test: use HTTPStatus.UNPROCESSABLE_ENTITY instead of starlette's status

tests/test_annotated_body_depends_merge_body.py

@@ -1,3 +1,4 @@
+from http import HTTPStatus
 from typing import Annotated, Any
 
 import pytest
@@ -83,7 +84,8 @@ class TestAnnotatedBodyDependsMergeBody:
         assert r.json() == {"extra": "x"}
 
         bad = client.post("/c", json={"kind": "foo"})
-        assert bad.status_code == status.HTTP_422_UNPROCESSABLE_CONTENT
+        # not status.*: Starlette confused HTTP_422_UNPROCESSABLE_CONTENT HTTP_422_UNPROCESSABLE_ENTITY
+        assert bad.status_code == HTTPStatus.UNPROCESSABLE_ENTITY
 
     def test_merge_depends_empty_falls_back_to_declared_model(self) -> None:
         app = FastAPI()

tests/test_annotated_body_depends_merge_file.py

@@ -1,3 +1,4 @@
+from http import HTTPStatus
 from io import BytesIO
 from typing import Annotated, Any
 
@@ -81,7 +82,8 @@ class TestAnnotatedBodyDependsMergeFile:
             data={"kind": "foo"},
             files={"blob": ("up.txt", BytesIO(b"x"), "text/plain")},
         )
-        assert bad.status_code == status.HTTP_422_UNPROCESSABLE_CONTENT
+        # not status.*: Starlette confused HTTP_422_UNPROCESSABLE_CONTENT HTTP_422_UNPROCESSABLE_ENTITY
+        assert bad.status_code == HTTPStatus.UNPROCESSABLE_ENTITY
 
     def test_rejects_file_and_form_together(self) -> None:
         app = FastAPI()

tests/test_annotated_body_depends_merge_form.py

@@ -1,3 +1,4 @@
+from http import HTTPStatus
 from typing import Annotated, Any
 
 import pytest
@@ -61,4 +62,5 @@ class TestAnnotatedBodyDependsMergeForm:
         assert r.json() == {"extra": "z"}
 
         bad = client.post("/form-c", data={"kind": "foo"})
-        assert bad.status_code == status.HTTP_422_UNPROCESSABLE_CONTENT
+        # not status.*: Starlette confused HTTP_422_UNPROCESSABLE_CONTENT HTTP_422_UNPROCESSABLE_ENTITY
+        assert bad.status_code == HTTPStatus.UNPROCESSABLE_ENTITY