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Add test case for fixed bug regarding nested generic classes #12652

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Apr 22, 2022
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Add test case for fixed bug regarding nested generic classes #12652

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16 changes: 16 additions & 0 deletions test-data/unit/check-generics.test
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Original file line number Diff line number Diff line change
Expand Up @@ -1506,6 +1506,22 @@ class Outer(Generic[T]):
def g(self) -> None:
y: T # E: Invalid type "__main__.T"

[case testGenericClassInsideOtherGenericClass]
from typing import TypeVar, Generic
T = TypeVar("T")
K = TypeVar("K")

class C(Generic[T]):
def __init__(self, t: T) -> None: ...
class F(Generic[K]):
def __init__(self, k: K) -> None: ...
def foo(self) -> K: ...

reveal_type(C.F(17).foo()) # N: Revealed type is "builtins.int"
reveal_type(C("").F(17).foo()) # N: Revealed type is "builtins.int"
reveal_type(C.F) # N: Revealed type is "def [K] (k: K`1) -> __main__.C.F[K`1]"
reveal_type(C("").F) # N: Revealed type is "def [K] (k: K`1) -> __main__.C.F[K`1]"


-- Callable subtyping with generic functions
-- -----------------------------------------
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