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gh-103746: Test types.UnionType and Literal types together #103747

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Apr 24, 2023
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gh-103746: Test types.UnionType and Literal types together #103747

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gh-103746: Test types.UnionType and Literal types together
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@sobolevn
sobolevn committed Apr 24, 2023
commit bd2f61c0ee3801dfe7a9497b94ea3daee98f90b5
29 changes: 29 additions & 0 deletions Lib/test/test_types.py
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Original file line number Diff line number Diff line change
Expand Up @@ -925,6 +925,35 @@ def test_or_type_operator_with_SpecialForm(self):
assert typing.Optional[int] | str == typing.Union[int, str, None]
assert typing.Union[int, bool] | str == typing.Union[int, bool, str]

def test_or_type_operator_with_Literal(self):
Literal = typing.Literal
self.assertEqual((Literal[1] | Literal[2]).__args__,
(Literal[1], Literal[2]))

self.assertEqual((Literal[0] | Literal[False]).__args__,
(Literal[0], Literal[False]))
self.assertEqual((Literal[1] | Literal[True]).__args__,
(Literal[1], Literal[True]))

self.assertEqual(Literal[1] | Literal[1], Literal[1])
self.assertEqual(Literal['a'] | Literal['a'], Literal['a'])

import enum
class Ints(enum.IntEnum):
A = 0
B = 1

self.assertEqual(Literal[Ints.A] | Literal[Ints.A], Literal[Ints.A])
self.assertEqual(Literal[Ints.B] | Literal[Ints.B], Literal[Ints.B])

self.assertEqual((Literal[Ints.B] | Literal[Ints.A]).__args__,
(Literal[Ints.B], Literal[Ints.A]))

self.assertEqual((Literal[0] | Literal[Ints.A]).__args__,
(Literal[0], Literal[Ints.A]))
self.assertEqual((Literal[1] | Literal[Ints.B]).__args__,
(Literal[1], Literal[Ints.B]))

def test_or_type_repr(self):
assert repr(int | str) == "int | str"
assert repr((int | str) | list) == "int | str | list"
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5 changes: 5 additions & 0 deletions Lib/test/test_typing.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1805,6 +1805,11 @@ class Ints(enum.IntEnum):
A = 0
B = 1

self.assertEqual(Union[Literal[Ints.A], Literal[Ints.A]],
Literal[Ints.A])
self.assertEqual(Union[Literal[Ints.B], Literal[Ints.B]],
Literal[Ints.B])

self.assertEqual(Union[Literal[Ints.A], Literal[Ints.B]].__args__,
(Literal[Ints.A], Literal[Ints.B]))

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