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2029 lines (1579 loc) · 50.7 KB
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[case testUnannotatedFunction]
# flags: --disallow-untyped-defs
def f(x): pass
[out]
main:2: error: Function is missing a type annotation
[case testUnannotatedArgument]
# flags: --disallow-untyped-defs
def f(x) -> int: pass
[out]
main:2: error: Function is missing a type annotation for one or more arguments
[case testNoArgumentFunction]
# flags: --disallow-untyped-defs
def f() -> int: pass
[out]
[case testUnannotatedReturn]
# flags: --disallow-untyped-defs
def f(x: int): pass
[out]
main:2: error: Function is missing a return type annotation
[case testUnannotatedReturnWithFastParser]
# flags: --disallow-untyped-defs
def f(x: int): pass
[out]
main:2: error: Function is missing a return type annotation
[case testLambda]
# flags: --disallow-untyped-defs
lambda x: x
[out]
[case testUntypedDef]
# flags: --disallow-untyped-defs
def f():
1 + "str"
[out]
main:2: error: Function is missing a return type annotation
main:2: note: Use "-> None" if function does not return a value
[case testUnannotatedReturnWithOnlySelfArgument]
# flags: --disallow-untyped-defs
def f(self): pass
[out]
main:2: error: Function is missing a return type annotation
main:2: note: Use "-> None" if function does not return a value
[case testUnannotatedReturnWithNontrivialReturn]
# flags: --disallow-untyped-defs
def f(): return 1
[out]
main:2: error: Function is missing a return type annotation
[case testUntypedAsyncDef]
# flags: --disallow-untyped-defs
async def f(): # E: Function is missing a return type annotation \
# N: Use "-> None" if function does not return a value
pass
[builtins fixtures/async_await.pyi]
[typing fixtures/typing-medium.pyi]
[case testAsyncUnannotatedArgument]
# flags: --disallow-untyped-defs
async def f(x) -> None: # E: Function is missing a type annotation for one or more arguments
pass
[builtins fixtures/async_await.pyi]
[typing fixtures/typing-async.pyi]
[case testAsyncUnannotatedReturn]
# flags: --disallow-untyped-defs
from typing import Any
async def f(x: int): # E: Function is missing a return type annotation
pass
# Make sure explicit Any is allowed.
async def g(x: int) -> Any:
pass
[builtins fixtures/async_await.pyi]
[typing fixtures/typing-async.pyi]
[case testDisallowUntypedDefsUntypedDecorator]
# flags: --disallow-untyped-decorators
def d(p):
return p
@d # E: Untyped decorator makes function "f" untyped
def f(i: int) -> int:
return i
[case testDisallowUntypedDecoratorsUnresolvedDecorator]
# flags: --disallow-untyped-decorators --ignore-missing-imports
from nonexistent import d
@d # E: Untyped decorator makes function "f" untyped
def f(i: int) -> int:
return i
[case testDisallowUntypedDecoratorUntypedDef]
# flags: --disallow-untyped-decorators
def d(p):
return p
@d # no error
def f(): pass
[case testDisallowUntypedDecoratorsPartialFunction]
# flags: --disallow-untyped-decorators
def d(p):
return p
@d # E: Untyped decorator makes function "f" untyped
def f(x) -> None: pass
@d # E: Untyped decorator makes function "g" untyped
def g(x, y: int): pass
@d # E: Untyped decorator makes function "h" untyped
def h(x: int): pass
[case testDisallowUntypedDecoratorsImpreciseDecorator]
# flags: --disallow-untyped-decorators
from typing import Any
def d(p) -> Any:
return p
@d # no error
def f() -> None: pass
[case testDisallowUntypedDecoratorsMultipleDecorators]
# flags: --disallow-untyped-decorators
from typing import Any
def d1(p):
return p
def d2(p):
return p
def d3(p) -> Any:
return p
@d1 # E: Untyped decorator makes function "f" untyped
@d2 # E: Untyped decorator makes function "f" untyped
@d3 # no error
@d1 # E: Untyped decorator makes function "f" untyped
def f() -> None: pass
[case testDisallowUntypedDecoratorsCallableInstance]
