Add integration test for max length

Author: samdoran

tests/integration/endpoints/test_rlsapi_v1_integration.py

@@ -13,6 +13,7 @@
 
 import pytest
 from fastapi import HTTPException, status
+from fastapi.testclient import TestClient
 from llama_stack_client import APIConnectionError
 from pytest_mock import MockerFixture
 
@@ -494,3 +495,22 @@ async def test_rlsapi_v1_infer_skip_rag(
         auth=test_auth,
     )
     assert isinstance(response, RlsapiV1InferResponse)
+
+
+@pytest.mark.parametrize(
+    "json",
+    (
+        ({"question": "?" * 10_241}),
+        ({"question": "Q", "context": {"stdin": "a" * 65_537}}),
+        ({"question": "Q", "context": {"attachments": {"contents": "A" * 65_537}}}),
+        ({"question": "Q", "context": {"terminal": {"output": "T" * 65_537}}}),
+    ),
+    ids=["question", "stdin", "attachment_contents", "terminal_output"],
+)
+def test_infer_size_limit(integration_http_client: TestClient, json) -> None:
+    """Test that a field exceeding limit is rejected."""
+    response = integration_http_client.post("/v1/infer", json=json)
+    detail = response.json()["detail"]
+
+    assert response.status_code == status.HTTP_422_UNPROCESSABLE_CONTENT
+    assert "string_too_long" in {item["type"] for item in detail}