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Increase test coverage of Objects/exceptions.c (GH-94674)

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Irit Katriel 2022-07-08 19:01:47 +01:00 committed by GitHub
parent 9dff9f4814
commit 4bed0db7c2
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2 changed files with 59 additions and 5 deletions
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12
Lib/test/test_exception_group.py
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@ -758,6 +758,18 @@ def test_split_does_not_copy_non_sequence_notes(self):
self.assertFalse(hasattr(match, '__notes__'))
self.assertFalse(hasattr(rest, '__notes__'))
def test_drive_invalid_return_value(self):
class MyEg(ExceptionGroup):
def derive(self, excs):
return 42
eg = MyEg('eg', [TypeError(1), ValueError(2)])
msg = "derive must return an instance of BaseExceptionGroup"
with self.assertRaisesRegex(TypeError, msg):
eg.split(TypeError)
with self.assertRaisesRegex(TypeError, msg):
eg.subgroup(TypeError)
class NestedExceptionGroupSubclassSplitTest(ExceptionGroupSplitTestBase):

52
Lib/test/test_exceptions.py
View file

@ -546,6 +546,29 @@ def testAttributes(self):
'pickled "%r", attribute "%s' %
(e, checkArgName))
def test_setstate(self):
e = Exception(42)
e.blah = 53
self.assertEqual(e.args, (42,))
self.assertEqual(e.blah, 53)
self.assertRaises(AttributeError, getattr, e, 'a')
self.assertRaises(AttributeError, getattr, e, 'b')
e.__setstate__({'a': 1 , 'b': 2})
self.assertEqual(e.args, (42,))
self.assertEqual(e.blah, 53)
self.assertEqual(e.a, 1)
self.assertEqual(e.b, 2)
e.__setstate__({'a': 11, 'args': (1,2,3), 'blah': 35})
self.assertEqual(e.args, (1,2,3))
self.assertEqual(e.blah, 35)
self.assertEqual(e.a, 11)
self.assertEqual(e.b, 2)
def test_invalid_setstate(self):
e = Exception(42)
with self.assertRaisesRegex(TypeError, "state is not a dictionary"):
e.__setstate__(42)
def test_notes(self):
for e in [BaseException(1), Exception(2), ValueError(3)]:
with self.subTest(e=e):
@ -602,11 +625,30 @@ def testInvalidTraceback(self):
else:
self.fail("No exception raised")
def testInvalidAttrs(self):
self.assertRaises(TypeError, setattr, Exception(), '__cause__', 1)
self.assertRaises(TypeError, delattr, Exception(), '__cause__')
self.assertRaises(TypeError, setattr, Exception(), '__context__', 1)
self.assertRaises(TypeError, delattr, Exception(), '__context__')
def test_invalid_setattr(self):
TE = TypeError
exc = Exception()
msg = "'int' object is not iterable"
self.assertRaisesRegex(TE, msg, setattr, exc, 'args', 1)
msg = "__traceback__ must be a traceback or None"
self.assertRaisesRegex(TE, msg, setattr, exc, '__traceback__', 1)
msg = "exception cause must be None or derive from BaseException"
self.assertRaisesRegex(TE, msg, setattr, exc, '__cause__', 1)
msg = "exception context must be None or derive from BaseException"
self.assertRaisesRegex(TE, msg, setattr, exc, '__context__', 1)
def test_invalid_delattr(self):
TE = TypeError
try:
raise IndexError(4)
except Exception as e:
exc = e
msg = "may not be deleted"
self.assertRaisesRegex(TE, msg, delattr, exc, 'args')
self.assertRaisesRegex(TE, msg, delattr, exc, '__traceback__')
self.assertRaisesRegex(TE, msg, delattr, exc, '__cause__')
self.assertRaisesRegex(TE, msg, delattr, exc, '__context__')
def testNoneClearsTracebackAttr(self):
try: