check-newsemanal.test

-- Test cases for the new semantic analyzer

[case testNewAnalyzerEmpty]

[case testNewAnalyzerSimpleAssignment]
x = 1
x.y # E: "int" has no attribute "y"
y # E: Name "y" is not defined

[case testNewAnalyzerSimpleAnnotation]
x: int = 0
y: str = 0 \
    # E: Incompatible types in assignment (expression has type "int", variable has type "str")

[case testNewAnalyzerSimpleClass]
class A:
    x: int
a: A
a.x
a.y # E: "A" has no attribute "y"

[case testNewAnalyzerErrorInClassBody]
class A:
    x # E: Name "x" is not defined

[case testNewAnalyzerTypeAnnotationForwardReference]
class A:
    b: B
class B:
    a: A
a: A
b: B
a.b = a # E: Incompatible types in assignment (expression has type "A", variable has type "B")
a.b = b
b.a = a
b.a = b # E: Incompatible types in assignment (expression has type "B", variable has type "A")

[case testNewAnalyzerTypeAnnotationCycle1]
import b
[file a.py]
import b
class A: pass
y: b.B
y() # E: "B" not callable
[file b.py]
import a
class B: pass
x: a.A
reveal_type(x) # N: Revealed type is "a.A"

[case testNewAnalyzerTypeAnnotationCycle2]
import a
[file a.py]
from b import B
class A: pass
y: B
y()
[file b.py]
from a import A
class B: pass
x: A
x()
[out]
tmp/b.py:4: error: "A" not callable
tmp/a.py:4: error: "B" not callable

[case testNewAnalyzerTypeAnnotationCycle3]
import b
[file a.py]
from b import bad # E: Module "b" has no attribute "bad"; maybe "bad2"?
[file b.py]
from a import bad2 # E: Module "a" has no attribute "bad2"; maybe "bad"?

[case testNewAnalyzerTypeAnnotationCycle4]
import b
[file a.py]
from b import bad # E: Module "b" has no attribute "bad"
[file b.py]
# TODO: Could we generate an error here as well?
from a import bad
[targets a, b, a, b, a, b, a, b, __main__]

[case testNewAnalyzerExportedValuesInImportAll]
from m import *
_ = a
_ = b
_ = c
_ = d
_e = e
_f = f # E: Name "f" is not defined
_ = _g # E: Name "_g" is not defined
reveal_type(_e)  # N: Revealed type is "m.A"
[file m.py]
__all__ = ['a']
__all__ += ('b',)
__all__.append('c')
__all__.extend(('d', 'e'))

a = b = c = d = _g = 1
e: 'A'
f: 'A'

class A: ...
[builtins fixtures/module_all.pyi]

[case testNewAnalyzerSimpleFunction]
def f(x: int) -> str:
    return 'x'

def g(x: int) -> int:
    y = f(1)
    return y # E: Incompatible return value type (got "str", expected "int")

[case testNewAnalyzerSimpleMethod]
class A:
    def __init__(self, x: int) -> None:
        self.x = x

    def f(self) -> str:
        return self.x # E: Incompatible return value type (got "int", expected "str")

    def g(self) -> int:
        return self.f() # E: Incompatible return value type (got "str", expected "int")

[case testNewAnalyzerFunctionForwardRef]
def f() -> None:
    x = g(1) # E: Argument 1 to "g" has incompatible type "int"; expected "str"
    reveal_type(x) # N: Revealed type is "builtins.str"

def g(x: str) -> str:
    return x

[case testNewAnalyzerExportedImportThreePasses]
import b

[file a.py]
from b import b1 as a2
from b import b2 as a3

def a1() -> int: pass

reveal_type(a3()) # N: Revealed type is "builtins.int"

[file b.py]
from a import a1 as b2
from a import a2 as b3

def b1() -> str: pass

reveal_type(b3()) # N: Revealed type is "builtins.str"

[case testNewAnalyzerBool]
reveal_type(True) # N: Revealed type is "Literal[True]?"
reveal_type(False) # N: Revealed type is "Literal[False]?"

[case testNewAnalyzerNewTypeMultiplePasses]
import b

[file a.py]
from typing import NewType
import b
class A: pass
N2 = NewType('N2', b.N1)
def f1(x: A) -> None: pass
def f2(x: b.N1) -> None: pass
def f3(x: N2) -> None: pass
a = A()
n1 = b.N1(a)
n2 = N2(n1)
f1(a)
f1(n1)
f1(n2)
f2(a) # E: Argument 1 to "f2" has incompatible type "A"; expected "N1"
f2(n1)
f2(n2)
f3(a) # E: Argument 1 to "f3" has incompatible type "A"; expected "N2"
f3(n1) # E: Argument 1 to "f3" has incompatible type "N1"; expected "N2"
f3(n2)

# Test N2 etc.

[file b.py]
from typing import NewType
import a
N1 = NewType('N1', a.A)

[case testNewAnalyzerInheritanceForwardRef]
class C(B):
    pass
class B(A):
    pass
class A:
    def __init__(self, x: str) -> None: pass
    def f(self, x: int) -> None: pass

C(1) # E: Argument 1 to "C" has incompatible type "int"; expected "str"
B(1) # E: Argument 1 to "B" has incompatible type "int"; expected "str"
C('').f('') # E: Argument 1 to "f" of "A" has incompatible type "str"; expected "int"
B('').f('') # E: Argument 1 to "f" of "A" has incompatible type "str"; expected "int"

[case testNewAnalyzerInheritanceMROInCycle]
import a

[file a.py]
from b import A
import b

class B(A):
    b: int

class D(b.C):
    d: int

d = D()
reveal_type(d.a) # N: Revealed type is "builtins.int"
reveal_type(d.b) # N: Revealed type is "builtins.int"
reveal_type(d.c) # N: Revealed type is "builtins.int"
reveal_type(d.d) # N: Revealed type is "builtins.int"

[file b.py]
from a import B

class A:
    a: int

class C(B):
    c: int

[targets b, a, b, a, __main__]

[case testNewAnalyzerTypedDictClass]
from mypy_extensions import TypedDict
import a
class T1(TypedDict):
    x: A
class A: pass
reveal_type(T1(x=A())) # E

[file a.py]
from mypy_extensions import TypedDict
from b import TD1 as TD2, TD3
class T2(TD3):
    x: int
reveal_type(T2(x=2)) # E

[file b.py]
from a import TypedDict as TD1
from a import TD2 as TD3
[builtins fixtures/tuple.pyi]

[out]
tmp/a.py:5: note: Revealed type is "TypedDict('a.T2', {'x': builtins.int})"
main:6: note: Revealed type is "TypedDict('__main__.T1', {'x': __main__.A})"


[case testNewAnalyzerTypedDictClassInheritance]
from mypy_extensions import TypedDict

class T2(T1):
    y: int

class T1(TypedDict):
    x: str

class T3(TypedDict):
    x: str

class T4(T3):
    y: A

class A: pass

T2(x=0, y=0) # E: Incompatible types (expression has type "int", TypedDict item "x" has type "str")
x: T2
reveal_type(x) # N: Revealed type is "TypedDict('__main__.T2', {'x': builtins.str, 'y': builtins.int})"
y: T4
reveal_type(y) # N: Revealed type is "TypedDict('__main__.T4', {'x': builtins.str, 'y': __main__.A})"
[builtins fixtures/tuple.pyi]

[case testNewAnalyzerRedefinitionAndDeferral1a]
import a

[file a.py]
MYPY = False
if MYPY:
    from b import x as y
x = 0

def y(): pass # E: Name "y" already defined on line 4
reveal_type(y) # N: Revealed type is "builtins.int"

y2 = y
class y2: pass # E: Name "y2" already defined on line 9
reveal_type(y2) # N: Revealed type is "builtins.int"

y3, y4 = y, y
if MYPY:  # Tweak processing order
    from b import f as y3 # E: Incompatible import of "y3" (imported name has type "Callable[[], Any]", local name has type "int")
reveal_type(y3) # N: Revealed type is "builtins.int"

[file b.py]
from a import x

def f(): pass

[targets a, b, a, a.y, b.f, __main__]
[builtins fixtures/tuple.pyi]

[case testNewAnalyzerRedefinitionAndDeferral1b]
import a

[file a.py]
from b import x as y
x = 0

def y(): pass # E: Name "y" already defined on line 2
reveal_type(y) # N: Revealed type is "builtins.int"

y2 = y
class y2: pass # E: Name "y2" already defined on line 7
reveal_type(y2) # N: Revealed type is "builtins.int"

y3, y4 = y, y
from b import f as y3 # E: Incompatible import of "y3" (imported name has type "Callable[[], Any]", local name has type "int")
reveal_type(y3) # N: Revealed type is "builtins.int"

[file b.py]
MYPY = False
if MYPY:  # Tweak processing order
    from a import x

def f(): pass

[targets b, a, b, a, b.f, a.y, __main__]

[case testNewAnalyzerRedefinitionAndDeferral2a]
import a

[file a.py]
MYPY = False
if MYPY:  # Tweak processing order
    from b import C as C2
class C: pass
class C2: pass # E: Name "C2" already defined on line 4

[file b.py]
from a import C

[case testNewAnalyzerRedefinitionAndDeferral2b]
import a

[file a.py]
from b import C as C2
class C: pass

class C2: pass # E: Name "C2" already defined on line 2
[file b.py]
MYPY = False
if MYPY:  # Tweak processing order
    from a import C

[case testNewAnalyzerRedefinitionAndDeferral3]
import a

[file a.py]
from b import f as g
def f(): pass

a, *b = g()
class b(): pass # E: Name "b" already defined on line 4
reveal_type(b) # N: Revealed type is "Any"

[file b.py]
from a import f

[case testNewAnalyzerImportStarForwardRef1]
import a

[file a.py]
x: A
reveal_type(x) # N: Revealed type is "b.A"

from b import *

class A: pass # E: Name "A" already defined (possibly by an import)

[file b.py]
class A: pass
MYPY = False
if MYPY:  # Tweak processing order
    from a import x

[case testNewAnalyzerImportStarForwardRef2]
import a

[file a.py]
x: A
reveal_type(x) # N: Revealed type is "b.A"

MYPY = False
if MYPY: # Tweak processing order
    from b import *

class A: pass # E: Name "A" already defined (possibly by an import)

[file b.py]
class A: pass
from a import x

[case testNewAnalyzerClassInFunction]
def main() -> None:
    x: C
    class C:
        def __init__(self) -> None:
            self.x: A
            x()  # E: "C" not callable
    reveal_type(x.x)  # N: Revealed type is "__main__.A@8"
    class A: pass

[case testNewAnalyzerMutuallyRecursiveFunctions]
def main() -> None:
    def f() -> int:
        reveal_type(g())  # N: Revealed type is "builtins.str"
        return int()
    def g() -> str:
        reveal_type(f())  # N: Revealed type is "builtins.int"
        return str()

[case testNewAnalyzerMissingNamesInFunctions]
def main() -> None:
    def f() -> None:
        x  # E: Name "x" is not defined
        class C:
            x  # E: Name "x" is not defined

