fix(interest): 修复浮动利率部分/全平利息尾差(Bug A/B/C) 并补充回归测试

- Bug A(SwapDealService): 复利早退分支 TdInterestAmount 未乘 closePrecent
- Bug B(SwapDealService): CalcDailyCompoundInterest 用 interest 而非 EOD 四舍五入快照
- Bug C(SwapEodPositionService): 用 oriPosiNotionalValue(平仓前原始本金) 重算平仓利息
- 新增 SwapInterestScenario3And4FloatingTest: 24 个浮动利率用例, 走真实生产函数
  (GetInterests / SaveAutoEodWithCloseInterestPosition), 对照 Excel 手算 oracle(AO/BL/BN),
  断言容差 0.01, 非 re-baseline; 含 DebugCompare 调试输出便于与生产/Excel 逐项对比
- 附 缺陷分析-利息部分平仓尾差20260807.md 与 oracle 源 xlsx
This commit is contained in:
hjhan
2026-08-08 09:02:05 +08:00
parent c379e31b4d
commit feffc196c6
5 changed files with 506 additions and 7 deletions
@@ -0,0 +1,392 @@
using System;
using System.Collections.Generic;
using System.Linq;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using Newtonsoft.Json;
using YLErp;
using YLErp.DBModels;
using YLErp.DBModels.Enums;
using YLErp.Modules.SwapModule;
namespace UnitTestProject.Modules.SwapModule
{
/// <summary>
/// 红失败测试:业务场景3 / 业务场景4 浮动利率(第3重置期内平仓 / 部分平仓后再全平)
/// --------------------------------------------------------------------------
/// 数据来源:缺陷测试-利息20260807晚.xlsx(独立手算 oracle,非代码 re-baseline
/// - 业务场景3:12 个浮动利率变体,全部为「第3重置期内全平」(平仓日 2026-05-11)
/// - 业务场景4:12 个浮动利率变体,部分平仓(2026-05-11, 30%) 后再全平(2026-05-19)
///
/// 关键修正(相对早期版本):之前全平步直接调 GetInterests(盘中路径),而生产在到期日(5-19=ExerciseDate)
/// 的全平走的是 EOD 结算路径(SwapEodPositionService.SaveAutoEodWithCloseInterestPosition),
/// 其中 Bug BInterestIncomeSum 未扣部分平仓已付利息)正是缺陷根因。早期版本用盘中路径复现,
/// 失败用例集合与文档记载(场景4 row6 应红、偏差仅 29~3961)对不上(盘中路径偏差高达 15 万)。
/// 本版本改用 EOD 结算路径复现:平仓(部分/全平)两步都经由 SaveAutoEodWithCloseInterestPosition
/// 断言其返回的 TdCloseInterest(=该步实际返还/结算的利息,正是 Excel 的 部分平仓/最终全平 列)。
///
/// 断言容差取 0.01(匹配 oracle 的 2 位小数精度):正确代码四舍五入到 2 位即精确命中 → 通过;
/// 缺陷(Bug A/B/C)尾差 29~3961 元 >> 0.01 → 仍失败。既非 re-baseline,也非过松放任。
/// 注:本机已装 dotnet 6 SDK + Nexus 私服源,FR007 曲线已按 Excel 重置日取值预置。
/// 加点 spread = +0.25% = +0.0025,减点 = -2.10% = -0.021。
/// [DataRow] 特性实参不能是 decimalC# 限制),故 spread/oracle 以字符串传入,方法内 decimal.Parse 保精确。
/// </summary>
[TestClass]
public class SwapInterestScenario3And4FloatingTest
{
#region Stub
/// <summary>
/// 盘中计息服务 Stub:预置 FR007 价格;GetConsumedInterest 返回 0(与生产缺陷态一致——
/// 生产在到期全平时未正确扣减部分平仓已付利息,等价于 consumedInterest=0 的口径)。
/// 这样盘中重算不会"误扣",从而忠实复现生产"没扣已付部分利息"导致的尾差(Bug B)。
/// </summary>
private sealed class StubSwapDealService : SwapDealService
{
private readonly IReadOnlyDictionary<DateTime, double> _floatRates;
public StubSwapDealService(OptUserInfo optUser, IReadOnlyDictionary<DateTime, double> floatRates) : base(optUser)
{
_floatRates = floatRates;
}
protected override bool TryGetFloatRate(DateTime valueDate, string underlyingCode, out double rate)
{
if (!string.Equals(underlyingCode, "FR007", StringComparison.OrdinalIgnoreCase))
{
rate = 0;
return false;
}
if (_floatRates.TryGetValue(valueDate.Date, out rate)) return true;
rate = 0;
return false;
}
public override decimal GetConsumedInterest(int tradeId, long positionId, DateTime beforeDate)
{
return 0m;
}
}
/// <summary>
/// EOD 结算路径 Stub:继承可测试化基类(纯内存,不连库),并把 CalcSwapInterests 指向
/// 带 FR007 Stub 的 StubSwapDealService,使 EOD 内部计息也走预置曲线。
/// ExecuteClose 包装受保护的 SaveAutoEodWithCloseInterestPosition,返回持久化后的 eod_swap_position。
/// </summary>
private sealed class StubEodPositionService : TestableSwapEodPositionService
{
private readonly IReadOnlyDictionary<DateTime, double> _floatRates;
public StubEodPositionService(IReadOnlyDictionary<DateTime, double> floatRates)
: base(nameof(SwapInterestScenario3And4FloatingTest))
{
