Gecko [ beriskala.com ]

Name	Size	Permission	Date
__pycache__	[ DIR ]	drwxr-xr-x	2026-05-01 04:20
audiodata	[ DIR ]	drwxr-xr-x	2026-05-01 04:20
capath	[ DIR ]	drwxr-xr-x	2026-05-01 04:20
cjkencodings	[ DIR ]	drwxr-xr-x	2026-05-01 04:20
data	[ DIR ]	drwxr-xr-x	2026-05-01 04:20
decimaltestdata	[ DIR ]	drwxr-xr-x	2026-05-01 04:20
encoded_modules	[ DIR ]	drwxr-xr-x	2026-05-01 04:20
imghdrdata	[ DIR ]	drwxr-xr-x	2026-05-01 04:20
namespace_pkgs	[ DIR ]	drwxr-xr-x	2026-05-01 04:20
sndhdrdata	[ DIR ]	drwxr-xr-x	2026-05-01 04:20
subprocessdata	[ DIR ]	drwxr-xr-x	2026-05-01 04:20
support	[ DIR ]	drwxr-xr-x	2026-05-01 04:20
test_email	[ DIR ]	drwxr-xr-x	2026-05-01 04:20
test_importlib	[ DIR ]	drwxr-xr-x	2026-05-01 04:20
test_json	[ DIR ]	drwxr-xr-x	2026-05-01 04:20
tracedmodules	[ DIR ]	drwxr-xr-x	2026-05-01 04:20
xmltestdata	[ DIR ]	drwxr-xr-x	2026-05-01 04:20
185test.db	16 KB	-rw-r--r--	2017-09-19 12:02
Sine-1000Hz-300ms.aif	60.25 KB	-rw-r--r--	2017-09-19 12:02
__init__.py	47 B	-rw-r--r--	2024-04-17 20:28
__main__.py	474 B	-rw-r--r--	2024-04-17 20:28
audiotests.py	9.34 KB	-rw-r--r--	2024-04-17 20:28
autotest.py	211 B	-rw-r--r--	2024-04-17 20:28
bad_coding.py	24 B	-rw-r--r--	2024-04-17 20:28
bad_coding2.py	30 B	-rw-r--r--	2024-04-17 20:28
badcert.pem	1.88 KB	-rw-r--r--	2017-09-19 12:02
badkey.pem	2.11 KB	-rw-r--r--	2017-09-19 12:02
badsyntax_3131.py	32 B	-rw-r--r--	2024-04-17 20:28
badsyntax_future3.py	172 B	-rw-r--r--	2024-04-17 20:28
badsyntax_future4.py	153 B	-rw-r--r--	2024-04-17 20:28
badsyntax_future5.py	184 B	-rw-r--r--	2024-04-17 20:28
badsyntax_future6.py	161 B	-rw-r--r--	2024-04-17 20:28
badsyntax_future7.py	196 B	-rw-r--r--	2024-04-17 20:28
badsyntax_future8.py	122 B	-rw-r--r--	2024-04-17 20:28
badsyntax_future9.py	142 B	-rw-r--r--	2024-04-17 20:28
badsyntax_pep3120.py	14 B	-rw-r--r--	2024-04-17 20:28
buffer_tests.py	10.79 KB	-rw-r--r--	2024-04-17 20:28
cfgparser.1	21 B	-rw-r--r--	2017-09-19 12:02
cfgparser.2	19.02 KB	-rw-r--r--	2017-09-19 12:02
cfgparser.3	1.55 KB	-rw-r--r--	2017-09-19 12:02
check_soundcard.vbs	411 B	-rw-r--r--	2017-09-19 12:02
cmath_testcases.txt	133.86 KB	-rw-r--r--	2017-09-19 12:02
coding20731.py	18 B	-rw-r--r--	2024-04-17 20:28
curses_tests.py	1.22 KB	-rwxr-xr-x	2024-04-17 20:28
datetimetester.py	146.82 KB	-rw-r--r--	2024-04-17 20:28
dh1024.pem	300 B	-rw-r--r--	2017-09-19 12:02
dis_module.py	76 B	-rw-r--r--	2024-04-17 20:28
doctest_aliases.py	240 B	-rw-r--r--	2024-04-17 20:28
double_const.py	1.18 KB	-rw-r--r--	2024-04-17 20:28
empty.vbs	70 B	-rw-r--r--	2017-09-19 12:02
exception_hierarchy.txt	1.69 KB	-rw-r--r--	2017-09-19 12:02
floating_points.txt	15.92 KB	-rw-r--r--	2017-09-19 12:02
fork_wait.py	2.1 KB	-rw-r--r--	2024-04-17 20:28
formatfloat_testcases.txt	7.45 KB	-rw-r--r--	2017-09-19 12:02
future_test1.py	229 B	-rw-r--r--	2024-04-17 20:28
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gdb_sample.py	153 B	-rw-r--r--	2024-04-17 20:28
ieee754.txt	3.21 KB	-rw-r--r--	2017-09-19 12:02
inspect_fodder.py	854 B	-rw-r--r--	2024-04-17 20:28
inspect_fodder2.py	1.39 KB	-rw-r--r--	2024-04-17 20:28
keycert.passwd.pem	1.79 KB	-rw-r--r--	2017-09-19 12:02
keycert.pem	1.74 KB	-rw-r--r--	2017-09-19 12:02
keycert2.pem	1.75 KB	-rw-r--r--	2017-09-19 12:02
list_tests.py	17.26 KB	-rw-r--r--	2024-04-17 20:28
lock_tests.py	25.47 KB	-rw-r--r--	2024-04-17 20:28
mailcap.txt	1.24 KB	-rw-r--r--	2017-09-19 12:02
make_ssl_certs.py	1.84 KB	-rw-r--r--	2024-04-17 20:28
mapping_tests.py	21.5 KB	-rw-r--r--	2024-04-17 20:28
math_testcases.txt	23.19 KB	-rw-r--r--	2017-09-19 12:02
memory_watchdog.py	859 B	-rw-r--r--	2024-04-17 20:28
mime.types	47.37 KB	-rw-r--r--	2017-09-19 12:02
mock_socket.py	3.32 KB	-rw-r--r--	2024-04-17 20:28
mp_fork_bomb.py	323 B	-rw-r--r--	2024-04-17 20:28
multibytecodec_support.py	14.25 KB	-rw-r--r--	2024-04-17 20:28
nokia.pem	1.88 KB	-rw-r--r--	2017-09-19 12:02
nullbytecert.pem	5.31 KB	-rw-r--r--	2017-09-19 12:02
nullcert.pem	0 B	-rw-r--r--	2017-09-19 12:02
outstanding_bugs.py	370 B	-rw-r--r--	2024-04-17 20:28
pickletester.py	60.31 KB	-rw-r--r--	2024-04-17 20:28
profilee.py	2.97 KB	-rw-r--r--	2024-04-17 20:28
pstats.pck	65.05 KB	-rw-r--r--	2017-09-19 12:02
