio.__init__(buf * 2)
        self.assertEqual(memio.getvalue(), buf * 2)
        memio.__init__(buf)
        self.assertEqual(memio.getvalue(), buf)
        self.assertRaises(TypeError, memio.__init__, [])

def test_read(self):
        buf = self.buftype("1234567890")
        memio = self.ioclass(buf)

self.assertEqual(memio.read(0), self.EOF)
        self.assertEqual(memio.read(1), buf[:1])
        self.assertEqual(memio.read(4), buf[1:5])
        self.assertEqual(memio.read(900), buf[5:])
        self.assertEqual(memio.read(), self.EOF)
        memio.seek(0)
        self.assertEqual(memio.read(IntLike(0)), self.EOF)
        self.assertEqual(memio.read(IntLike(1)), buf[:1])
        self.assertEqual(memio.read(IntLike(4)), buf[1:5])
        self.assertEqual(memio.read(IntLike(900)), buf[5:])
        memio.seek(0)
        self.assertEqual(memio.read(), buf)
        self.assertEqual(memio.read(), self.EOF)
        self.assertEqual(memio.tell(), 10)
        memio.seek(0)
        self.assertEqual(memio.read(-1), buf)
        memio.seek(0)
        self.assertEqual(memio.read(IntLike(-1)), buf)
        memio.seek(0)
        self.assertEqual(type(memio.read()), type(buf))
        memio.seek(100)
        self.assertEqual(type(memio.read()), type(buf))
        memio.seek(0)
        self.assertEqual(memio.read(None), buf)
        self.assertRaises(TypeError, memio.read, '')
        memio.seek(len(buf) + 1)
        self.assertEqual(memio.read(1), self.EOF)
        memio.seek(len(buf) + 1)
        self.assertEqual(memio.read(IntLike(1)), self.EOF)
        memio.seek(len(buf) + 1)
        self.assertEqual(memio.read(), self.EOF)
        memio.close()
        self.assertRaises(ValueError, memio.read)

def test_readline(self):
        buf = self.buftype("1234567890\n")
        memio = self.ioclass(buf * 2)

self.assertEqual(memio.readline(0), self.EOF)
        self.assertEqual(memio.readline(IntLike(0)), self.EOF)
        self.assertEqual(memio.readline(), buf)
        self.assertEqual(memio.readline(), buf)
        self.assertEqual(memio.readline(), self.EOF)
        memio.seek(0)
        self.assertEqual(memio.readline(5), buf[:5])
        self.assertEqual(memio.readline(5), buf[5:10])
        self.assertEqual(memio.readline(5), buf[10:15])
        memio.seek(0)
        self.assertEqual(memio.readline(IntLike(5)), buf[:5])
        self.assertEqual(memio.readline(IntLike(5)), buf[5:10])
        self.assertEqual(memio.readline(IntLike(5)), buf[10:15])
        memio.seek(0)
        self.assertEqual(memio.readline(-1), buf)
        memio.seek(0)
        self.assertEqual(memio.readline(IntLike(-1)), buf)
        memio.seek(0)
        self.assertEqual(memio.readline(0), self.EOF)
        self.assertEqual(memio.readline(IntLike(0)), self.EOF)
        # Issue #24989: Buffer overread
        memio.seek(len(buf) * 2 + 1)
        self.assertEqual(memio.readline(), self.EOF)

buf = self.buftype("1234567890\n")
        memio = self.ioclass((buf * 3)[:-1])
        self.assertEqual(memio.readline(), buf)
        self.assertEqual(memio.readline(), buf)
        self.assertEqual(memio.readline(), buf[:-1])
        self.assertEqual(memio.readline(), self.EOF)
        memio.seek(0)
        self.assertEqual(type(memio.readline()), type(buf))
        self.assertEqual(memio.readline(), buf)
        self.assertRaises(TypeError, memio.readline, '')
        memio.close()
        self.assertRaises(ValueError,  memio.readline)

def test_readlines(self):
        buf = self.buftype("1234567890\n")
        memio = self.ioclass(buf * 10)

