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[3.11] Improve test coverage for is_typeddict (GH-104884) #104888

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Merged
merged 2 commits into from
May 24, 2023
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[3.11] Improve test coverage for is_typeddict (GH-104884) #104888

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8c28737
Improve test coverage for is_typeddict (GH-104884)
JelleZijlstra May 24, 2023
db72643
Update Lib/test/test_typing.py
JelleZijlstra May 24, 2023
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19 changes: 16 additions & 3 deletions Lib/test/test_typing.py
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Original file line number Diff line number Diff line change
Expand Up @@ -6756,10 +6756,23 @@ class Wrong(*bases):
pass

def test_is_typeddict(self):
assert is_typeddict(Point2D) is True
assert is_typeddict(Union[str, int]) is False
self.assertIs(is_typeddict(Point2D), True)
self.assertIs(is_typeddict(Union[str, int]), False)
# classes, not instances
assert is_typeddict(Point2D()) is False
self.assertIs(is_typeddict(Point2D()), False)
call_based = TypedDict('call_based', {'a': int})
self.assertIs(is_typeddict(call_based), True)
self.assertIs(is_typeddict(call_based()), False)

T = TypeVar("T")
class BarGeneric(TypedDict, Generic[T]):
a: T
self.assertIs(is_typeddict(BarGeneric), True)
self.assertIs(is_typeddict(BarGeneric[int]), False)
self.assertIs(is_typeddict(BarGeneric()), False)

# The TypedDict constructor is not itself a TypedDict
self.assertIs(is_typeddict(TypedDict), False)

def test_get_type_hints(self):
self.assertEqual(
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