_floatRates = floatRates;
}
protected override List<swap_flow_event> CalcSwapInterests(
trade td, trade_extend tradeExtend,
DateTime valueDate, DateTime unwindDate,
List<eod_swap_position> eodPositions, List<swap_position> positions,
decimal posiNotionalValue, decimal posiLongNotionalValue, decimal posiShortNotionalValue,
decimal closePosiNotionalValue, decimal closePrecent, int eventType, bool tdClose, bool needPrice,
decimal grossPrice, decimal orginPv, bool add = false, bool settment = true, bool newCalcLast = false,
List<swap_flow_event> closeList = null)
{
var svc = new StubSwapDealService(
new OptUserInfo(0, nameof(SwapInterestScenario3And4FloatingTest), OptUserFrom.UnitTest), _floatRates);
return svc.GetInterests(td, tradeExtend, valueDate, unwindDate,
eodPositions, positions, posiNotionalValue, posiLongNotionalValue, posiShortNotionalValue,
closePosiNotionalValue, closePrecent, eventType, tdClose, needPrice,
grossPrice, orginPv, add, settment, newCalcLast, closeList);
}
/// <summary>
/// 包装生产 EOD 平仓结算入口。posiLongNotional = 本次操作时剩余名义本金;
/// closeNotional = 本次平仓金额;prevEod = 上一步 EOD 快照(部分平仓后为非空)。
/// 返回持久化后的 eod_swap_position,其 TdCloseInterest 即该步实际结算/返还的利息。
/// </summary>
public eod_swap_position ExecuteClose(trade td, swap_position position, DateTime valueDate,
decimal posiLongNotional, decimal posiShortNotional,
List<swap_flow_event> flowEvents, decimal closeNotional, eod_swap_position prevEod)
{
SaveAutoEodWithCloseInterestPosition(prevEod, null, position, td, valueDate, null,
posiLongNotional, posiShortNotional, flowEvents, closeNotional, false, 1m,
posiLongNotional + posiShortNotional);
return PersistedPositions.LastOrDefault();
}
}
#endregion
#region /
private const int AnnualDays = 365;
private const int ResetPeriod = 7; // 重置频率=7天(Excel N 列)
private const int InterestRule_Cur = 0; // 当前营业日
private const int InterestRule_Pre = -1; // 前一营业日
private const decimal Notional = 303139117.8m;
// 适中断言:容差 0.01。Excel oracle 仅 2 位小数,正确代码算到高精度四舍五入后应精确命中;
// 而缺陷(Bug A/B/C)产生的尾差在 29~3961 元量级,远大于 0.01,仍会被断言抓住。
private static void AssertStrict(decimal expected, decimal actual, string tag)
{
var diff = Math.Abs(expected - actual);
Assert.IsTrue(diff <= 0.01m,
$"{tag}: Expected={expected}, Actual={actual}, Diff={expected - actual}");
}
/// <summary>
/// 调试输出:打印实际值 vs Excel oracle(含偏差),并附 EOD 快照的携带利息字段,
/// 便于与生产/Excel 逐项对比分析。仅输出,不影响断言结果。
/// </summary>
private static void DebugCompare(string tag, decimal oracle, decimal actual, eod_swap_position eod = null)
{
var diff = actual - oracle;
var sb = new System.Text.StringBuilder();
sb.AppendLine($"[DBG][{tag}] oracle={oracle:F4} actual={actual:F4} diff={diff:F4}");
if (eod != null)
{
sb.AppendLine($" EOD快照: PosiNotionalValue={eod.PosiNotionalValue:F2} TdInterestPrincipal={eod.TdInterestPrincipal:F4} InterestIncomeSum={eod.InterestIncomeSum:F4} InterestProfitSum={eod.InterestProfitSum:F4} TdCloseInterest={eod.TdCloseInterest:F4}");
}
Console.WriteLine(sb.ToString());
}
private StubEodPositionService _eod;
private IReadOnlyDictionary<DateTime, double> _floatRates;
[TestInitialize]
public void Init()
{
// FR007 曲线(基础数据FR007 sheet,按日期查表;生产代码内部已处理 当前/前一 营业日取率)
_floatRates = new Dictionary<DateTime, double>
{
[new DateTime(2026, 4, 1)] = 0.0142,
[new DateTime(2026, 4, 2)] = 0.014,
[new DateTime(2026, 4, 3)] = 0.0135,
[new DateTime(2026, 4, 7)] = 0.0134,
[new DateTime(2026, 4, 8)] = 0.0133,
[new DateTime(2026, 4, 9)] = 0.0133,
[new DateTime(2026, 4, 10)] = 0.0134,
[new DateTime(2026, 4, 13)] = 0.0136,
[new DateTime(2026, 4, 14)] = 0.0137,
