Recover after #909 (#925)

* Fix stubs related to `(Async)RequestFactory` and `(Async)Client`

* Revert incorrect removal.

* Allow set as `unique_together`, use shared type alias.

* Revert `Q.__init__` to use only `*args, **kwargs` to remove false-positive with `Q(**{...})`

* Add abstract methods to `HttpResponseBase` to create common interface.

* Remove monkey-patched attributes from `HttpResponseBase` subclasses.

* Add QueryDict mutability checks (+ plugin support)

* Fix lint

* Return back GenericForeignKey to `Options.get_fields`

* Minor fixup

* Make plugin code typecheck with `--warn-unreachable`, minor performance increase.

* Better types for `{unique, index}_together` and Options.

* Fix odd type of `URLResolver.urlconf_name` which isn't a str actually.

* Better types for field migration operations.

* Revert form.files to `MultiValueDict[str, UploadedFile]`

* Compatibility fix (#916)

* Do not assume that `Annotated` is always related to django-stubs (fixes #893)

* Restrict `FormView.get_form` return type to `_FormT` (class type argument). Now it is resolved to `form_class` argument if present, but also errors if it is not subclass of _FormT

* Fix CI (make test runnable on 3.8)

* Fix CI (make test runnable on 3.8 _again_)

tests/typecheck/test/test_client.yml

@@ -0,0 +1,33 @@
+-   case: client_methods
+    main: |
+      from django.test.client import Client
+      client = Client()
+      response = client.get('foo')
+      reveal_type(response.wsgi_request)  # N: Revealed type is "django.core.handlers.wsgi.WSGIRequest"
+      reveal_type(response.request)  # N: Revealed type is "builtins.dict[builtins.str, Any]"
+      reveal_type(response.templates)  # N: Revealed type is "builtins.list[django.template.base.Template]"
+      reveal_type(response.client)  # N: Revealed type is "django.test.client.Client"
+      reveal_type(response.context)  # N: Revealed type is "builtins.list[builtins.dict[builtins.str, Any]]"
+      response.json()
+-   case: async_client_methods
+    main: |
+      from django.test.client import AsyncClient
+      async def main():
+        client = AsyncClient()
+        response = await client.get('foo')
+        reveal_type(response.asgi_request)  # N: Revealed type is "django.core.handlers.asgi.ASGIRequest"
+        reveal_type(response.request)  # N: Revealed type is "builtins.dict[builtins.str, Any]"
+        reveal_type(response.templates)  # N: Revealed type is "builtins.list[django.template.base.Template]"
+        reveal_type(response.client)  # N: Revealed type is "django.test.client.AsyncClient"
+        reveal_type(response.context)  # N: Revealed type is "builtins.list[builtins.dict[builtins.str, Any]]"
+        response.json()
+-   case: request_factories
+    main: |
+      from django.test.client import RequestFactory, AsyncRequestFactory
+      factory = RequestFactory()
+      request = factory.get('foo')
+      reveal_type(request)  # N: Revealed type is "django.core.handlers.wsgi.WSGIRequest*"
+
+      async_factory = AsyncRequestFactory()
+      async_request = async_factory.get('foo')
+      reveal_type(async_request)  # N: Revealed type is "django.core.handlers.asgi.ASGIRequest*"

tests/typecheck/test/test_testcase.yml

@@ -9,4 +9,4 @@
               reveal_type(resp.status_code)   # N: Revealed type is "builtins.int"
               # Attributes monkey-patched by test Client class:
               resp.json()
-              reveal_type(resp.wsgi_request)  # N: Revealed type is "django.core.handlers.wsgi.WSGIRequest*"
+              reveal_type(resp.wsgi_request)  # N: Revealed type is "django.core.handlers.wsgi.WSGIRequest"