add more test folders

django-stubs/db/models/expressions.pyi

@@ -168,12 +168,12 @@ class RawSQL(Expression):
     def __init__(self, sql: str, params: Sequence[Any], output_field: Optional[_OutputField] = ...) -> None: ...
 
 class Func(SQLiteNumericMixin, Expression):
-    function: Any = ...
+    function: str = ...
     template: str = ...
     arg_joiner: str = ...
-    arity: Any = ...
+    arity: int = ...
     source_expressions: List[Expression] = ...
-    extra: Any = ...
+    extra: Dict[Any, Any] = ...
     def __init__(self, *expressions: Any, output_field: Optional[_OutputField] = ..., **extra: Any) -> None: ...
     def get_source_expressions(self) -> List[Combinable]: ...
     def set_source_expressions(self, exprs: List[Expression]) -> None: ...

django-stubs/db/models/fields/__init__.pyi

@@ -207,6 +207,7 @@ class GenericIPAddressField(Field):
         validators: Iterable[_ValidatorCallable] = ...,
         error_messages: Optional[_ErrorMessagesToOverride] = ...,
     ) -> None: ...
+    def __set__(self, instance, value: Union[str, int, Callable[..., Any], Combinable]): ...
     def __get__(self, instance, owner) -> str: ...
 
 class DateTimeCheckMixin: ...
@@ -269,7 +270,7 @@ class DateTimeField(DateField):
     def __get__(self, instance, owner) -> datetime: ...
 
 class UUIDField(Field):
-    def __set__(self, instance, value: Any) -> None: ...
+    def __set__(self, instance, value: Union[str, uuid.UUID]) -> None: ...
     def __get__(self, instance, owner) -> uuid.UUID: ...
 
 class FilePathField(Field):

django-stubs/db/models/functions/window.pyi

@@ -9,22 +9,19 @@ class CumeDist(Func):
     window_compatible: bool = ...
 
 class DenseRank(Func):
-    extra: Dict[Any, Any]
-    source_expressions: List[Any]
-    function: str = ...
     name: str = ...
     output_field: Any = ...
     window_compatible: bool = ...
 
 class FirstValue(Func):
-    arity: int = ...
-    function: str = ...
     name: str = ...
     window_compatible: bool = ...
 
 class LagLeadFunction(Func):
     window_compatible: bool = ...
-    def __init__(self, expression: Optional[str], offset: int = ..., default: None = ..., **extra: Any) -> Any: ...
+    def __init__(
+        self, expression: Optional[str], offset: int = ..., default: Optional[int] = ..., **extra: Any
+    ) -> None: ...
 
 class Lag(LagLeadFunction):
     function: str = ...