self.assertEqual(memio.readlines(), [buf] * 10)
        memio.seek(5)
        self.assertEqual(memio.readlines(), [buf[5:]] + [buf] * 9)
        memio.seek(0)
        self.assertEqual(memio.readlines(15), [buf] * 2)
        memio.seek(0)
        self.assertEqual(memio.readlines(-1), [buf] * 10)
        memio.seek(0)
        self.assertEqual(memio.readlines(0), [buf] * 10)
        memio.seek(0)
        self.assertEqual(type(memio.readlines()[0]), type(buf))
        memio.seek(0)
        self.assertEqual(memio.readlines(None), [buf] * 10)
        self.assertRaises(TypeError, memio.readlines, '')
        # Issue #24989: Buffer overread
        memio.seek(len(buf) * 10 + 1)
        self.assertEqual(memio.readlines(), [])
        memio.close()
        self.assertRaises(ValueError, memio.readlines)

def test_iterator(self):
        buf = self.buftype("1234567890\n")
        memio = self.ioclass(buf * 10)

self.assertEqual(iter(memio), memio)
        self.assertTrue(hasattr(memio, '__iter__'))
        self.assertTrue(hasattr(memio, '__next__'))
        i = 0
        for line in memio:
            self.assertEqual(line, buf)
            i += 1
        self.assertEqual(i, 10)
        memio.seek(0)
        i = 0
        for line in memio:
            self.assertEqual(line, buf)
            i += 1
        self.assertEqual(i, 10)
        # Issue #24989: Buffer overread
        memio.seek(len(buf) * 10 + 1)
        self.assertEqual(list(memio), [])
        memio = self.ioclass(buf * 2)
        memio.close()
        self.assertRaises(ValueError, memio.__next__)

def test_getvalue(self):
        buf = self.buftype("1234567890")
        memio = self.ioclass(buf)

self.assertEqual(memio.getvalue(), buf)
        memio.read()
        self.assertEqual(memio.getvalue(), buf)
        self.assertEqual(type(memio.getvalue()), type(buf))
        memio = self.ioclass(buf * 1000)
        self.assertEqual(memio.getvalue()[-3:], self.buftype("890"))
        memio = self.ioclass(buf)
        memio.close()
        self.assertRaises(ValueError, memio.getvalue)

def test_seek(self):
        buf = self.buftype("1234567890")
        memio = self.ioclass(buf)

memio.read(5)
        self.assertRaises(ValueError, memio.seek, -1)
        self.assertRaises(ValueError, memio.seek, 1, -1)
        self.assertRaises(ValueError, memio.seek, 1, 3)
        self.assertEqual(memio.seek(0), 0)
        self.assertEqual(memio.seek(0, 0), 0)
        self.assertEqual(memio.read(), buf)
        self.assertEqual(memio.seek(3), 3)
        self.assertEqual(memio.seek(0, 1), 3)
        self.assertEqual(memio.read(), buf[3:])
        self.assertEqual(memio.seek(len(buf)), len(buf))
        self.assertEqual(memio.read(), self.EOF)
        memio.seek(len(buf) + 1)
        self.assertEqual(memio.read(), self.EOF)
        self.assertEqual(memio.seek(0, 2), len(buf))
        self.assertEqual(memio.read(), self.EOF)
        memio.close()
        self.assertRaises(ValueError, memio.seek, 0)

def test_overseek(self):
        buf = self.buftype("1234567890")
        memio = self.ioclass(buf)

self.assertEqual(memio.seek(len(buf) + 1), 11)
        self.assertEqual(memio.read(), self.EOF)
        self.assertEqual(memio.tell(), 11)
        self.assertEqual(memio.getvalue(), buf)
        memio.write(self.EOF)
        self.assertEqual(memio.getvalue(), buf)
        memio.write(buf)
        self.assertEqual(memio.getvalue(), buf + self.buftype('\0') + buf)

def test_tell(self):
        buf = self.buftype("1234567890")
        memio = self.ioclass(buf)

self.assertEqual(memio.tell(), 0)
        memio.seek(5)
        self.assertEqual(memio.tell(), 5)
        memio.seek(10000)
        self.assertEqual(memio.tell(), 10000)
        memio.close()
        self.assertRaises(ValueError, memio.tell)

def test_flush(self):
        buf = self.buftype("1234567890")
        memio = self.ioclass(buf)

self.assertEqual(memio.flush(), None)

def test_flags(self):
        memio = self.ioclass()