# flags: --disallow-untyped-decorators
from typing import Callable
class TypedDecorator:
def __call__(self, c: Callable) -> Callable:
return function
class UntypedDecorator:
def __call__(self, c):
return function
@TypedDecorator()
def f() -> None: pass
@UntypedDecorator() # E: Untyped decorator makes function "g" untyped
def g() -> None: pass
@TypedDecorator()
@UntypedDecorator() # E: Untyped decorator makes function "h" untyped
def h() -> None: pass
@UntypedDecorator() # E: Untyped decorator makes function "i" untyped
@TypedDecorator()
def i() -> None: pass
reveal_type(f) # N: Revealed type is "def (*Any, **Any) -> Any"
reveal_type(g) # N: Revealed type is "Any"
reveal_type(h) # N: Revealed type is "def (*Any, **Any) -> Any"
reveal_type(i) # N: Revealed type is "Any"
[case testDisallowUntypedDecoratorsCallableInstanceDecoratedCall]
# flags: --disallow-untyped-decorators
from typing import Callable, TypeVar
C = TypeVar('C', bound=Callable)
def typed_decorator(c: C) -> C:
return c
def untyped_decorator(c):
return c
class TypedDecorator:
@typed_decorator
def __call__(self, c: Callable) -> Callable:
return function
class UntypedDecorator1:
@untyped_decorator
def __call__(self, c):
return function
class UntypedDecorator2:
@untyped_decorator # E: Untyped decorator makes function "__call__" untyped
def __call__(self, c: Callable) -> Callable:
return function
class UntypedDecorator3:
@typed_decorator
@untyped_decorator # E: Untyped decorator makes function "__call__" untyped
def __call__(self, c: Callable) -> Callable:
return function
class UntypedDecorator4:
@untyped_decorator # E: Untyped decorator makes function "__call__" untyped
@typed_decorator
def __call__(self, c: Callable) -> Callable:
return function
@TypedDecorator()
def f() -> None: pass
@UntypedDecorator1() # E: Untyped decorator makes function "g1" untyped
def g1() -> None: pass
@UntypedDecorator2() # E: Untyped decorator makes function "g2" untyped
def g2() -> None: pass
@UntypedDecorator3() # E: Untyped decorator makes function "g3" untyped
def g3() -> None: pass
@UntypedDecorator4() # E: Untyped decorator makes function "g4" untyped
def g4() -> None: pass
reveal_type(f) # N: Revealed type is "def (*Any, **Any) -> Any"
reveal_type(g1) # N: Revealed type is "Any"
reveal_type(g2) # N: Revealed type is "Any"
reveal_type(g3) # N: Revealed type is "Any"
reveal_type(g4) # N: Revealed type is "Any"
[builtins fixtures/bool.pyi]
[case testDisallowUntypedDecoratorsNonCallableInstance]
# flags: --disallow-untyped-decorators
class Decorator:
pass
@Decorator() # E: "Decorator" not callable
def f() -> None: pass
[case testSubclassingAny]
# flags: --disallow-subclassing-any
from typing import Any
FakeClass = None # type: Any
class Foo(FakeClass): pass # E: Class cannot subclass "FakeClass" (has type "Any")
[out]
[case testSubclassingAnyMultipleBaseClasses]
# flags: --disallow-subclassing-any
from typing import Any
FakeClass = None # type: Any
class ActualClass: pass
class Foo(ActualClass, FakeClass): pass # E: Class cannot subclass "FakeClass" (has type "Any")
[out]
[case testSubclassingAnySilentImports]
# flags: --disallow-subclassing-any --follow-imports=skip
# cmd: mypy -m main
[file main.py]
from ignored_module import BaseClass
class Foo(BaseClass): pass
[file ignored_module.py]
class BaseClass: pass
[out]
tmp/main.py:2: error: Class cannot subclass "BaseClass" (has type "Any")
[case testSubclassingAnySilentImports2]
# flags: --disallow-subclassing-any --follow-imports=skip
# cmd: mypy -m main
[file main.py]
import ignored_module
class Foo(ignored_module.BaseClass): pass
[file ignored_module.py]
class BaseClass: pass
[out]
tmp/main.py:2: error: Class cannot subclass "BaseClass" (has type "Any")
[case testWarnNoReturnIgnoresTrivialFunctions]
# flags: --warn-no-return
def f() -> int:
pass
def g() -> int:
...
