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bpo-46529: increase coverage of typing.Union.__repr__ method (GH-30911)

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(cherry picked from commit d0c690b5f8)

Co-authored-by: Nikita Sobolev <mail@sobolevn.me>
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Miss Islington (bot) 2022-01-26 02:39:40 -08:00 • committed by GitHub
parent c1254c44e2
commit c730342005
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9
Lib/test/test_typing.py
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@ -318,6 +318,15 @@ class UnionTests(BaseTestCase):
u = Union[int | float]
self.assertEqual(repr(u), 'typing.Union[int, float]')
u = Union[None, str]
self.assertEqual(repr(u), 'typing.Optional[str]')
u = Union[str, None]
self.assertEqual(repr(u), 'typing.Optional[str]')
u = Union[None, str, int]
self.assertEqual(repr(u), 'typing.Union[NoneType, str, int]')
u = Optional[str]
self.assertEqual(repr(u), 'typing.Optional[str]')
def test_cannot_subclass(self):
with self.assertRaises(TypeError):
class C(Union):