self.assertEqual(memio.writable(), True)
        self.assertEqual(memio.readable(), True)
        self.assertEqual(memio.seekable(), True)
        self.assertEqual(memio.isatty(), False)
        self.assertEqual(memio.closed, False)
        memio.close()
        self.assertRaises(ValueError, memio.writable)
        self.assertRaises(ValueError, memio.readable)
        self.assertRaises(ValueError, memio.seekable)
        self.assertRaises(ValueError, memio.isatty)
        self.assertEqual(memio.closed, True)

def test_subclassing(self):
        buf = self.buftype("1234567890")
        def test1():
            class MemIO(self.ioclass):
                pass
            m = MemIO(buf)
            return m.getvalue()
        def test2():
            class MemIO(self.ioclass):
                def __init__(me, a, b):
                    self.ioclass.__init__(me, a)
            m = MemIO(buf, None)
            return m.getvalue()
        self.assertEqual(test1(), buf)
        self.assertEqual(test2(), buf)

def test_instance_dict_leak(self):
        # Test case for issue #6242.
        # This will be caught by regrtest.py -R if this leak.
        for _ in range(100):
            memio = self.ioclass()
            memio.foo = 1

def test_pickling(self):
        buf = self.buftype("1234567890")
        memio = self.ioclass(buf)
        memio.foo = 42
        memio.seek(2)

class PickleTestMemIO(self.ioclass):
            def __init__(me, initvalue, foo):
                self.ioclass.__init__(me, initvalue)
                me.foo = foo
            # __getnewargs__ is undefined on purpose. This checks that PEP 307
            # is used to provide pickling support.

# Pickle expects the class to be on the module level. Here we use a
        # little hack to allow the PickleTestMemIO class to derive from
        # self.ioclass without having to define all combinations explicitly on
        # the module-level.
        import __main__
        PickleTestMemIO.__module__ = '__main__'
        PickleTestMemIO.__qualname__ = PickleTestMemIO.__name__
        __main__.PickleTestMemIO = PickleTestMemIO
        submemio = PickleTestMemIO(buf, 80)
        submemio.seek(2)

# We only support pickle protocol 2 and onward since we use extended
        # __reduce__ API of PEP 307 to provide pickling support.
        for proto in range(2, pickle.HIGHEST_PROTOCOL + 1):
            for obj in (memio, submemio):
                obj2 = pickle.loads(pickle.dumps(obj, protocol=proto))
                self.assertEqual(obj.getvalue(), obj2.getvalue())
                self.assertEqual(obj.__class__, obj2.__class__)
                self.assertEqual(obj.foo, obj2.foo)
                self.assertEqual(obj.tell(), obj2.tell())
                obj2.close()
                self.assertRaises(ValueError, pickle.dumps, obj2, proto)
        del __main__.PickleTestMemIO

class PyBytesIOTest(MemoryTestMixin, MemorySeekTestMixin, unittest.TestCase):
    # Test _pyio.BytesIO; class also inherited for testing C implementation

UnsupportedOperation = pyio.UnsupportedOperation

@staticmethod
    def buftype(s):
        return s.encode("ascii")
    ioclass = pyio.BytesIO
    EOF = b""

def test_getbuffer(self):
        memio = self.ioclass(b"1234567890")
        buf = memio.getbuffer()
        self.assertEqual(bytes(buf), b"1234567890")
        memio.seek(5)
        buf = memio.getbuffer()
        self.assertEqual(bytes(buf), b"1234567890")
        # Trying to change the size of the BytesIO while a buffer is exported
        # raises a BufferError.
        self.assertRaises(BufferError, memio.write, b'x' * 100)
        self.assertRaises(BufferError, memio.truncate)
        self.assertRaises(BufferError, memio.close)
        self.assertFalse(memio.closed)
        # Mutating the buffer updates the BytesIO
        buf[3:6] = b"abc"
        self.assertEqual(bytes(buf), b"123abc7890")
        self.assertEqual(memio.getvalue(), b"123abc7890")
        # After the buffer gets released, we can resize and close the BytesIO
        # again
        del buf
        support.gc_collect()
        memio.truncate()
        memio.close()
        self.assertRaises(ValueError, memio.getbuffer)

