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bpo-36829: Add test.support.catch_unraisable_exception() (GH-13490)

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* Copy test_exceptions.test_unraisable() to
  test_sys.UnraisableHookTest().
* Use catch_unraisable_exception() in test_coroutines,
  test_exceptions, test_generators.
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Victor Stinner 2019-05-22 23:44:02 +02:00 • committed by GitHub
parent 904e34d4e6
commit e4d300e07c
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6 changed files with 108 additions and 43 deletions
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30
Lib/test/test_exceptions.py
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@ -12,6 +12,9 @@ from test.support import (TESTFN, captured_stderr, check_impl_detail,
check_warnings, cpython_only, gc_collect, run_unittest,
no_tracing, unlink, import_module, script_helper,
SuppressCrashReport)
from test import support
class NaiveException(Exception):
def __init__(self, x):
self.x = x
@ -1181,29 +1184,12 @@ class ExceptionTests(unittest.TestCase):
# The following line is included in the traceback report:
raise exc
class BrokenExceptionDel:
def __del__(self):
exc = BrokenStrException()
# The following line is included in the traceback report:
raise exc
obj = BrokenDel()
with support.catch_unraisable_exception() as cm:
del obj
for test_class in (BrokenDel, BrokenExceptionDel):
with self.subTest(test_class):
obj = test_class()
with captured_stderr() as stderr:
del obj
report = stderr.getvalue()
self.assertIn("Exception ignored", report)
self.assertIn(test_class.__del__.__qualname__, report)
self.assertIn("test_exceptions.py", report)
self.assertIn("raise exc", report)
if test_class is BrokenExceptionDel:
self.assertIn("BrokenStrException", report)
self.assertIn("<exception str() failed>", report)
else:
self.assertIn("ValueError", report)
self.assertIn("del is broken", report)
self.assertTrue(report.endswith("\n"))
self.assertEqual(cm.unraisable.object, BrokenDel.__del__)
self.assertIsNotNone(cm.unraisable.exc_traceback)
def test_unhandled(self):
# Check for sensible reporting of unhandled exceptions