test(swap): 添加部分平仓利息计算测试用例

- 添加算尾部分平仓当日新计利息包含已平仓部分的测试
- 添加不算尾部分平仓当日新计利息只包含剩余持仓部分的测试
- 验证部分平仓待实现收益计算的正确性

YLErpDAL/Modules/SwapModule/SwapEodPositionService.cs

@@ -1343,7 +1343,8 @@ namespace YLErp.Modules.SwapModule
             positions.Add(position);
             List<eod_swap_position> preEodPositions = new List<eod_swap_position>();
             preEodPositions.Add(eodPayPosition);
-            var interests = CalcSwapInterests(td, td.trade_extend, valueDate, valueDate, preEodPositions, positions, posiNotionalValue, posiLongNotional, posiShortNational, closeNational, 1, eventType, false, true, grossPrice, orginPv, true, settment: false, newCalcLast: true);
+            var calcLast = tradeExtend?.InterestCalcMode?.EndsWith("1") ?? true;
+            var interests = CalcSwapInterests(td, td.trade_extend, valueDate, valueDate, preEodPositions, positions, posiNotionalValue, posiLongNotional, posiShortNational, closeNational, 1, eventType, false, true, grossPrice, orginPv, true, settment: false, newCalcLast: autoSwap || calcLast);
             decimal TdInterestAmount = interests.Sum(x => x.TdInterestAmount);
             decimal interestAmountBeforeSettlement = interests.Sum(x => x.InterestAmount);
             decimal manualSettledInterestAmount = flowEvents.Sum(x => x.InterestAmount);
@@ -1399,7 +1400,9 @@ namespace YLErp.Modules.SwapModule
             {
                 intersetAcmount /= tradeExtend.AnnualDays;
             }
-            newEodPayPosition.TdInterestIncome = intersetAcmount;
+            newEodPayPosition.TdInterestIncome = !autoSwap && calcLast
+                ? TdInterestAmount - lastInterestIncomeSum
+                : intersetAcmount;
             Log.Info($"InterestIncomeSum is {lastInterestIncomeSum},TdInterestIncome is {newEodPayPosition.TdInterestIncome}" +
                      $",TdCloseInterest is {newEodPayPosition.TdCloseInterest}");
             Log.Info($"InterestFeeSum is {eodPayPosition.InterestFeeSum},TdInterestFee is {newEodPayPosition.TdInterestFee}" +