def test_read1(self):
        buf = self.buftype("1234567890")
        self.assertEqual(self.ioclass(buf).read1(), buf)
        self.assertEqual(self.ioclass(buf).read1(-1), buf)

def test_readinto(self):
        buf = self.buftype("1234567890")
        memio = self.ioclass(buf)

b = bytearray(b"hello")
        self.assertEqual(memio.readinto(b), 5)
        self.assertEqual(b, b"12345")
        self.assertEqual(memio.readinto(b), 5)
        self.assertEqual(b, b"67890")
        self.assertEqual(memio.readinto(b), 0)
        self.assertEqual(b, b"67890")
        b = bytearray(b"hello world")
        memio.seek(0)
        self.assertEqual(memio.readinto(b), 10)
        self.assertEqual(b, b"1234567890d")
        b = bytearray(b"")
        memio.seek(0)
        self.assertEqual(memio.readinto(b), 0)
        self.assertEqual(b, b"")
        self.assertRaises(TypeError, memio.readinto, '')
        import array
        a = array.array('b', b"hello world")
        memio = self.ioclass(buf)
        memio.readinto(a)
        self.assertEqual(a.tobytes(), b"1234567890d")
        memio.close()
        self.assertRaises(ValueError, memio.readinto, b)
        memio = self.ioclass(b"123")
        b = bytearray()
        memio.seek(42)
        memio.readinto(b)
        self.assertEqual(b, b"")

def test_relative_seek(self):
        buf = self.buftype("1234567890")
        memio = self.ioclass(buf)

self.assertEqual(memio.seek(-1, 1), 0)
        self.assertEqual(memio.seek(3, 1), 3)
        self.assertEqual(memio.seek(-4, 1), 0)
        self.assertEqual(memio.seek(-1, 2), 9)
        self.assertEqual(memio.seek(1, 1), 10)
        self.assertEqual(memio.seek(1, 2), 11)
        memio.seek(-3, 2)
        self.assertEqual(memio.read(), buf[-3:])
        memio.seek(0)
        memio.seek(1, 1)
        self.assertEqual(memio.read(), buf[1:])

def test_unicode(self):
        memio = self.ioclass()

self.assertRaises(TypeError, self.ioclass, "1234567890")
        self.assertRaises(TypeError, memio.write, "1234567890")
        self.assertRaises(TypeError, memio.writelines, ["1234567890"])

def test_bytes_array(self):
        buf = b"1234567890"
        import array
        a = array.array('b', list(buf))
        memio = self.ioclass(a)
        self.assertEqual(memio.getvalue(), buf)
        self.assertEqual(memio.write(a), 10)
        self.assertEqual(memio.getvalue(), buf)

def test_issue5449(self):
        buf = self.buftype("1234567890")
        self.ioclass(initial_bytes=buf)
        self.assertRaises(TypeError, self.ioclass, buf, foo=None)

class TextIOTestMixin:

def test_newlines_property(self):
        memio = self.ioclass(newline=None)
        # The C StringIO decodes newlines in write() calls, but the Python
        # implementation only does when reading.  This function forces them to
        # be decoded for testing.
        def force_decode():
            memio.seek(0)
            memio.read()
        self.assertEqual(memio.newlines, None)
        memio.write("a\n")
        force_decode()
        self.assertEqual(memio.newlines, "\n")
        memio.write("b\r\n")
        force_decode()
        self.assertEqual(memio.newlines, ("\n", "\r\n"))
        memio.write("c\rd")
        force_decode()
        self.assertEqual(memio.newlines, ("\r", "\n", "\r\n"))

def test_relative_seek(self):
        memio = self.ioclass()

self.assertRaises(OSError, memio.seek, -1, 1)
        self.assertRaises(OSError, memio.seek, 3, 1)
        self.assertRaises(OSError, memio.seek, -3, 1)
        self.assertRaises(OSError, memio.seek, -1, 2)
        self.assertRaises(OSError, memio.seek, 1, 1)
        self.assertRaises(OSError, memio.seek, 1, 2)

def test_textio_properties(self):
        memio = self.ioclass()