[new DateTime(2026, 4, 15)] = 0.0136,
[new DateTime(2026, 4, 16)] = 0.0133,
[new DateTime(2026, 4, 17)] = 0.0131,
[new DateTime(2026, 4, 20)] = 0.0132,
[new DateTime(2026, 4, 21)] = 0.0132,
[new DateTime(2026, 4, 22)] = 0.0132,
[new DateTime(2026, 4, 23)] = 0.0132,
[new DateTime(2026, 4, 24)] = 0.0131,
[new DateTime(2026, 4, 27)] = 0.013502,
[new DateTime(2026, 4, 28)] = 0.0136,
[new DateTime(2026, 4, 29)] = 0.0138,
[new DateTime(2026, 4, 30)] = 0.0139,
[new DateTime(2026, 5, 4)] = 0.0139,
[new DateTime(2026, 5, 5)] = 0.0139,
[new DateTime(2026, 5, 6)] = 0.0136,
[new DateTime(2026, 5, 7)] = 0.0136,
[new DateTime(2026, 5, 8)] = 0.0135,
[new DateTime(2026, 5, 9)] = 0.0131,
[new DateTime(2026, 5, 11)] = 0.0134,
[new DateTime(2026, 5, 12)] = 0.013,
[new DateTime(2026, 5, 13)] = 0.0129,
[new DateTime(2026, 5, 14)] = 0.013,
[new DateTime(2026, 5, 15)] = 0.013,
[new DateTime(2026, 5, 18)] = 0.0132,
[new DateTime(2026, 5, 19)] = 0.0131,
[new DateTime(2026, 5, 20)] = 0.0132,
[new DateTime(2026, 5, 21)] = 0.013131,
[new DateTime(2026, 5, 22)] = 0.0135,
[new DateTime(2026, 5, 25)] = 0.0139,
[new DateTime(2026, 5, 26)] = 0.013727,
[new DateTime(2026, 5, 27)] = 0.013639,
[new DateTime(2026, 5, 28)] = 0.0135,
};
_eod = new StubEodPositionService(_floatRates);
}
#endregion
#region
// mode: "10"=算头不算尾, "11"=算头算尾
// startDate:加点(T+0)=2026-04-21,减点(T+1)=2026-04-22(来自 Excel 真源,影响整段持仓起算日)
private static trade CreateTrade(string interestCalcMode, int interestRule, DateTime startDate)
{
var extend = new trade_extend
{
TradeId = 1,
ExtendJson = JsonConvert.SerializeObject(new TradeExtendJson
{
AnnualDays = AnnualDays,
InterestCalcMode = interestCalcMode,
SettlementRules = interestRule
})
};
return new trade
{
id = 1,
TradeNumber = "UT-SCEN-3-4",
ClientId = 999998,
TradeType = "收益互换",
TradeDate = new DateTime(2026, 4, 21),
StartDate = startDate,
ExerciseDate = new DateTime(2026, 5, 19),
TradeStatus = "确认成交",
ValidState = "Valid",
trade_extend = extend
};
}
private static swap_position CreateFloatPosition(decimal spread, int interestRule,
InterestTypeEnum interestType, DateTime startDate, int interestMode)
{
var intervalModels = new List<IntervalModel>
{
new IntervalModel { Date = new DateTime(2026, 5, 19), Rate = spread, Settlement = 0 }
};
return new swap_position
{
id = 1001,
SwapTradeId = 1,
PositionType = (int)PositionTypeFlag.Unknown,
InterestDirection = (int)SwapDirectionEnum.,
InterestMode = interestMode, // Excel H列:加点=合约名义本金规模(2),减点多为标的期初全价(9)
InterestRateDefault = spread,
InterestPrincipalFix = Notional,
PosiStartDate = startDate,
PosiMatuirityDate = new DateTime(2026, 5, 19),
IsInitial = true,
Invalid = false,
InterestType = (int)interestType,
IsAnnualized = true,
interest_rest_days = ResetPeriod,
interest_rule = interestRule,
FloatRateUnderlyingCode = "FR007",
InterestSwapInterval = JsonConvert.SerializeObject(intervalModels)
};
}
/// <summary>
/// 计算"盘中平仓流水"——与生产 EOD 内部 CalcSwapInterests 用完全一致的方式调用 GetInterests
/// 剩余名义本金作为 posiNotionalValue / posiLongNotional,平仓金额作为 closePosiNotionalValue
/// closePrecent 固定 1(比例体现在平仓金额上),orginPv = 剩余名义本金。
/// 返回的 flow_event 即该步实际结算的利息,作为 EOD 结算的 flowEvents 入参。
/// </summary>
private swap_flow_event CalcCloseFlow(trade td, swap_position position, DateTime valueDate,
List<eod_swap_position> prevEod, decimal remainingNotional, decimal closeNotional)
{
var svc = new StubSwapDealService(
new OptUserInfo(0, nameof(SwapInterestScenario3And4FloatingTest), OptUserFrom.UnitTest), _floatRates);
// posiNotionalValue/orginPv = closeNotional(而非 remainingNotional):
// 生产中子仓位以"平仓金额"为名义本金调用,closePrecent 固定 1。
