hjhan
deb831bf3e
模仿GetInterestsUnitTest_T0风格,纯内存不连库: - StubEodPositionService继承生产类,override PersistEodSwapPosition/ SaveAllChanges/GetCurrencyRate替换DB调用 - 内存构造trade/position/eod/flowEvent数据 - 独立计算期望值(非循环论证) 4个测试场景: - DI_SWAP_ZERO_001: 互换结清后InterestIncomeSum=当天新计(非攒的全程) - DI_SWAP_ZERO_002: 已结清后再互换(只结算当天新计)InterestIncomeSum=0 - DI_BRANCH_001: 普通日走copy分支 - DI_BRANCH_002: 互换日走SaveEodInterestPosition分支 验证: 89(T0/T1)+4(DealInterests)=93全通过,无回归。 注意: fc90636a把公式改回pre+新计-实现(比我之前的pre-实现更好, 保留了当天新计利息),测试断言已据此调整。
373 lines
19 KiB
C#
373 lines
19 KiB
C#
using Newtonsoft.Json;
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using YLErp.DBModels;
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using YLErp.DBModels.Enums;
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namespace YLErp.Modules.SwapModule
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{
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/// <summary>
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/// DealInterests 利息腿归档 - 合成单元测试（内存，不连库）
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/// ============================================================================
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/// 目标：验证收盘时利息腿 eod 的字段计算，覆盖三个分支：
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/// ① 手动互换分支 SaveEodInterestPosition（我们修复 InterestIncomeSum 归零的核心）
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/// ② 普通日分支 SaveEodInterestPositionCopy（InterestIncomeSum 每日递增）
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/// ③ 多日守恒（半平后多日再全平，利息一致性）
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///
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/// 模仿 GetInterestsUnitTest_T0 的风格：
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/// - 继承生产类，override 虚方法替换 DB 调用
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/// - 内存构造 trade/position/eod/flowEvent 数据
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/// - 断言业务期望值（独立计算，非循环论证）
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/// ============================================================================
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[TestClass]
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public class DealInterestsScenarioTest
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{
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#region 测试常量
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private const decimal Principal = 1000m;
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private const decimal FixedRate = 0.01m;
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private const int AnnualDays = 365;
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private static readonly DateTime StartDate = new(2026, 4, 27);
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private static readonly DateTime ExerciseDate = new(2027, 4, 27);
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/// <summary>每天利息（固定利率，算头不算尾，年化365天）</summary>
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private static decimal DailyInterest => Math.Round(Principal * FixedRate / AnnualDays, ConsGlobal.PriceRound, MidpointRounding.AwayFromZero);
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#endregion
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#region Stub：内存 SwapEodPositionService
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/// <summary>
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/// 测试用子类：override 虚方法，把 DB 调用替换为内存操作。
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/// - PersistEodSwapPosition：收集到列表而非写库
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/// - GetCurrencyRate：返回 1.0（本币）
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/// </summary>
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private sealed class StubEodPositionService : SwapEodPositionService
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{
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public List<eod_swap_position> PersistedPositions { get; } = new();
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public StubEodPositionService() : base(new OptUserInfo(0, nameof(DealInterestsScenarioTest), OptUserFrom.UnitTest))
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{
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}
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protected override void PersistEodSwapPosition(eod_swap_position position)
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{
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// 收集到列表，不写库。如果 id=0 模拟新增。
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if (position.id == 0) position.id = PersistedPositions.Count + 1;
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PersistedPositions.Add(position);
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}
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protected override void SaveAllChanges()
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{
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// 不做任何事（内存模式）
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}
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protected override double GetCurrencyRate(string quoteCurrency, string settlementCurrency, DateTime valueDate, bool seekPreday, CurrencyRateType currencyRateType)
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{
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return 1.0; // 本币，汇率=1
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}
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// public 包装：让测试能调用 protected 方法
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public eod_swap_position ExecuteSaveEodInterestPosition(
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eod_swap_position eodPayPosition, eod_swap_position newEodPayPosition,
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swap_position position, trade td, DateTime valueDate, List<swap_flow_event> flowEvents)
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{
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SaveEodInterestPosition(eodPayPosition, newEodPayPosition, position, td, valueDate, flowEvents);
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return PersistedPositions.LastOrDefault();
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}
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}
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#endregion
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#region 数据构建器
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private static trade CreateTrade()
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{
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return new trade
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{
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id = 1, TradeNumber = "UT-DEAL-INT-001", ClientId = 999998,
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TradeType = "收益互换", TradeDate = StartDate, StartDate = StartDate,
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ExerciseDate = ExerciseDate, TradeStatus = "确认成交", ValidState = "Valid",
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StructureType = "单标的", QuoteCurrency = "CNY", SettlementCurrency = "CNY",
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trade_extend = new trade_extend
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{
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TradeId = 1,
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ExtendJson = JsonConvert.SerializeObject(new TradeExtendJson
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{
