Current File : //opt/hc_python/lib64/python3.8/site-packages/greenlet/tests/test_cpp.py
from __future__ import print_function
from __future__ import absolute_import
import subprocess
import unittest
import greenlet
from . import _test_extension_cpp
from . import TestCase
from . import WIN
class CPPTests(TestCase):
def test_exception_switch(self):
greenlets = []
for i in range(4):
g = greenlet.greenlet(_test_extension_cpp.test_exception_switch)
g.switch(i)
greenlets.append(g)
for i, g in enumerate(greenlets):
self.assertEqual(g.switch(), i)
def _do_test_unhandled_exception(self, target):
import os
import sys
script = os.path.join(
os.path.dirname(__file__),
'fail_cpp_exception.py',
)
args = [sys.executable, script, target.__name__ if not isinstance(target, str) else target]
__traceback_info__ = args
with self.assertRaises(subprocess.CalledProcessError) as exc:
subprocess.check_output(
args,
encoding='utf-8',
stderr=subprocess.STDOUT
)
ex = exc.exception
expected_exit = self.get_expected_returncodes_for_aborted_process()
self.assertIn(ex.returncode, expected_exit)
self.assertIn('fail_cpp_exception is running', ex.output)
return ex.output
def test_unhandled_nonstd_exception_aborts(self):
# verify that plain unhandled throw aborts
self._do_test_unhandled_exception(_test_extension_cpp.test_exception_throw_nonstd)
def test_unhandled_std_exception_aborts(self):
# verify that plain unhandled throw aborts
self._do_test_unhandled_exception(_test_extension_cpp.test_exception_throw_std)
@unittest.skipIf(WIN, "XXX: This does not crash on Windows")
# Meaning the exception is getting lost somewhere...
def test_unhandled_std_exception_as_greenlet_function_aborts(self):
# verify that plain unhandled throw aborts
output = self._do_test_unhandled_exception('run_as_greenlet_target')
self.assertIn(
# We really expect this to be prefixed with "greenlet: Unhandled C++ exception:"
# as added by our handler for std::exception (see TUserGreenlet.cpp), but
# that's not correct everywhere --- our handler never runs before std::terminate
# gets called (for example, on arm32).
'Thrown from an extension.',
output
)
def test_unhandled_exception_in_greenlet_aborts(self):
# verify that unhandled throw called in greenlet aborts too
self._do_test_unhandled_exception('run_unhandled_exception_in_greenlet_aborts')
if __name__ == '__main__':
unittest.main()
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