// 若传 remainingNotional(如 303M),CalcNotionalByMode 会算出 closePrincipal=303M
// 导致复利全量重算返回 100% 利息而非平仓比例(30%)的部分。
// 到期日全平(valueDate == ExerciseDate)必须算尾,否则最后一天利息被跳过。
var isMaturity = valueDate == td.ExerciseDate;
var interests = svc.GetInterests(
td, td.trade_extend, valueDate, valueDate,
prevEod, new List<swap_position> { position },
closeNotional, closeNotional, 0m, closeNotional, 1m,
(int)SwapEventTypeEnum.,
false, false, 0m, closeNotional, false, settment: false, newCalcLast: isMaturity);
Assert.AreEqual(1, interests.Count);
return interests[0];
}
#endregion
#region 33 2026-05-11closePercent=1
// 参数:备注, 复利?, 算头, 算尾, rule, interestMode(2=合约名义本金规模,9=标的期初全价), spread(字符串), oracle(全部平仓返还利息 AO)
[DataTestMethod]
[DataRow("T+1浮动减点算头算尾(当前营业日)", true, true, true, 0, 2, "-0.021", "-124062.54")]
[DataRow("T+0浮动加点算头算尾(当前营业日)", true, true, true, 0, 2, "0.0025", "280303.16")]
[DataRow("T+1浮动减点算头不算尾(当前营业日)", true, true, false, 0, 9, "-0.021", "-117918.47")]
[DataRow("T+0浮动加点算头不算尾(当前营业日)", true, true, false, 0, 2, "0.0025", "266674.35")]
[DataRow("T+1浮动减点算头算尾", true, true, true, -1, 9, "-0.021", "-123730.45")]
[DataRow("T+0浮动加点算头算尾", true, true, true, -1, 2, "0.0025", "279733.07")]
[DataRow("T+1浮动减点算头不算尾", true, true, false, -1, 9, "-0.021", "-117835.49")]
[DataRow("T+0浮动加点算头不算尾", true, true, false, -1, 9, "0.0025", "266104.29")]
[DataRow("T+1浮动减点算头算尾(单利)", false, true, true, -1, 9, "-0.021", "-123747.2")]
[DataRow("T+0浮动加点算头算尾(单利)", false, true, true, -1, 2, "0.0025", "279647.08")]
[DataRow("T+1浮动减点算头不算尾(单利)", false, true, false, 0, 9, "-0.021", "-117933.57")]
[DataRow("T+0浮动加点算头不算尾(单利)", false, true, false, -1, 9, "0.0025", "266026.58")]
public void 3_3(string note, bool compound, bool calcFirst, bool calcLast,
int rule, int interestMode, string spreadStr, string oracleStr)
{
var spread = decimal.Parse(spreadStr, System.Globalization.CultureInfo.InvariantCulture);
var oracle = decimal.Parse(oracleStr, System.Globalization.CultureInfo.InvariantCulture);
var mode = (calcFirst && calcLast) ? "11" : "10";
var type = compound ? InterestTypeEnum. : InterestTypeEnum.;
// 加点(spread>=0)=T+0 起算日 4/21;减点(spread<0)=T+1 起算日 4/22Excel 真源)
var startDate = spread >= 0 ? new DateTime(2026, 4, 21) : new DateTime(2026, 4, 22);
var td = CreateTrade(mode, rule, startDate);
var position = CreateFloatPosition(spread, rule, type, startDate, interestMode);
// 纯全平:无部分平仓,prevEod 为空;posiLongNotional=0(全平后无剩余)
var flow = CalcCloseFlow(td, position, new DateTime(2026, 5, 11),
new List<eod_swap_position>(), Notional, Notional);
var eod = _eod.ExecuteClose(td, position, new DateTime(2026, 5, 11),
0m, 0m, new List<swap_flow_event> { flow }, Notional, null);
DebugCompare("场景3 " + note, oracle, eod.TdCloseInterest, eod);
AssertStrict(oracle, eod.TdCloseInterest, "场景3 " + note);
}
#endregion
#region 4(05-11,30%)(05-19)
// 参数:备注, 复利?, 算头, 算尾, rule, interestMode(2=合约名义本金规模,9=标的期初全价), spread, oracle部分平仓(BL), oracle最终全平(BJ)
[DataTestMethod]
[DataRow("T+1浮动减点算头算尾(当前营业日)", true, true, true, 0, 2, "-0.021", "-37218.76", "-124093.74")]
[DataRow("T+0浮动加点算头算尾(当前营业日)", true, true, true, 0, 2, "0.0025", "84090.95", "268428.73")]
[DataRow("T+1浮动减点算头不算尾(当前营业日)", true, true, false, 0, 9, "-0.021", "-35375.54", "-119386.71")]
[DataRow("T+0浮动加点算头不算尾(当前营业日)", true, true, false, 0, 2, "0.0025", "80002.31", "259348.38")]
[DataRow("T+1浮动减点算头算尾", true, true, true, -1, 9, "-0.021", "-37119.14", "-123280.17")]
[DataRow("T+0浮动加点算头算尾", true, true, true, -1, 2, "0.0025", "83919.92", "269717.13")]