def h() -> int:
"""with docstring"""
pass
def i() -> int:
"""with docstring"""
...
def j() -> int:
u"""with unicode docstring"""
pass
def k() -> int:
"""docstring only"""
[case testWarnNoReturnWorksWithAlwaysTrue]
# flags: --warn-no-return
PY3 = True
def f() -> int:
if PY3:
return 0
else:
return 0
[builtins fixtures/bool.pyi]
[case testWarnNoReturnWorksWithAlwaysFalse]
# flags: --warn-no-return
PY2 = False
def f() -> int:
if PY2:
return 0
else:
return 0
[builtins fixtures/bool.pyi]
[case testWarnNoReturnWorksWithMypyTrue]
# flags: --warn-no-return
MYPY = False
def f() -> int:
if MYPY:
return 0
else:
return 0
[builtins fixtures/bool.pyi]
[case testNoReturnDisallowsReturn]
# flags: --warn-no-return
from mypy_extensions import NoReturn
def f() -> NoReturn:
if bool():
return 5 # E: Return statement in function which does not return
else:
return # E: Return statement in function which does not return
[builtins fixtures/dict.pyi]
[case testNoReturnWithoutImplicitReturn]
# flags: --warn-no-return
from mypy_extensions import NoReturn
def no_return() -> NoReturn: pass
def f() -> NoReturn:
no_return()
[builtins fixtures/dict.pyi]
[case testNoReturnDisallowsImplicitReturn]
# flags: --warn-no-return
from mypy_extensions import NoReturn
def f() -> NoReturn: # E: Implicit return in function which does not return
non_trivial_function = 1
[builtins fixtures/dict.pyi]
[case testNoReturnNoWarnNoReturn]
# flags: --warn-no-return
from mypy_extensions import NoReturn
def no_return() -> NoReturn: pass
def f() -> int:
if bool():
return 0
else:
no_return()
[builtins fixtures/dict.pyi]
[case testNoReturnInExpr]
# flags: --warn-no-return
from mypy_extensions import NoReturn
def no_return() -> NoReturn: pass
def f() -> int:
return 0
reveal_type(f() or no_return()) # N: Revealed type is "builtins.int"
[builtins fixtures/dict.pyi]
[case testNoReturnVariable]
# flags: --warn-no-return
from mypy_extensions import NoReturn
x = 0 # type: NoReturn # E: Incompatible types in assignment (expression has type "int", variable has type "NoReturn")
[builtins fixtures/dict.pyi]
[case testNoReturnAsync]
# flags: --warn-no-return
from mypy_extensions import NoReturn
async def f() -> NoReturn: ...
