dhkim1920 commented on code in PR #73783:
URL: https://github.com/apache/airflow/pull/73783#discussion_r4538244058


##########
airflow-core/tests/unit/api_fastapi/execution_api/versions/head/test_task_instances.py:
##########
@@ -742,6 +744,46 @@ def 
test_startup_xcom_cleanup_keys_belong_to_the_starting_try(
         assert response.status_code == 200
         assert response.json()["xcom_keys_to_clear"] == ["own"]
 
+    @pytest.mark.parametrize(
+        "conf_value",
+        [
+            pytest.param(-(2**63), id="min-int64"),
+            pytest.param(2**64 - 1, id="max-uint64"),
+            pytest.param(
+                -(2**63) - 1,
+                id="below-int64",
+                marks=pytest.mark.backend("postgres", "sqlite"),
+            ),
+            pytest.param(
+                2**64,
+                id="above-uint64",
+                marks=pytest.mark.backend("postgres", "sqlite"),
+            ),
+            pytest.param(str(2**64), id="large-number-string"),
+        ],
+    )
+    def test_run_conf_can_be_sent_to_task_runner(self, client, session, 
create_task_instance, conf_value):
+        ti = create_task_instance(task_id="large_integer_conf", 
state=State.QUEUED)
+        ti.dag_run.conf = {"large_integer": conf_value}
+        session.commit()
+        session.expire_all()
+        assert ti.dag_run.conf == {"large_integer": conf_value}
+
+        response = client.patch(
+            f"/execution/task-instances/{ti.id}/run",
+            json={
+                "state": "running",
+                "hostname": "test-worker",
+                "unixname": "airflow",
+                "pid": 100,
+                "start_date": "2024-10-31T12:00:00Z",
+            },
+        )
+        assert response.status_code == 200, response.text
+        context = TIRunContext.model_validate_json(response.content)
+        assert context.dag_run.conf == {"large_integer": conf_value}
+        _ResponseFrame(id=0, body={"ti_context": 
context.model_dump()}).as_bytes()

Review Comment:
   That last call was intended to verify that the actual API response could be 
serialized without raising OverflowError. However, it mixed SDK serialization 
checks into the API test, so I removed the call and its import. The API test 
checks persistence and response values, while SDK tests cover serialization and 
task startup.



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