[case testNewAnalyzerCyclicDefinitions]
# flags: --disable-error-code used-before-def
gx = gy  # E: Cannot resolve name "gy" (possible cyclic definition)
gy = gx
def main() -> None:
    class C:
        def meth(self) -> None:
            lx = ly  # E: Cannot resolve name "ly" (possible cyclic definition) \
                     # N: Recursive types are not allowed at function scope
            ly = lx

[case testNewAnalyzerCyclicDefinitionCrossModule]
import b
[file a.py]
import b
x = b.x  # E: Cannot resolve attribute "x" (possible cyclic definition) \
         # E: Module has no attribute "x"
[file b.py]
import a
x = a.x
[builtins fixtures/module.pyi]

[case testNewAnalyzerMutuallyRecursiveOverloadedFunctions]
from typing import overload, Union

def main() -> None:
    @overload
    def f(x: int) -> int: ...
    @overload
    def f(x: str) -> str: ...
    def f(x: Union[int, str]) -> Union[int, str]:
        reveal_type(g(str()))  # N: Revealed type is "builtins.str"
        return x
    @overload
    def g(x: int) -> int: ...
    @overload
    def g(x: str) -> str: ...
    def g(x: Union[int, str]) -> Union[int, str]:
        reveal_type(f(int()))  # N: Revealed type is "builtins.int"
        return float()  # E: Incompatible return value type (got "float", expected "Union[int, str]")

[case testNewAnalyzerNestedClassInMethod]
class C:
    class D:
        def meth(self) -> None:
            x: Out.In
            reveal_type(x.t)  # N: Revealed type is "builtins.int"
            class Out:
                class In:
                    def meth(self) -> None:
                        self.t: int

[case testNewAnalyzerDeeplyNestedFunctions]
class Out:
    class In:
        def meth(self) -> None:
            x: C.D
            reveal_type(x.t)  # N: Revealed type is "__main__.Test@10"
            class C:
                class D:
                    def meth(self) -> None:
                        self.t: Test
                        class Test:
                            def test(self) -> None:
                                def one() -> int:
                                    reveal_type(other())  # N: Revealed type is "builtins.str"
                                    return int()
                                def other() -> str:
                                    reveal_type(one())  # N: Revealed type is "builtins.int"
                                    return str()

[case testNewAnalyzerNestedClass1]
class A:
    class B:
        x: int

        def __init__(self, x: int) -> None:
            self.x = x

        def f(self) -> str:
            return self.x # E: Incompatible return value type (got "int", expected "str")

b: A.B
b = A.B('') # E: Argument 1 to "B" has incompatible type "str"; expected "int"
reveal_type(b) # N: Revealed type is "__main__.A.B"
reveal_type(b.x) # N: Revealed type is "builtins.int"
reveal_type(b.f()) # N: Revealed type is "builtins.str"

[case testNewAnalyzerNestedClass2]
class A:
    class B:
        x: int

        def __init__(self, x: int) -> None:
            self.x = x

        def f(self) -> str:
            return self.x # E: Incompatible return value type (got "int", expected "str")

b: A.B
b = A.B('') # E: Argument 1 to "B" has incompatible type "str"; expected "int"
reveal_type(b) # N: Revealed type is "__main__.A.B"
reveal_type(b.x) # N: Revealed type is "builtins.int"
reveal_type(b.f()) # N: Revealed type is "builtins.str"
[case testNewAnalyzerGenerics]
from typing import TypeVar, Generic

T = TypeVar('T')

class C(Generic[T]):
    def __init__(self, x: T) -> None:
        self.x = x

    def get(self) -> T:
        return self.x

c: C[int]
c2: C[int, str] # E: "C" expects 1 type argument, but 2 given
c3: C
c = C('') # E: Argument 1 to "C" has incompatible type "str"; expected "int"
reveal_type(c.get()) # N: Revealed type is "builtins.int"
reveal_type(c2) # N: Revealed type is "__main__.C[Any]"
reveal_type(c3) # N: Revealed type is "__main__.C[Any]"
[case testNewAnalyzerGenericsTypeVarForwardRef]
from typing import TypeVar, Generic

class C(Generic[T]):
    def __init__(self, x: T) -> None:
        self.x = x

    def get(self) -> T:
        return self.x

T = TypeVar('T')

c: C[int]
reveal_type(c) # N: Revealed type is "__main__.C[builtins.int]"
c = C('') # E: Argument 1 to "C" has incompatible type "str"; expected "int"
reveal_type(c.get()) # N: Revealed type is "builtins.int"

[case testNewAnalyzerTypeAlias]
from typing import Union, TypeVar, Generic

T = TypeVar('T')
S = TypeVar('S')
class D(Generic[T, S]): pass

class C: pass

C2 = C
U = Union[C, int]
G = D[T, C]

c: C2
reveal_type(c) # N: Revealed type is "__main__.C"
u: U
reveal_type(u) # N: Revealed type is "Union[__main__.C, builtins.int]"
g: G[int]
reveal_type(g) # N: Revealed type is "__main__.D[builtins.int, __main__.C]"
[case testNewAnalyzerTypeAlias2]
from typing import Union

class C(D): pass

A = Union[C, int]
x: A
reveal_type(x) # N: Revealed type is "Union[__main__.C, builtins.int]"

class D: pass

[case testNewAnalyzerBuiltinTypeAliases]
from typing import List

x: List[C]
reveal_type(x) # N: Revealed type is "builtins.list[__main__.C]"

class C: pass
[builtins fixtures/list.pyi]

[case testNewAnalyzerVersionCheck]
import sys

if sys.version_info[0] < 2:
    1()
    import nonexistent
else:
    def f(x: int) -> None: pass

f('') # E: Argument 1 to "f" has incompatible type "str"; expected "int"

def g() -> None:
    if sys.version_info[0] < 3:
        import nonexistent2
    else:
        1() # E: "int" not callable
[builtins fixtures/ops.pyi]

[case testNewAnalyzerVersionCheck2]
import sys

assert sys.version_info[0] == 3
1() # E: "int" not callable
assert sys.version_info[0] < 3
''()
[builtins fixtures/ops.pyi]

[case testNewAnalyzerOverload]
from typing import overload, Union

@overload
def f(x: int) -> int: ...
@overload
def f(x: str) -> str: ...
def f(x: Union[int, str]) -> Union[int, str]:
    return 1.0 # E: Incompatible return value type (got "float", expected "Union[int, str]")

f(1)
f('')
f(1.0) # E: No overload variant of "f" matches argument type "float" \
       # N: Possible overload variants: \
       # N:     def f(x: int) -> int \
       # N:     def f(x: str) -> str

[case testNewAnalyzerOverload2]
from typing import overload, Union

class A:
    @overload
    def f(self, x: int) -> int: ...
    @overload
    def f(self, x: str) -> str: ...
    def f(self, x: Union[int, str]) -> Union[int, str]:
        return 1.0 # E: Incompatible return value type (got "float", expected "Union[int, str]")

a = A()
a.f(1)
a.f('')
a.f(1.0) # E: No overload variant of "f" of "A" matches argument type "float" \
         # N: Possible overload variants: \
         # N:     def f(self, x: int) -> int \
         # N:     def f(self, x: str) -> str

[case testNewAnalyzerPromotion]
def f(x: float) -> None: pass
y: int
f(y)
f(1)
[builtins fixtures/primitives.pyi]

[case testNewAnalyzerFunctionDecorator]
# flags: --disable-error-code used-before-def
from typing import Callable

@dec
def f1(x: int) -> int:
    return '' # E: Incompatible return value type (got "str", expected "int")

def dec(f: Callable[[int], int]) -> Callable[[str], str]: ...

@dec
def f2(x: int) -> int:
    return '' # E: Incompatible return value type (got "str", expected "int")

f1(1) # E: Argument 1 to "f1" has incompatible type "int"; expected "str"
reveal_type(f1('')) # N: Revealed type is "builtins.str"
f2(1) # E: Argument 1 to "f2" has incompatible type "int"; expected "str"

[case testNewAnalyzerTypeVarForwardReference]
# flags: --disable-error-code used-before-def
from typing import TypeVar, Generic

T = TypeVar('T')
XY = TypeVar('XY', X, Y)

class C(Generic[T]): pass

class D(C[XY], Generic[XY]): pass

class X: pass
class Y: pass

x: D[int]  # E: Value of type variable "XY" of "D" cannot be "int"
y: D[Y]

[case testNewAnalyzerTypeVarForwardReference2]
from typing import TypeVar, Generic

T = TypeVar('T')
XY = TypeVar('XY', 'X', 'Y')

class C(Generic[T]): pass

class D(C[XY]): pass

class X: pass
class Y: pass

x: D[int]  # E: Value of type variable "XY" of "D" cannot be "int"
y: D[Y]

[case testNewAnalyzerTypeVarForwardReferenceValuesDeferred]
from typing import TypeVar, Generic

T = TypeVar('T')
XY = TypeVar('XY', 'X', 'Y')

class C(Generic[T]): pass

class D(C[XY], Generic[XY]): pass

class X(Defer): pass
class Y(Defer): pass
class Defer: ...

x: D[int]  # E: Value of type variable "XY" of "D" cannot be "int"
y: D[Y]
[builtins fixtures/list.pyi]

[case testNewAnalyzerTypeVarForwardReferenceBoundDeferred]
from typing import TypeVar, Generic

T = TypeVar('T')
TY = TypeVar('TY', bound='Y')

class C(Generic[T]): pass

class D(C[TY], Generic[TY]): pass

class Y(Defer): pass
class Defer: ...

x: D[int]  # E: Type argument "int" of "D" must be a subtype of "Y"
y: D[Y]

[case testNewAnalyzerTypeVarForwardReferenceErrors]
from typing import TypeVar, Generic

class C(Generic[T]):
    def __init__(self, x: T) -> None: ...
def func(x: U) -> U: ...