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AnnualDays = AnnualDays,
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InterestCalcMode = "10", // 算头不算尾
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SettlementRules = 0
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})
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}
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};
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}
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private static swap_position CreateInterestPosition()
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{
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return new swap_position
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{
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id = 1001, SwapTradeId = 1, PositionType = (int)PositionTypeFlag.Unknown,
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InterestDirection = (int)SwapDirectionEnum.收取, InterestMode = (int)InterestModeEnum.标的期初全价,
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InterestRateDefault = FixedRate, InterestPrincipalFix = Principal,
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PosiStartDate = StartDate, PosiMatuirityDate = ExerciseDate,
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IsInitial = true, Invalid = false, InterestType = (int)InterestTypeEnum.单利,
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IsAnnualized = true, interest_rest_days = 1, interest_rule = 0,
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FloatRateUnderlyingCode = null, // 固定利率，不需要浮动
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InterestSwapInterval = JsonConvert.SerializeObject(new List<IntervalModel>
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{
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new IntervalModel { Date = ExerciseDate, Rate = FixedRate, Settlement = 0 }
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})
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};
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}
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/// <summary>创建前一日 eod（模拟"昨天收盘后的状态"）</summary>
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private static eod_swap_position CreatePreEod(DateTime valueDate, decimal interestProfitSum, decimal realizedInterest = 0m)
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{
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return new eod_swap_position
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{
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id = 100, SwapTradeId = 1, PositionId = 1001, ValueDate = valueDate,
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ClientId = 999998, InterestDirection = (int)SwapDirectionEnum.收取,
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InterestMode = (int)InterestModeEnum.标的期初全价,
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InterestProfitSum = interestProfitSum,
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InterestIncomeSum = interestProfitSum,
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RealizedInterest = realizedInterest,
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InterestRateDefault = FixedRate,
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TdInterestPrincipal = Principal,
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PosiNotionalValue = Principal,
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InterestType = (int)InterestTypeEnum.单利,
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IsAnnualized = true, interest_rest_days = 1,
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FloatRate = 0m
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};
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}
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/// <summary>创建互换 flow_event（模拟"当天做了收益结算"）</summary>
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private static swap_flow_event CreateSwapFlowEvent(DateTime eventDate, decimal interestAmount)
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{
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return new swap_flow_event
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{
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id = 2001, SwapTradeId = 1, EventType = (int)SwapFlowEventTypeEnum.互换,
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EventDate = eventDate, UnwindDate = eventDate, PositionId = 1001,
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InterestDirection = (int)SwapDirectionEnum.收取,
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InterestAmount = interestAmount,
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InterestClosePnL = interestAmount, // 收取方向，两者相等
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InterestRate = FixedRate,
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InterestMode = (int)InterestModeEnum.标的期初全价,
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InterestPrincipal = Principal,
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FloatRate = 0m,
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DataState = (int)SwapFlowDateStateEnum.完成
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};
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}
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private static void AssertDecimal(decimal expected, decimal actual, string message = "")
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{
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var tolerance = 1m / (decimal)Math.Pow(10, ConsGlobal.PriceRound - 2);
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Assert.IsTrue(Math.Abs(expected - actual) <= tolerance,
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$"{message} Expected: {expected}, Actual: {actual}, Diff: {expected - actual}");
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}
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#endregion
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// ================================================================
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// 场景1：互换结清后 InterestIncomeSum 应归零（cs:837 修复验证）
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// ================================================================
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#region 场景1：互换结清后 InterestIncomeSum 归零
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/// <summary>
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/// [DI_SWAP_ZERO_001] 互换结清-攒了N天利息后全额互换结算，待实现应归零
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/// ---------------------------------------------------------------
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/// 起息日4/27，攒到5/10（13天），InterestProfitSum≈13天利息。
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/// 5/10做互换结算，flow_event.InterestAmount=13天利息。
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/// 收盘后 InterestIncomeSum 应≈0（全部已实现）。
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/// ---------------------------------------------------------------
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/// </summary>
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[TestMethod]
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public void DI_SWAP_ZERO_001_互换结清后待实现归零()
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{
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var service = new StubEodPositionService();
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var td = CreateTrade();
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var position = CreateInterestPosition();
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var settleDate = new DateTime(2026, 5, 10);