pyclbr_input.py	648 B	-rw-r--r--	2024-04-17 20:28
pydoc_mod.py	461 B	-rw-r--r--	2024-04-17 20:28
pydocfodder.py	6.18 KB	-rw-r--r--	2024-04-17 20:28
pystone.py	7.22 KB	-rwxr-xr-x	2024-04-17 20:28
randv2_32.pck	7.34 KB	-rw-r--r--	2017-09-19 12:02
randv2_64.pck	7.19 KB	-rw-r--r--	2017-09-19 12:02
randv3.pck	7.82 KB	-rw-r--r--	2017-09-19 12:02
re_tests.py	31.06 KB	-rwxr-xr-x	2024-04-17 20:28
regrtest.py	63.54 KB	-rwxr-xr-x	2024-04-17 20:28
relimport.py	27 B	-rw-r--r--	2024-04-17 20:28
reperf.py	538 B	-rw-r--r--	2024-04-17 20:28
sample_doctest.py	1.02 KB	-rw-r--r--	2024-04-17 20:28
sample_doctest_no_docstrings.py	227 B	-rw-r--r--	2024-04-17 20:28
sample_doctest_no_doctests.py	269 B	-rw-r--r--	2024-04-17 20:28
script_helper.py	5.22 KB	-rw-r--r--	2024-04-17 20:28
selfsigned_pythontestdotnet.pem	956 B	-rw-r--r--	2017-09-19 12:02
seq_tests.py	13.49 KB	-rw-r--r--	2024-04-17 20:28
sgml_input.html	8.1 KB	-rw-r--r--	2017-09-19 12:02
sha256.pem	8.15 KB	-rw-r--r--	2017-09-19 12:02
sortperf.py	4.69 KB	-rw-r--r--	2024-04-17 20:28
ssl_cert.pem	867 B	-rw-r--r--	2017-09-19 12:02
ssl_key.passwd.pem	963 B	-rw-r--r--	2017-09-19 12:02
ssl_key.pem	916 B	-rw-r--r--	2017-09-19 12:02
ssl_servers.py	6.82 KB	-rw-r--r--	2024-04-17 20:28
string_tests.py	62.74 KB	-rw-r--r--	2024-04-17 20:28
test___all__.py	3.86 KB	-rw-r--r--	2024-04-17 20:28
test___future__.py	2.44 KB	-rw-r--r--	2024-04-17 20:28
test__locale.py	6.89 KB	-rw-r--r--	2024-04-17 20:28
test__osx_support.py	11.41 KB	-rw-r--r--	2024-04-17 20:28
test_abc.py	12.76 KB	-rw-r--r--	2024-04-17 20:28
test_abstract_numbers.py	1.49 KB	-rw-r--r--	2024-04-17 20:28
test_aifc.py	14.48 KB	-rw-r--r--	2024-04-17 20:28
test_argparse.py	158.6 KB	-rw-r--r--	2024-04-17 20:28
test_array.py	43.88 KB	-rw-r--r--	2024-04-17 20:28
test_ast.py	43.49 KB	-rw-r--r--	2024-04-17 20:28
test_asynchat.py	9.08 KB	-rw-r--r--	2024-04-17 20:28
test_asyncore.py	26.05 KB	-rw-r--r--	2024-04-17 20:28
test_atexit.py	3.53 KB	-rw-r--r--	2024-04-17 20:28
test_audioop.py	17.39 KB	-rw-r--r--	2024-04-17 20:28
test_augassign.py	7.44 KB	-rw-r--r--	2024-04-17 20:28
test_base64.py	14.34 KB	-rw-r--r--	2024-04-17 20:28
test_bigaddrspace.py	2.92 KB	-rw-r--r--	2024-04-17 20:28
test_bigmem.py	44.18 KB	-rw-r--r--	2024-04-17 20:28
test_binascii.py	9.94 KB	-rw-r--r--	2024-04-17 20:28
test_binhex.py	1.47 KB	-rw-r--r--	2024-04-17 20:28
test_binop.py	12.36 KB	-rw-r--r--	2024-04-17 20:28
test_bisect.py	13.65 KB	-rw-r--r--	2024-04-17 20:28
test_bool.py	11.81 KB	-rw-r--r--	2024-04-17 20:28
test_buffer.py	155.09 KB	-rw-r--r--	2024-04-17 20:28
test_bufio.py	2.54 KB	-rw-r--r--	2024-04-17 20:28
test_builtin.py	54.84 KB	-rw-r--r--	2024-04-17 20:28
test_bytes.py	52.86 KB	-rw-r--r--	2024-04-17 20:28
test_bz2.py	30.8 KB	-rw-r--r--	2024-04-17 20:28
test_calendar.py	38.7 KB	-rw-r--r--	2024-04-17 20:28
test_call.py	3.08 KB	-rw-r--r--	2024-04-17 20:28
test_capi.py	13.81 KB	-rw-r--r--	2024-04-17 20:28
test_cgi.py	17.34 KB	-rw-r--r--	2024-04-17 20:28
test_cgitb.py	2.49 KB	-rw-r--r--	2024-04-17 20:28
test_charmapcodec.py	1.75 KB	-rw-r--r--	2024-04-17 20:28
test_class.py	13.79 KB	-rw-r--r--	2024-04-17 20:28
test_cmath.py	20.38 KB	-rw-r--r--	2024-04-17 20:28
test_cmd.py	6.08 KB	-rw-r--r--	2024-04-17 20:28
test_cmd_line.py	15.35 KB	-rw-r--r--	2024-04-17 20:28
test_cmd_line_script.py	16.95 KB	-rw-r--r--	2024-04-17 20:28
test_code.py	3.54 KB	-rw-r--r--	2024-04-17 20:28
test_code_module.py	2.42 KB	-rw-r--r--	2024-04-17 20:28
test_codeccallbacks.py	33.17 KB	-rw-r--r--	2024-04-17 20:28
test_codecencodings_cn.py	3.38 KB	-rw-r--r--	2024-04-17 20:28
test_codecencodings_hk.py	775 B	-rw-r--r--	2024-04-17 20:28
test_codecencodings_iso2022.py	1.43 KB	-rw-r--r--	2024-04-17 20:28
test_codecencodings_jp.py	4.86 KB	-rw-r--r--	2024-04-17 20:28
test_codecencodings_kr.py	3.03 KB	-rw-r--r--	2024-04-17 20:28
test_codecencodings_tw.py	755 B	-rw-r--r--	2024-04-17 20:28
test_codecmaps_cn.py	930 B	-rw-r--r--	2024-04-17 20:28
test_codecmaps_hk.py	505 B	-rw-r--r--	2024-04-17 20:28
test_codecmaps_jp.py	1.88 KB	-rw-r--r--	2024-04-17 20:28
test_codecmaps_kr.py	1.34 KB	-rw-r--r--	2024-04-17 20:28