U = TypeVar('U', asdf, asdf)  # E: Name "asdf" is not defined
T = TypeVar('T', bound='asdf')  # E: Name "asdf" is not defined

reveal_type(C)  # N: Revealed type is "def [T <: Any] (x: T`1) -> __main__.C[T`1]"
reveal_type(func)  # N: Revealed type is "def [U in (Any, Any)] (x: U`-1) -> U`-1"

[case testNewAnalyzerSubModuleInCycle]
import a
[file a.py]
MYPY = False
if MYPY:
    from b.c import x
[file b/__init__.pyi]
import b.c
[file b/c.pyi]
x = 0
import a

[case testNewAnalyzerBaseClassSelfReference]
from typing import TypeVar, Generic

T = TypeVar('T')

class A(Generic[T]): pass

class C(A[C]):
    pass

class D(A['D']):
    pass

a1: A[C] = C()
a2: A[D] = C() \
    # E: Incompatible types in assignment (expression has type "C", variable has type "A[D]")

[case testNewAnalyzerTypeVarBoundForwardRef]
from typing import TypeVar

T = TypeVar('T', bound='C')

class C: pass
class D(C): pass
class E: pass

def f(x: T) -> T:
    return x

reveal_type(f(D())) # N: Revealed type is "__main__.D"
f(E()) # E: Value of type variable "T" of "f" cannot be "E"

[case testNewAnalyzerNameExprRefersToIncompleteType]
import a

[file a.py]
from b import f

class C(D): pass
class D: pass

[file b.py]
from a import C
reveal_type(C()) # N: Revealed type is "a.C"
def f(): pass

[case testNewAnalyzerMemberExprRefersToIncompleteType]
import a

[file a.py]
from b import f

class C(D): pass
class D: pass

[file b.py]
import a
reveal_type(a.C()) # N: Revealed type is "a.C"
def f(): pass

[case testNewAnalyzerNamedTupleCall]
from typing import NamedTuple


class Other: pass
In = NamedTuple('In', [('s', str), ('t', Other)])
Out = NamedTuple('Out', [('x', In), ('y', Other)])
o: Out
i: In
reveal_type(o)  # N: Revealed type is "Tuple[Tuple[builtins.str, __main__.Other, fallback=__main__.In], __main__.Other, fallback=__main__.Out]"
reveal_type(o.x)  # N: Revealed type is "Tuple[builtins.str, __main__.Other, fallback=__main__.In]"
reveal_type(o.y)  # N: Revealed type is "__main__.Other"
reveal_type(o.x.t)  # N: Revealed type is "__main__.Other"
reveal_type(i.t)  # N: Revealed type is "__main__.Other"
[builtins fixtures/tuple.pyi]

[case testNewAnalyzerNamedTupleClass]
from typing import NamedTuple

o: Out
i: In

class Out(NamedTuple):
    x: In
    y: Other

reveal_type(o)  # N: Revealed type is "Tuple[Tuple[builtins.str, __main__.Other, fallback=__main__.In], __main__.Other, fallback=__main__.Out]"
reveal_type(o.x)  # N: Revealed type is "Tuple[builtins.str, __main__.Other, fallback=__main__.In]"
reveal_type(o.y)  # N: Revealed type is "__main__.Other"
reveal_type(o.x.t)  # N: Revealed type is "__main__.Other"
reveal_type(i.t)  # N: Revealed type is "__main__.Other"

class In(NamedTuple):
    s: str
    t: Other
class Other: pass
[builtins fixtures/tuple.pyi]

[case testNewAnalyzerNamedTupleCallNested]
from typing import NamedTuple

o: C.Out
i: C.In

reveal_type(o)  # N: Revealed type is "Tuple[Tuple[builtins.str, __main__.C.Other, fallback=__main__.C.In], __main__.C.Other, fallback=__main__.C.Out]"
reveal_type(o.x)  # N: Revealed type is "Tuple[builtins.str, __main__.C.Other, fallback=__main__.C.In]"
reveal_type(o.y)  # N: Revealed type is "__main__.C.Other"
reveal_type(o.x.t)  # N: Revealed type is "__main__.C.Other"
reveal_type(i.t)  # N: Revealed type is "__main__.C.Other"

class C:
    In = NamedTuple('In', [('s', str), ('t', Other)])
    Out = NamedTuple('Out', [('x', In), ('y', Other)])
    class Other: pass
[builtins fixtures/tuple.pyi]


[case testNewAnalyzerNamedTupleClassNested]
from typing import NamedTuple

o: C.Out
i: C.In

reveal_type(o)  # N: Revealed type is "Tuple[Tuple[builtins.str, __main__.C.Other, fallback=__main__.C.In], __main__.C.Other, fallback=__main__.C.Out]"
reveal_type(o.x)  # N: Revealed type is "Tuple[builtins.str, __main__.C.Other, fallback=__main__.C.In]"
reveal_type(o.y)  # N: Revealed type is "__main__.C.Other"
reveal_type(o.x.t)  # N: Revealed type is "__main__.C.Other"
reveal_type(i.t)  # N: Revealed type is "__main__.C.Other"

class C:
    class Out(NamedTuple):
        x: C.In
        y: C.Other
    class In(NamedTuple):
        s: str
        t: C.Other
    class Other: pass
[builtins fixtures/tuple.pyi]

[case testNewAnalyzerNamedTupleCallNestedMethod]
from typing import NamedTuple

class C:
    def get_tuple(self) -> None:
        Out = NamedTuple('Out', [('x', 'In'), ('y', 'Other')])
        In = NamedTuple('In', [('s', str), ('t', 'Other')])
        class Other: pass
        self.o: Out

c = C()
reveal_type(c.o)  # N: Revealed type is "Tuple[Tuple[builtins.str, __main__.Other@7, fallback=__main__.C.In@6], __main__.Other@7, fallback=__main__.C.Out@5]"
reveal_type(c.o.x)  # N: Revealed type is "Tuple[builtins.str, __main__.Other@7, fallback=__main__.C.In@6]"
[builtins fixtures/tuple.pyi]

[case testNewAnalyzerNamedTupleClassNestedMethod]
from typing import NamedTuple

class C:
    def get_tuple(self) -> None:
        class Out(NamedTuple):
            x: In
            y: Other
            def method(self) -> In: ...
        class In(NamedTuple):
            s: str
            t: Other
        class Other: pass
        self.o: Out

c = C()
reveal_type(c.o)  # N: Revealed type is "Tuple[Tuple[builtins.str, __main__.Other@12, fallback=__main__.C.In@9], __main__.Other@12, fallback=__main__.C.Out@5]"
reveal_type(c.o.x)  # N: Revealed type is "Tuple[builtins.str, __main__.Other@12, fallback=__main__.C.In@9]"
reveal_type(c.o.method())  # N: Revealed type is "Tuple[builtins.str, __main__.Other@12, fallback=__main__.C.In@9]"
[builtins fixtures/tuple.pyi]

[case testNewAnalyzerNamedTupleClassForwardMethod]
from typing import NamedTuple

n: NT
reveal_type(n.get_other())  # N: Revealed type is "Tuple[builtins.str, fallback=__main__.Other]"
reveal_type(n.get_other().s)  # N: Revealed type is "builtins.str"

class NT(NamedTuple):
    x: int
    y: int
    def get_other(self) -> Other: pass

class Other(NamedTuple):
    s: str
[builtins fixtures/tuple.pyi]

[case testNewAnalyzerNamedTupleSpecialMethods]
from typing import NamedTuple

class Other: pass
In = NamedTuple('In', [('s', str), ('t', Other)])
Out = NamedTuple('Out', [('x', In), ('y', Other)])
class SubO(Out): pass

o: SubO

reveal_type(SubO._make)  # N: Revealed type is "def (iterable: typing.Iterable[Any]) -> Tuple[Tuple[builtins.str, __main__.Other, fallback=__main__.In], __main__.Other, fallback=__main__.SubO]"
reveal_type(o._replace(y=Other()))  # N: Revealed type is "Tuple[Tuple[builtins.str, __main__.Other, fallback=__main__.In], __main__.Other, fallback=__main__.SubO]"
[builtins fixtures/tuple.pyi]

[case testNewAnalyzerNamedTupleBaseClass]
from typing import NamedTuple
class Other: pass
class In(NamedTuple):
    s: str
    t: Other
class Out(NamedTuple('Out', [('x', In), ('y', Other)])):
    pass

o: Out
reveal_type(o)  # N: Revealed type is "Tuple[Tuple[builtins.str, __main__.Other, fallback=__main__.In], __main__.Other, fallback=__main__.Out]"
reveal_type(o.x)  # N: Revealed type is "Tuple[builtins.str, __main__.Other, fallback=__main__.In]"
reveal_type(o.x.t)  # N: Revealed type is "__main__.Other"
reveal_type(Out._make)  # N: Revealed type is "def (iterable: typing.Iterable[Any]) -> Tuple[Tuple[builtins.str, __main__.Other, fallback=__main__.In], __main__.Other, fallback=__main__.Out]"
[builtins fixtures/tuple.pyi]

[case testNewAnalyzerIncompleteRefShadowsBuiltin1]
import a

[file a.py]
from typing import TypeVar, Generic

from b import C as int

x: int[str]

reveal_type(x) # N: Revealed type is "a.C[builtins.str]"

T = TypeVar('T')
class C(Generic[T]): pass

[file b.py]
from a import C

[case testNewAnalyzerIncompleteRefShadowsBuiltin2]
import b

[file a.py]
import b

int = b.C

class C: pass

x: int
reveal_type(x) # N: Revealed type is "b.C"

[file b.py]
import a

int = a.C

class C: pass

x: int
reveal_type(x) # N: Revealed type is "a.C"

[case testNewAnalyzerNamespaceCompleteness]
import a

[file a.py]
import b

x: b.C

[file b.py]
from c import *
class C: pass

[file c.py]
import a
from b import C

[targets c, b, a, c, b, __main__]

[case testNewAnalyzerImportOverExistingInCycle]
import a
[file a.py]
C = 1
from b import C  # E: Incompatible import of "C" (imported name has type "Type[C]", local name has type "int")

[file b.py]
import a

class C(B): ...
class B: ...

[case testNewAnalyzerImportOverExistingInCycleStar1]
import a
[file a.py]
C = 1
MYPY = False
if MYPY:  # Tweak processing order
    from b import *  # E: Incompatible import of "C" (imported name has type "Type[C]", local name has type "int")

[file b.py]
import a

class C(B): ...
class B: ...

[case testNewAnalyzerImportOverExistingInCycleStar2]
import a
[file a.py]
C = 1
from b import *  # E: Incompatible import of "C" (imported name has type "Type[C]", local name has type "int")

[file b.py]
MYPY = False
if MYPY:  # Tweak processing order
    import a

class C(B): ...
class B: ...

