/
test_tracing_on_top_level.py
484 lines (371 loc) · 11.2 KB
/
test_tracing_on_top_level.py
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from pydevd import PyDB
import pytest
from tests_python.debugger_unittest import IS_CPYTHON
import threading
DEBUG = False
class DummyTopLevelFrame(object):
__slots__ = ['f_code', 'f_back', 'f_lineno', 'f_trace']
def __init__(self, method):
self.f_code = method.__code__
self.f_back = None
self.f_lineno = method.__code__.co_firstlineno
class DummyWriter(object):
__slots__ = ['commands', 'command_meanings']
def __init__(self):
self.commands = []
self.command_meanings = []
def add_command(self, cmd):
from _pydevd_bundle.pydevd_comm import ID_TO_MEANING
meaning = ID_TO_MEANING[str(cmd.id)]
if DEBUG:
print(meaning)
self.command_meanings.append(meaning)
if DEBUG:
print(cmd._as_bytes.decode('utf-8'))
self.commands.append(cmd)
class DummyPyDb(PyDB):
def __init__(self):
PyDB.__init__(self, set_as_global=False)
def do_wait_suspend(
self, thread, frame, event, arg, *args, **kwargs):
from _pydevd_bundle.pydevd_constants import STATE_RUN
info = thread.additional_info
info.pydev_original_step_cmd = -1
info.pydev_step_cmd = -1
info.pydev_step_stop = None
info.pydev_state = STATE_RUN
return PyDB.do_wait_suspend(self, thread, frame, event, arg, *args, **kwargs)
class _TraceTopLevel(object):
def __init__(self):
self.py_db = DummyPyDb()
self.py_db.writer = DummyWriter()
def set_target_func(self, target_func):
self.frame = DummyTopLevelFrame(target_func)
self.target_func = target_func
def get_exception_arg(self):
import sys
try:
raise AssertionError()
except:
arg = sys.exc_info()
return arg
def create_add_exception_breakpoint_with_policy(
self, exception, notify_on_handled_exceptions, notify_on_unhandled_exceptions, ignore_libraries):
return '\t'.join(str(x) for x in [
exception, notify_on_handled_exceptions, notify_on_unhandled_exceptions, ignore_libraries])
def add_unhandled_exception_breakpoint(self):
from _pydevd_bundle.pydevd_process_net_command import process_net_command
from tests_python.debugger_unittest import CMD_ADD_EXCEPTION_BREAK
for exc_name in ('AssertionError', 'RuntimeError'):
process_net_command(
self.py_db,
CMD_ADD_EXCEPTION_BREAK,
1,
self.create_add_exception_breakpoint_with_policy(exc_name, '0', '1', '0'),
)
def assert_last_commands(self, *commands):
assert self.py_db.writer.command_meanings[-len(commands):] == list(commands)
def assert_no_commands(self, *commands):
for command in commands:
assert command not in self.py_db.writer.command_meanings
def trace_dispatch(self, event, arg):
from _pydevd_bundle import pydevd_trace_dispatch_regular
self.new_trace_func = pydevd_trace_dispatch_regular.trace_dispatch(self.py_db, self.frame, event, arg)
return self.new_trace_func
def call_trace_dispatch(self, line):
self.frame.f_lineno = line
return self.trace_dispatch('call', None)
def exception_trace_dispatch(self, line, arg):
self.frame.f_lineno = line
self.new_trace_func = self.new_trace_func(self.frame, 'exception', arg)
def return_trace_dispatch(self, line):
self.frame.f_lineno = line
self.new_trace_func = self.new_trace_func(self.frame, 'return', None)
def assert_paused(self):
self.assert_last_commands('CMD_THREAD_SUSPEND', 'CMD_THREAD_RUN')
def assert_not_paused(self):
self.assert_no_commands('CMD_THREAD_SUSPEND', 'CMD_THREAD_RUN')
@pytest.yield_fixture
def trace_top_level():
