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Commit5041c2b

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pythongh-103592: Add tests ofLiteral withEnum andUnion ofLiterals (python#103706)
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‎Lib/test/test_typing.py‎

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@@ -1789,6 +1789,30 @@ def Elem(*args):
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Union[Elem,str]# Nor should this
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deftest_union_of_literals(self):
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self.assertEqual(Union[Literal[1],Literal[2]].__args__,
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(Literal[1],Literal[2]))
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self.assertEqual(Union[Literal[1],Literal[1]],
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Literal[1])
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self.assertEqual(Union[Literal[False],Literal[0]].__args__,
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(Literal[False],Literal[0]))
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self.assertEqual(Union[Literal[True],Literal[1]].__args__,
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(Literal[True],Literal[1]))
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importenum
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classInts(enum.IntEnum):
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A=0
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B=1
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self.assertEqual(Union[Literal[Ints.A],Literal[Ints.B]].__args__,
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(Literal[Ints.A],Literal[Ints.B]))
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self.assertEqual(Union[Literal[0],Literal[Ints.A],Literal[False]].__args__,
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(Literal[0],Literal[Ints.A],Literal[False]))
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self.assertEqual(Union[Literal[1],Literal[Ints.B],Literal[True]].__args__,
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(Literal[1],Literal[Ints.B],Literal[True]))
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classTupleTests(BaseTestCase):
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@@ -2156,6 +2180,13 @@ def test_basics(self):
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Literal[Literal[1,2],Literal[4,5]]
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Literal[b"foo",u"bar"]
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deftest_enum(self):
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importenum
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classMy(enum.Enum):
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A='A'
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self.assertEqual(Literal[My.A].__args__, (My.A,))
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deftest_illegal_parameters_do_not_raise_runtime_errors(self):
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# Type checkers should reject these types, but we do not
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# raise errors at runtime to maintain maximum flexibility.
@@ -2245,6 +2276,20 @@ def test_flatten(self):
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self.assertEqual(l,Literal[1,2,3])
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self.assertEqual(l.__args__, (1,2,3))
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deftest_does_not_flatten_enum(self):
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importenum
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classInts(enum.IntEnum):
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A=1
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B=2
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l=Literal[
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Literal[Ints.A],
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Literal[Ints.B],
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Literal[1],
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Literal[2],
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]
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self.assertEqual(l.__args__, (Ints.A,Ints.B,1,2))
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XK=TypeVar('XK',str,bytes)
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XV=TypeVar('XV')

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