[case testNewAnalyzerIncompleteFixture]
from typing import Tuple

x: Tuple[int]  # E: Name "tuple" is not defined
[builtins fixtures/complex.pyi]

[case testNewAnalyzerMetaclass1]
class A(metaclass=B):
    pass

class B(type):
    def f(cls) -> int:
        return 0

reveal_type(A.f()) # N: Revealed type is "builtins.int"

[case testNewAnalyzerMetaclass2]
class B(type):
    def f(cls) -> int:
        return 0

class C: pass

class A(metaclass=B):
    pass

class AA(metaclass=C): # E: Metaclasses not inheriting from "type" are not supported
    pass

reveal_type(A.f()) # N: Revealed type is "builtins.int"
[case testNewAnalyzerMetaclassPlaceholder]
class B(C): pass

class A(metaclass=B):
    pass

class C(type):
    def f(cls) -> int:
        return 0

reveal_type(A.f()) # N: Revealed type is "builtins.int"

[case testNewAnalyzerMetaclassSix1]
import six

class A(six.with_metaclass(B)):
    pass

class B(type):
    def f(cls) -> int:
        return 0

reveal_type(A.f()) # N: Revealed type is "builtins.int"
[builtins fixtures/tuple.pyi]

[case testNewAnalyzerMetaclassSix2]
import six

@six.add_metaclass(B)
class A:
    pass

class B(type):
    def f(cls) -> int:
        return 0

reveal_type(A.f()) # N: Revealed type is "builtins.int"
[builtins fixtures/tuple.pyi]

[case testNewAnalyzerMetaclassSix3]
import six

class A(six.with_metaclass(B, Defer)):
    pass

class B(type):
    def f(cls) -> int:
        return 0

class Defer:
    x: str

reveal_type(A.f()) # N: Revealed type is "builtins.int"
reveal_type(A.x) # N: Revealed type is "builtins.str"
[builtins fixtures/tuple.pyi]

[case testNewAnalyzerMetaclassSix4]
import six

class B(type):
    def f(cls) -> int:
        return 0

class A(six.with_metaclass(B, Defer)):
    pass

class Defer:
    x: str

reveal_type(A.f()) # N: Revealed type is "builtins.int"
reveal_type(A.x) # N: Revealed type is "builtins.str"
[builtins fixtures/tuple.pyi]

[case testNewAnalyzerMetaclassFuture1]
import future.utils

class A(future.utils.with_metaclass(B)):
    pass

class B(type):
    def f(cls) -> int:
        return 0

reveal_type(A.f()) # N: Revealed type is "builtins.int"
[builtins fixtures/tuple.pyi]

[case testNewAnalyzerMetaclassFuture3]
import future.utils

class A(future.utils.with_metaclass(B, Defer)):
    pass

class B(type):
    def f(cls) -> int:
        return 0

class Defer:
    x: str

reveal_type(A.f()) # N: Revealed type is "builtins.int"
reveal_type(A.x) # N: Revealed type is "builtins.str"
[builtins fixtures/tuple.pyi]

[case testNewAnalyzerMetaclassFuture4]
# flags: --disable-error-code used-before-def
import future.utils

class B(type):
    def f(cls) -> int:
        return 0

reveal_type(A.f()) # N: Revealed type is "builtins.int"
reveal_type(A.x) # N: Revealed type is "builtins.str"

class A(future.utils.with_metaclass(B, Defer)):
    pass

class Defer:
    x: str
[builtins fixtures/tuple.pyi]

[case testNewAnalyzerFinalDefiningModuleVar]
from typing import Final

class D(C): ...
class C: ...

x: Final = C()
y: Final[C] = D()
bad: Final[D] = C()  # E: Incompatible types in assignment (expression has type "C", variable has type "D")

reveal_type(x)  # N: Revealed type is "__main__.C"
reveal_type(y)  # N: Revealed type is "__main__.C"
[case testNewAnalyzerFinalDefiningInstanceVar]
from typing import Final

class D: ...
class E(C): ...

class C:
    def __init__(self, x: D) -> None:
        self.x: Final = x
        self.y: Final[C] = E(D())
reveal_type(C(D()).x)  # N: Revealed type is "__main__.D"
reveal_type(C(D()).y)  # N: Revealed type is "__main__.C"
[case testNewAnalyzerFinalReassignModuleVar]
from typing import Final

class A: ...

x: Final = A()
x = A()  # E: Cannot assign to final name "x"

x2: Final = A()
def f2() -> None:
    global x2
    def f() -> None:
        g()
    x2 = A()  # E: Cannot assign to final name "x2"
    def g() -> None:
        f()

[case testNewAnalyzerFinalReassignModuleReexport]
import a
[file a.py]
from b import ID, A

class C(A): ...
ID = C()  # E: Cannot assign to final name "ID"
[file b.py]
from typing import Final
from a import C

class A:
    x: C

ID: Final = A()

[case testNewAnalyzerFinalOverrideInSubclass]
from typing import Final

class B:
    def __init__(self, x: int) -> None:
        self.x: Final = x

class C(B):
    x = 1  # E: Cannot assign to final name "x"

[case testNewAnalyzerAssignmentAfterStarImport]
import a
[file a.py]
from b import *

x = 1
def f(): ...
[file b.py]
from a import f
x: int

[case testNewAnalyzerClassLevelImport]
# flags: --ignore-missing-imports
class Test:
    import a
    def __init__(self) -> None:
        some_module = self.a

[case testNewAnalyzerAliasToNotReadyClass]
import a
[file a.py]
from b import B

x: A
A = B
[file b.py]
from typing import List
from a import x

class B(List[B]): pass

reveal_type(x[0][0])  # N: Revealed type is "b.B"
[builtins fixtures/list.pyi]

[case testNewAnalyzerAliasToNotReadyClass2]
from typing import List

x: A

class A(List[B]): pass
B = A

reveal_type(x[0][0])  # N: Revealed type is "__main__.A"
[builtins fixtures/list.pyi]

[case testNewAnalyzerAliasToNotReadyClass3]
# flags: --disable-error-code used-before-def
from typing import List

x: B
B = A
A = C
class C(List[B]): pass

reveal_type(x[0][0])  # N: Revealed type is "__main__.C"
[builtins fixtures/list.pyi]

[case testNewAnalyzerAliasToNotReadyNestedClass]
import a
[file a.py]
from b import Out

x: A
A = Out.B
[file b.py]
from typing import List
from a import x

class Out:
    class B(List[B]): pass

reveal_type(x[0][0])  # N: Revealed type is "b.Out.B"
[builtins fixtures/list.pyi]

[case testNewAnalyzerAliasToNotReadyNestedClass2]
from typing import List

x: Out.A

class Out:
    class A(List[B]): pass
B = Out.A

reveal_type(x[0][0])  # N: Revealed type is "__main__.Out.A"
[builtins fixtures/list.pyi]

[case testNewAnalyzerAliasToNotReadyClassGeneric]
import a
[file a.py]
from typing import Tuple
from b import B, T

x: A[int]
A = B[Tuple[T, T]]
[file b.py]
from typing import List, Generic, TypeVar
from a import x

class B(List[B], Generic[T]): pass
T = TypeVar('T')
reveal_type(x)  # N: Revealed type is "b.B[Tuple[builtins.int, builtins.int]]"
[builtins fixtures/list.pyi]

[case testNewAnalyzerAliasToNotReadyClassInGeneric]
import a
[file a.py]
from typing import Tuple
from b import B

x: A
A = Tuple[B, B]
[file b.py]
from typing import List
from a import x

class B(List[B]): pass

reveal_type(x)  # N: Revealed type is "Tuple[b.B, b.B]"
[builtins fixtures/list.pyi]

[case testNewAnalyzerAliasToNotReadyClassDoubleGeneric]
from typing import List, TypeVar, Union

T = TypeVar('T')

x: B[int]
A = Union[int, T]
B = A[List[T]]
class C(List[B[int]]): pass

y: C
reveal_type(x)  # N: Revealed type is "Union[builtins.int, builtins.list[builtins.int]]"
reveal_type(y[0])  # N: Revealed type is "Union[builtins.int, builtins.list[builtins.int]]"
[builtins fixtures/list.pyi]

[case testNewAnalyzerForwardAliasFromUnion]
from typing import Union, List

A = Union['B', 'C']

class D:
    x: List[A]

    def test(self) -> None:
        reveal_type(self.x[0].y)  # N: Revealed type is "builtins.int"

class B:
    y: int
class C:
    y: int
[builtins fixtures/list.pyi]

[case testNewAnalyzerAliasToNotReadyTwoDeferrals]
# flags: --disable-error-code used-before-def
from typing import List

x: B
B = List[C]
A = C
class C(List[A]): pass

reveal_type(x)  # N: Revealed type is "builtins.list[__main__.C]"
reveal_type(x[0][0])  # N: Revealed type is "__main__.C"
[builtins fixtures/list.pyi]

[case testNewAnalyzerAliasToNotReadyDirectBase]
# flags: --disable-error-code used-before-def
from typing import List

def test() -> None:
    x: B
    B = List[C]
    class C(B): pass

    reveal_type(x)
    reveal_type(x[0][0])
[builtins fixtures/list.pyi]
[out]
main:5: error: Cannot resolve name "B" (possible cyclic definition)
main:5: note: Recursive types are not allowed at function scope
main:6: error: Cannot resolve name "B" (possible cyclic definition)
main:6: note: Recursive types are not allowed at function scope
main:6: error: Cannot resolve name "C" (possible cyclic definition)
main:9: note: Revealed type is "Any"
main:10: note: Revealed type is "Any"

[case testNewAnalyzerAliasToNotReadyTwoDeferralsFunction]
# flags: --disable-error-code used-before-def
import a
[file a.py]
from typing import List
from b import D

def f(x: B) -> List[B]: ...
B = List[C]
A = C
class C(List[A]): pass
[file b.py]
from a import f
class D: ...
reveal_type(f)  # N: Revealed type is "def (x: builtins.list[a.C]) -> builtins.list[builtins.list[a.C]]"
[builtins fixtures/list.pyi]

[case testNewAnalyzerAliasToNotReadyDirectBaseFunction]
# flags: --disable-error-code used-before-def
import a
[file a.py]
from typing import List
from b import D

def f(x: B) -> List[B]: ...
B = List[C]
class C(B): pass

[file b.py]
from a import f
class D: ...
reveal_type(f)  # N: Revealed type is "def (x: builtins.list[a.C]) -> builtins.list[builtins.list[a.C]]"
[builtins fixtures/list.pyi]

[case testNewAnalyzerAliasToNotReadyMixed]
from typing import List, Union
x: A

class B(List[A]): pass
class C(List[A]): pass

A = Union[B, C]

reveal_type(x)  # N: Revealed type is "Union[__main__.B, __main__.C]"
reveal_type(x[0])  # N: Revealed type is "Union[__main__.B, __main__.C]"
[builtins fixtures/list.pyi]

[case testNewAnalyzerTrickyAliasInFuncDef]
import a
[file a.py]
from b import B
def func() -> B: ...
reveal_type(func())  # N: Revealed type is "builtins.list[Tuple[b.C, b.C]]"

[file b.py]
from typing import List, Tuple
from a import func

class A: ...
class C(A): ...
B = List[Tuple[C, C]]
[builtins fixtures/list.pyi]

[case testNewAnalyzerListComprehension]
from typing import List
class A: pass
class B: pass
a: List[A]
a = [x for x in a]
b: List[B] = [x for x in a] # E: List comprehension has incompatible type List[A]; expected List[B]
[builtins fixtures/for.pyi]

[case testNewAnalyzerDictionaryComprehension]
from typing import Dict, List, Tuple
abd: Dict[A, B]
abl: List[Tuple[A, B]]
abd = {a: b for a, b in abl}
x: Dict[B, A] = {a: b for a, b in abl} # E: Key expression in dictionary comprehension has incompatible type "A"; expected type "B" \
  # E: Value expression in dictionary comprehension has incompatible type "B"; expected type "A"
y: A = {a: b for a, b in abl} # E: Incompatible types in assignment (expression has type "Dict[A, B]", variable has type "A")
class A: pass
class B: pass
[builtins fixtures/dict.pyi]

[case testNewAnalyzerTypeArgBoundCheck]
from typing import TypeVar, Generic

class F(E): pass
class E: pass
T = TypeVar('T', bound=E)
class C(Generic[T]): pass

class D(B): pass

x: C[D] # E: Type argument "D" of "C" must be a subtype of "E"
y: C[F]

class B: pass

[case testNewAnalyzerTypeArgValueRestriction]
from typing import TypeVar, Generic

class F(E): pass
class E: pass
T = TypeVar('T', E, str)
class C(Generic[T]): pass

class D(B): pass

x: C[D] # E: Value of type variable "T" of "C" cannot be "D"
y: C[E]
z: C[str]

class B: pass

[case testNewAnalyzerTypeArgBoundCheckWithContext]
# flags: --show-error-context
import a
[file a.py]
from typing import TypeVar, Generic

