mirror of
https://github.com/thegeeklab/ansible-later.git
synced 2024-11-26 14:50:36 +00:00
309 lines
10 KiB
Python
309 lines
10 KiB
Python
""" interactive debugging with PDB, the Python Debugger. """
|
|
from __future__ import absolute_import
|
|
from __future__ import division
|
|
from __future__ import print_function
|
|
|
|
import argparse
|
|
import pdb
|
|
import sys
|
|
from doctest import UnexpectedException
|
|
|
|
from _pytest import outcomes
|
|
from _pytest.config import hookimpl
|
|
|
|
|
|
def _validate_usepdb_cls(value):
|
|
try:
|
|
modname, classname = value.split(":")
|
|
except ValueError:
|
|
raise argparse.ArgumentTypeError(
|
|
"{!r} is not in the format 'modname:classname'".format(value)
|
|
)
|
|
|
|
try:
|
|
__import__(modname)
|
|
mod = sys.modules[modname]
|
|
|
|
# Handle --pdbcls=pdb:pdb.Pdb (useful e.g. with pdbpp).
|
|
parts = classname.split(".")
|
|
pdb_cls = getattr(mod, parts[0])
|
|
for part in parts[1:]:
|
|
pdb_cls = getattr(pdb_cls, part)
|
|
|
|
return pdb_cls
|
|
except Exception as exc:
|
|
raise argparse.ArgumentTypeError(
|
|
"could not get pdb class for {!r}: {}".format(value, exc)
|
|
)
|
|
|
|
|
|
def pytest_addoption(parser):
|
|
group = parser.getgroup("general")
|
|
group._addoption(
|
|
"--pdb",
|
|
dest="usepdb",
|
|
action="store_true",
|
|
help="start the interactive Python debugger on errors or KeyboardInterrupt.",
|
|
)
|
|
group._addoption(
|
|
"--pdbcls",
|
|
dest="usepdb_cls",
|
|
metavar="modulename:classname",
|
|
type=_validate_usepdb_cls,
|
|
help="start a custom interactive Python debugger on errors. "
|
|
"For example: --pdbcls=IPython.terminal.debugger:TerminalPdb",
|
|
)
|
|
group._addoption(
|
|
"--trace",
|
|
dest="trace",
|
|
action="store_true",
|
|
help="Immediately break when running each test.",
|
|
)
|
|
|
|
|
|
def pytest_configure(config):
|
|
pdb_cls = config.getvalue("usepdb_cls")
|
|
if not pdb_cls:
|
|
pdb_cls = pdb.Pdb
|
|
|
|
if config.getvalue("trace"):
|
|
config.pluginmanager.register(PdbTrace(), "pdbtrace")
|
|
if config.getvalue("usepdb"):
|
|
config.pluginmanager.register(PdbInvoke(), "pdbinvoke")
|
|
|
|
pytestPDB._saved.append(
|
|
(pdb.set_trace, pytestPDB._pluginmanager, pytestPDB._config, pytestPDB._pdb_cls)
|
|
)