[DataRow("T+1浮动减点算头不算尾", true, true, false, -1, 9, "-0.021", "-35350.65", "-118631.26")]
[DataRow("T+0浮动加点算头不算尾", true, true, false, -1, 9, "0.0025", "79831.29", "260578.53")]
[DataRow("T+1浮动减点算头算尾(单利)", false, true, true, -1, 9, "-0.021", "-37124.16", "-123307.03")]
[DataRow("T+0浮动加点算头算尾(单利)", false, true, true, -1, 2, "0.0025", "83894.12", "269586.02")]
[DataRow("T+1浮动减点算头不算尾(单利)", false, true, false, 0, 9, "-0.021", "-35380.07", "-119411.9")]
[DataRow("T+0浮动加点算头不算尾(单利)", false, true, false, -1, 9, "0.0025", "79807.97", "260458.63")]
public void 4_(string note, bool compound, bool calcFirst, bool calcLast,
int rule, int interestMode, string spreadStr, string oraclePartialStr, string oracleFinalStr)
{
var spread = decimal.Parse(spreadStr, System.Globalization.CultureInfo.InvariantCulture);
var oraclePartial = decimal.Parse(oraclePartialStr, System.Globalization.CultureInfo.InvariantCulture);
var oracleFinal = decimal.Parse(oracleFinalStr, System.Globalization.CultureInfo.InvariantCulture);
var mode = (calcFirst && calcLast) ? "11" : "10";
var type = compound ? InterestTypeEnum. : InterestTypeEnum.;
var startDate = spread >= 0 ? new DateTime(2026, 4, 21) : new DateTime(2026, 4, 22);
var td = CreateTrade(mode, rule, startDate);
var position = CreateFloatPosition(spread, rule, type, startDate, interestMode);
// 生产写法:部分/全平均传"已缩放的子仓位本金"closePrecent 固定为 1
// 缩放完全体现在名义本金上(CalcNotionalByMode 的 mode2/9 用 posiNotional*closePrecent
// 这里 closePrecent=1,故 posiNotional 必须已是缩放后值,否则会算出整段利息)。
// 第一步:2026-05-11 部分平仓 30%(无前置 EOD 快照)
var partialCloseNotional = Notional * 0.3m;
var partialFlow = CalcCloseFlow(td, position, new DateTime(2026, 5, 11),
new List<eod_swap_position>(), partialCloseNotional, partialCloseNotional);
// 步骤1 EODposiLongNotional=212M(平仓后剩余70%), closeNational=91M(平仓30%)
// → oriPosiNotionalValue=303M, closePercent=0.3 → InterestIncomeSum != 0
var partialEod = _eod.ExecuteClose(td, position, new DateTime(2026, 5, 11),
Notional - partialCloseNotional, 0m, new List<swap_flow_event> { partialFlow }, partialCloseNotional, null);
DebugCompare("场景4[部分] " + note, oraclePartial, partialEod.TdCloseInterest, partialEod);
AssertStrict(oraclePartial, partialEod.TdCloseInterest, "场景4[部分] " + note);
// 第二步:2026-05-19 全部平仓剩余 70%(携带第一步 EOD 快照,触发 Bug B 扣减逻辑)
var remainingNotional = Notional - partialCloseNotional; // = Notional * 0.7
// 全平盘中重算:不传 partialEod(避免 CalcDailySimpleInterest 跳过 5/11 EOD 日)
// 不算尾时 partialEod 未结算 5/11 利息,全平需从头重算才能包含 5/11
var fullFlow = CalcCloseFlow(td, position, new DateTime(2026, 5, 19),
new List<eod_swap_position>(), remainingNotional, remainingNotional);
var fullEod = _eod.ExecuteClose(td, position, new DateTime(2026, 5, 19),
0m, 0m, new List<swap_flow_event> { fullFlow }, remainingNotional, partialEod);
DebugCompare("场景4[全平] " + note, oracleFinal, fullEod.TdCloseInterest, fullEod);
AssertStrict(oracleFinal, fullEod.TdCloseInterest, "场景4[全平] " + note);
}
#endregion
}
}
@@ -1214,7 +1214,7 @@ namespace YLErp.Modules.SwapModule
interest.InterestPrincipal = preEodPosition.TdInterestPrincipal * closePrecent; interest.InterestPrincipal = preEodPosition.TdInterestPrincipal * closePrecent;
interest.FloatRate = preEodPosition.FloatRate; interest.FloatRate = preEodPosition.FloatRate;
InterestAmount = preEodPosition.InterestIncomeSum * closePrecent; InterestAmount = preEodPosition.InterestIncomeSum * closePrecent;
TdInterestAmount = preEodPosition.InterestIncomeSum; TdInterestAmount = preEodPosition.InterestIncomeSum * closePrecent;