T = TypeVar('T', bound=int)
class C(Generic[T]): pass

def f(x: C[str]) -> None: # E
    y: C[str] # E
class A(C[str]): # E
    z: C[str] # E
    def g(self, x: C[str]) -> None: # E
        a: C[str] # E
[out]
main:2: note: In module imported here:
tmp/a.py: note: In function "f":
tmp/a.py:6: error: Type argument "str" of "C" must be a subtype of "int"
tmp/a.py:7: error: Type argument "str" of "C" must be a subtype of "int"
tmp/a.py: note: In class "A":
tmp/a.py:8: error: Type argument "str" of "C" must be a subtype of "int"
tmp/a.py:9: error: Type argument "str" of "C" must be a subtype of "int"
tmp/a.py: note: In member "g" of class "A":
tmp/a.py:10: error: Type argument "str" of "C" must be a subtype of "int"
tmp/a.py:11: error: Type argument "str" of "C" must be a subtype of "int"

[case testNewAnalyzerTypeArgBoundCheckDifferentNodes]
from typing import TypeVar, Generic, NamedTuple, NewType, Union, Any, cast, overload
from mypy_extensions import TypedDict

T = TypeVar('T', bound=int)
class C(Generic[T]): pass
class C2(Generic[T]): pass

A = C[str] # E: Type argument "str" of "C" must be a subtype of "int" \
           # E: Value of type variable "T" of "C" cannot be "str"
B = Union[C[str], int] # E: Type argument "str" of "C" must be a subtype of "int"
S = TypeVar('S', bound=C[str]) # E: Type argument "str" of "C" must be a subtype of "int"
U = TypeVar('U', C[str], str) # E: Type argument "str" of "C" must be a subtype of "int"
N = NamedTuple('N', [
    ('x', C[str])]) # E: Type argument "str" of "C" must be a subtype of "int"
class N2(NamedTuple):
    x: C[str]  # E: Type argument "str" of "C" must be a subtype of "int"
class TD(TypedDict):
    x: C[str]  # E: Type argument "str" of "C" must be a subtype of "int"
class TD2(TD):
    y: C2[str]  # E: Type argument "str" of "C2" must be a subtype of "int"
NT = NewType('NT',
             C[str]) # E: Type argument "str" of "C" must be a subtype of "int"
class D(
        C[str]): # E: Type argument "str" of "C" must be a subtype of "int"
    pass

TD3 = TypedDict('TD3', {'x': C[str]}) # E: Type argument "str" of "C" must be a subtype of "int"

a: Any
for i in a: # type: C[str]  # E: Type argument "str" of "C" must be a subtype of "int"
    pass

with a as w: # type: C[str]  # E: Type argument "str" of "C" must be a subtype of "int"
    pass

cast(C[str], a)  # E: Type argument "str" of "C" must be a subtype of "int"
C[str]()  # E: Value of type variable "T" of "C" cannot be "str"

def f(s: S, y: U) -> None: pass  # No error here

@overload
def g(x: C[str]) -> int: ...  # E: Type argument "str" of "C" must be a subtype of "int"
@overload
def g(x: int) -> int: ...
def g(x: Union[C[str], int]) -> int:  # E: Type argument "str" of "C" must be a subtype of "int"
    y: C[object]  # E: Type argument "object" of "C" must be a subtype of "int"
    return 0
[builtins fixtures/tuple.pyi]

[case testNewAnalyzerTypeArgBoundCheckWithStrictOptional]
# flags: --config-file tmp/mypy.ini
import a

[file b.py]
from typing import TypeVar, Generic

x: C[None]
y: C[str]  # E: Type argument "str" of "C" must be a subtype of "int"
z: C[int]

T = TypeVar('T', bound=int)
class C(Generic[T]):
    pass

[file a.py]
from b import C

x: C[None]  # E: Type argument "None" of "C" must be a subtype of "int"
y: C[str]  # E: Type argument "str" of "C" must be a subtype of "int"
z: C[int]

[file mypy.ini]
\[mypy-a]
strict_optional = True
\[mypy-b]
strict_optional = False


[case testNewAnalyzerTypeArgBoundCheckWithStrictOptionalPyProjectTOML]
# flags: --config-file tmp/pyproject.toml
import a

[file b.py]
from typing import TypeVar, Generic

x: C[None]
y: C[str]  # E: Type argument "str" of "C" must be a subtype of "int"
z: C[int]

T = TypeVar('T', bound=int)
class C(Generic[T]):
    pass

[file a.py]
from b import C

x: C[None]  # E: Type argument "None" of "C" must be a subtype of "int"
y: C[str]  # E: Type argument "str" of "C" must be a subtype of "int"
z: C[int]

[file pyproject.toml]
\[[tool.mypy.overrides]]
module = 'a'
strict_optional = true
\[[tool.mypy.overrides]]
module = 'b'
strict_optional = false


[case testNewAnalyzerProperty]
class A:
    @property
    def x(self) -> B:
        return 0  # E: Incompatible return value type (got "int", expected "B")

    @property
    def y(self) -> B:
        pass

    @y.setter
    def y(self, x: B) -> None:
        pass

class B: pass

a = A()
reveal_type(a.x)  # N: Revealed type is "__main__.B"
a.y = 1  # E: Incompatible types in assignment (expression has type "int", variable has type "B")
[builtins fixtures/property.pyi]

[case testNewAnalyzerAliasesFixedFew]
from typing import List, Generic, TypeVar
T = TypeVar('T')
class C(Generic[T]):
    ...
A = List[C]
x: A

def func(x: List[C[T]]) -> T:
    ...

reveal_type(x)  # N: Revealed type is "builtins.list[__main__.C[Any]]"
reveal_type(func(x))  # N: Revealed type is "Any"
[builtins fixtures/list.pyi]

[case testNewAnalyzerAliasesFixedMany]
from typing import List, Generic, TypeVar

T = TypeVar('T')
class C(Generic[T]):
    ...

def func(x: List[C[T]]) -> T:
    ...

x: A
A = List[C[int, str]]  # E: "C" expects 1 type argument, but 2 given

reveal_type(x)  # N: Revealed type is "builtins.list[__main__.C[Any]]"
reveal_type(func(x))  # N: Revealed type is "Any"


[builtins fixtures/list.pyi]

[case testNewAnalyzerBuiltinAliasesFixed]
from typing import List, Optional
x: Optional[List] = None
y: List[str]

reveal_type(x)  # N: Revealed type is "Union[builtins.list[Any], None]"
x = ['a', 'b']
reveal_type(x)  # N: Revealed type is "builtins.list[Any]"
x.extend(y)
[builtins fixtures/list.pyi]

[case testNewAnalyzerImportPriosB]
import b
[file a.py]
from b import x
reveal_type(x)  # N: Revealed type is "Tuple[builtins.int, builtins.int]"
[file b.py]
import a
x = (1, 2)
[builtins fixtures/tuple.pyi]

[case testNewAnalyzerImportPriosA]
import a
[file a.py]
from b import x
reveal_type(x)  # N: Revealed type is "Tuple[builtins.int, builtins.int]"
[file b.py]
import a
x = (1, 2)
[builtins fixtures/tuple.pyi]

[case testNewAnalyzerConditionalFunc]
if int():
    def f(x: int) -> None:
        pass
    def g(x: int) -> None:
        pass
elif bool():
    def f(x: int) -> None:
        1()  # E: "int" not callable
    def g(x: str) -> None:  # E: All conditional function variants must have identical signatures \
                            # N: Original: \
                            # N:     def g(x: int) -> None \
                            # N: Redefinition: \
                            # N:     def g(x: str) -> None
        pass
else:
    def f(x: int) -> None:
        ''()  # E: "str" not callable

reveal_type(g) # N: Revealed type is "def (x: builtins.int)"

[case testNewAnalyzerConditionalFuncDefer]
if int():
    def f(x: A) -> None:
        pass
    def g(x: A) -> None:
        pass
else:
    def f(x: A) -> None:
        1()  # E: "int" not callable
    def g(x: str) -> None:  # E: All conditional function variants must have identical signatures \
                            # N: Original: \
                            # N:     def g(x: A) -> None \
                            # N: Redefinition: \
                            # N:     def g(x: str) -> None

        pass

reveal_type(g) # N: Revealed type is "def (x: __main__.A)"

class A: pass

[case testNewAnalyzerConditionalDecoratedFunc]
from typing import Callable

def dec(f: Callable[[int], None]) -> Callable[[str], None]:
    pass

if int():
    from m import f
else:
    @dec
    def f(x: int) -> None:
        1()  # E: "int" not callable
reveal_type(f) # N: Revealed type is "def (x: builtins.str)"
[file m.py]
def f(x: str) -> None: pass

[case testNewAnalyzerConditionallyDefineFuncOverVar]
from typing import Callable

if int():
    f: Callable[[str], None]
else:
    def f(x: str) -> None:
        ...
reveal_type(f) # N: Revealed type is "def (builtins.str)"

[case testNewAnalyzerConditionallyDefineFuncOverClass]
class C:
    1()  # E: "int" not callable
def C() -> None:  # E: Name "C" already defined on line 1
    ''()  # E: "str" not callable

[case testNewAnalyzerTupleIteration]
from typing import Union, Tuple, NamedTuple

class T(Tuple[B, C]):
    pass

class A: pass
class B(A): pass
class C(A): pass

class NTInt(NamedTuple):
    x: int
    y: int

class NTStr(NamedTuple):
    x: str
    y: str

t1: T
reveal_type(t1.__iter__) # N: Revealed type is "def () -> typing.Iterator[Union[__main__.B, __main__.C]]"

t2: NTInt
reveal_type(t2.__iter__) # N: Revealed type is "def () -> typing.Iterator[builtins.int]"
nt: Union[NTInt, NTStr]
reveal_type(nt.__iter__) # N: Revealed type is "Union[def () -> typing.Iterator[builtins.int], def () -> typing.Iterator[builtins.str]]"
for nx in nt:
    reveal_type(nx) # N: Revealed type is "Union[builtins.int, builtins.str]"

t: Union[Tuple[int, int], Tuple[str, str]]
for x in t:
    reveal_type(x) # N: Revealed type is "Union[builtins.int, builtins.str]"
[builtins fixtures/for.pyi]

[case testNewAnalyzerFallbackUpperBoundCheckAndFallbacks]
from typing import TypeVar, Generic, Tuple

class A: pass
class B: pass
class C(B): pass

S = TypeVar('S', bound='Tuple[G[A], ...]')

class GG(Generic[S]): pass

g: GG[Tuple[G[B], G[C]]] # E: Type argument "Tuple[G[B], G[C]]" of "GG" must be a subtype of "Tuple[G[A], ...]" \
                         # E: Type argument "B" of "G" must be a subtype of "A" \
                         # E: Type argument "C" of "G" must be a subtype of "A"

T = TypeVar('T', bound=A, covariant=True)

class G(Generic[T]): pass

t: Tuple[G[B], G[C]] # E: Type argument "B" of "G" must be a subtype of "A" \
                     # E: Type argument "C" of "G" must be a subtype of "A"
reveal_type(t.__iter__) # N: Revealed type is "def () -> typing.Iterator[__main__.G[__main__.B]]"
[builtins fixtures/tuple.pyi]

[case testNewAnalyzerClassKeywordsForward]
class C(B, other=A): ...
class B: ...
class A: ...

