[case testLambdaInheritsCheckedContextFromFunc]
def g():
    return lambda x: UNDEFINED in x
[out]
MypyFile:1(
  FuncDef:1(
    g
    Block:2(
      ReturnStmt:2(
        LambdaExpr:2(
          Args(
            Var(x))
          Block:2(
            ReturnStmt:2(
              ComparisonExpr:2(
                in
                NameExpr(UNDEFINED)
                NameExpr(x [l])))))))))

[case testLambdaInheritsCheckedContextFromFuncForced]
# flags: --check-untyped-defs
def g():
    return lambda x: UNDEFINED in x  # E: Name "UNDEFINED" is not defined

[case testLambdaInheritsCheckedContextFromTypedFunc]
def g() -> None:
    return lambda x: UNDEFINED in x  # E: Name "UNDEFINED" is not defined

[case testLambdaInheritsCheckedContextFromTypedFuncForced]
# flags: --check-untyped-defs
def g() -> None:
    return lambda x: UNDEFINED in x  # E: Name "UNDEFINED" is not defined

[case testLambdaInheritsCheckedContextFromModule]
g = lambda x: UNDEFINED in x  # E: Name "UNDEFINED" is not defined

[case testLambdaInheritsCheckedContextFromModuleForce]
# flags: --check-untyped-defs
g = lambda x: UNDEFINED in x  # E: Name "UNDEFINED" is not defined

[case testLambdaInheritsCheckedContextFromModuleLambdaStack]
g = lambda: lambda: lambda x: UNDEFINED in x  # E: Name "UNDEFINED" is not defined

[case testLambdaInheritsCheckedContextFromModuleLambdaStackForce]
# flags: --check-untyped-defs
g = lambda: lambda: lambda x: UNDEFINED in x  # E: Name "UNDEFINED" is not defined

[case testLambdaInheritsCheckedContextFromFuncLambdaStack]
def g():
    return lambda: lambda: lambda x: UNDEFINED in x
[out]
MypyFile:1(
  FuncDef:1(
    g
    Block:2(
      ReturnStmt:2(
        LambdaExpr:2(
          Block:2(
            ReturnStmt:2(
              LambdaExpr:2(
                Block:2(
                  ReturnStmt:2(
                    LambdaExpr:2(
                      Args(
                        Var(x))
                      Block:2(
                        ReturnStmt:2(
                          ComparisonExpr:2(
                            in
                            NameExpr(UNDEFINED)
                            NameExpr(x [l])))))))))))))))

[case testLambdaInheritsCheckedContextFromFuncLambdaStackForce]
# flags: --check-untyped-defs
def g():
    return lambda: lambda: lambda x: UNDEFINED in x  # E: Name "UNDEFINED" is not defined

[case testLambdaInheritsCheckedContextFromTypedFuncLambdaStack]
def g() -> None:
    return lambda: lambda: lambda x: UNDEFINED in x  # E: Name "UNDEFINED" is not defined

[case testLambdaInheritsCheckedContextFromTypedFuncLambdaStackForce]
# flags: --check-untyped-defs
def g() -> None:
    return lambda: lambda: lambda x: UNDEFINED in x  # E: Name "UNDEFINED" is not defined

[case testLambdaInheritsCheckedContextFromClassLambdaStack]
class A:
    g = lambda: lambda: lambda x: UNDEFINED in x  # E: Name "UNDEFINED" is not defined

[case testLambdaInheritsCheckedContextFromClassLambdaStackForce]
# flags: --check-untyped-defs
class A:
    g = lambda: lambda: lambda x: UNDEFINED in x  # E: Name "UNDEFINED" is not defined