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

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Nikita Sobolev 2022-01-26 13:13:02 +03:00 • committed by GitHub
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commit d0c690b5f8
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Lib/test/test_typing.py
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@ -325,6 +325,15 @@ 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):