[case testNewAnalyzerClassKeywordsCyclic]
from typing import List

class C(List[C], other=C): ...
[builtins fixtures/list.pyi]

[case testNewAnalyzerClassKeywordsError]
class C(other=asdf): ...  # E: Name "asdf" is not defined

[case testNewAnalyzerMissingImport]
# flags: --ignore-missing-imports
import non_existing

x: C
class C: ...

[case testNewAnalyzerMissingImportFrom]
# flags: --ignore-missing-imports
from non_existing import stuff

x: C
class C: ...

[case testNewAnalyzerFollowSkip]
# flags: --follow-imports=skip
from other import y
x: C
class C: ...
[file other.py]
y = 1

[case testNewAnalyzerMissingImportErrors]
# flags: --ignore-missing-imports
from non_existing import stuff, other_stuff

stuff = 1  # OK
other_stuff: int = 1  # E: Name "other_stuff" already defined (possibly by an import)

x: C
class C: ...

[case testNewAnalyzerMissingImportErrorsRedefinition]
# flags: --ignore-missing-imports

class Other: ...
from non_existing import Other  # E: Name "Other" already defined on line 3
from non_existing import Cls
class Cls: ...  # E: Name "Cls" already defined (possibly by an import)

x: C
class C: ...

[case testNewAnalyzerTupleInit]
from typing import Tuple

c: C
class C(Tuple[int, str]):
    def __init__(self) -> None: pass
[builtins fixtures/tuple.pyi]

[case testNewAnalyzerNotAnAlias]
class Meta(type):
    x = int()

class C(metaclass=Meta):
    pass

y = C.x
reveal_type(y)  # N: Revealed type is "builtins.int"

[case testNewAnalyzerFunctionError]
def f(x: asdf) -> None:  # E: Name "asdf" is not defined
    pass

[case testNewAnalyzerEnumRedefinition]
from enum import Enum

A = Enum('A', ['x', 'y'])
A = Enum('A', ['z', 't'])  # E: Name "A" already defined on line 3

[case testNewAnalyzerNewTypeRedefinition]
from typing import NewType

A = NewType('A', int)
A = NewType('A', str)  # E: Cannot redefine "A" as a NewType \
                       # E: Name "A" already defined on line 3

[case testNewAnalyzerNewTypeForwardClass]
from typing import NewType, List

x: C
reveal_type(x[0])  # N: Revealed type is "__main__.C"

C = NewType('C', 'B')

class B(List[C]):
    pass
[builtins fixtures/list.pyi]

[case testNewAnalyzerNewTypeForwardClassAlias]
from typing import NewType, List

x: D
reveal_type(x[0])  # N: Revealed type is "__main__.C"

C = NewType('C', 'B')
D = C

class B(List[D]):
    pass
[builtins fixtures/list.pyi]

[case testNewAnalyzerNewTypeForwardClassAliasReversed]
from typing import NewType, List

x: D
reveal_type(x[0][0])  # N: Revealed type is "__main__.C"

D = C  # E: Name "C" is used before definition
C = NewType('C', 'List[B]')

class B(List[C]):
    pass
[builtins fixtures/list.pyi]

[case testNewAnalyzerNewTypeForwardClassAliasDirect]
# flags: --disable-error-code used-before-def
from typing import NewType, List

def test() -> None:
    x: D
    reveal_type(x[0][0])

    D = List[C]
    C = NewType('C', 'B')

    class B(D):
        pass
[builtins fixtures/list.pyi]
[out]
main:5: error: Cannot resolve name "D" (possible cyclic definition)
main:5: note: Recursive types are not allowed at function scope
main:6: note: Revealed type is "Any"
main:8: error: Cannot resolve name "D" (possible cyclic definition)
main:8: note: Recursive types are not allowed at function scope
main:8: error: Cannot resolve name "C" (possible cyclic definition)
main:9: error: Argument 2 to NewType(...) must be a valid type
main:9: error: Cannot resolve name "B" (possible cyclic definition)
main:9: note: Recursive types are not allowed at function scope

-- Copied from check-classes.test (tricky corner cases).
[case testNewAnalyzerNoCrashForwardRefToBrokenDoubleNewTypeClass]
from typing import Any, Dict, List, NewType

Foo = NewType('NotFoo', int)  # type: ignore
Foos = NewType('Foos', List[Foo])

x: C
class C:
    def frob(self, foos: Dict[Any, Foos]) -> None:
        foo = foos.get(1)
        assert foo
        dict(foo)
[builtins fixtures/dict.pyi]

[case testNewAnalyzerForwardTypeAliasInBase]
from typing import List, Generic, TypeVar, NamedTuple
T = TypeVar('T')

def test() -> None:
    class C(A, B):  # E: Cannot resolve name "A" (possible cyclic definition) \
                    # N: Recursive types are not allowed at function scope
        pass
    class G(Generic[T]): pass
    A = G[C]  # E: Cannot resolve name "A" (possible cyclic definition) \
              # N: Recursive types are not allowed at function scope
    class B(NamedTuple):
        x: int

    y: C
    reveal_type(y.x)  # N: Revealed type is "builtins.int"
    reveal_type(y[0])  # N: Revealed type is "builtins.int"
    x: A
    reveal_type(x)  # N: Revealed type is "__main__.G@7[Tuple[builtins.int, fallback=__main__.C@5]]"
[builtins fixtures/list.pyi]

[case testNewAnalyzerDuplicateTypeVar]
from typing import TypeVar, Generic, Any

T = TypeVar('T', bound='B[Any]')
# The "int" error is because of typing fixture.
T = TypeVar('T', bound='C')  # E: Cannot redefine "T" as a type variable \
                           # E: Invalid assignment target

class B(Generic[T]):
    x: T
class C: ...

x: B[int]  # E: Type argument "int" of "B" must be a subtype of "B[Any]"
y: B[B[Any]]
reveal_type(y.x)  # N: Revealed type is "__main__.B[Any]"
[builtins fixtures/tuple.pyi]
[typing fixtures/typing-full.pyi]

[case testNewAnalyzerDuplicateTypeVarImportCycle]
# flags: --disable-error-code used-before-def
import a
[file a.py]
from typing import TypeVar, Any
from b import B, C

T = TypeVar('T', bound=B[Any])
T = TypeVar('T', bound=C)

[file b.py]
from typing import Generic, Any
from a import T

class B(Generic[T]):
    x: T
class C: ...

x: B[int]
y: B[B[Any]]
reveal_type(y.x)
[builtins fixtures/tuple.pyi]
[typing fixtures/typing-full.pyi]
[out]
tmp/b.py:8: error: Type argument "int" of "B" must be a subtype of "B[Any]"
tmp/b.py:10: note: Revealed type is "b.B[Any]"
tmp/a.py:5: error: Cannot redefine "T" as a type variable
tmp/a.py:5: error: Invalid assignment target

[case testNewAnalyzerDuplicateTypeVarImportCycleWithAliases]
# flags: --disable-error-code used-before-def
import a
[file a.py]
from typing import TypeVar, Any
from b import BA, C

T = TypeVar('T', bound=BAA[Any])
T = TypeVar('T', bound=C)
BAA = BA

[file b.py]
from typing import Generic, Any
from a import T

BA = B
class B(Generic[T]):
    x: T
class C: ...

x: B[int]
y: B[B[Any]]
reveal_type(y.x)
[out]
tmp/b.py:9: error: Type argument "int" of "B" must be a subtype of "B[Any]"
tmp/b.py:11: note: Revealed type is "b.B[Any]"
tmp/a.py:5: error: Cannot redefine "T" as a type variable
tmp/a.py:5: error: Invalid assignment target

[case testNewAnalyzerTypeVarBoundInCycle]
import factory, box

[file factory.py]
from typing import Generic, Type

from box import BoxT

class Factory(Generic[BoxT]):
    value: int

    def create(self, boxClass: Type[BoxT]) -> BoxT:
        reveal_type(boxClass.create(self))  # N: Revealed type is "BoxT`1"
        return boxClass.create(self)

[file box.py]
from typing import TYPE_CHECKING, Type, TypeVar

if TYPE_CHECKING:
    from factory import Factory

BoxT = TypeVar('BoxT', bound='Box')

class Box:
    @classmethod
    def create(cls: Type[BoxT], f: Factory) -> BoxT:
        return cls(f.value)

    def __init__(self, value: int) -> None: ...
[builtins fixtures/classmethod.pyi]
[typing fixtures/typing-medium.pyi]

[case testNewAnalyzerCastForward1]
from typing import cast

x = cast('C', None)
class A:
    def foo(self) -> None:
        self.x = cast('C', None)

reveal_type(x)  # N: Revealed type is "__main__.C"
reveal_type(A().x)  # N: Revealed type is "__main__.C"

class C(A): ...

[case testNewAnalyzerCastForward2]
from typing import cast

x = cast('C', None)

reveal_type(x)  # N: Revealed type is "builtins.int"

C = int

[case testNewAnalyzerCastForward3]
from typing import cast, NamedTuple

x = cast('C', None)

reveal_type(x)  # N: Revealed type is "Tuple[builtins.int, fallback=__main__.C]"
reveal_type(x.x)  # N: Revealed type is "builtins.int"

C = NamedTuple('C', [('x', int)])
[builtins fixtures/tuple.pyi]

[case testNewAnalyzerApplicationForward1]
# flags: --disable-error-code used-before-def
from typing import Generic, TypeVar

x = C[int]()
reveal_type(x)  # N: Revealed type is "__main__.C[builtins.int]"

T = TypeVar('T')
class C(Generic[T]): ...

[case testNewAnalyzerApplicationForward2]
from typing import Generic, TypeVar

T = TypeVar('T')
class C(Generic[T]): ...

x = C['A']()
reveal_type(x)  # N: Revealed type is "__main__.C[__main__.A]"

class A: ...

[case testNewAnalyzerApplicationForward3]
from typing import Generic, TypeVar

class A: ...
T = TypeVar('T')
class C(Generic[T]): ...
x = C[A]()
reveal_type(x)  # N: Revealed type is "__main__.C[__main__.A]"

[case testNewAnalyzerApplicationForward4]
# flags: --disable-error-code used-before-def
from typing import Generic, TypeVar

x = C[A]()  # E: Value of type variable "T" of "C" cannot be "A"
reveal_type(x)  # N: Revealed type is "__main__.C[__main__.A]"

T = TypeVar('T', bound='D')
class C(Generic[T]): ...

class A: ...
class D: ...