|
|
pdb.set_trace = pytestPDB.set_trace
|
|
pytestPDB._pluginmanager = config.pluginmanager
|
|
pytestPDB._config = config
|
|
pytestPDB._pdb_cls = pdb_cls
|
|
|
|
# NOTE: not using pytest_unconfigure, since it might get called although
|
|
# pytest_configure was not (if another plugin raises UsageError).
|
|
def fin():
|
|
(
|
|
pdb.set_trace,
|
|
pytestPDB._pluginmanager,
|
|
pytestPDB._config,
|
|
pytestPDB._pdb_cls,
|
|
) = pytestPDB._saved.pop()
|
|
|
|
config._cleanup.append(fin)
|
|
|
|
|
|
class pytestPDB(object):
|
|
""" Pseudo PDB that defers to the real pdb. """
|
|
|
|
_pluginmanager = None
|
|
_config = None
|
|
_pdb_cls = pdb.Pdb
|
|
_saved = []
|
|
_recursive_debug = 0
|
|
|
|
@classmethod
|
|
def _is_capturing(cls, capman):
|
|
if capman:
|
|
return capman.is_capturing()
|
|
return False
|
|
|
|
@classmethod
|
|
def _init_pdb(cls, *args, **kwargs):
|
|
""" Initialize PDB debugging, dropping any IO capturing. """
|
|
import _pytest.config
|
|
|
|
if cls._pluginmanager is not None:
|
|
capman = cls._pluginmanager.getplugin("capturemanager")
|
|
if capman:
|
|
capman.suspend(in_=True)
|
|
tw = _pytest.config.create_terminal_writer(cls._config)
|
|
tw.line()
|
|
if cls._recursive_debug == 0:
|
|
# Handle header similar to pdb.set_trace in py37+.
|
|
header = kwargs.pop("header", None)
|
|
if header is not None:
|
|
tw.sep(">", header)
|
|
else:
|
|
capturing = cls._is_capturing(capman)
|
|
if capturing:
|
|
if capturing == "global":
|
|
tw.sep(">", "PDB set_trace (IO-capturing turned off)")
|
|
else:
|
|
tw.sep(
|
|
">",
|
|
"PDB set_trace (IO-capturing turned off for %s)"
|
|
% capturing,
|
|
)
|
|
else:
|
|
tw.sep(">", "PDB set_trace")
|
|
|
|
class _PdbWrapper(cls._pdb_cls, object):
|
|
_pytest_capman = capman
|
|
_continued = False
|
|
|
|
def do_debug(self, arg):
|
|
cls._recursive_debug += 1
|
|
ret = super(_PdbWrapper, self).do_debug(arg)
|
|
cls._recursive_debug -= 1
|
|
return ret
|
|
|
|
def do_continue(self, arg):
|
|
ret = super(_PdbWrapper, self).do_continue(arg)
|
|
if cls._recursive_debug == 0:
|
|
tw = _pytest.config.create_terminal_writer(cls._config)
|
|
tw.line()
|
|
|
|
capman = self._pytest_capman
|
|
capturing = pytestPDB._is_capturing(capman)
|
|
if capturing:
|
|
if capturing == "global":
|
|
tw.sep(">", "PDB continue (IO-capturing resumed)")
|
|
else:
|
|
tw.sep(
|
|
">",
|
|
"PDB continue (IO-capturing resumed for %s)"
|
|
% capturing,
|
|
)
|
|
capman.resume()
|
|
else:
|
|
tw.sep(">", "PDB continue")
|
|
cls._pluginmanager.hook.pytest_leave_pdb(
|
|
config=cls._config, pdb=self
|
|
)
|
|
self._continued = True
|
|
return ret
|
|
|
|
do_c = do_cont = do_continue
|
|
|
|
def set_quit(self):
|
|
"""Raise Exit outcome when quit command is used in pdb.
|
|
|
|
This is a bit of a hack - it would be better if BdbQuit
|
|
could be handled, but this would require to wrap the
|
|
whole pytest run, and adjust the report etc.
|
|
"""
|
|
super(_PdbWrapper, self).set_quit()
|
|
if cls._recursive_debug == 0:
|
|
outcomes.exit("Quitting debugger")
|
|
|
|
def setup(self, f, tb):
|
|
"""Suspend on setup().
|
|
|
|
Needed after do_continue resumed, and entering another
|
|
breakpoint again.
|
|
"""
|
|
ret = super(_PdbWrapper, self).setup(f, tb)
|
|
if not ret and self._continued:
|
|
# pdb.setup() returns True if the command wants to exit
|
|
# from the interaction: do not suspend capturing then.
|
|
if self._pytest_capman:
|
|
self._pytest_capman.suspend_global_capture(in_=True)
|
|
return ret
|
|
|
|
_pdb = _PdbWrapper(**kwargs)
|
|
cls._pluginmanager.hook.pytest_enter_pdb(config=cls._config, pdb=_pdb)
|
|
else:
|
|
_pdb = cls._pdb_cls(**kwargs)
|
|
return _pdb
|
|
|
|
@classmethod
|
|
def set_trace(cls, *args, **kwargs):
|
|
"""Invoke debugging via ``Pdb.set_trace``, dropping any IO capturing."""