test_codecmaps_tw.py	880 B	-rw-r--r--	2024-04-17 20:28
test_codecs.py	96.02 KB	-rw-r--r--	2024-04-17 20:28
test_codeop.py	7.45 KB	-rw-r--r--	2024-04-17 20:28
test_coding.py	2.51 KB	-rw-r--r--	2024-04-17 20:28
test_collections.py	54.31 KB	-rw-r--r--	2024-04-17 20:28
test_colorsys.py	2.77 KB	-rw-r--r--	2024-04-17 20:28
test_compare.py	1.63 KB	-rw-r--r--	2024-04-17 20:28
test_compile.py	18.62 KB	-rw-r--r--	2024-04-17 20:28
test_compileall.py	15.73 KB	-rw-r--r--	2024-04-17 20:28
test_complex.py	27.09 KB	-rw-r--r--	2024-04-17 20:28
test_concurrent_futures.py	22.57 KB	-rw-r--r--	2024-04-17 20:28
test_configparser.py	69.26 KB	-rw-r--r--	2024-04-17 20:28
test_contains.py	2.58 KB	-rw-r--r--	2024-04-17 20:28
test_contextlib.py	21.39 KB	-rw-r--r--	2024-04-17 20:28
test_copy.py	21.9 KB	-rw-r--r--	2024-04-17 20:28
test_copyreg.py	4.12 KB	-rw-r--r--	2024-04-17 20:28
test_cprofile.py	5.32 KB	-rw-r--r--	2024-04-17 20:28
test_crashers.py	1.18 KB	-rw-r--r--	2024-04-17 20:28
test_crypt.py	1.24 KB	-rw-r--r--	2024-04-17 20:28
test_csv.py	40.9 KB	-rw-r--r--	2024-04-17 20:28
test_ctypes.py	400 B	-rw-r--r--	2024-04-17 20:28
test_curses.py	10.7 KB	-rw-r--r--	2024-04-17 20:28
test_datetime.py	1.81 KB	-rw-r--r--	2024-04-17 20:28
test_dbm.py	5.52 KB	-rw-r--r--	2024-04-17 20:28
test_dbm_dumb.py	5.49 KB	-rw-r--r--	2024-04-17 20:28
test_dbm_gnu.py	2.85 KB	-rw-r--r--	2024-04-17 20:28
test_dbm_ndbm.py	1.13 KB	-rw-r--r--	2024-04-17 20:28
test_decimal.py	197.66 KB	-rw-r--r--	2024-04-17 20:28
test_decorators.py	9.6 KB	-rw-r--r--	2024-04-17 20:28
test_defaultdict.py	5.94 KB	-rw-r--r--	2024-04-17 20:28
test_deque.py	25 KB	-rw-r--r--	2024-04-17 20:28
test_descr.py	156.64 KB	-rw-r--r--	2024-04-17 20:28
test_descrtut.py	11.5 KB	-rw-r--r--	2024-04-17 20:28
test_devpoll.py	3.49 KB	-rw-r--r--	2024-04-17 20:28
test_dict.py	31.11 KB	-rw-r--r--	2024-04-17 20:28
test_dictcomps.py	3.69 KB	-rw-r--r--	2024-04-17 20:28
test_dictviews.py	8.51 KB	-rw-r--r--	2024-04-17 20:28
test_difflib.py	10.78 KB	-rw-r--r--	2024-04-17 20:28
test_difflib_expect.html	100.86 KB	-rw-r--r--	2017-09-19 12:02
test_dis.py	12.33 KB	-rw-r--r--	2024-04-17 20:28
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test_doctest.py	81.78 KB	-rw-r--r--	2024-04-17 20:28
test_doctest.txt	300 B	-rw-r--r--	2017-09-19 12:02
test_doctest2.py	2.3 KB	-rw-r--r--	2024-04-17 20:28
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test_eof.py	855 B	-rw-r--r--	2024-04-17 20:28
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test_fnmatch.py	2.84 KB	-rw-r--r--	2024-04-17 20:28
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test_future4.py	105 B	-rw-r--r--	2024-04-17 20:28
test_future5.py	510 B	-rw-r--r--	2024-04-17 20:28
test_gc.py	29 KB	-rw-r--r--	2024-04-17 20:28
test_gdb.py	35.86 KB	-rw-r--r--	2024-04-17 20:28
test_generators.py	48.5 KB	-rw-r--r--	2024-04-17 20:28
test_genericpath.py	13.3 KB	-rw-r--r--	2024-04-17 20:28
test_genexps.py	7.12 KB	-rw-r--r--	2024-04-17 20:28
test_getargs2.py	23.74 KB	-rw-r--r--	2024-04-17 20:28
test_getopt.py	6.8 KB	-rw-r--r--	2024-04-17 20:28
test_getpass.py	5.95 KB	-rw-r--r--	2024-04-17 20:28
test_gettext.py	22.11 KB	-rw-r--r--	2024-04-17 20:28
test_glob.py	6.69 KB	-rw-r--r--	2024-04-17 20:28
test_global.py	1.25 KB	-rw-r--r--	2024-04-17 20:28
test_grammar.py	31.96 KB	-rw-r--r--	2024-04-17 20:28
test_grp.py	3.18 KB	-rw-r--r--	2024-04-17 20:28
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test_heapq.py	14.14 KB	-rw-r--r--	2024-04-17 20:28
test_hmac.py	17.23 KB	-rw-r--r--	2024-04-17 20:28
test_html.py	579 B	-rw-r--r--	2024-04-17 20:28
test_htmlparser.py	30.74 KB	-rw-r--r--	2024-04-17 20:28
test_http_cookiejar.py	70 KB	-rw-r--r--	2024-04-17 20:28
test_http_cookies.py	9.98 KB	-rw-r--r--	2024-04-17 20:28
test_httplib.py	37.59 KB	-rw-r--r--	2024-04-17 20:28
test_httpservers.py	26.35 KB	-rw-r--r--	2024-04-17 20:28
test_idle.py	1.3 KB	-rw-r--r--	2024-04-17 20:28
test_imaplib.py	15.67 KB	-rw-r--r--	2024-04-17 20:28
test_imghdr.py	4.31 KB	-rw-r--r--	2024-04-17 20:28
test_imp.py	18.89 KB	-rw-r--r--	2024-04-17 20:28
test_import.py	38.55 KB	-rw-r--r--	2024-04-17 20:28
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Rename