async def g() -> NoReturn:
await f()
async def h() -> NoReturn: # E: Implicit return in function which does not return
f()
[builtins fixtures/dict.pyi]
[typing fixtures/typing-async.pyi]
[case testNoReturnImportFromTyping]
from typing import NoReturn
def h() -> NoReturn:
if bool():
return 5 # E: Return statement in function which does not return
else:
return # E: Return statement in function which does not return
def no_return() -> NoReturn: pass
def f() -> NoReturn:
no_return()
x: NoReturn = 0 # E: Incompatible types in assignment (expression has type "int", variable has type "NoReturn")
[builtins fixtures/dict.pyi]
[case testShowErrorContextFunction]
# flags: --show-error-context
def f() -> None:
0 + ""
[out]
main: note: In function "f":
main:3: error: Unsupported operand types for + ("int" and "str")
[case testShowErrorContextClass]
# flags: --show-error-context
class A:
0 + ""
[out]
main: note: In class "A":
main:3: error: Unsupported operand types for + ("int" and "str")
[case testShowErrorContextMember]
# flags: --show-error-context
class A:
def f(self, x: int) -> None:
self.f("")
[out]
main: note: In member "f" of class "A":
main:4: error: Argument 1 to "f" of "A" has incompatible type "str"; expected "int"
[case testShowErrorContextModule]
# flags: --show-error-context
import m
[file m.py]
0 + ""
[out]
main:2: note: In module imported here:
tmp/m.py:1: error: Unsupported operand types for + ("int" and "str")
[case testShowErrorContextTopLevel]
# flags: --show-error-context
def f() -> None:
0 + ""
0 + ""
[out]
main: note: In function "f":
main:3: error: Unsupported operand types for + ("int" and "str")
main: note: At top level:
main:4: error: Unsupported operand types for + ("int" and "str")
[case testShowErrorContextFromHere]
# flags: --show-error-context
import a
[file a.py]
import b
[file b.py]
0 + ""
[out]
tmp/a.py:1: note: In module imported here,
main:2: note: ... from here:
tmp/b.py:1: error: Unsupported operand types for + ("int" and "str")
[case testFollowImportsNormal]
# flags: --follow-imports=normal
from mod import x
x + ""
[file mod.py]
1 + ""
x = 0
[out]
tmp/mod.py:1: error: Unsupported operand types for + ("int" and "str")
main:3: error: Unsupported operand types for + ("int" and "str")
[case testFollowImportsSilent]
# flags: --follow-imports=silent
from mod import x
x + "" # E: Unsupported operand types for + ("int" and "str")
[file mod.py]
1 + ""
x = 0
[case testFollowImportsSilentTypeIgnore]
# flags: --warn-unused-ignores --follow-imports=silent
import mod
[file mod.py]
x = 3 # type: ignore
[case testFollowImportsSkip]
# flags: --follow-imports=skip
from mod import x
x + ""
[file mod.py]
this deliberate syntax error will not be reported
[out]
[case testFollowImportsError]
# flags: --follow-imports=error
from mod import x
x + ""
[file mod.py]
deliberate syntax error
[out]
main:2: error: Import of "mod" ignored
main:2: note: (Using --follow-imports=error, module not passed on command line)
[case testIgnoreMissingImportsFalse]
from mod import x
[out]
main:1: error: Cannot find implementation or library stub for module named "mod"
main:1: note: See https://mypy.readthedocs.io/en/stable/running_mypy.html#missing-imports
[case testIgnoreMissingImportsTrue]
# flags: --ignore-missing-imports
from mod import x
[out]
[case testPerFileIncompleteDefsBasic]
# flags: --config-file tmp/mypy.ini
import standard, incomplete
[file standard.py]
def incomplete(x) -> int:
return 0
[file incomplete.py]
def incomplete(x) -> int: # E: Function is missing a type annotation for one or more arguments
return 0
[file mypy.ini]
\[mypy]
disallow_incomplete_defs = False
\[mypy-incomplete]
disallow_incomplete_defs = True
[case testPerFileIncompleteDefsBasicPyProjectTOML]
# flags: --config-file tmp/pyproject.toml
import standard, incomplete
[file standard.py]
def incomplete(x) -> int:
return 0
[file incomplete.py]
def incomplete(x) -> int: # E: Function is missing a type annotation for one or more arguments
