Also test annotated param

tests/test_openapi_form_alias.py

@@ -1,28 +1,46 @@
+from typing import Annotated
+
+import pytest
+
 from fastapi import FastAPI, Form
 from fastapi.testclient import TestClient
 
 app = FastAPI()
 
 
-@app.post("/")
+@app.post("/old-style", operation_id="old_style")
 def route_with_form(form_param: str = Form(alias="aliased-field")):
     return {}
 
 
+@app.post("/annotated", operation_id="annotated")
+def route_with_form_annotated(form_param: Annotated[str, Form(alias="aliased-field")]):
+    return {}
+
+
 client = TestClient(app)
 
 
-def test_get_route():
-    response = client.post("/", data={"aliased-field": "Hello, World!"})
+@pytest.mark.parametrize(
+    "path",
+    ["/old-style", "/annotated"]
+)
+def test_get_route(path: str):
+    response = client.post(path, data={"aliased-field": "Hello, World!"})
     assert response.status_code == 200, response.text
     assert response.json() == {}
 
 
-def test_openapi():
+@pytest.mark.parametrize(
+    "schema_obj",
+    ["Body_annotated", "Body_old_style"]
+)
+def test_form_alias_is_correct(schema_obj: str):
     response = client.get("/openapi.json")
     assert response.status_code == 200, response.text
+    print(response.json()["components"]["schemas"])
     form_properties = (
         response.json()
-        ["components"]["schemas"]["Body_route_with_form__post"]["properties"]
+        ["components"]["schemas"][schema_obj]["properties"]
     )
     assert "aliased-field" in form_properties