# Verify that gdb can pretty-print the various PyObject* types
#
# The code for testing gdb was adapted from similar work in Unladen Swallow's
# Lib/test/test_jit_gdb.py

import os
import re
import subprocess
import sys
import sysconfig
import unittest
import locale

# Is this Python configured to support threads?
try:
    import _thread
except ImportError:
    _thread = None

from test.support import run_unittest, findfile, python_is_optimized

try:
    gdb_version, _ = subprocess.Popen(["gdb", "--version"],
                                      stdout=subprocess.PIPE).communicate()
except OSError:
    # This is what "no gdb" looks like.  There may, however, be other
    # errors that manifest this way too.
    raise unittest.SkipTest("Couldn't find gdb on the path")
gdb_version_number = re.search(b"^GNU gdb [^\d]*(\d+)\.(\d)", gdb_version)
gdb_major_version = int(gdb_version_number.group(1))
gdb_minor_version = int(gdb_version_number.group(2))
if gdb_major_version < 7:
    raise unittest.SkipTest("gdb versions before 7.0 didn't support python embedding"
                            " Saw:\n" + gdb_version.decode('ascii', 'replace'))

if not sysconfig.is_python_build():
    raise unittest.SkipTest("test_gdb only works on source builds at the moment.")

# Location of custom hooks file in a repository checkout.
checkout_hook_path = os.path.join(os.path.dirname(sys.executable),
                                  'python-gdb.py')

def run_gdb(*args, **env_vars):
    """Runs gdb in --batch mode with the additional arguments given by *args.

Returns its (stdout, stderr) decoded from utf-8 using the replace handler.
    """
    if env_vars:
        env = os.environ.copy()
        env.update(env_vars)
    else:
        env = None
    base_cmd = ('gdb', '--batch')
    if (gdb_major_version, gdb_minor_version) >= (7, 4):
        base_cmd += ('-iex', 'add-auto-load-safe-path ' + checkout_hook_path)
    out, err = subprocess.Popen(base_cmd + args,
        stdout=subprocess.PIPE, stderr=subprocess.PIPE, env=env,
        ).communicate()
    return out.decode('utf-8', 'replace'), err.decode('utf-8', 'replace')

# Verify that "gdb" was built with the embedded python support enabled:
gdbpy_version, _ = run_gdb("--eval-command=python import sys; print(sys.version_info)")
if not gdbpy_version:
    raise unittest.SkipTest("gdb not built with embedded python support")

# Verify that "gdb" can load our custom hooks, as OS security settings may
# disallow this without a customised .gdbinit.
cmd = ['--args', sys.executable]
_, gdbpy_errors = run_gdb('--args', sys.executable)
if "auto-loading has been declined" in gdbpy_errors:
    msg = "gdb security settings prevent use of custom hooks: "
    raise unittest.SkipTest(msg + gdbpy_errors.rstrip())

def gdb_has_frame_select():
    # Does this build of gdb have gdb.Frame.select ?
    stdout, _ = run_gdb("--eval-command=python print(dir(gdb.Frame))")
    m = re.match(r'.*\[(.*)\].*', stdout)
    if not m:
        raise unittest.SkipTest("Unable to parse output from gdb.Frame.select test")
    gdb_frame_dir = m.group(1).split(', ')
    return "'select'" in gdb_frame_dir

HAS_PYUP_PYDOWN = gdb_has_frame_select()

def gdb_has_autoload_safepath():
    # Recent GDBs will only auto-load scripts from certain safe
    # locations, so we will need to turn off this protection.
    # However, if the GDB doesn't have it, then the following
    # command will generate noise on stderr (rhbz#817072):
    cmd = "--eval-command=set auto-load safe-path /"
    p = subprocess.Popen(["gdb", "--batch", cmd],
                         stderr=subprocess.PIPE)
    _, stderr = p.communicate()
    return b'"on" or "off" expected.' not in stderr
    
HAS_AUTOLOAD_SAFEPATH = gdb_has_autoload_safepath()

BREAKPOINT_FN='builtin_id'

class DebuggerTests(unittest.TestCase):

"""Test that the debugger can debug Python."""

def get_stack_trace(self, source=None, script=None,
                        breakpoint=BREAKPOINT_FN,
                        cmds_after_breakpoint=None,
                        import_site=False):
        '''
        Run 'python -c SOURCE' under gdb with a breakpoint.

Support injecting commands after the breakpoint is reached

Returns the stdout from gdb

cmds_after_breakpoint: if provided, a list of strings: gdb commands
        '''
        # We use "set breakpoint pending yes" to avoid blocking with a:
        #   Function "foo" not defined.
        #   Make breakpoint pending on future shared library load? (y or [n])
        # error, which typically happens python is dynamically linked (the
        # breakpoints of interest are to be found in the shared library)
        # When this happens, we still get:
        #   Function "textiowrapper_write" not defined.
        # emitted to stderr each time, alas.

# Initially I had "--eval-command=continue" here, but removed it to
        # avoid repeated print breakpoints when traversing hierarchical data
        # structures

# Generate a list of commands in gdb's language:
        commands = ['set breakpoint pending yes',
                    'break %s' % breakpoint,

# GDB as of Fedora 17 onwards can distinguish between the
                    # value of a variable at entry vs current value:
                    #   http://sourceware.org/gdb/onlinedocs/gdb/Variables.html
                    # which leads to the selftests failing with errors like this:
                    #   AssertionError: 'v@entry=()' != '()'
                    # Disable this:
                    'set print entry-values no',

'run']

if HAS_AUTOLOAD_SAFEPATH:
            # Recent GDBs will only auto-load scripts from certain safe
            # locations.
            # Where necessary, turn off this protection to ensure that
            # our -gdb.py script can be loaded - but not on earlier gdb builds
            # as this would generate noise on stderr (rhbz#817072):
            init_commands = ['set auto-load safe-path /']
        else:
            init_commands = []

if cmds_after_breakpoint:
            commands += cmds_after_breakpoint
        else:
            commands += ['backtrace']

# print init_commands
        # print commands

# Use "commands" to generate the arguments with which to invoke "gdb":
        args = ["gdb", "--batch"]
        args += ['--init-eval-command=%s' % cmd for cmd in init_commands]
        args += ['--eval-command=%s' % cmd for cmd in commands]
        args += ["--args",
                 sys.executable]

if not import_site:
            # -S suppresses the default 'import site'
            args += ["-S"]

if source:
            args += ["-c", source]
        elif script:
            args += [script]

# print args
        # print (' '.join(args))

# Use "args" to invoke gdb, capturing stdout, stderr:
        out, err = run_gdb(*args, PYTHONHASHSEED='0')

errlines = err.splitlines()
        unexpected_errlines = []

# Ignore some benign messages on stderr.
        ignore_patterns = (
            'Function "%s" not defined.' % breakpoint,
            "warning: no loadable sections found in added symbol-file"
            " system-supplied DSO",
            "warning: Unable to find libthread_db matching"
            " inferior's thread library, thread debugging will"
            " not be available.",
            "warning: Cannot initialize thread debugging"
            " library: Debugger service failed",
            'warning: Could not load shared library symbols for '
            'linux-vdso.so',
            'warning: Could not load shared library symbols for '
            'linux-gate.so',
            'Do you need "set solib-search-path" or '
            '"set sysroot"?',
            )
        ignore_patterns += ('warning: Unable to open',
                            'Missing separate debuginfo for',
                            'Try: yum --disablerepo=',
                            'Undefined set print command')
        for line in errlines:
            if not line.startswith(ignore_patterns):
                unexpected_errlines.append(line)