# These are just dummy values but we nevertheless check them for fear
        # of unexpected breakage.
        self.assertIsNone(memio.encoding)
        self.assertIsNone(memio.errors)
        self.assertFalse(memio.line_buffering)

def test_newline_default(self):
        memio = self.ioclass("a\nb\r\nc\rd")
        self.assertEqual(list(memio), ["a\n", "b\r\n", "c\rd"])
        self.assertEqual(memio.getvalue(), "a\nb\r\nc\rd")

memio = self.ioclass()
        self.assertEqual(memio.write("a\nb\r\nc\rd"), 8)
        memio.seek(0)
        self.assertEqual(list(memio), ["a\n", "b\r\n", "c\rd"])
        self.assertEqual(memio.getvalue(), "a\nb\r\nc\rd")

def test_newline_none(self):
        # newline=None
        memio = self.ioclass("a\nb\r\nc\rd", newline=None)
        self.assertEqual(list(memio), ["a\n", "b\n", "c\n", "d"])
        memio.seek(0)
        self.assertEqual(memio.read(1), "a")
        self.assertEqual(memio.read(2), "\nb")
        self.assertEqual(memio.read(2), "\nc")
        self.assertEqual(memio.read(1), "\n")
        self.assertEqual(memio.getvalue(), "a\nb\nc\nd")

memio = self.ioclass(newline=None)
        self.assertEqual(2, memio.write("a\n"))
        self.assertEqual(3, memio.write("b\r\n"))
        self.assertEqual(3, memio.write("c\rd"))
        memio.seek(0)
        self.assertEqual(memio.read(), "a\nb\nc\nd")
        self.assertEqual(memio.getvalue(), "a\nb\nc\nd")

memio = self.ioclass("a\r\nb", newline=None)
        self.assertEqual(memio.read(3), "a\nb")

def test_newline_empty(self):
        # newline=""
        memio = self.ioclass("a\nb\r\nc\rd", newline="")
        self.assertEqual(list(memio), ["a\n", "b\r\n", "c\r", "d"])
        memio.seek(0)
        self.assertEqual(memio.read(4), "a\nb\r")
        self.assertEqual(memio.read(2), "\nc")
        self.assertEqual(memio.read(1), "\r")
        self.assertEqual(memio.getvalue(), "a\nb\r\nc\rd")

memio = self.ioclass(newline="")
        self.assertEqual(2, memio.write("a\n"))
        self.assertEqual(2, memio.write("b\r"))
        self.assertEqual(2, memio.write("\nc"))
        self.assertEqual(2, memio.write("\rd"))
        memio.seek(0)
        self.assertEqual(list(memio), ["a\n", "b\r\n", "c\r", "d"])
        self.assertEqual(memio.getvalue(), "a\nb\r\nc\rd")

def test_newline_lf(self):
        # newline="\n"
        memio = self.ioclass("a\nb\r\nc\rd", newline="\n")
        self.assertEqual(list(memio), ["a\n", "b\r\n", "c\rd"])
        self.assertEqual(memio.getvalue(), "a\nb\r\nc\rd")

memio = self.ioclass(newline="\n")
        self.assertEqual(memio.write("a\nb\r\nc\rd"), 8)
        memio.seek(0)
        self.assertEqual(list(memio), ["a\n", "b\r\n", "c\rd"])
        self.assertEqual(memio.getvalue(), "a\nb\r\nc\rd")

def test_newline_cr(self):
        # newline="\r"
        memio = self.ioclass("a\nb\r\nc\rd", newline="\r")
        self.assertEqual(memio.read(), "a\rb\r\rc\rd")
        memio.seek(0)
        self.assertEqual(list(memio), ["a\r", "b\r", "\r", "c\r", "d"])
        self.assertEqual(memio.getvalue(), "a\rb\r\rc\rd")

memio = self.ioclass(newline="\r")
        self.assertEqual(memio.write("a\nb\r\nc\rd"), 8)
        memio.seek(0)
        self.assertEqual(list(memio), ["a\r", "b\r", "\r", "c\r", "d"])
        memio.seek(0)
        self.assertEqual(memio.readlines(), ["a\r", "b\r", "\r", "c\r", "d"])
        self.assertEqual(memio.getvalue(), "a\rb\r\rc\rd")

