8000 TEST: Add xfailing test for [func-returns-value] by harahu · Pull Request #17834 · python/mypy · GitHub
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TEST: Add xfailing test for [func-returns-value] #17834

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TEST: Add xfailing test for [func-returns-value] #17834

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cb6c13f
Add xfailing test for [func-returns-value]
harahu Sep 26, 2024
fd84561
Reference issue
harahu Sep 26, 2024
fa160e7
Update test-data/unit/check-errorcodes.test
harahu Sep 26, 2024
ca5d235
Move test and expand it with another decorator example
harahu Sep 27, 2024
041a9fe
Add xfailing test for callable
harahu Sep 27, 2024
7e2a820
Update check-expressions.test
harahu Sep 27, 2024
22b8259
Update check-expressions.test
harahu Sep 27, 2024
48914fd
Update check-expressions.test
harahu Sep 27, 2024
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30 changes: 30 additions & 0 deletions test-data/unit/check-expressions.test
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Original file line number Diff line number Diff line change
Expand Up @@ -1144,6 +1144,36 @@ f() and b # E: "f" does not return a value (it only ever returns None)
b or f() # E: "f" does not return a value (it only ever returns None)
[builtins fixtures/bool.pyi]

[case testNoneReturnWithDecorators-xfail]
# See: https://github.com/python/mypy/issues/14179
from typing import Callable, TypeVar

F = TypeVar('F', bound=Callable)

def deco(f: F) -> F:
pass

@deco
@deco
def f() -> None:
pass

y1 = f() # E: "f" does not return a value (it only ever returns None)

class A:
@staticmethod
def g() -> None: pass

y2 = A.g() # E: "g" of "A" does not return a value (it only ever returns None)
y3 = A().g() # E: "g" of "A" does not return a value (it only ever returns None)
[builtins fixtures/staticmethod.pyi]

[case testNoneReturnWithCallable-xfail]
class A:
def __call__(self) -> None: pass

y = A()() # E: Function does not return a value (it only ever returns None)


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