# Ensure no unexpected error messages:
        self.assertEqual(unexpected_errlines, [])
        return out

def get_gdb_repr(self, source,
                     cmds_after_breakpoint=None,
                     import_site=False):
        # Given an input python source representation of data,
        # run "python -c'id(DATA)'" under gdb with a breakpoint on
        # builtin_id and scrape out gdb's representation of the "op"
        # parameter, and verify that the gdb displays the same string
        #
        # Verify that the gdb displays the expected string
        #
        # For a nested structure, the first time we hit the breakpoint will
        # give us the top-level structure

# NOTE: avoid decoding too much of the traceback as some
        # undecodable characters may lurk there in optimized mode
        # (issue #19743).
        cmds_after_breakpoint = cmds_after_breakpoint or ["backtrace 1"]
        gdb_output = self.get_stack_trace(source, breakpoint=BREAKPOINT_FN,
                                          cmds_after_breakpoint=cmds_after_breakpoint,
                                          import_site=import_site)
        # gdb can insert additional '\n' and space characters in various places
        # in its output, depending on the width of the terminal it's connected
        # to (using its "wrap_here" function)
        m = re.match('.*#0\s+builtin_id\s+$self\=.*,\s+v=\s*(.*?)$\s+at\s+\S*Python/bltinmodule.c.*',
                     gdb_output, re.DOTALL)
        if not m:
            self.fail('Unexpected gdb output: %r\n%s' % (gdb_output, gdb_output))
        return m.group(1), gdb_output

def assertEndsWith(self, actual, exp_end):
        '''Ensure that the given "actual" string ends with "exp_end"'''
        self.assertTrue(actual.endswith(exp_end),
                        msg='%r did not end with %r' % (actual, exp_end))

def assertMultilineMatches(self, actual, pattern):
        m = re.match(pattern, actual, re.DOTALL)
        if not m:
            self.fail(msg='%r did not match %r' % (actual, pattern))

def get_sample_script(self):
        return findfile('gdb_sample.py')

class PrettyPrintTests(DebuggerTests):
    def test_getting_backtrace(self):
        gdb_output = self.get_stack_trace('id(42)')
        self.assertTrue(BREAKPOINT_FN in gdb_output)

def assertGdbRepr(self, val, exp_repr=None):
        # Ensure that gdb's rendering of the value in a debugged process
        # matches repr(value) in this process:
        gdb_repr, gdb_output = self.get_gdb_repr('id(' + ascii(val) + ')')
        if not exp_repr:
            exp_repr = repr(val)
        self.assertEqual(gdb_repr, exp_repr,
                         ('%r did not equal expected %r; full output was:\n%s'
                          % (gdb_repr, exp_repr, gdb_output)))

def test_int(self):
        'Verify the pretty-printing of various int values'
        self.assertGdbRepr(42)
        self.assertGdbRepr(0)
        self.assertGdbRepr(-7)
        self.assertGdbRepr(1000000000000)
        self.assertGdbRepr(-1000000000000000)

def test_singletons(self):
        'Verify the pretty-printing of True, False and None'
        self.assertGdbRepr(True)
        self.assertGdbRepr(False)
        self.assertGdbRepr(None)

def test_dicts(self):
        'Verify the pretty-printing of dictionaries'
        self.assertGdbRepr({})
        self.assertGdbRepr({'foo': 'bar'})
        self.assertGdbRepr({'foo': 'bar', 'douglas': 42},
                           "{'foo': 'bar', 'douglas': 42}")

def test_lists(self):
        'Verify the pretty-printing of lists'
        self.assertGdbRepr([])
        self.assertGdbRepr(list(range(5)))

def test_bytes(self):
        'Verify the pretty-printing of bytes'
        self.assertGdbRepr(b'')
        self.assertGdbRepr(b'And now for something hopefully the same')
        self.assertGdbRepr(b'string with embedded NUL here \0 and then some more text')
        self.assertGdbRepr(b'this is a tab:\t'
                           b' this is a slash-N:\n'
                           b' this is a slash-R:\r'
                           )

self.assertGdbRepr(b'this is byte 255:\xff and byte 128:\x80')

self.assertGdbRepr(bytes([b for b in range(255)]))

def test_strings(self):
        'Verify the pretty-printing of unicode strings'
        encoding = locale.getpreferredencoding()
        def check_repr(text):
            try:
                text.encode(encoding)
                printable = True
            except UnicodeEncodeError:
                self.assertGdbRepr(text, ascii(text))
            else:
                self.assertGdbRepr(text)

self.assertGdbRepr('')
        self.assertGdbRepr('And now for something hopefully the same')
        self.assertGdbRepr('string with embedded NUL here \0 and then some more text')

# Test printing a single character:
        #    U+2620 SKULL AND CROSSBONES
        check_repr('\u2620')

# Test printing a Japanese unicode string
        # (I believe this reads "mojibake", using 3 characters from the CJK
        # Unified Ideographs area, followed by U+3051 HIRAGANA LETTER KE)
        check_repr('\u6587\u5b57\u5316\u3051')

# Test a character outside the BMP:
        #    U+1D121 MUSICAL SYMBOL C CLEF
        # This is:
        # UTF-8: 0xF0 0x9D 0x84 0xA1
        # UTF-16: 0xD834 0xDD21
        check_repr(chr(0x1D121))

def test_tuples(self):
        'Verify the pretty-printing of tuples'
        self.assertGdbRepr(tuple())
        self.assertGdbRepr((1,), '(1,)')
        self.assertGdbRepr(('foo', 'bar', 'baz'))

def test_sets(self):
        'Verify the pretty-printing of sets'
        self.assertGdbRepr(set())
        self.assertGdbRepr(set(['a', 'b']), "{'a', 'b'}")
        self.assertGdbRepr(set([4, 5, 6]), "{4, 5, 6}")

# Ensure that we handle sets containing the "dummy" key value,
        # which happens on deletion:
        gdb_repr, gdb_output = self.get_gdb_repr('''s = set(['a','b'])
s.pop()
id(s)''')
        self.assertEqual(gdb_repr, "{'b'}")

def test_frozensets(self):
        'Verify the pretty-printing of frozensets'
        self.assertGdbRepr(frozenset())
        self.assertGdbRepr(frozenset(['a', 'b']), "frozenset({'a', 'b'})")
        self.assertGdbRepr(frozenset([4, 5, 6]), "frozenset({4, 5, 6})")

def test_exceptions(self):
        # Test a RuntimeError
        gdb_repr, gdb_output = self.get_gdb_repr('''
try:
    raise RuntimeError("I am an error")
except RuntimeError as e:
    id(e)
''')
        self.assertEqual(gdb_repr,
                         "RuntimeError('I am an error',)")