[case testNewAnalyzerAddedSubStarImport_incremental]
# TODO: This can be removed once testAddedSubStarImport is enabled in check-incremental.test.
# cmd: mypy -m a pack pack.mod b
# cmd2: mypy -m other
[file a.py]
from pack import *
[file pack/__init__.py]
[file pack/mod.py]
[file b.py]
import pack.mod
[file other.py]
import a
[out]
[out2]

[case testNewAnalyzerModuleGetattrSerialize_incremental]
import a
[file a.py]
import p
[file a.py.2]
import p
reveal_type(p.y)
[file p.pyi]
from pp import x
y = x
[file pp.pyi]
def __getattr__(attr): ...
[out2]
tmp/a.py:2: note: Revealed type is "Any"

[case testNewAnanlyzerTrickyImportPackage]
from lib import config
import lib

reveal_type(lib.config.x)  # N: Revealed type is "builtins.int"
reveal_type(config.x)  # N: Revealed type is "builtins.int"

[file lib/__init__.py]
from lib.config import config

[file lib/config.py]
class Config:
    x: int

config = Config()
[builtins fixtures/module.pyi]

[case testNewAnanlyzerTrickyImportPackageAlt]
import lib.config
import lib.config as tmp

reveal_type(lib.config.x)  # N: Revealed type is "builtins.int"
# TODO: this actually doesn't match runtime behavior, variable wins.
tmp.x  # E: Module has no attribute "x"

[file lib/__init__.py]
from lib.config import config

[file lib/config.py]
class Config:
    x: int

config = Config()
[builtins fixtures/module.pyi]

[case testNewAnanlyzerTrickyImportPackage_incremental]
import a

[file a.py]
from lib import config
import lib

[file a.py.2]
from lib import config
import lib

reveal_type(lib.config.x)
reveal_type(config.x)

[file lib/__init__.py]
from lib.config import config

[file lib/config.py]
class Config:
    x: int

config = Config()
[builtins fixtures/module.pyi]
[out2]
tmp/a.py:4: note: Revealed type is "builtins.int"
tmp/a.py:5: note: Revealed type is "builtins.int"

[case testNewAnalyzerRedefineAsClass]
from typing import Any
from other import C  # type: ignore

y = 'bad'

class C:  # E: Name "C" already defined (possibly by an import)
    def meth(self, other: int) -> None:
        y()  # E: "str" not callable

[case testNewAnalyzerRedefineAsOverload]
from typing import overload

y = 'bad'

if int():
    def f(x: int) -> None:
        pass
else:
    @overload  # E: Name "f" already defined on line 6
    def f(x: int) -> None: ...
    @overload
    def f(x: str) -> None: ...
    def f(x) -> None:
        y()  # E: "str" not callable

[case testNewAnalyzerFirstAliasTargetWins]
class DesiredTarget:
    attr: int

if int():
    Alias = DesiredTarget
else:
    class DummyTarget:
        pass
    Alias = DummyTarget  # type: ignore

x: Alias
reveal_type(x.attr)  # N: Revealed type is "builtins.int"
[case testNewAnalyzerFirstVarDefinitionWins]
x = y  # E: Name "y" is used before definition
x = 1

# We want to check that the first definition creates the variable.
def x() -> None: ...  # E: Name "x" already defined on line 1
y = 2

[case testNewAnalyzerImportStarSpecialCase]
import unittest
[file unittest/__init__.pyi]
from unittest.suite import *

def load_tests() -> TestSuite: ...
[file unittest/suite.pyi]
from typing import Union # Iterable not imported
import unittest.case

_TestType = Union[unittest.case.TestCase]

class BaseTestSuite(Iterable[_TestType]):
    ...

class TestSuite(BaseTestSuite):
    ...

[file unittest/case.pyi]
class TestCase: ...

[out]
tmp/unittest/suite.pyi:6: error: Name "Iterable" is not defined
tmp/unittest/suite.pyi:6: note: Did you forget to import it from "typing"? (Suggestion: "from typing import Iterable")

[case testNewAnalyzerNewTypeSpecialCase]
from typing import NewType
from typing_extensions import Final, Literal

X = NewType('X', int)

var1: Final = 1

def force1(x: Literal[1]) -> None: pass

force1(reveal_type(var1))            # N: Revealed type is "Literal[1]"
[builtins fixtures/tuple.pyi]

[case testNewAnalyzerReportLoopInMRO]
class A(A): ... # E: Cannot resolve name "A" (possible cyclic definition)
[out]

[case testNewSemanticAnalyzerUnimportedSpecialCase]
# flags: --ignore-missing-imports
import other
import p.u

[file p/__init__.py]

[file p/u.pyi]
from . import c
x: c.C

[file other.py]
from p.c import B

[out]

[case testNewSemanticAnalyzerQualifiedFunctionAsType]
import m

x: m.C.a.b # E: Name "m.C.a.b" is not defined

[file m.py]
def C(): pass

[case testNewSemanticAnalyzerModulePrivateRefInMiddleOfQualified]
import m

x: m.n.C # E: Name "m.n.C" is not defined
reveal_type(x) # N: Revealed type is "Any"

[file m.pyi]
import n

[file n.pyi]
class C: pass

[case testNewAnalyzerModuleGetAttr]
import m
import n

x: m.n.C
y: n.D
[file m.py]
import n
[file n.py]
def __getattr__(x): pass

[case testNewAnalyzerReportLoopInMRO2]
def f() -> None:
    class A(A): ...  # E: Cannot resolve name "A" (possible cyclic definition) \
                     # N: Recursive types are not allowed at function scope

[case testNewAnalyzerUnsupportedBaseClassInsideFunction]
class C:
    class E: pass

    def f(self) -> None:
        # TODO: Error message could be better
        class D(self.E): # E: Name "self.E" is not defined
            pass

[case testNewAnalyzerShadowOuterDefinitionBasedOnOrderSinglePass]
# Only one semantic analysis pass
class X: pass
class C:
    X = X
    reveal_type(X)  # N: Revealed type is "def () -> __main__.X"
reveal_type(C.X)  # N: Revealed type is "def () -> __main__.X"

[case testNewAnalyzerShadowOuterDefinitionBasedOnOrderTwoPasses]
c: C  # Force second semantic analysis pass
class X: pass
class C:
    X = X
    reveal_type(X)  # N: Revealed type is "def () -> __main__.X"

reveal_type(C.X)  # N: Revealed type is "def () -> __main__.X"

[case testNewAnalyzerAnnotationConflictsWithAttributeSinglePass]
class C:
    def x(self) -> int:
        return 0

    def __init__(self) -> None:
        self.int = ''

    def y(self) -> int:
        return 0

    z: str

    def str(self) -> str:
        return 0 # E: Incompatible return value type (got "int", expected "str")

    zz: str # E: Function "__main__.C.str" is not valid as a type \
            # N: Perhaps you need "Callable[...]" or a callback protocol?

reveal_type(C().x()) # N: Revealed type is "builtins.int"
reveal_type(C().y()) # N: Revealed type is "builtins.int"
reveal_type(C().z) # N: Revealed type is "builtins.str"
reveal_type(C().str()) # N: Revealed type is "builtins.str"

[case testNewAnalyzerAnnotationConflictsWithAttributeTwoPasses]
c: C  # Force second semantic analysis pass

class C:
    def x(self) -> int:
        return 0

    def __init__(self) -> None:
        self.int = ''

    def y(self) -> int:
        return 0

    z: str

    def str(self) -> str:
        return 0 # E: Incompatible return value type (got "int", expected "str")

    zz: str # E: Function "__main__.C.str" is not valid as a type \
            # N: Perhaps you need "Callable[...]" or a callback protocol?

reveal_type(C().x()) # N: Revealed type is "builtins.int"
reveal_type(C().y()) # N: Revealed type is "builtins.int"
reveal_type(C().z) # N: Revealed type is "builtins.str"
reveal_type(C().str()) # N: Revealed type is "builtins.str"

[case testNewAnalyzerNameConflictsAndMultiLineDefinition]
c: C  # Force second semantic analysis pass

class X: pass

class C:
    X = (
        X)

    def str(self
            ) -> str:
        return 0 # E: Incompatible return value type (got "int", expected "str")

reveal_type(C.X) # E:  # N: Revealed type is "def () -> __main__.X"
reveal_type(C().str()) # N: Revealed type is "builtins.str"

[case testNewAnalyzerNameNotDefinedYetInClassBody]
class C:
    X = Y  # E: Name "Y" is not defined
    Y = 1

    f = g  # E: Name "g" is not defined

    def g(self) -> None: pass

reveal_type(C.X)  # N: Revealed type is "Any"

[case testNewAnalyzerImportedNameUsedInClassBody]
import m

[file m.py]
class C:
    from mm import f  # E: Unsupported class scoped import
    @dec(f)
    def m(self): pass

def dec(f): pass
[file mm.py]
# 1 padding to increase line number of 'f'
# 2 padding
# 3 padding
# 4 padding
# 5 padding
# 6 padding
def f(): pass


[case testNewAnalyzerImportedNameUsedInClassBody2]
import m

[file m/__init__.py]
class C:
    from m.m import f  # E: Unsupported class scoped import
    @dec(f)
    def m(self): pass

def dec(f): pass
[file m/m.py]
# 1 padding to increase line number of 'f'
# 2 padding
# 3 padding
# 4 padding
# 5 padding
# 6 padding
def f(): pass

[case testNewAnalyzerOverrideClassWithTypeAlias]
from typing import Generic, TypeVar

T = TypeVar('T')

class C(Generic[T]):
    pass
# TODO: Error message is confusing
C = C[int]  # E: Cannot assign to a type \
            # E: Incompatible types in assignment (expression has type "Type[C[Any]]", variable has type "Type[C[Any]]")
x: C
reveal_type(x) # N: Revealed type is "__main__.C[Any]"
[out]
[out2]

[case testNewAnalyzerClassVariableOrdering]
def foo(x: str) -> None: pass

class Something:
    def run(self) -> None:
        foo(self.IDS[0])  # E: Argument 1 to "foo" has incompatible type "int"; expected "str"

    IDS = [87]
[builtins fixtures/list.pyi]

[case testNewAnalyzerPlaceholderFromOuterScope]
import b
[file a.py]
import b
class A(B): ...
class B: ...

[file b.py]
from a import A

class C:
    A = A  # Initially rvalue will be a placeholder

reveal_type(C.A)  # N: Revealed type is "def () -> a.A"

[case testNewAnalyzerFinalLiteralInferredAsLiteralWithDeferral]
from typing_extensions import Final, Literal

defer: Yes

var: Final = 42
def force(x: Literal[42]) -> None: pass
force(reveal_type(var))  # N: Revealed type is "Literal[42]"

class Yes: ...
[builtins fixtures/tuple.pyi]

[case testNewAnalyzerImportCycleWithIgnoreMissingImports]
# flags: --ignore-missing-imports
import p
reveal_type(p.get)  # N: Revealed type is "def () -> builtins.int"

[file p/__init__.pyi]
from . import api
get = api.get

[file p/api.pyi]
import p

def get() -> int: ...