return 0
[file pyproject.toml]
\[tool.mypy]
disallow_incomplete_defs = false
\[[tool.mypy.overrides]]
module = 'incomplete'
disallow_incomplete_defs = true
[case testPerFileStrictOptionalBasic]
# flags: --config-file tmp/mypy.ini
import standard, optional
[file standard.py]
x = 0
if int():
x = None
[file optional.py]
x = 0
if int():
x = None # E: Incompatible types in assignment (expression has type "None", variable has type "int")
[file mypy.ini]
\[mypy]
strict_optional = False
\[mypy-optional]
strict_optional = True
[case testPerFileStrictOptionalBasicPyProjectTOML]
# flags: --config-file tmp/pyproject.toml
import standard, optional
[file standard.py]
x = 0
if int():
x = None
[file optional.py]
x = 0
if int():
x = None # E: Incompatible types in assignment (expression has type "None", variable has type "int")
[file pyproject.toml]
\[tool.mypy]
strict_optional = false
\[[tool.mypy.overrides]]
module = 'optional'
strict_optional = true
[case testPerFileStrictOptionalBasicImportStandard]
# flags: --config-file tmp/mypy.ini
import standard, optional
[file standard.py]
from typing import Optional
def f(x: int) -> None: pass
an_int = 0 # type: int
optional_int = None # type: Optional[int]
f(an_int) # ints can be used as ints
f(optional_int) # optional ints can be used as ints in this file
[file optional.py]
import standard
def f(x: int) -> None: pass
standard.an_int = None # E: Incompatible types in assignment (expression has type "None", variable has type "int")
standard.optional_int = None # OK -- explicitly declared as optional
f(standard.an_int) # ints can be used as ints
f(standard.optional_int) # E: Argument 1 to "f" has incompatible type "None"; expected "int"
[file mypy.ini]
\[mypy]
strict_optional = False
\[mypy-optional]
strict_optional = True
[case testPerFileStrictOptionalBasicImportStandardPyProjectTOML]
# flags: --config-file tmp/pyproject.toml
import standard, optional
[file standard.py]
from typing import Optional
def f(x: int) -> None: pass
an_int = 0 # type: int
optional_int = None # type: Optional[int]
f(an_int) # ints can be used as ints
f(optional_int) # optional ints can be used as ints in this file
[file optional.py]
import standard
def f(x: int) -> None: pass
standard.an_int = None # E: Incompatible types in assignment (expression has type "None", variable has type "int")
standard.optional_int = None # OK -- explicitly declared as optional
f(standard.an_int) # ints can be used as ints
f(standard.optional_int) # E: Argument 1 to "f" has incompatible type "None"; expected "int"
[file pyproject.toml]
\[tool.mypy]
strict_optional = false
\[[tool.mypy.overrides]]
module = 'optional'
strict_optional = true
[case testPerFileStrictOptionalBasicImportOptional]
# flags: --config-file tmp/mypy.ini
import standard, optional
[file standard.py]
import optional
def f(x: int) -> None: pass
f(optional.x) # OK -- in non-strict Optional context
f(optional.y) # OK -- in non-strict Optional context
[file optional.py]
from typing import Optional
def f(x: int) -> None: pass
x = 0 # type: Optional[int]
y = None # type: None
[file mypy.ini]
\[mypy]
strict_optional = False
\[mypy-optional]
strict_optional = True
[case testPerFileStrictOptionalBasicImportOptionalPyProjectTOML]
# flags: --config-file tmp/pyproject.toml
import standard, optional
[file standard.py]
import optional
def f(x: int) -> None: pass
f(optional.x) # OK -- in non-strict Optional context
f(optional.y) # OK -- in non-strict Optional context
[file optional.py]
from typing import Optional
def f(x: int) -> None: pass
x = 0 # type: Optional[int]
y = None # type: None
[file pyproject.toml]
\[tool.mypy]
strict_optional = false
\[[tool.mypy.overrides]]
module = 'optional'
strict_optional = true
[case testPerFileStrictOptionalListItemImportOptional]
# flags: --config-file tmp/mypy.ini
import standard, optional
[file standard.py]
import optional
from typing import List
def f(x: List[int]) -> None: pass