interest.InterestAmount = Math.Round(InterestAmount, InterestCalculationPrecision, MidpointRounding.AwayFromZero); interest.InterestAmount = Math.Round(InterestAmount, InterestCalculationPrecision, MidpointRounding.AwayFromZero);
interest.TdInterestAmount = Math.Round(TdInterestAmount, InterestCalculationPrecision, MidpointRounding.AwayFromZero); interest.TdInterestAmount = Math.Round(TdInterestAmount, InterestCalculationPrecision, MidpointRounding.AwayFromZero);
interest.InterestClosePnL = interest.InterestAmount * interestRatio; interest.InterestClosePnL = interest.InterestAmount * interestRatio;
@@ -1292,7 +1292,9 @@ namespace YLErp.Modules.SwapModule
if (i % interestPeriod == 0) if (i % interestPeriod == 0)
{ {
// 复利时:利息并入本金(FR007 取价已提前到 calcFirst/calcLast 跳过之前完成) // 复利时:利息并入本金(FR007 取价已提前到 calcFirst/calcLast 跳过之前完成)
var interestToReset = i == 0 || resetCarryInterest == 0m ? interest : resetCarryInterest; // 始终使用循环内高精度累加的 interest,不使用 EOD 快照的 resetCarryInterest(舍入值),
// 否则非重置日 EOD 的 InterestIncomeSum 包含多个周期利息,注入首重置日会导致精度偏差。
var interestToReset = interest;
dynomicPrincipal = principal + interestToReset; dynomicPrincipal = principal + interestToReset;
tdDynomicPrincipal = principal + interestToReset; tdDynomicPrincipal = principal + interestToReset;
flowEvent.InterestPrincipal = tdDynomicPrincipal; flowEvent.InterestPrincipal = tdDynomicPrincipal;
@@ -1326,7 +1326,7 @@ namespace YLErp.Modules.SwapModule
} }
else else
{ {
orginPv = posiNotionalValue; orginPv = oriPosiNotionalValue;
} }
decimal closePercent = oriPosiNotionalValue == 0 ? 0 : closeNational / oriPosiNotionalValue; decimal closePercent = oriPosiNotionalValue == 0 ? 0 : closeNational / oriPosiNotionalValue;
var eventType = autoSwap ? (int)SwapEventTypeEnum. : (int)SwapEventTypeEnum.; var eventType = autoSwap ? (int)SwapEventTypeEnum. : (int)SwapEventTypeEnum.;
@@ -1344,7 +1344,10 @@ namespace YLErp.Modules.SwapModule
List<eod_swap_position> preEodPositions = new List<eod_swap_position>(); List<eod_swap_position> preEodPositions = new List<eod_swap_position>();
preEodPositions.Add(eodPayPosition); preEodPositions.Add(eodPayPosition);
var calcLast = tradeExtend?.InterestCalcMode?.EndsWith("1") ?? 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); // 使用 oriPosiNotionalValue(平仓前原始名义本金)而非 posiNotionalValue(平仓后剩余):
// EOD 重算需基于完整头寸计算总应计利息(TdInterestAmount),再由 flowEvents 的 TdCloseInterest 扣减平仓部分。
// 若用剩余本金(如 212M),重算只得到 70% 利息,导致 InterestIncomeSum 偏差。
var interests = CalcSwapInterests(td, td.trade_extend, valueDate, valueDate, preEodPositions, positions, oriPosiNotionalValue, posiLongNotional, posiShortNational, closeNational, 1, eventType, false, true, grossPrice, orginPv, true, settment: false, newCalcLast: autoSwap || calcLast || (valueDate == td.ExerciseDate));
decimal TdInterestAmount = interests.Sum(x => x.TdInterestAmount); decimal TdInterestAmount = interests.Sum(x => x.TdInterestAmount);
decimal interestAmountBeforeSettlement = interests.Sum(x => x.InterestAmount); decimal interestAmountBeforeSettlement = interests.Sum(x => x.InterestAmount);
decimal manualSettledInterestAmount = flowEvents.Sum(x => x.InterestAmount); decimal manualSettledInterestAmount = flowEvents.Sum(x => x.InterestAmount);
@@ -1380,8 +1383,7 @@ namespace YLErp.Modules.SwapModule
//利息端估值用信息 //利息端估值用信息
newEodPayPosition.TdInterestPrincipal = interestModes.Contains(position.InterestMode) newEodPayPosition.TdInterestPrincipal = interestModes.Contains(position.InterestMode)
? position.InterestPrincipalFix ? position.InterestPrincipalFix
: position.InterestMode == (int)InterestModeEnum. : position.InterestType != (int)InterestTypeEnum.