# Test division by zero:
        gdb_repr, gdb_output = self.get_gdb_repr('''
try:
    a = 1 / 0
except ZeroDivisionError as e:
    id(e)
''')
        self.assertEqual(gdb_repr,
                         "ZeroDivisionError('division by zero',)")

def test_modern_class(self):
        'Verify the pretty-printing of new-style class instances'
        gdb_repr, gdb_output = self.get_gdb_repr('''
class Foo:
    pass
foo = Foo()
foo.an_int = 42
id(foo)''')
        m = re.match(r'<Foo$an_int=42$ at remote 0x-?[0-9a-f]+>', gdb_repr)
        self.assertTrue(m,
                        msg='Unexpected new-style class rendering %r' % gdb_repr)

def test_subclassing_list(self):
        'Verify the pretty-printing of an instance of a list subclass'
        gdb_repr, gdb_output = self.get_gdb_repr('''
class Foo(list):
    pass
foo = Foo()
foo += [1, 2, 3]
foo.an_int = 42
id(foo)''')
        m = re.match(r'<Foo$an_int=42$ at remote 0x-?[0-9a-f]+>', gdb_repr)

self.assertTrue(m,
                        msg='Unexpected new-style class rendering %r' % gdb_repr)

def test_subclassing_tuple(self):
        'Verify the pretty-printing of an instance of a tuple subclass'
        # This should exercise the negative tp_dictoffset code in the
        # new-style class support
        gdb_repr, gdb_output = self.get_gdb_repr('''
class Foo(tuple):
    pass
foo = Foo((1, 2, 3))
foo.an_int = 42
id(foo)''')
        m = re.match(r'<Foo$an_int=42$ at remote 0x-?[0-9a-f]+>', gdb_repr)

self.assertTrue(m,
                        msg='Unexpected new-style class rendering %r' % gdb_repr)

def assertSane(self, source, corruption, exprepr=None):
        '''Run Python under gdb, corrupting variables in the inferior process
        immediately before taking a backtrace.

Verify that the variable's representation is the expected failsafe
        representation'''
        if corruption:
            cmds_after_breakpoint=[corruption, 'backtrace']
        else:
            cmds_after_breakpoint=['backtrace']

gdb_repr, gdb_output = \
            self.get_gdb_repr(source,
                              cmds_after_breakpoint=cmds_after_breakpoint)
        if exprepr:
            if gdb_repr == exprepr:
                # gdb managed to print the value in spite of the corruption;
                # this is good (see http://bugs.python.org/issue8330)
                return

# Match anything for the type name; 0xDEADBEEF could point to
        # something arbitrary (see  http://bugs.python.org/issue8330)
        pattern = '<.* at remote 0x-?[0-9a-f]+>'

m = re.match(pattern, gdb_repr)
        if not m:
            self.fail('Unexpected gdb representation: %r\n%s' % \
                          (gdb_repr, gdb_output))

def test_NULL_ptr(self):
        'Ensure that a NULL PyObject* is handled gracefully'
        gdb_repr, gdb_output = (
            self.get_gdb_repr('id(42)',
                              cmds_after_breakpoint=['set variable v=0',
                                                     'backtrace'])
            )

self.assertEqual(gdb_repr, '0x0')

def test_NULL_ob_type(self):
        'Ensure that a PyObject* with NULL ob_type is handled gracefully'
        self.assertSane('id(42)',
                        'set v->ob_type=0')

def test_corrupt_ob_type(self):
        'Ensure that a PyObject* with a corrupt ob_type is handled gracefully'
        self.assertSane('id(42)',
                        'set v->ob_type=0xDEADBEEF',
                        exprepr='42')

def test_corrupt_tp_flags(self):
        'Ensure that a PyObject* with a type with corrupt tp_flags is handled'
        self.assertSane('id(42)',
                        'set v->ob_type->tp_flags=0x0',
                        exprepr='42')

def test_corrupt_tp_name(self):
        'Ensure that a PyObject* with a type with corrupt tp_name is handled'
        self.assertSane('id(42)',
                        'set v->ob_type->tp_name=0xDEADBEEF',
                        exprepr='42')

def test_builtins_help(self):
        'Ensure that the new-style class _Helper in site.py can be handled'
        # (this was the issue causing tracebacks in
        #  http://bugs.python.org/issue8032#msg100537 )
        gdb_repr, gdb_output = self.get_gdb_repr('id(__builtins__.help)', import_site=True)

m = re.match(r'<_Helper at remote 0x-?[0-9a-f]+>', gdb_repr)
        self.assertTrue(m,
                        msg='Unexpected rendering %r' % gdb_repr)

def test_selfreferential_list(self):
        '''Ensure that a reference loop involving a list doesn't lead proxyval
        into an infinite loop:'''
        gdb_repr, gdb_output = \
            self.get_gdb_repr("a = [3, 4, 5] ; a.append(a) ; id(a)")
        self.assertEqual(gdb_repr, '[3, 4, 5, [...]]')

gdb_repr, gdb_output = \
            self.get_gdb_repr("a = [3, 4, 5] ; b = [a] ; a.append(b) ; id(a)")
        self.assertEqual(gdb_repr, '[3, 4, 5, [[...]]]')

def test_selfreferential_dict(self):
        '''Ensure that a reference loop involving a dict doesn't lead proxyval
        into an infinite loop:'''
        gdb_repr, gdb_output = \
            self.get_gdb_repr("a = {} ; b = {'bar':a} ; a['foo'] = b ; id(a)")

self.assertEqual(gdb_repr, "{'foo': {'bar': {...}}}")

def test_selfreferential_old_style_instance(self):
        gdb_repr, gdb_output = \
            self.get_gdb_repr('''
class Foo:
    pass
foo = Foo()
foo.an_attr = foo
id(foo)''')
        self.assertTrue(re.match('<Foo$an_attr=<\.\.\.>$ at remote 0x-?[0-9a-f]+>',
                                 gdb_repr),
                        'Unexpected gdb representation: %r\n%s' % \
                            (gdb_repr, gdb_output))

def test_selfreferential_new_style_instance(self):
        gdb_repr, gdb_output = \
            self.get_gdb_repr('''
class Foo(object):
    pass
foo = Foo()
foo.an_attr = foo
id(foo)''')
        self.assertTrue(re.match('<Foo$an_attr=<\.\.\.>$ at remote 0x-?[0-9a-f]+>',
                                 gdb_repr),
                        'Unexpected gdb representation: %r\n%s' % \
                            (gdb_repr, gdb_output))

gdb_repr, gdb_output = \
            self.get_gdb_repr('''
class Foo(object):
    pass
a = Foo()
b = Foo()
a.an_attr = b
b.an_attr = a
id(a)''')
        self.assertTrue(re.match('<Foo$an_attr=<Foo\(an_attr=<\.\.\.>$ at remote 0x-?[0-9a-f]+>\) at remote 0x-?[0-9a-f]+>',
                                 gdb_repr),
                        'Unexpected gdb representation: %r\n%s' % \
                            (gdb_repr, gdb_output))