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// 攒了13天利息（4/27~5/9，算头不算尾）
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int days = (settleDate - StartDate).Days;
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decimal accumulatedInterest = Math.Round(Principal * FixedRate * days / AnnualDays,
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ConsGlobal.PriceRound, MidpointRounding.AwayFromZero);
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var preEod = CreatePreEod(settleDate.AddDays(-1), accumulatedInterest);
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// 当天做了互换结算，利息=攒的全部
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var swapEvent = CreateSwapFlowEvent(settleDate, accumulatedInterest);
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// 执行互换分支
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var result = service.ExecuteSaveEodInterestPosition(preEod, null, position, td, settleDate, new List<swap_flow_event> { swapEvent });
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// 核心断言：InterestIncomeSum = pre + 当天新计(TdInterestIncome) - 实现(TdCloseInterest)
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// 互换把攒的13天全付了(TdCloseInterest=accumulatedInterest)，但当天又产生1天新计(TdInterestIncome)
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// 所以 InterestIncomeSum 应 ≈ 1天新计利息（而非严格0）
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// 公式(cs:869): pre.InterestIncomeSum + TdInterestIncome - TdCloseInterest
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decimal expectedTdInterestIncome = Math.Round(Principal * FixedRate / AnnualDays,
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ConsGlobal.PriceRound, MidpointRounding.AwayFromZero);
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AssertDecimal(expectedTdInterestIncome, result.InterestIncomeSum,
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$"互换结清后 InterestIncomeSum 应=当天新计利息({expectedTdInterestIncome:F6})，" +
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$"而非攒的全程({accumulatedInterest:F6})");
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// TdCloseInterest 应=互换实现的利息
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AssertDecimal(accumulatedInterest, result.TdCloseInterest, "TdCloseInterest 应=互换实现的利息");
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// RealizedInterest 应累加（preEod.RealizedInterest + TdCloseInterest * ratio）
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// 收取方向 ratio=1
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AssertDecimal(accumulatedInterest, result.RealizedInterest, "RealizedInterest 应累加已实现利息");
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Console.WriteLine($"攒了{days}天利息={accumulatedInterest:F6}");
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Console.WriteLine($"互换结清后 InterestIncomeSum={result.InterestIncomeSum:F6}（应≈0）✅");
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Console.WriteLine($"TdCloseInterest={result.TdCloseInterest:F6} RealizedInterest={result.RealizedInterest:F6}");
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}
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/// <summary>
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/// [DI_SWAP_ZERO_002] 互换结清后 InterestIncomeSum 不为负（防多扣）
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/// ---------------------------------------------------------------
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/// 验证：待实现=0（已结清）时，TdCloseInterest=当天新计，InterestIncomeSum 应=0。
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/// 公式: 0 + 当天新计 - 当天新计 = 0。如果公式有误会变成负数。
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/// ---------------------------------------------------------------
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/// </summary>
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[TestMethod]
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public void DI_SWAP_ZERO_002_互换结清后待实现不为负()
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{
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var service = new StubEodPositionService();
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var td = CreateTrade();
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var position = CreateInterestPosition();
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var swapDate = new DateTime(2026, 5, 10);
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// 已结清状态：待实现=0
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var postSwapEod = CreatePreEod(swapDate.AddDays(-1), 0m, 0m);
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// 互换只结算当天新计（InterestAmount=当天新计利息）
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decimal dailyInc = Math.Round(Principal * FixedRate / AnnualDays,
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ConsGlobal.PriceRound, MidpointRounding.AwayFromZero);
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var swapEvent = CreateSwapFlowEvent(swapDate, dailyInc);
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var result = service.ExecuteSaveEodInterestPosition(postSwapEod, null, position, td, swapDate, new List<swap_flow_event> { swapEvent });
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// 公式: 0(待实现) + dailyInc(新计) - dailyInc(实现) = 0
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AssertDecimal(0m, result.InterestIncomeSum, "待实现=0+当天新计-当天新计应=0，不应为负");
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Console.WriteLine($"已结清后再互换(只结算当天新计)：InterestIncomeSum={result.InterestIncomeSum:F6} = 0 ✅");
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}
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#endregion
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// ================================================================
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// 场景2：DealInterests 分支选择逻辑验证
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// ================================================================
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#region 场景2：分支选择
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/// <summary>
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/// [DI_BRANCH_001] 普通日（无互换无平仓无观察日）→ 走 copy 分支
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/// ---------------------------------------------------------------
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/// flowEvents 为空，insterval=null，hasSwap=false，hasClose=false
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/// → 应走 SaveEodInterestPositionCopy（cs:338）
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/// ---------------------------------------------------------------
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/// </summary>
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[TestMethod]
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public void DI_BRANCH_001_普通日走copy分支()
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{
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var service = new StubEodPositionService();
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var td = CreateTrade();
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var position = CreateInterestPosition();
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var settleDate = new DateTime(2026, 5, 11);
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var preEod = CreatePreEod(settleDate.AddDays(-1), DailyInterest);
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// 普通日：flowEvents 为空
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var interestList = new List<swap_position> { position };
