update typing tests for json

src/flask/typing.py

@@ -7,7 +7,13 @@ if t.TYPE_CHECKING:  # pragma: no cover
 
 # The possible types that are directly convertible or are a Response object.
 ResponseValue = t.Union[
-    "Response", str, bytes, list, t.Dict[str, t.Any], t.Iterator[str], t.Iterator[bytes]
+    "Response",
+    str,
+    bytes,
+    t.List[t.Any],
+    t.Dict[str, t.Any],
+    t.Iterator[str],
+    t.Iterator[bytes],
 ]
 
 # the possible types for an individual HTTP header

tests/typing/typing_route.py

@@ -25,7 +25,17 @@ def hello_bytes() -> bytes:
 
 @app.route("/json")
 def hello_json() -> Response:
-    return jsonify({"response": "Hello, World!"})
+    return jsonify("Hello, World!")
+
+
+@app.route("/json/dict")
+def hello_json_dict() -> t.Dict[str, t.Any]:
+    return {"response": "Hello, World!"}
+
+
+@app.route("/json/dict")
+def hello_json_list() -> t.List[t.Any]:
+    return [{"message": "Hello"}, {"message": "World"}]
 
 
 @app.route("/generator")