f(optional.x) # OK -- in non-strict Optional context
f(optional.y) # OK -- in non-strict Optional context
[file optional.py]
from typing import Optional, List
def f(x: List[int]) -> None: pass
x = [] # type: List[Optional[int]]
y = [] # type: List[int]
[file mypy.ini]
\[mypy]
strict_optional = False
\[mypy-optional]
strict_optional = True
[builtins fixtures/list.pyi]
[case testPerFileStrictOptionalListItemImportOptionalPyProjectTOML]
# flags: --config-file tmp/pyproject.toml
import standard, optional
[file standard.py]
import optional
from typing import List
def f(x: List[int]) -> None: pass
f(optional.x) # OK -- in non-strict Optional context
f(optional.y) # OK -- in non-strict Optional context
[file optional.py]
from typing import Optional, List
def f(x: List[int]) -> None: pass
x = [] # type: List[Optional[int]]
y = [] # type: List[int]
[file pyproject.toml]
\[tool.mypy]
strict_optional = false
\[[tool.mypy.overrides]]
module = 'optional'
strict_optional = true
[builtins fixtures/list.pyi]
[case testPerFileStrictOptionalComplicatedList]
from typing import Union, Optional, List
def f() -> None:
x = [] # type: Union[List[Optional[str]], str]
[builtins fixtures/list.pyi]
[case testPerFileStrictOptionalNoneArguments]
# flags: --config-file tmp/mypy.ini
import standard, optional
[file standard.py]
def f(x: int = None) -> None: pass
[file optional.py]
import standard
def f(x: int = None) -> None: pass
standard.f(None)
[file mypy.ini]
\[mypy]
strict_optional = False
\[mypy-optional]
strict_optional = True
[case testPerFileStrictOptionalNoneArgumentsPyProjectTOML]
# flags: --config-file tmp/pyproject.toml
import standard, optional
[file standard.py]
def f(x: int = None) -> None: pass
[file optional.py]
import standard
def f(x: int = None) -> None: pass
standard.f(None)
[file pyproject.toml]
\[tool.mypy]
strict_optional = false
\[[tool.mypy.overrides]]
module = 'optional'
strict_optional = true
[case testDisallowImplicitTypesIgnoreMissingTypes]
# flags: --ignore-missing-imports --disallow-any-unimported
from missing import MyType
def f(x: MyType) -> None: # E: Argument 1 to "f" becomes "Any" due to an unfollowed import
pass
[case testDisallowImplicitTypes]
# flags: --disallow-any-unimported
from missing import MyType
def f(x: MyType) -> None:
pass
[out]
main:2: error: Cannot find implementation or library stub for module named "missing"
main:2: note: See https://mypy.readthedocs.io/en/stable/running_mypy.html#missing-imports
main:4: error: Argument 1 to "f" becomes "Any" due to an unfollowed import
[case testDisallowImplicitAnyVariableDefinition]
# flags: --ignore-missing-imports --disallow-any-unimported
from missing import Unchecked
t: Unchecked = 12 # E: Type of variable becomes "Any" due to an unfollowed import
[case testDisallowImplicitAnyGeneric]
# flags: --ignore-missing-imports --disallow-any-unimported
from missing import Unchecked
from typing import List
def foo(l: List[Unchecked]) -> List[Unchecked]:
t = [] # type: List[Unchecked]
return l
[builtins fixtures/list.pyi]
[out]
main:5: error: Return type becomes "List[Any]" due to an unfollowed import
main:5: error: Argument 1 to "foo" becomes "List[Any]" due to an unfollowed import
main:6: error: Type of variable becomes "List[Any]" due to an unfollowed import
[case testDisallowImplicitAnyInherit]
# flags: --ignore-missing-imports --disallow-any-unimported
from missing import Unchecked
from typing import List
class C(Unchecked): # E: Base type Unchecked becomes "Any" due to an unfollowed import
pass
class A(List[Unchecked]): # E: Base type becomes "List[Any]" due to an unfollowed import
pass
[builtins fixtures/list.pyi]
[case testDisallowImplicitAnyAlias]
# flags: --ignore-missing-imports --disallow-any-unimported
from missing import Unchecked
from typing import List
X = List[Unchecked]
def f(x: X) -> None: # E: Argument 1 to "f" becomes "List[Any]" due to an unfollowed import
pass
[builtins fixtures/list.pyi]
[case testDisallowImplicitAnyCast]
