Fixed #35354 -- Simplified ASGIRequest path handling.

Following the ASGI HTTP Connection Scope docs[0], the provided `path`
is already the correct value that Django requires.

In combination with `root_path`, from which `script_name` is derived,
the `path_info` variable is set. It's then redundant to
re-calculate `path` from `script_name` and `path_info`.

See also, a clarifying discussion on the ASGIref repo[1].

[0]: https://asgi.readthedocs.io/en/latest/specs/www.html#http-connection-scope
[1]: django/asgiref#424

django/core/handlers/asgi.py

@@ -50,21 +50,13 @@ def __init__(self, scope, body_file):
         self._post_parse_error = False
         self._read_started = False
         self.resolver_match = None
+        self.path = scope["path"]
         self.script_name = get_script_prefix(scope)
         if self.script_name:
             # TODO: Better is-prefix checking, slash handling?
             self.path_info = scope["path"].removeprefix(self.script_name)
         else:
             self.path_info = scope["path"]
-        # The Django path is different from ASGI scope path args, it should
-        # combine with script name.
-        if self.script_name:
-            self.path = "%s/%s" % (
-                self.script_name.rstrip("/"),
-                self.path_info.replace("/", "", 1),
-            )
-        else:
-            self.path = scope["path"]
         # HTTP basics.
         self.method = self.scope["method"].upper()
         # Ensure query string is encoded correctly.

tests/handlers/tests.py

@@ -335,11 +335,13 @@ def test_root_path(self):
         self.assertEqual(request.script_name, "/root")
         self.assertEqual(request.path_info, "/somepath/")
 
-    @override_settings(FORCE_SCRIPT_NAME="/FORCED_PREFIX/")
+    @override_settings(FORCE_SCRIPT_NAME="/FORCED_PREFIX")
     def test_force_script_name(self):
         async_request_factory = AsyncRequestFactory()
-        request = async_request_factory.request(**{"path": "/somepath/"})
+        request = async_request_factory.request(**{"path": "/FORCED_PREFIX/somepath/"})
         self.assertEqual(request.path, "/FORCED_PREFIX/somepath/")
+        self.assertEqual(request.script_name, "/FORCED_PREFIX")
+        self.assertEqual(request.path_info, "/somepath/")
 
     async def test_sync_streaming(self):
         response = await self.async_client.get("/streaming/")