def test_truncation(self):
        'Verify that very long output is truncated'
        gdb_repr, gdb_output = self.get_gdb_repr('id(list(range(1000)))')
        self.assertEqual(gdb_repr,
                         "[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, "
                         "14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, "
                         "27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, "
                         "40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, "
                         "53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, "
                         "66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, "
                         "79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, "
                         "92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, "
                         "104, 105, 106, 107, 108, 109, 110, 111, 112, 113, "
                         "114, 115, 116, 117, 118, 119, 120, 121, 122, 123, "
                         "124, 125, 126, 127, 128, 129, 130, 131, 132, 133, "
                         "134, 135, 136, 137, 138, 139, 140, 141, 142, 143, "
                         "144, 145, 146, 147, 148, 149, 150, 151, 152, 153, "
                         "154, 155, 156, 157, 158, 159, 160, 161, 162, 163, "
                         "164, 165, 166, 167, 168, 169, 170, 171, 172, 173, "
                         "174, 175, 176, 177, 178, 179, 180, 181, 182, 183, "
                         "184, 185, 186, 187, 188, 189, 190, 191, 192, 193, "
                         "194, 195, 196, 197, 198, 199, 200, 201, 202, 203, "
                         "204, 205, 206, 207, 208, 209, 210, 211, 212, 213, "
                         "214, 215, 216, 217, 218, 219, 220, 221, 222, 223, "
                         "224, 225, 226...(truncated)")
        self.assertEqual(len(gdb_repr),
                         1024 + len('...(truncated)'))

def test_builtin_method(self):
        gdb_repr, gdb_output = self.get_gdb_repr('import sys; id(sys.stdout.readlines)')
        self.assertTrue(re.match('<built-in method readlines of _io.TextIOWrapper object at remote 0x-?[0-9a-f]+>',
                                 gdb_repr),
                        'Unexpected gdb representation: %r\n%s' % \
                            (gdb_repr, gdb_output))

def test_frames(self):
        gdb_output = self.get_stack_trace('''
def foo(a, b, c):
    pass

foo(3, 4, 5)
id(foo.__code__)''',
                                          breakpoint='builtin_id',
                                          cmds_after_breakpoint=['print (PyFrameObject*)(((PyCodeObject*)v)->co_zombieframe)']
                                          )
        self.assertTrue(re.match('.*\s+\$1 =\s+Frame 0x-?[0-9a-f]+, for file <string>, line 3, in foo \s+.*',
                                 gdb_output,
                                 re.DOTALL),
                        'Unexpected gdb representation: %r\n%s' % (gdb_output, gdb_output))

@unittest.skipIf(python_is_optimized(),
                 "Python was compiled with optimizations")
class PyListTests(DebuggerTests):
    def assertListing(self, expected, actual):
        self.assertEndsWith(actual, expected)

def test_basic_command(self):
        'Verify that the "py-list" command works'
        bt = self.get_stack_trace(script=self.get_sample_script(),
                                  cmds_after_breakpoint=['py-list'])

self.assertListing('   5    \n'
                           '   6    def bar(a, b, c):\n'
                           '   7        baz(a, b, c)\n'
                           '   8    \n'
                           '   9    def baz(*args):\n'
                           ' >10        id(42)\n'
                           '  11    \n'
                           '  12    foo(1, 2, 3)\n',
                           bt)

def test_one_abs_arg(self):
        'Verify the "py-list" command with one absolute argument'
        bt = self.get_stack_trace(script=self.get_sample_script(),
                                  cmds_after_breakpoint=['py-list 9'])

self.assertListing('   9    def baz(*args):\n'
                           ' >10        id(42)\n'
                           '  11    \n'
                           '  12    foo(1, 2, 3)\n',
                           bt)

def test_two_abs_args(self):
        'Verify the "py-list" command with two absolute arguments'
        bt = self.get_stack_trace(script=self.get_sample_script(),
                                  cmds_after_breakpoint=['py-list 1,3'])

self.assertListing('   1    # Sample script for use by test_gdb.py\n'
                           '   2    \n'
                           '   3    def foo(a, b, c):\n',
                           bt)

class StackNavigationTests(DebuggerTests):
    @unittest.skipUnless(HAS_PYUP_PYDOWN, "test requires py-up/py-down commands")
    @unittest.skipIf(python_is_optimized(),
                     "Python was compiled with optimizations")
    def test_pyup_command(self):
        'Verify that the "py-up" command works'
        bt = self.get_stack_trace(script=self.get_sample_script(),
                                  cmds_after_breakpoint=['py-up'])
        self.assertMultilineMatches(bt,
                                    r'''^.*
#[0-9]+ Frame 0x-?[0-9a-f]+, for file .*gdb_sample.py, line 7, in bar $a=1, b=2, c=3$
    baz$a, b, c$
$''')

@unittest.skipUnless(HAS_PYUP_PYDOWN, "test requires py-up/py-down commands")
    def test_down_at_bottom(self):
        'Verify handling of "py-down" at the bottom of the stack'
        bt = self.get_stack_trace(script=self.get_sample_script(),
                                  cmds_after_breakpoint=['py-down'])
        self.assertEndsWith(bt,
                            'Unable to find a newer python frame\n')

@unittest.skipUnless(HAS_PYUP_PYDOWN, "test requires py-up/py-down commands")
    def test_up_at_top(self):
        'Verify handling of "py-up" at the top of the stack'
        bt = self.get_stack_trace(script=self.get_sample_script(),
                                  cmds_after_breakpoint=['py-up'] * 4)
        self.assertEndsWith(bt,
                            'Unable to find an older python frame\n')

@unittest.skipUnless(HAS_PYUP_PYDOWN, "test requires py-up/py-down commands")
    @unittest.skipIf(python_is_optimized(),
                     "Python was compiled with optimizations")
    def test_up_then_down(self):
        'Verify "py-up" followed by "py-down"'
        bt = self.get_stack_trace(script=self.get_sample_script(),
                                  cmds_after_breakpoint=['py-up', 'py-down'])
        self.assertMultilineMatches(bt,
                                    r'''^.*
#[0-9]+ Frame 0x-?[0-9a-f]+, for file .*gdb_sample.py, line 7, in bar $a=1, b=2, c=3$
    baz$a, b, c$
#[0-9]+ Frame 0x-?[0-9a-f]+, for file .*gdb_sample.py, line 10, in baz $args=\(1, 2, 3$\)
    id$42$
$''')

class PyBtTests(DebuggerTests):
    @unittest.skipIf(python_is_optimized(),
                     "Python was compiled with optimizations")
    def test_bt(self):
        'Verify that the "py-bt" command works'
        bt = self.get_stack_trace(script=self.get_sample_script(),
                                  cmds_after_breakpoint=['py-bt'])
        self.assertMultilineMatches(bt,
                                    r'''^.*
Traceback $most recent call first$:
  File ".*gdb_sample.py", line 10, in baz
    id$42$
  File ".*gdb_sample.py", line 7, in bar
    baz$a, b, c$
  File ".*gdb_sample.py", line 4, in foo
    bar$a, b, c$
  File ".*gdb_sample.py", line 12, in <module>
    foo$1, 2, 3$
''')