[case testUseObsoleteNameForTypeVar3]
import typing
t = typing.typevar('t') # E: Module has no attribute "typevar"
[builtins fixtures/module.pyi]

[case testNewAnalyzerImportFromTopLevelFunction]
import a.b  # This works at runtime
reveal_type(a.b)  # N
[file a/__init__.py]
from .b import B
from . import b as c
def b() -> None: pass
reveal_type(b)  # N
reveal_type(c.B())  # N
x: Forward
class Forward:
    ...

[file a/b.py]
class B: ...
[builtins fixtures/module.pyi]

[out]
tmp/a/__init__.py:4: note: Revealed type is "def ()"
tmp/a/__init__.py:5: note: Revealed type is "a.b.B"
main:2: note: Revealed type is "def ()"

[case testNewAnalyzerImportFromTopLevelAlias]
import a.b  # This works at runtime
reveal_type(a.b)  # N
[file a/__init__.py]
from .b import B
from . import b as c
b = int
y: b
reveal_type(y)  # N
reveal_type(c.B)  # N
x: Forward
class Forward:
    ...

[file a/b.py]
class B: ...
[builtins fixtures/module.pyi]

[out]
tmp/a/__init__.py:5: note: Revealed type is "builtins.int"
tmp/a/__init__.py:6: note: Revealed type is "def () -> a.b.B"
main:2: note: Revealed type is "def () -> builtins.int"

[case testNewAnalyzerImportAmbiguousWithTopLevelFunction]
import a.b  # This works at runtime
x: a.b.B  # E
reveal_type(a.b)  # N
[file a/__init__.py]
import a.b
import a.b as c
def b() -> None: pass
reveal_type(b)  # N
reveal_type(c.B())  # N
x: Forward
class Forward:
    ...

[file a/b.py]
class B: ...
[builtins fixtures/module.pyi]

[out]
tmp/a/__init__.py:4: note: Revealed type is "def ()"
tmp/a/__init__.py:5: note: Revealed type is "a.b.B"
main:2: error: Name "a.b.B" is not defined
main:3: note: Revealed type is "def ()"

[case testNewAnalyzerConfusingImportConflictingNames]
# flags: --follow-imports=skip --ignore-missing-imports
# cmd: mypy -m other a.b a
[file a/__init__.py]
[file a/b/__init__.py]
import other
import a.b.a
import a.b.c

[file other.py]
from a.b.a import foo
[builtins fixtures/module.pyi]
[out]

[case testNewAnalyzerNamedTupleMethod]
from typing import NamedTuple

g: N

class N(NamedTuple):
    def f(self) -> None:
        b = (
            a
            for a in [1]
        )
        b
[builtins fixtures/tuple.pyi]

[case testWithMultipleTargetsDeferred]
a: A

class A:
    def __enter__(self) -> int: pass
    def __exit__(self, x, y, z): pass

with A() as x, A() as y:  # type: int, int
    pass

[case testNewAnalyzerLessErrorsNeedAnnotation]
from typing import TypeVar, Optional

T = TypeVar('T')

def f(x: Optional[T] = None) -> T: ...

x = f()  # E: Need type annotation for "x"
y = x

def g() -> None:
    x = f()  # E: Need type annotation for "x"
    y = x

[case testNewAnalyzerLessErrorsNeedAnnotationList]
x = []  # type: ignore
reveal_type(x)  # N: Revealed type is "builtins.list[Any]"

def g() -> None:
    x = []  # type: ignore
    reveal_type(x)  # N: Revealed type is "builtins.list[Any]"
[builtins fixtures/list.pyi]

[case testNewAnalyzerLessErrorsNeedAnnotationNested]
from typing import TypeVar, Optional, Generic

T = TypeVar('T')
class G(Generic[T]): ...

def f(x: Optional[T] = None) -> G[T]: ...

x = f()  # E: Need type annotation for "x"
y = x
reveal_type(y)  # N: Revealed type is "__main__.G[Any]"

def g() -> None:
    x = f()  # E: Need type annotation for "x"
    y = x
    reveal_type(y)  # N: Revealed type is "__main__.G[Any]"

[case testNewAnalyzerRedefinedNonlocal]
# flags: --disable-error-code=annotation-unchecked
import typing

def f():
    bar = []  # type: typing.List[int]

    def foo():
        nonlocal bar
        bar = []  # type: typing.List[int]

def g() -> None:
    bar = []  # type: typing.List[int]

    def foo() -> None:
        nonlocal bar
        bar = []  # type: typing.List[int] # E: Name "bar" already defined on line 12
[builtins fixtures/list.pyi]

[case testNewAnalyzerMoreInvalidTypeVarArgumentsDeferred]
from typing import TypeVar, Generic

defer: Yes

S = TypeVar('S', covariant=True, contravariant=True)  # E: TypeVar cannot be both covariant and contravariant \
                                                      # E: "int" not callable

class Yes: ...
[builtins fixtures/bool.pyi]

[case testNewAnalyzerDisallowAnyGenericsMessages]
# mypy: disallow-any-generics
from a import B
x: B

[file a.py]
from typing import TypeVar, List

T = TypeVar('T')

A = List[T]
B = A

[builtins fixtures/list.pyi]

[case testNewAnalyzerVarTypeVarNoCrash]
from typing import Callable, TypeVar

FooT = TypeVar('FooT', bound='Foo')
class Foo: ...

f = lambda x: True  # type: Callable[[FooT], bool]
reveal_type(f)  # N: Revealed type is "def [FooT <: __main__.Foo] (FooT`-1) -> builtins.bool"
[builtins fixtures/bool.pyi]

[case testNewAnalyzerVarTypeVarNoCrashImportCycle]
import a

[file a.py]
from b import B
from typing import TypeVar

FooT = TypeVar('FooT', bound='Foo')
class Foo: ...

[file b.py]
from a import FooT
from typing import Callable

f = lambda x: True  # type: Callable[[FooT], bool]
reveal_type(f)  # N: Revealed type is "def [FooT <: a.Foo] (FooT`-1) -> builtins.bool"

class B: ...
[builtins fixtures/bool.pyi]

[case testNewAnalyzerFuncTypeVarNoCrashImportCycle]
import a

[file a.py]
from b import B
from typing import TypeVar

FooT = TypeVar('FooT', bound='Foo')
class Foo: ...

[file b.py]
from a import FooT
from typing import Callable

def f(x: FooT) -> bool: ...
reveal_type(f)  # N: Revealed type is "def [FooT <: a.Foo] (x: FooT`-1) -> builtins.bool"

class B: ...
[builtins fixtures/bool.pyi]

[case testNewAnalyzerNoCrashOnStarInference]
from typing import Tuple

def f() -> None:
    t: Tuple[str, Tuple[str, str, str]]
    x, (y, *z) = t
    reveal_type(z)  # N: Revealed type is "builtins.list[builtins.str]"
[builtins fixtures/list.pyi]

[case testNewAnalyzerIdentityAssignment1]
from foo import *

try:
    X = X
except:
    class X: # E: Name "X" already defined (possibly by an import)
        pass

reveal_type(X()) # N: Revealed type is "foo.X"

[file foo.py]
class X: pass

[case testNewAnalyzerIdentityAssignment2]
try:
    int = int
    reveal_type(int()) # N: Revealed type is "builtins.int"
except:
    class int: # E: Name "int" already defined (possibly by an import)
        pass

reveal_type(int()) # N: Revealed type is "builtins.int"

[case testNewAnalyzerIdentityAssignment3]
forwardref: C

try:
    int = int
    reveal_type(int()) # N: Revealed type is "builtins.int"
except:
    class int: # E: Name "int" already defined (possibly by an import)
        pass

reveal_type(int()) # N: Revealed type is "builtins.int"

class C: pass

[case testNewAnalyzerIdentityAssignment4]
try:
    C = C
    C
except:
    class C:
        pass

reveal_type(C()) # N: Revealed type is "__main__.C"

[case testNewAnalyzerIdentityAssignment5]
forwardref: D

try:
    C = C
    C
except:
    class C:
        pass

class D: pass

reveal_type(C()) # N: Revealed type is "__main__.C"

[case testNewAnalyzerIdentityAssignment6]
x: C
class C:
    pass
C = C

reveal_type(C()) # N: Revealed type is "__main__.C"
reveal_type(x) # N: Revealed type is "__main__.C"

[case testNewAnalyzerIdentityAssignment7]
C = C # E: Name "C" is not defined

reveal_type(C) # E: Name "C" is not defined \
               # N: Revealed type is "Any"

[case testNewAnalyzerIdentityAssignment8]
from typing import Final
x: Final = 0
x = x # E: Cannot assign to final name "x"

[case testNewAnalyzerClassPropertiesInAllScopes]
from abc import abstractmethod, ABCMeta

class TopLevel(metaclass=ABCMeta):
    @abstractmethod
    def f(self) -> None: pass

TopLevel()  # E: Cannot instantiate abstract class "TopLevel" with abstract attribute "f"

def func() -> None:
    class Function(metaclass=ABCMeta):
        @abstractmethod
        def f(self) -> None: pass

    Function()  # E: Cannot instantiate abstract class "Function" with abstract attribute "f"

class C:
    def meth(self) -> None:
        class Method(metaclass=ABCMeta):
            @abstractmethod
            def f(self) -> None: pass

        Method()  # E: Cannot instantiate abstract class "Method" with abstract attribute "f"

[case testModulesAndFuncsTargetsInCycle]
import a
[file a.py]
import b
defer: Yes
def func() -> int: ...
class Yes: ...
[file b.py]
import a

def func() -> int: ...
[targets b, a, a, b.func, a.func, __main__]

[case testNewAnalyzerForwardReferenceInFunction]
def f(x: 'A') -> 'A':
    return A()

class A:
    pass
[targets __main__, __main__.f]

[case testNewAnalyzerSimpleImportStarNoDeferral]
from m import *

x: A
f()

[file m.py]
class A: pass
def f() -> None: pass

[targets m, m.f, __main__]

[case testNewAnalyzerNoCrashOnCustomProperty]
# flags: --ignore-missing-imports
from unimported import custom

class User:
    first_name: str

    @custom
    def name(self) -> str:
        return self.first_name

    @name.setter  # type: ignore
    def name(self, value: str) -> None:
        self.first_name = value

    def __init__(self, name: str) -> None:
        self.name = name  # E: Cannot assign to a method

[case testNewAnalyzerMemberNameMatchesTypedDict]
from typing import Union, Any
from typing_extensions import TypedDict

class T(TypedDict):
    b: b.T

class b:
    T: Union[Any]
[builtins fixtures/tuple.pyi]

[case testNewAnalyzerMemberNameMatchesNamedTuple]
from typing import Union, Any, NamedTuple

class T(NamedTuple):
    b: b.T

class b:
    T = Union[Any]

[builtins fixtures/tuple.pyi]

[case testSelfReferentialSubscriptExpression]
x = x[1]  # E: Cannot resolve name "x" (possible cyclic definition)
y = 1[y]  # E: Value of type "int" is not indexable \
          # E: Cannot determine type of "y"