infra: xfail pydantic v2 arg to py function (#25686)

Issue to track: #25687

libs/core/tests/unit_tests/utils/test_function_calling.py

@@ -296,6 +296,21 @@ def test_convert_to_openai_function(
     assert actual == runnable_expected
 
 
+@pytest.mark.xfail(reason="Direct pydantic v2 models not yet supported")
+def test_convert_to_openai_function_nested_v2() -> None:
+    class NestedV2(BaseModelV2Maybe):
+        nested_v2_arg1: int = FieldV2Maybe(..., description="foo")
+        nested_v2_arg2: Literal["bar", "baz"] = FieldV2Maybe(
+            ..., description="one of 'bar', 'baz'"
+        )
+
+    def my_function(arg1: NestedV2) -> None:
+        """dummy function"""
+        pass
+
+    convert_to_openai_function(my_function)
+
+
 def test_convert_to_openai_function_nested() -> None:
     class Nested(BaseModel):
         nested_arg1: int = Field(..., description="foo")
@@ -303,13 +318,7 @@ def test_convert_to_openai_function_nested() -> None:
             ..., description="one of 'bar', 'baz'"
         )
 
-    class NestedV2(BaseModelV2Maybe):
+    def my_function(arg1: Nested) -> None:
-        nested_v2_arg1: int = FieldV2Maybe(..., description="foo")
-        nested_v2_arg2: Literal["bar", "baz"] = FieldV2Maybe(
-            ..., description="one of 'bar', 'baz'"
-        )
-
-    def my_function(arg1: Nested, arg2: NestedV2) -> None:
         """dummy function"""
         pass
 
@@ -331,20 +340,10 @@ def test_convert_to_openai_function_nested() -> None:
                     },
                     "required": ["nested_arg1", "nested_arg2"],
                 },
-                    "arg2": {
-                        "type": "object",
-                        "properties": {
-                            "nested_v2_arg1": {"type": "integer", "description": "foo"},
-                            "nested_v2_arg2": {
-                                "type": "string",
-                                "enum": ["bar", "baz"],
-                                "description": "one of 'bar', 'baz'",
             },
-                        },
+            "required": [
-                        "required": ["nested_v2_arg1", "nested_v2_arg2"],
+                "arg1",
-                    },
+            ],
-                },
-                "required": ["arg1", "arg2"],
         },
     }