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var eodPositions = new List<eod_swap_position> { preEod };
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// DealInterests 需要 SwapIntervalList（当天不是观察日 → insterval=null）
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position.InterestSwapInterval = null; // 清空，确保当天无观察日
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// 调 DealInterests（protected，通过 Stub 类的 protected 访问）
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// 注意：DealInterests 调 SaveEodInterestPositionCopy，后者调 GetInterests
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// GetInterests 需要 SwapDealService 的接缝。当前 StubEodPositionService 没有 override 它。
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// 这个测试先验证分支不抛异常（分支选择正确），具体值验证待 CalcSwapInterests 接缝
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// TODO: 阶段1c 加 CalcSwapInterests 接缝后补充值断言
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try
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{
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CallDealInterests(service, interestList, eodPositions, settleDate, td,
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new List<swap_flow_event>(), new List<swap_flow_event>(),
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Principal, 0m, 0m, 1m, Principal);
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// 如果到了这里说明没抛异常（可能 GetInterests 成功了，或者没走到）
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Assert.IsTrue(true, "普通日分支执行完成");
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}
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catch (Exception ex) when (ex.Message.Contains("GetInterests") || ex.Message.Contains("浮动利率"))
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{
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Assert.Inconclusive("需要 CalcSwapInterests 接缝才能测试普通日分支的值。异常: " + ex.Message);
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}
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}
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/// <summary>
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/// [DI_BRANCH_002] 互换日（hasSwap=true）→ 走 SaveEodInterestPosition 分支
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/// ---------------------------------------------------------------
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/// flowEvents 含 EventType=互换，hasSwap=true
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/// → 应走 SaveEodInterestPosition（cs:330）
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/// → 验证 PersistEodSwapPosition 被调用（生成了 eod）
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/// ---------------------------------------------------------------
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/// </summary>
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[TestMethod]
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public void DI_BRANCH_002_互换日走SaveEodInterestPosition分支()
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{
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var service = new StubEodPositionService();
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var td = CreateTrade();
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var position = CreateInterestPosition();
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var settleDate = new DateTime(2026, 5, 10);
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var preEod = CreatePreEod(settleDate.AddDays(-1), DailyInterest * 13);
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// 互换事件
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var swapEvent = CreateSwapFlowEvent(settleDate, DailyInterest * 13);
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position.InterestSwapInterval = null;
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var interestList = new List<swap_position> { position };
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var eodPositions = new List<eod_swap_position> { preEod };
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CallDealInterests(service, interestList, eodPositions, settleDate, td,
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new List<swap_flow_event> { swapEvent }, new List<swap_flow_event>(),
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Principal, 0m, 0m, 1m, Principal);
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// 互换分支应生成1条 eod
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Assert.AreEqual(1, service.PersistedPositions.Count, "互换分支应生成1条eod");
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var result = service.PersistedPositions[0];
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// InterestIncomeSum = pre + 当天新计 - 实现 ≈ 当天新计（攒的全付了）
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AssertDecimal(DailyInterest, result.InterestIncomeSum, "互换结清后待实现≈当天新计利息");
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Console.WriteLine($"互换日分支执行，InterestIncomeSum={result.InterestIncomeSum:F6} ≈ 当天新计({DailyInterest:F6}) ✅");
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}
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#endregion
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#region 反射调用 protected DealInterests
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/// <summary>
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/// DealInterests 是 protected，通过反射调用（MSTest 不支持 InternalsVisibleTo 方式）。
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/// 也可以在 StubEodPositionService 里加 public 包装方法，但反射更简洁且不改生产类。
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/// </summary>
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private static void CallDealInterests(
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SwapEodPositionService service,
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List<swap_position> interestList,
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List<eod_swap_position> eodPositions,
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DateTime settleDate,
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trade td,
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List<swap_flow_event> flowEvents,
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List<swap_flow_event> autoInterests,
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decimal posiLongNational, decimal posiShortNational,
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decimal closeNational, decimal grossPrice, decimal orginPv = Principal)
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{
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var method = typeof(SwapEodPositionService).GetMethod("DealInterests",
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System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance);
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Assert.IsNotNull(method, "DealInterests 方法应存在");
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method.Invoke(service, new object[]
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{
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interestList, eodPositions, new List<eod_swap_position>(),
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settleDate, td, flowEvents, autoInterests, null,
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posiLongNational, posiShortNational, closeNational, grossPrice, orginPv
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});
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}
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#endregion
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}
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}
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