@unittest.skipIf(python_is_optimized(),
                     "Python was compiled with optimizations")
    def test_bt_full(self):
        'Verify that the "py-bt-full" command works'
        bt = self.get_stack_trace(script=self.get_sample_script(),
                                  cmds_after_breakpoint=['py-bt-full'])
        self.assertMultilineMatches(bt,
                                    r'''^.*
#[0-9]+ Frame 0x-?[0-9a-f]+, for file .*gdb_sample.py, line 7, in bar $a=1, b=2, c=3$
    baz$a, b, c$
#[0-9]+ Frame 0x-?[0-9a-f]+, for file .*gdb_sample.py, line 4, in foo $a=1, b=2, c=3$
    bar$a, b, c$
#[0-9]+ Frame 0x-?[0-9a-f]+, for file .*gdb_sample.py, line 12, in <module> 
    foo$1, 2, 3$
''')

@unittest.skipUnless(_thread,
                         "Python was compiled without thread support")
    def test_threads(self):
        'Verify that "py-bt" indicates threads that are waiting for the GIL'
        cmd = '''
from threading import Thread

class TestThread(Thread):
    # These threads would run forever, but we'll interrupt things with the
    # debugger
    def run(self):
        i = 0
        while 1:
             i += 1

t = {}
for i in range(4):
   t[i] = TestThread()
   t[i].start()

# Trigger a breakpoint on the main thread
id(42)

'''
        # Verify with "py-bt":
        gdb_output = self.get_stack_trace(cmd,
                                          cmds_after_breakpoint=['thread apply all py-bt'])
        self.assertIn('Waiting for the GIL', gdb_output)

# Verify with "py-bt-full":
        gdb_output = self.get_stack_trace(cmd,
                                          cmds_after_breakpoint=['thread apply all py-bt-full'])
        self.assertIn('Waiting for the GIL', gdb_output)

@unittest.skipIf(python_is_optimized(),
                     "Python was compiled with optimizations")
    # Some older versions of gdb will fail with
    #  "Cannot find new threads: generic error"
    # unless we add LD_PRELOAD=PATH-TO-libpthread.so.1 as a workaround
    @unittest.skipUnless(_thread,
                         "Python was compiled without thread support")
    def test_gc(self):
        'Verify that "py-bt" indicates if a thread is garbage-collecting'
        cmd = ('from gc import collect\n'
               'id(42)\n'
               'def foo():\n'
               '    collect()\n'
               'def bar():\n'
               '    foo()\n'
               'bar()\n')
        # Verify with "py-bt":
        gdb_output = self.get_stack_trace(cmd,
                                          cmds_after_breakpoint=['break update_refs', 'continue', 'py-bt'],
                                          )
        self.assertIn('Garbage-collecting', gdb_output)

# Verify with "py-bt-full":
        gdb_output = self.get_stack_trace(cmd,
                                          cmds_after_breakpoint=['break update_refs', 'continue', 'py-bt-full'],
                                          )
        self.assertIn('Garbage-collecting', gdb_output)

@unittest.skipIf(python_is_optimized(),
                     "Python was compiled with optimizations")
    # Some older versions of gdb will fail with
    #  "Cannot find new threads: generic error"
    # unless we add LD_PRELOAD=PATH-TO-libpthread.so.1 as a workaround
    @unittest.skipUnless(_thread,
                         "Python was compiled without thread support")
    def test_pycfunction(self):
        'Verify that "py-bt" displays invocations of PyCFunction instances'
        cmd = ('from time import sleep\n'
               'def foo():\n'
               '    sleep(1)\n'
               'def bar():\n'
               '    foo()\n'
               'bar()\n')
        # Verify with "py-bt":
        gdb_output = self.get_stack_trace(cmd,
                                          breakpoint='time_sleep',
                                          cmds_after_breakpoint=['bt', 'py-bt'],
                                          )
        self.assertIn('<built-in method sleep', gdb_output)

# Verify with "py-bt-full":
        gdb_output = self.get_stack_trace(cmd,
                                          breakpoint='time_sleep',
                                          cmds_after_breakpoint=['py-bt-full'],
                                          )
        self.assertIn('#0 <built-in method sleep', gdb_output)

class PyPrintTests(DebuggerTests):
    @unittest.skipIf(python_is_optimized(),
                     "Python was compiled with optimizations")
    def test_basic_command(self):
        'Verify that the "py-print" command works'
        bt = self.get_stack_trace(script=self.get_sample_script(),
                                  cmds_after_breakpoint=['py-print args'])
        self.assertMultilineMatches(bt,
                                    r".*\nlocal 'args' = $1, 2, 3$\n.*")

@unittest.skipIf(python_is_optimized(),
                     "Python was compiled with optimizations")
    @unittest.skipUnless(HAS_PYUP_PYDOWN, "test requires py-up/py-down commands")
    def test_print_after_up(self):
        bt = self.get_stack_trace(script=self.get_sample_script(),
                                  cmds_after_breakpoint=['py-up', 'py-print c', 'py-print b', 'py-print a'])
        self.assertMultilineMatches(bt,
                                    r".*\nlocal 'c' = 3\nlocal 'b' = 2\nlocal 'a' = 1\n.*")

@unittest.skipIf(python_is_optimized(),
                     "Python was compiled with optimizations")
    def test_printing_global(self):
        bt = self.get_stack_trace(script=self.get_sample_script(),
                                  cmds_after_breakpoint=['py-print __name__'])
        self.assertMultilineMatches(bt,
                                    r".*\nglobal '__name__' = '__main__'\n.*")

@unittest.skipIf(python_is_optimized(),
                     "Python was compiled with optimizations")
    def test_printing_builtin(self):
        bt = self.get_stack_trace(script=self.get_sample_script(),
                                  cmds_after_breakpoint=['py-print len'])
        self.assertMultilineMatches(bt,
                                    r".*\nbuiltin 'len' = <built-in method len of module object at remote 0x-?[0-9a-f]+>\n.*")

class PyLocalsTests(DebuggerTests):
    @unittest.skipIf(python_is_optimized(),
                     "Python was compiled with optimizations")
    def test_basic_command(self):
        bt = self.get_stack_trace(script=self.get_sample_script(),
                                  cmds_after_breakpoint=['py-locals'])
        self.assertMultilineMatches(bt,
                                    r".*\nargs = $1, 2, 3$\n.*")

@unittest.skipUnless(HAS_PYUP_PYDOWN, "test requires py-up/py-down commands")
    @unittest.skipIf(python_is_optimized(),
                     "Python was compiled with optimizations")
    def test_locals_after_up(self):
        bt = self.get_stack_trace(script=self.get_sample_script(),
                                  cmds_after_breakpoint=['py-up', 'py-locals'])
        self.assertMultilineMatches(bt,
                                    r".*\na = 1\nb = 2\nc = 3\n.*")

def test_main():
    run_unittest(PrettyPrintTests,
                 PyListTests,
                 StackNavigationTests,
                 PyBtTests,
                 PyPrintTests,
                 PyLocalsTests
                 )

if __name__ == "__main__":
    test_main()