# flags: --ignore-missing-imports --disallow-any-unimported
from missing import Unchecked
from typing import List, cast
foo = [1, 2, 3]
cast(List[Unchecked], foo) # E: Target type of cast becomes "List[Any]" due to an unfollowed import
cast(Unchecked, foo) # E: Target type of cast becomes "Any" due to an unfollowed import
[builtins fixtures/list.pyi]
[case testDisallowImplicitAnyNamedTuple]
# flags: --ignore-missing-imports --disallow-any-unimported
from typing import List, NamedTuple
from missing import Unchecked
Point = NamedTuple('Point', [('x', List[Unchecked]),
('y', Unchecked)])
[builtins fixtures/list.pyi]
[out]
main:5: error: NamedTuple type becomes "Tuple[List[Any], Any]" due to an unfollowed import
[case testDisallowImplicitAnyTypeVarConstraints]
# flags: --ignore-missing-imports --disallow-any-unimported
from typing import List, NamedTuple, TypeVar, Any
from missing import Unchecked
T = TypeVar('T', Unchecked, List[Unchecked], str)
[builtins fixtures/list.pyi]
[out]
main:5: error: Constraint 1 becomes "Any" due to an unfollowed import
main:5: error: Constraint 2 becomes "List[Any]" due to an unfollowed import
[case testDisallowImplicitAnyNewType]
# flags: --ignore-missing-imports --disallow-any-unimported
from typing import NewType, List
from missing import Unchecked
Baz = NewType('Baz', Unchecked) # E: Argument 2 to NewType(...) must be subclassable (got "Any")
Bar = NewType('Bar', List[Unchecked]) # E: Argument 2 to NewType(...) becomes "List[Any]" due to an unfollowed import
[builtins fixtures/list.pyi]
[case testDisallowImplicitAnyCallableAndTuple]
# flags: --ignore-missing-imports --disallow-any-unimported
from typing import Callable, Tuple
from missing import Unchecked
def foo(f: Callable[[], Unchecked]) -> Tuple[Unchecked]:
return f()
[builtins fixtures/list.pyi]
[out]
main:5: error: Return type becomes "Tuple[Any]" due to an unfollowed import
main:5: error: Argument 1 to "foo" becomes "Callable[[], Any]" due to an unfollowed import
[case testDisallowImplicitAnySubclassingExplicitAny]
# flags: --ignore-missing-imports --disallow-any-unimported --disallow-subclassing-any
from typing import Any
class C(Any): # E: Class cannot subclass "Any" (has type "Any")
pass
[case testDisallowImplicitAnyVarDeclaration]
# flags: --ignore-missing-imports --disallow-any-unimported
from missing import Unchecked
foo: Unchecked = ""
foo = ""
x, y = 1, 2 # type: Unchecked, Unchecked
[builtins fixtures/tuple.pyi]
[out]
main:4: error: Type of variable becomes "Any" due to an unfollowed import
main:6: error: A type on this line becomes "Any" due to an unfollowed import
[case testDisallowUnimportedAnyTypedDictSimple]
# flags: --ignore-missing-imports --disallow-any-unimported
from mypy_extensions import TypedDict
from x import Unchecked
M = TypedDict('M', {'x': str, 'y': Unchecked}) # E: Type of a TypedDict key becomes "Any" due to an unfollowed import
def f(m: M) -> M: pass # no error
[builtins fixtures/dict.pyi]
[case testDisallowUnimportedAnyTypedDictGeneric]
# flags: --ignore-missing-imports --disallow-any-unimported
from mypy_extensions import TypedDict
from typing import List
from x import Unchecked
M = TypedDict('M', {'x': str, 'y': List[Unchecked]}) # E: Type of a TypedDict key becomes "List[Any]" due to an unfollowed import
def f(m: M) -> M: pass # no error
[builtins fixtures/dict.pyi]
[case testDisallowAnyDecoratedUnannotatedDecorator]
# flags: --disallow-any-decorated
from typing import Any
def d(f):
return f
@d
def f(x: Any) -> Any: # E: Function is untyped after decorator transformation
pass
@d
def h(x): # E: Function is untyped after decorator transformation
pass
[builtins fixtures/list.pyi]
[case testDisallowAnyDecoratedErrorIsReportedOnlyOnce]
# flags: --disallow-any-decorated
def d(f):
return f
def d2(f):
return f
@d
@d2
@d
def f(x: int) -> None: pass # E: Function is untyped after decorator transformation
[case testDisallowAnyDecoratedReturnAny]
# flags: --disallow-any-decorated