|
|
frame = sys._getframe().f_back
|
|
_pdb = cls._init_pdb(*args, **kwargs)
|
|
_pdb.set_trace(frame)
|
|
|
|
|
|
class PdbInvoke(object):
|
|
def pytest_exception_interact(self, node, call, report):
|
|
capman = node.config.pluginmanager.getplugin("capturemanager")
|
|
if capman:
|
|
capman.suspend_global_capture(in_=True)
|
|
out, err = capman.read_global_capture()
|
|
sys.stdout.write(out)
|
|
sys.stdout.write(err)
|
|
_enter_pdb(node, call.excinfo, report)
|
|
|
|
def pytest_internalerror(self, excrepr, excinfo):
|
|
tb = _postmortem_traceback(excinfo)
|
|
post_mortem(tb)
|
|
|
|
|
|
class PdbTrace(object):
|
|
@hookimpl(hookwrapper=True)
|
|
def pytest_pyfunc_call(self, pyfuncitem):
|
|
_test_pytest_function(pyfuncitem)
|
|
yield
|
|
|
|
|
|
def _test_pytest_function(pyfuncitem):
|
|
_pdb = pytestPDB._init_pdb()
|
|
testfunction = pyfuncitem.obj
|
|
pyfuncitem.obj = _pdb.runcall
|
|
if "func" in pyfuncitem._fixtureinfo.argnames: # noqa
|
|
raise ValueError("--trace can't be used with a fixture named func!")
|
|
pyfuncitem.funcargs["func"] = testfunction
|
|
new_list = list(pyfuncitem._fixtureinfo.argnames)
|
|
new_list.append("func")
|
|
pyfuncitem._fixtureinfo.argnames = tuple(new_list)
|
|
|
|
|
|
def _enter_pdb(node, excinfo, rep):
|
|
# XXX we re-use the TerminalReporter's terminalwriter
|
|
# because this seems to avoid some encoding related troubles
|
|
# for not completely clear reasons.
|
|
tw = node.config.pluginmanager.getplugin("terminalreporter")._tw
|
|
tw.line()
|
|
|
|
showcapture = node.config.option.showcapture
|
|
|
|
for sectionname, content in (
|
|
("stdout", rep.capstdout),
|
|
("stderr", rep.capstderr),
|
|
("log", rep.caplog),
|
|
):
|
|
if showcapture in (sectionname, "all") and content:
|
|
tw.sep(">", "captured " + sectionname)
|
|
if content[-1:] == "\n":
|
|
content = content[:-1]
|
|
tw.line(content)
|
|
|
|
tw.sep(">", "traceback")
|
|
rep.toterminal(tw)
|
|
tw.sep(">", "entering PDB")
|
|
tb = _postmortem_traceback(excinfo)
|
|
rep._pdbshown = True
|
|
post_mortem(tb)
|
|
return rep
|
|
|
|
|
|
def _postmortem_traceback(excinfo):
|
|
if isinstance(excinfo.value, UnexpectedException):
|
|
# A doctest.UnexpectedException is not useful for post_mortem.
|
|
# Use the underlying exception instead:
|
|
return excinfo.value.exc_info[2]
|
|
else:
|
|
return excinfo._excinfo[2]
|
|
|
|
|
|
def _find_last_non_hidden_frame(stack):
|
|
i = max(0, len(stack) - 1)
|
|
while i and stack[i][0].f_locals.get("__tracebackhide__", False):
|
|
i -= 1
|
|
return i
|
|
|
|
|
|
def post_mortem(t):
|
|
class Pdb(pytestPDB._pdb_cls, object):
|
|
def get_stack(self, f, t):
|
|
stack, i = super(Pdb, self).get_stack(f, t)
|
|
if f is None:
|
|
i = _find_last_non_hidden_frame(stack)
|
|
return stack, i
|
|
|
|
p = Pdb()
|
|
p.reset()
|
|
p.interaction(None, t)
|
|
if p.quitting:
|
|
outcomes.exit("Quitting debugger")
|