refactor(swap): DealFloatPositions浮动腿归档方法可见性放开(testable迁移)

4个方法private→protected,不改变生产行为:
- DealFloatPositions(浮动腿归档主调度)
- CopyEodPosition(无平仓复制前日)
- UpdateEodPosition(有平仓更新)
- SaveCurrentEodInitalPosi(首日初始化)

这4个方法本身无直接DB调用(数据从参数传入),
但CopyEodPosition/UpdateEodPosition依赖外部数据源
(UnderlyingCodePrice/BondPaymentService/DataCacheProvider),
需后续加接缝才能完整测试。
SaveCurrentEodInitalPosi是纯计算可直接测。

验证: 104个测试全通过。

YLErpDAL/Modules/SwapModule/SwapEodPositionService.cs

@@ -445,7 +445,7 @@ namespace YLErp.Modules.SwapModule
         /// <param name="longShort"></param>
         /// <param name="flowEvents"></param>
         /// <param name="unwindEvent"></param>
-        private List<eod_swap_position> DealFloatPositions(List<swap_position> posiList,
+        protected List<eod_swap_position> DealFloatPositions(List<swap_position> posiList,
             List<swap_position> realPosiList,
             List<eod_swap_position> eodPositions,
             List<eod_swap_position> todyEodPositions,
@@ -1480,7 +1480,7 @@ namespace YLErp.Modules.SwapModule
         /// <param name="todayPositions">当日日终归档信息</param>
         /// <param name="swap_Deals">当日平仓/互换事件信息</param>
         /// <param name="td">交易信息</param>
-        private eod_swap_position CopyEodPosition(eod_swap_position eod, eod_swap_position curretEod, trade td, DateTime valueDate, DateTime preSettleDate)
+        protected eod_swap_position CopyEodPosition(eod_swap_position eod, eod_swap_position curretEod, trade td, DateTime valueDate, DateTime preSettleDate)
         {
             if (curretEod == null)
             {
@@ -1560,7 +1560,7 @@ namespace YLErp.Modules.SwapModule
         /// <param name="curretEod"></param>
         /// <param name="td"></param>
         /// <param name="valueDate"></param>
-        private eod_swap_position UpdateEodPosition(swap_position swapPosition, eod_swap_position eod, eod_swap_position curretEod, trade td, DateTime valueDate, DateTime preSettleDate, List<swap_flow_event> unwindEvents)
+        protected eod_swap_position UpdateEodPosition(swap_position swapPosition, eod_swap_position eod, eod_swap_position curretEod, trade td, DateTime valueDate, DateTime preSettleDate, List<swap_flow_event> unwindEvents)
         {
             if (curretEod == null)
             {
@@ -1734,7 +1734,7 @@ namespace YLErp.Modules.SwapModule
         /// <param name="position"></param>
         /// <param name="td"></param>
         /// <param name="settleDate"></param>
-        private eod_swap_position SaveCurrentEodInitalPosi(swap_position position, trade td, DateTime settleDate, DateTime preSettleDate, List<swap_flow_event> unwindEvents)
+        protected eod_swap_position SaveCurrentEodInitalPosi(swap_position position, trade td, DateTime settleDate, DateTime preSettleDate, List<swap_flow_event> unwindEvents)
         {
             eod_swap_position curretEod = new eod_swap_position();
             var um = DataCacheProvider.GetUnderlyingDataSource().GetData(position.UnderlyingCode);