Fix graph unit test edge direction problem

tests/test_graph_storage.py

@@ -744,16 +744,25 @@ async def test_graph_batch_operations(storage):
         print(f"节点 {node3_id} 的出边: {node3_outgoing_edges}")
         print(f"节点 {node3_id} 的入边: {node3_incoming_edges}")
 
-        # 检查是否包含从机器学习来的边，以及到自然语言处理和计算机视觉的边
-        has_edge_from_node2 = any(src == node2_id for src, _ in node3_incoming_edges)
-        has_edge_to_node4 = any(tgt == node4_id for _, tgt in node3_outgoing_edges)
-        has_edge_to_node5 = any(tgt == node5_id for _, tgt in node3_outgoing_edges)
+        # 检查是否包含与机器学习、自然语言处理和计算机视觉的连接（忽略方向）
+        has_connection_with_node2 = any(
+            (src == node2_id and tgt == node3_id) or (src == node3_id and tgt == node2_id)
+            for src, tgt in nodes_edges[node3_id]
+        )
+        has_connection_with_node4 = any(
+            (src == node3_id and tgt == node4_id) or (src == node4_id and tgt == node3_id)
+            for src, tgt in nodes_edges[node3_id]
+        )
+        has_connection_with_node5 = any(
+            (src == node3_id and tgt == node5_id) or (src == node5_id and tgt == node3_id)
+            for src, tgt in nodes_edges[node3_id]
+        )
 
         assert (
-            has_edge_from_node2
-        ), f"节点 {node3_id} 的边列表中应包含从 {node2_id} 来的边"
-        assert has_edge_to_node4, f"节点 {node3_id} 的边列表中应包含到 {node4_id} 的边"
-        assert has_edge_to_node5, f"节点 {node3_id} 的边列表中应包含到 {node5_id} 的边"
+            has_connection_with_node2
+        ), f"节点 {node3_id} 的边列表中应包含与 {node2_id} 的连接"
+        assert has_connection_with_node4, f"节点 {node3_id} 的边列表中应包含与 {node4_id} 的连接"
+        assert has_connection_with_node5, f"节点 {node3_id} 的边列表中应包含与 {node5_id} 的连接"
 
         print("无向图特性验证成功：批量获取的节点边包含所有相关的边（无论方向）")