From 16e7a5cb8a1e02fce3f5ec1dbf55263f569b3612 Mon Sep 17 00:00:00 2001
From: Alex Couper <acouper@syndis.is>
Date: Thu, 23 May 2024 23:47:40 +0000
Subject: [PATCH] Only use feature if it's available

---
 fastapi/_compat.py                     | 6 +++++-
 tests/test_serialize_response_model.py | 5 ++++-
 tests/utils.py                         | 2 +-
 3 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/fastapi/_compat.py b/fastapi/_compat.py
index 714c9c4d2..90cec70b5 100644
--- a/fastapi/_compat.py
+++ b/fastapi/_compat.py
@@ -147,6 +147,10 @@ if PYDANTIC_V2:
         ) -> Any:
             # What calls this code passes a value that already called
             # self._type_adapter.validate_python(value)
+            #
+            # context argument was introduced in pydantic 2.7.3
+            kwargs = {"context": context} if PYDANTIC_VERSION > "2.7.2" else {}
+
             return self._type_adapter.dump_python(
                 value,
                 mode=mode,
@@ -156,7 +160,7 @@ if PYDANTIC_V2:
                 exclude_unset=exclude_unset,
                 exclude_defaults=exclude_defaults,
                 exclude_none=exclude_none,
-                context=context,
+                **kwargs,
             )
 
         def __hash__(self) -> int:
diff --git a/tests/test_serialize_response_model.py b/tests/test_serialize_response_model.py
index 612d41fc1..754e1a382 100644
--- a/tests/test_serialize_response_model.py
+++ b/tests/test_serialize_response_model.py
@@ -1,7 +1,9 @@
 from typing import Dict, List, Optional
 
+import pytest
 from fastapi import FastAPI
-from pydantic import BaseModel, Field
+from fastapi._compat import PYDANTIC_VERSION
+from pydantic import BaseModel, Field, SerializationInfo, model_serializer
 from starlette.testclient import TestClient
 
 app = FastAPI()
@@ -176,6 +178,7 @@ def test_validdict_exclude_unset():
     }
 
 
+@pytest.mark.skipif(PYDANTIC_VERSION < "2.7.2", reason="requires Pydantic 2.7.3+")
 def test_validdict_with_context():
     response = client.get("/items/validdict-with-context")
     response.raise_for_status()
diff --git a/tests/utils.py b/tests/utils.py
index 460c028f7..3f9459b20 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -8,4 +8,4 @@ needs_py310 = pytest.mark.skipif(
     sys.version_info < (3, 10), reason="requires python3.10+"
 )
 needs_pydanticv2 = pytest.mark.skipif(not PYDANTIC_V2, reason="requires Pydantic v2")
-needs_pydanticv1 = pytest.mark.skipif(PYDANTIC_V2, reason="requires Pydantic v1")
+needs_pydanticv1 = pytest.mark.skipif(PYDANTIC_V2, reason="requires Pydantic v1")
\ No newline at end of file