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gh-118899: Add tests for NotImplemented attribute access (#118902)

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Nikita Sobolev 2024-05-12 17:00:49 +03:00 • committed by GitHub
parent 5b941e57c7
commit ec1398e117
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18
Lib/test/test_builtin.py
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@ -2138,6 +2138,24 @@ class BuiltinTest(unittest.TestCase):
with self.assertRaisesRegex(TypeError, msg): with self.assertRaisesRegex(TypeError, msg):
not NotImplemented not NotImplemented
def test_singleton_attribute_access(self):
for singleton in (NotImplemented, Ellipsis):
with self.subTest(singleton):
self.assertIs(type(singleton), singleton.__class__)
self.assertIs(type(singleton).__class__, type)
# Missing instance attributes:
with self.assertRaises(AttributeError):
singleton.prop = 1
with self.assertRaises(AttributeError):
singleton.prop
# Missing class attributes:
with self.assertRaises(TypeError):
type(singleton).prop = 1
with self.assertRaises(AttributeError):
type(singleton).prop
class TestBreakpoint(unittest.TestCase): class TestBreakpoint(unittest.TestCase):
def setUp(self): def setUp(self):