def test_newline_crlf(self):
        # newline="\r\n"
        memio = self.ioclass("a\nb\r\nc\rd", newline="\r\n")
        self.assertEqual(memio.read(), "a\r\nb\r\r\nc\rd")
        memio.seek(0)
        self.assertEqual(list(memio), ["a\r\n", "b\r\r\n", "c\rd"])
        memio.seek(0)
        self.assertEqual(memio.readlines(), ["a\r\n", "b\r\r\n", "c\rd"])
        self.assertEqual(memio.getvalue(), "a\r\nb\r\r\nc\rd")

memio = self.ioclass(newline="\r\n")
        self.assertEqual(memio.write("a\nb\r\nc\rd"), 8)
        memio.seek(0)
        self.assertEqual(list(memio), ["a\r\n", "b\r\r\n", "c\rd"])
        self.assertEqual(memio.getvalue(), "a\r\nb\r\r\nc\rd")

def test_issue5265(self):
        # StringIO can duplicate newlines in universal newlines mode
        memio = self.ioclass("a\r\nb\r\n", newline=None)
        self.assertEqual(memio.read(5), "a\nb\n")
        self.assertEqual(memio.getvalue(), "a\nb\n")

def test_newline_argument(self):
        self.assertRaises(TypeError, self.ioclass, newline=b"\n")
        self.assertRaises(ValueError, self.ioclass, newline="error")
        # These should not raise an error
        for newline in (None, "", "\n", "\r", "\r\n"):
            self.ioclass(newline=newline)

class PyStringIOTest(MemoryTestMixin, MemorySeekTestMixin,
                     TextIOTestMixin, unittest.TestCase):
    buftype = str
    ioclass = pyio.StringIO
    UnsupportedOperation = pyio.UnsupportedOperation
    EOF = ""

def test_lone_surrogates(self):
        # Issue #20424
        memio = self.ioclass('\ud800')
        self.assertEqual(memio.read(), '\ud800')

memio = self.ioclass()
        memio.write('\ud800')
        self.assertEqual(memio.getvalue(), '\ud800')

class PyStringIOPickleTest(TextIOTestMixin, unittest.TestCase):
    """Test if pickle restores properly the internal state of StringIO.
    """
    buftype = str
    UnsupportedOperation = pyio.UnsupportedOperation
    EOF = ""

class ioclass(pyio.StringIO):
        def __new__(cls, *args, **kwargs):
            return pickle.loads(pickle.dumps(pyio.StringIO(*args, **kwargs)))
        def __init__(self, *args, **kwargs):
            pass

class CBytesIOTest(PyBytesIOTest):
    ioclass = io.BytesIO
    UnsupportedOperation = io.UnsupportedOperation

def test_getstate(self):
        memio = self.ioclass()
        state = memio.__getstate__()
        self.assertEqual(len(state), 3)
        bytearray(state[0]) # Check if state[0] supports the buffer interface.
        self.assertIsInstance(state[1], int)
        if state[2] is not None:
            self.assertIsInstance(state[2], dict)
        memio.close()
        self.assertRaises(ValueError, memio.__getstate__)

def test_setstate(self):
        # This checks whether __setstate__ does proper input validation.
        memio = self.ioclass()
        memio.__setstate__((b"no error", 0, None))
        memio.__setstate__((bytearray(b"no error"), 0, None))
        memio.__setstate__((b"no error", 0, {'spam': 3}))
        self.assertRaises(ValueError, memio.__setstate__, (b"", -1, None))
        self.assertRaises(TypeError, memio.__setstate__, ("unicode", 0, None))
        self.assertRaises(TypeError, memio.__setstate__, (b"", 0.0, None))
        self.assertRaises(TypeError, memio.__setstate__, (b"", 0, 0))
        self.assertRaises(TypeError, memio.__setstate__, (b"len-test", 0))
        self.assertRaises(TypeError, memio.__setstate__)
        self.assertRaises(TypeError, memio.__setstate__, 0)
        memio.close()
        self.assertRaises(ValueError, memio.__setstate__, (b"closed", 0, None))

check_sizeof = support.check_sizeof

@support.cpython_only
    def test_sizeof(self):
        basesize = support.calcobjsize('P2n2Pn')
        check = self.check_sizeof
        self.assertEqual(object.__sizeof__(io.BytesIO()), basesize)
        check(io.BytesIO(), basesize )
        n = 1000  # use a variable to prevent constant folding
        check(io.BytesIO(b'a' * n), basesize + sys.getsizeof(b'a' * n))

# Various tests of copy-on-write behaviour for BytesIO.

def _test_cow_mutation(self, mutation):
        # Common code for all BytesIO copy-on-write mutation tests.
        imm = b' ' * 1024
        old_rc = sys.getrefcount(imm)
        memio = self.ioclass(imm)
        self.assertEqual(sys.getrefcount(imm), old_rc + 1)
        mutation(memio)
        self.assertEqual(sys.getrefcount(imm), old_rc)

@support.cpython_only
    def test_cow_truncate(self):
        # Ensure truncate causes a copy.
        def mutation(memio):
            memio.truncate(1)
        self._test_cow_mutation(mutation)

@support.cpython_only
    def test_cow_write(self):
        # Ensure write that would not cause a resize still results in a copy.
        def mutation(memio):
            memio.seek(0)
            memio.write(b'foo')
        self._test_cow_mutation(mutation)

@support.cpython_only
    def test_cow_setstate(self):
        # __setstate__ should cause buffer to be released.
        memio = self.ioclass(b'foooooo')
        state = memio.__getstate__()
        def mutation(memio):
            memio.__setstate__(state)
        self._test_cow_mutation(mutation)

@support.cpython_only
    def test_cow_mutable(self):
        # BytesIO should accept only Bytes for copy-on-write sharing, since
        # arbitrary buffer-exporting objects like bytearray() aren't guaranteed
        # to be immutable.
        ba = bytearray(1024)
        old_rc = sys.getrefcount(ba)
        memio = self.ioclass(ba)
        self.assertEqual(sys.getrefcount(ba), old_rc)

class CStringIOTest(PyStringIOTest):
    ioclass = io.StringIO
    UnsupportedOperation = io.UnsupportedOperation

# XXX: For the Python version of io.StringIO, this is highly
    # dependent on the encoding used for the underlying buffer.
    def test_widechar(self):
        buf = self.buftype("\U0002030a\U00020347")
        memio = self.ioclass(buf)

self.assertEqual(memio.getvalue(), buf)
        self.assertEqual(memio.write(buf), len(buf))
        self.assertEqual(memio.tell(), len(buf))
        self.assertEqual(memio.getvalue(), buf)
        self.assertEqual(memio.write(buf), len(buf))
        self.assertEqual(memio.tell(), len(buf) * 2)
        self.assertEqual(memio.getvalue(), buf + buf)

def test_getstate(self):
        memio = self.ioclass()
        state = memio.__getstate__()
        self.assertEqual(len(state), 4)
        self.assertIsInstance(state[0], str)
        self.assertIsInstance(state[1], str)
        self.assertIsInstance(state[2], int)
        if state[3] is not None:
            self.assertIsInstance(state[3], dict)
        memio.close()
        self.assertRaises(ValueError, memio.__getstate__)

def test_setstate(self):
        # This checks whether __setstate__ does proper input validation.
        memio = self.ioclass()
        memio.__setstate__(("no error", "\n", 0, None))
        memio.__setstate__(("no error", "", 0, {'spam': 3}))
        self.assertRaises(ValueError, memio.__setstate__, ("", "f", 0, None))
        self.assertRaises(ValueError, memio.__setstate__, ("", "", -1, None))
        self.assertRaises(TypeError, memio.__setstate__, (b"", "", 0, None))
        self.assertRaises(TypeError, memio.__setstate__, ("", b"", 0, None))
        self.assertRaises(TypeError, memio.__setstate__, ("", "", 0.0, None))
        self.assertRaises(TypeError, memio.__setstate__, ("", "", 0, 0))
        self.assertRaises(TypeError, memio.__setstate__, ("len-test", 0))
        self.assertRaises(TypeError, memio.__setstate__)
        self.assertRaises(TypeError, memio.__setstate__, 0)
        memio.close()
        self.assertRaises(ValueError, memio.__setstate__, ("closed", "", 0, None))

class CStringIOPickleTest(PyStringIOPickleTest):
    UnsupportedOperation = io.UnsupportedOperation

class ioclass(io.StringIO):
        def __new__(cls, *args, **kwargs):
            return pickle.loads(pickle.dumps(io.StringIO(*args, **kwargs)))
        def __init__(self, *args, **kwargs):
            pass

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

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Code Editor : test_memoryio.py