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Add test case for fixed generic-dataclass crash #12791

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Merged
merged 1 commit into from
May 16, 2022
Merged

Add test case for fixed generic-dataclass crash #12791

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12 changes: 12 additions & 0 deletions test-data/unit/check-dataclasses.test
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Original file line number Diff line number Diff line change
Expand Up @@ -1685,3 +1685,15 @@ c: C[C]
d: C[str] # E: Type argument "str" of "C" must be a subtype of "C[Any]"
C(x=2)
[builtins fixtures/dataclasses.pyi]

[case testDataclassGenericBoundToInvalidTypeVarDoesNotCrash]
# flags: --python-version 3.7
import dataclasses
from typing import Generic, TypeVar

T = TypeVar("T", bound="NotDefined") # E: Name "NotDefined" is not defined

@dataclasses.dataclass
class C(Generic[T]):
x: float
[builtins fixtures/dataclasses.pyi]