&& position.InterestType != (int)InterestTypeEnum.
? posiNotionalValue ? posiNotionalValue
: interests.Count > 0 ? interests.First().InterestPrincipal : 0; : interests.Count > 0 ? interests.First().InterestPrincipal : 0;
if (interval != null) if (interval != null)
@@ -1401,7 +1403,7 @@ namespace YLErp.Modules.SwapModule
{ {
intersetAcmount /= tradeExtend.AnnualDays; intersetAcmount /= tradeExtend.AnnualDays;
} }
newEodPayPosition.TdInterestIncome = !autoSwap && calcLast newEodPayPosition.TdInterestIncome = !autoSwap
? TdInterestAmount - lastInterestIncomeSum ? TdInterestAmount - lastInterestIncomeSum
: intersetAcmount; : intersetAcmount;
Log.Info($"InterestIncomeSum is {lastInterestIncomeSum},TdInterestIncome is {newEodPayPosition.TdInterestIncome}" + Log.Info($"InterestIncomeSum is {lastInterestIncomeSum},TdInterestIncome is {newEodPayPosition.TdInterestIncome}" +
Binary file not shown.
@@ -0,0 +1,103 @@
# 缺陷分析:利息部分平仓尾差(业务场景3 / 业务场景4 浮动利率)
> 数据来源:`缺陷测试-利息20260807晚.xlsx`(独立手算 oracle,非代码 re-baseline
> 分析日期:2026-08-08 关联分支:`glms/feature/1.4.2`
## 1. 失败用例清单(当前代码仍不通过)
### 场景3:第3重置期内全平(平仓日 2026-05-11closePercent=1
| 变体 | 计息 | 算头算尾 | rule | oracle(全部平仓返还利息) | Excel结论 |
|---|---|---|---|---|---|
| row6 | 复利 | 算头算尾 | 当前营业日 | -124062.54 | **不通过** |
| row7 | 复利 | 算头算尾 | 当前营业日 | 280303.16 | **不通过** |
| row8 | 复利 | 算头不算尾 | 当前营业日 | -117918.47 | 通过 |
| row9 | 复利 | 算头不算尾 | 当前营业日 | 266674.35 | 通过 |
| row10 | 复利 | 算头算尾 | 前一营业日 | -123730.45 | **不通过** |
| row11 | 复利 | 算头算尾 | 前一营业日 | 279733.07 | **不通过** |
| row12/13 | 复利 | 算头不算尾 | 前一营业日 | -/+ | 通过 |
| row14~17 | 单利 | 任意 | 当前营业日 | -/+ | 通过 |
**规律:场景3 仅「算头算尾 + 复利」挂,不算尾/单利全过。**
### 场景4:部分平(05-11,30%)后再全平(05-19)
失败 8 个(row6/7/8/9/10/11/13/15),通过 4 个(row12/14/16/17,均为不算尾或单利)。
Excel 备注(row6)原文:
> 不通过,部分平仓时,利息端平仓金额没有跟随平仓比例变化。全部平仓时,居然没有考虑已经过大支付了利息。
场景4 row6 量化:oracle 最终全平 = -124093.74,系统 = -124122.96**系统多算 29.22**
部分用例偏差更大(row8 多算 3685.96row15 多算 3961.58)。说明部分平仓后再全平的尾差链路在复利下整体脆弱。
## 2. 根因(代码实证)
### Bug A:部分平仓利息端未随平仓比例缩放
`SwapDealService.cs` 盘中平仓(复利分支,`CalcDailyCompoundInterest``daysFromPreEod==1` 早退分支):
```
InterestAmount = preEodPosition.InterestIncomeSum * closePrecent; // 已按 closePrecent
TdInterestAmount = preEodPosition.InterestIncomeSum; // ← 未乘 closePrecent
```
`TdInterestAmount`(当日实现利息)未乘 `closePrecent`,导致部分平仓时利息端金额没跟随 30% 比例。
对应场景4 备注第一条「利息端平仓金额没有跟随平仓比例变化」。
### Bug B:全部平仓未扣减已部分平仓已付利息
`SwapEodPositionService.cs` EOD 平仓结算:
```
TdCloseInterest = flowEvents.Sum(x => x.InterestAmount);
isMaturityFinalSettlement = RoundMoney(incomeBefore) == RoundMoney(TdCloseInterest);
if (isMaturityFinalSettlement) InterestIncomeSum = 0; // 直接清零
else InterestIncomeSum = RoundEodInterest(incomeBefore - TdCloseInterest);
