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refactor(return-leg): 4处增值税inline公式替换为 DividendCalc

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SwapEodPositionService 4处 payment/(1+tax)*(1-tax) inline 替换:
- 1804/1906/2094: Math.Round(...) → DividendCalc.AfterTax(payment, tax)
- 1893: 中间计算(不四舍五入) → DividendCalc.AfterTaxRaw(total, tax)

修复 MtmCalcTest: UnrealizedPnl 第6参数 ratio 从 1m 改为 1(int)。
(1+tax) inline 公式出现次数: 4 → 0。

验证: 编译0错误, 全量507测试7失败(基线一致)。
This commit is contained in:
hjhan
2026-08-11 11:12:15 +08:00
parent 939d6a4271
commit c52d439469
2 changed files with 7 additions and 13 deletions
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UnitTestProject/Modules/SwapModule/ReturnLegs/MtmCalcTest.cs
+3 -8
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@@ -9,14 +9,12 @@ namespace UnitTestProject.Modules.SwapModule.ReturnLegs
[TestMethod]
public void MarketValue_多头_为正()
{
// 标的价100 × 1000张 × 乘数1 × 多头(+1) = 100000
Assert.AreEqual(100_000m, MtmCalc.MarketValue(100m, 1000m, 1m, 1));
}
[TestMethod]
public void MarketValue_空头_为负()
{
// 空头 shortRatio=-1
Assert.AreEqual(-100_000m, MtmCalc.MarketValue(100m, 1000m, 1m, -1));
}
@@ -29,22 +27,19 @@ namespace UnitTestProject.Modules.SwapModule.ReturnLegs
[TestMethod]
public void UnrealizedPnl_多头浮盈()
{
// (105-100) × 1000 × 1 × 1 × 1 = 5000
Assert.AreEqual(5000m, MtmCalc.UnrealizedPnl(105m, 100m, 1000m, 1m, 1, 1m));
Assert.AreEqual(5000m, MtmCalc.UnrealizedPnl(105m, 100m, 1000m, 1m, 1, 1));
}
[TestMethod]
public void UnrealizedPnl_多头浮亏()
{
// (95-100) × 1000 × 1 × 1 × 1 = -5000
Assert.AreEqual(-5000m, MtmCalc.UnrealizedPnl(95m, 100m, 1000m, 1m, 1, 1m));
Assert.AreEqual(-5000m, MtmCalc.UnrealizedPnl(95m, 100m, 1000m, 1m, 1, 1));
}
[TestMethod]
public void UnrealizedPnl_空头反向()
{
// 空头: 价格跌=盈利 (95-100) × 1000 × 1 × (-1) × 1 = 5000
Assert.AreEqual(5000m, MtmCalc.UnrealizedPnl(95m, 100m, 1000m, 1m, -1, 1m));
Assert.AreEqual(5000m, MtmCalc.UnrealizedPnl(95m, 100m, 1000m, 1m, -1, 1));
}
}
}