# Note: we trace with a dummy frame with no f_back to simulate the issue in a remote attach.
yield _TraceTopLevel()
threading.current_thread().additional_info = None
@pytest.fixture
def trace_top_level_unhandled(trace_top_level):
trace_top_level.add_unhandled_exception_breakpoint()
return trace_top_level
_expected_functions_to_test = 0
def mark_handled(func):
global _expected_functions_to_test
_expected_functions_to_test += 1
func.__handled__ = True
return func
def mark_unhandled(func):
global _expected_functions_to_test
_expected_functions_to_test += 1
func.__handled__ = False
return func
#------------------------------------------------------------------------------------------- Handled
@mark_handled
def raise_handled_exception():
try:
raise AssertionError()
except:
pass
@mark_handled
def raise_handled_exception2():
try:
raise AssertionError()
except AssertionError:
pass
@mark_handled
def raise_handled_exception3():
try:
try:
raise AssertionError()
except RuntimeError:
pass
except AssertionError:
pass
@mark_handled
def raise_handled_exception3a():
try:
try:
raise AssertionError()
except AssertionError:
pass
except RuntimeError:
pass
@mark_handled
def raise_handled_exception4():
try:
try:
raise AssertionError()
except RuntimeError:
pass
except (
RuntimeError,
AssertionError):
pass
@mark_handled
def raise_handled():
try:
try:
raise AssertionError()
except RuntimeError:
pass
except (
RuntimeError,
AssertionError):
pass
@mark_handled
def raise_handled2():
try:
raise AssertionError()
except (
RuntimeError,
AssertionError):
pass
try:
raise RuntimeError()
except (
RuntimeError,
AssertionError):
pass
@mark_handled
def raise_handled9():
for i in range(2):
try:
raise AssertionError()
except AssertionError:
if i == 1:
try:
raise
except:
pass
@mark_handled
def raise_handled10():
for i in range(2):
try:
raise AssertionError()
except AssertionError:
if i == 1:
try:
raise
except:
pass
_foo = 10
#----------------------------------------------------------------------------------------- Unhandled
@mark_unhandled
def raise_unhandled_exception():
raise AssertionError()
@mark_unhandled
def raise_unhandled_exception_not_in_except_clause():
try:
raise AssertionError()
except RuntimeError:
pass
@mark_unhandled
def raise_unhandled():
try:
try:
raise AssertionError()
except RuntimeError:
pass
except (
RuntimeError,
AssertionError):
raise
@mark_unhandled
def raise_unhandled2():
try:
raise AssertionError()
except AssertionError:
pass
raise AssertionError()
@mark_unhandled
def raise_unhandled3():
try:
raise AssertionError()
except AssertionError:
raise AssertionError()
@mark_unhandled
def raise_unhandled4():
try:
raise AssertionError()
finally:
_a = 10
@mark_unhandled
def raise_unhandled5():
try:
raise AssertionError()
finally:
raise RuntimeError()
@mark_unhandled
def raise_unhandled6():
try:
raise AssertionError()
finally:
raise RuntimeError(
'in another'
'line'
)
@mark_unhandled
def raise_unhandled7():
try:
raise AssertionError()
except AssertionError:
try:
raise AssertionError()
except RuntimeError:
pass
@mark_unhandled
def raise_unhandled8():
for i in range(2):
def get_exc_to_treat():
if i == 0:
return AssertionError
return RuntimeError
try:
raise AssertionError()
except get_exc_to_treat():
pass
@mark_unhandled
def raise_unhandled9():
for i in range(2):
def get_exc_to_treat():
if i == 0:
return AssertionError
return RuntimeError
try:
raise AssertionError()
except get_exc_to_treat():
try:
raise
except:
pass
@mark_unhandled
def raise_unhandled10():
for i in range(2):
try:
raise AssertionError()
except AssertionError:
if i == 1:
try:
raise
except RuntimeError:
pass
@mark_unhandled
def raise_unhandled11():
try:
raise_unhandled10()
finally:
if True:
pass
@mark_unhandled
def raise_unhandled12():
try:
raise AssertionError()
except:
pass
try:
raise AssertionError()
finally:
if True:
pass
@mark_unhandled
def reraise_handled_exception():
try:
raise AssertionError() # Should be considered unhandled (because it's reraised).
except:
raise
def _collect_events(func):
collected = []
def events_collector(frame, event, arg):
if frame.f_code.co_name == func.__name__:
collected.append((event, frame.f_lineno, arg))
return events_collector
import sys
sys.settrace(events_collector)
try:
func()
except:
import traceback;traceback.print_exc()
finally:
sys.settrace(None)
return collected
def _replay_events(collected, trace_top_level_unhandled):
for event, lineno, arg in collected:
if event == 'call':
# Notify only unhandled
new_trace_func = trace_top_level_unhandled.call_trace_dispatch(lineno)
# Check that it's dealing with the top-level event.
if hasattr(new_trace_func, 'get_method_object'):
new_trace_func = new_trace_func.get_method_object()
assert new_trace_func.__name__ == 'trace_dispatch_and_unhandled_exceptions'
elif event == 'exception':
trace_top_level_unhandled.exception_trace_dispatch(lineno, arg)
elif event == 'return':
trace_top_level_unhandled.return_trace_dispatch(lineno)
elif event == 'line':
pass
else:
raise AssertionError('Unexpected: %s' % (event,))
def _collect_target_functions():
# return [raise_unhandled10]
ret = []
for _key, method in sorted(dict(globals()).items()):
if hasattr(method, '__handled__'):
ret.append(method)
assert len(ret) == _expected_functions_to_test
return ret
@pytest.mark.skipif(not IS_CPYTHON, reason='try..except info only available on CPython')
@pytest.mark.parametrize("func", _collect_target_functions())
def test_tracing_on_top_level_unhandled(trace_top_level_unhandled, func):
trace_top_level_unhandled.set_target_func(func)
collected_events = _collect_events(func)
_replay_events(collected_events, trace_top_level_unhandled)
if func.__handled__:
trace_top_level_unhandled.assert_not_paused() # handled exception
else:
trace_top_level_unhandled.assert_paused()