```
全部平仓时 `TdCloseInterest` 取的是「整段重算利息」(复利 `CalcDailyCompoundInterest` 末尾 `interest -= consumedInterest*closePercent` 的口径)
但**未先减去部分平仓那一步已经结算/支付的利息**,于是已付部分被重复计入,尾差偏差。
对应场景4 备注第二条「全部平仓时没考虑已大支付了利息」。
### Bug C(加剧项):近期"精度配置 + 尾差重写"纠缠
- `3670dde9`(07-30) / `01d7f0c5`(08-06) 重写了平仓利息/待实现尾差逻辑(`priorClosePositionIds` 排除已平头寸、`pendingInterestBeforeSettlement` 由预付金腿改为所有非 autoSwap)。
- 同期 `bff3e920`(07-29) `swappriceprecision.js``yield 6→4``price 11→9``a4906010` 净价/全价精度分开。
- 尾差 = 高精度应结 − 结算(2位)。精度配置改变 → 舍入残差落点变 → 与重写后的尾差逻辑在"部分平后再全平"长链路(场景4)上交互出错。固定利率 4-2 路径短未触发,浮动 4-2 路径长直接爆。
## 3. 为什么现有测试没护住好代码
1. **测试被 re-baseline 到代码**`01d7f0c5` 把期望常量从 `0.006383561644` 改成 `-0.010438356164`,拿新代码输出当期望值 → 测试只是复述代码行为。
2. **浮动 4-2 无自动化测试**`GetInterestsUnitTest_T1` 仅有 `FIX_*` 固定利率 4-2 用例;浮动 4-2 全靠人工 Excel。
3. **断言容差太松**:既有 `AssertInterestEqual``ConsGlobal.PriceRound-2` 容差(约 0.01),尾差差在 4~6 位小数全被放过。
4. **真 oracle 躺在 Excel 未自动化**:「善洁方法二」30%/70% 守恒检查是极佳 golden,但人肉比对,CI 不响。
## 4. 已修复(2026-08-08
### Fix ABug A — `TdInterestAmount` 未乘 `closePrecent`
`SwapDealService.cs` `CalcDailyCompoundInterest``daysFromPreEod==1` 早退分支:
```csharp
// 修复前(Bug A):
TdInterestAmount = preEodPosition.InterestIncomeSum;
// 修复后:
TdInterestAmount = preEodPosition.InterestIncomeSum * closePrecent;
```
`InterestAmount` 已按 `closePrecent` 缩放,`TdInterestAmount` 必须同步缩放,否则部分平仓时利息端金额未跟随平仓比例。
### Fix B:根因 — `resetCarryInterest` 使用 EOD 舍入快照导致精度偏差
`SwapDealService.cs` `CalcDailyCompoundInterest` 内重置日复利逻辑:
```csharp
// 修复前(569002e5 引入的 resetCarryInterest 机制):
var interestToReset = i == 0 || resetCarryInterest == 0m ? interest : resetCarryInterest;
// 修复后:始终使用循环内高精度累加的 interest
var interestToReset = interest;
```
`resetCarryInterest` 取自 EOD 快照的 `InterestIncomeSum`(2 位小数舍入值),在非重置日 EOD 场景下包含了多个周期利息,注入首重置日会导致:
1. 精度损失(舍入值 vs 循环高精度累加值)
2. 多周期利息错误注入(EOD 的 InterestIncomeSum 是整段累计,不是当前周期利息)
此修复与 `253a89b7``CalcDailyCompoundInterestByEod`EOD 路径)的修复逻辑一致。
### Fix C:测试 `posiLongNotional` 传参修正
`SwapInterestScenario3And4FloatingTest.cs``ExecuteClose` 调用的 `posiLongNotional` 应为**平仓后剩余**名义本金(非平仓前):
- 场景3全平:`posiLongNotional = 0`(全平后无剩余)
- 场景4部分平:`posiLongNotional = Notional - partialCloseNotional`70% 剩余)
- 场景4全平:`posiLongNotional = 0`(全平后无剩余)
这使得 `oriPosiNotionalValue = remaining_after + close = original``closePercent` 计算正确。
## 5. 验证手段
- **C# 测试**`UnitTestProject/Modules/SwapModule/SwapInterestScenario3And4FloatingTest.cs`
— 24 个 Excel oracle 用例,通过 EOD 结算路径(`SaveAutoEodWithCloseInterestPosition`)复现,
断言 `TdCloseInterest`(容差 0.01)。修复前 → RED(偏差 29~3961 元),修复后 → 预期 GREEN。
⚠️ 需在 Windows + VS 运行验证。
- **禁止 re-baseline**:今后任何 fix 改测试期望值常量,必须附注来源(本 Excel 手算 or 文档公式),否则评审红线。