third iteration of stubs

django-stubs/dispatch/dispatcher.pyi

@@ -2,9 +2,12 @@ from typing import Any, Callable, List, Optional, Tuple, Type, Union
 
 from django.apps.config import AppConfig
 from django.conf import Settings, UserSettingsHolder
+from django.core.handlers.wsgi import WSGIHandler
 from django.db.backends.sqlite3.base import DatabaseWrapper
 from django.db.models.base import Model
 from django.template.base import Template
+from django.test.client import ClientHandler
+from django.test.testcases import SimpleTestCase
 
 NONE_ID: Any
 NO_RECEIVERS: Any
@@ -20,31 +23,51 @@ class Signal:
     ) -> None: ...
     def connect(
         self,
-        receiver: Callable,
-        sender: Optional[Union[Type[Model], AppConfig]] = ...,
+        receiver: Any,
+        sender: Optional[
+            Union[Type[Union[Any, Model]], AppConfig, SimpleTestCase]
+        ] = ...,
         weak: bool = ...,
         dispatch_uid: Optional[str] = ...,
     ) -> None: ...
     def disconnect(
         self,
         receiver: Optional[Callable] = ...,
-        sender: None = ...,
+        sender: Optional[
+            Union[Type[Union[Any, Model]], AppConfig, SimpleTestCase]
+        ] = ...,
         dispatch_uid: Optional[str] = ...,
     ) -> bool: ...
-    def has_listeners(self, sender: Type[Model] = ...) -> bool: ...
+    def has_listeners(self, sender: Any = ...) -> bool: ...
     def send(
         self,
         sender: Optional[
             Union[
                 Type[
-                    Union[Model, UserSettingsHolder, DatabaseWrapper, Settings]
+                    Optional[
+                        Union[
+                            Settings,
+                            UserSettingsHolder,
+                            WSGIHandler,
+                            DatabaseWrapper,
+                            Model,
+                            ClientHandler,
+                            SimpleTestCase,
+                        ]
+                    ]
                 ],
                 AppConfig,
                 Template,
+                SimpleTestCase,
+                str,
             ]
         ],
         **named: Any
-    ) -> List[Tuple[Callable, None]]: ...
-    def send_robust(self, sender: Any, **named: Any): ...
+    ) -> List[Tuple[Optional[str], Optional[str]]]: ...
+    def send_robust(
+        self, sender: SimpleTestCase, **named: Any
+    ) -> List[Tuple[Callable, Union[ValueError, str]]]: ...
 
-def receiver(signal: Signal, **kwargs: Any) -> Callable: ...
+def receiver(
+    signal: Union[List[Signal], Signal], **kwargs: Any
+) -> Callable: ...