张名锐
ea2f583c6d
- 在日期刷新基线方法中添加平仓数量重新计算逻辑 - 确保非全平仓情况下按原比例重新计算平仓数量 - 添加单元测试验证部分平仓数量按原比例重算功能 - 修复了日期刷新后平仓比例与实际平仓数量不匹配的bug
386 lines
22 KiB
C#
386 lines
22 KiB
C#
namespace YLErp.Modules.SwapModule
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{
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/// <summary>
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/// 平仓比例口径A（占期初名义本金）产品契约测试
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/// ================================================================================
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/// 产品需求（不可违背）：
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/// ClosePercent 永远是"占期初名义本金(NotionalValue)的比例"，即口径A。
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/// 例：期初本金 5000 万，首次平 35%（ClosePercent=0.35），剩余 3250 万。
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/// 第二次想平掉剩余的 50%，ClosePercent 应 = 1625万/5000万 = 0.325（占期初），
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/// 而非 0.50（占剩余）。
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///
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/// 前后端协作约定：
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/// - 前端（unwindSwapTrade.js）：ClosePercent 始终以 NotionalValue 为分母计算/显示
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/// - 前端传给后端：ClosePercent 为口径A
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/// - 后端入口（SwapUnwind/ApplySwapTrade）：ToRemainingClosePercent 将 A→B 供内部计算
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/// - 后端落库（SaveSwapDealInternal）：ToOriginalClosePercent 将 B→A 还原存储
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/// - 后端 InitUnwind 默认值：CalcDefaultInitClosePercent = PosiNotionalValue/NotionalValue（口径A）
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///
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/// 本测试守护的回归场景（c9071a4e 曾犯的错误）：
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/// 1. 前端把 oriClosePercent 硬编码为 1（应为 PosiNotionalValue/NotionalValue）
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/// 2. 前端把 CloseNotionalValue 分母从 NotionalValue 改为 PosiNotionalValue
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/// 3. 前端把 ClosePercent 分母从 NotionalValue 改为 PosiNotionalValue
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/// 4. 前端把 getInterestList 的 notionalValue/posiNotionalValue 参数去掉
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/// 5. 前端把 calcCloseQtyByPercent 从 SwapCalc.calcCloseQtyByOriginalPercent 改为直接乘
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/// 6. 后端 InitUnwind 默认 ClosePercent 改为 1 而非剩余比例
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///
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/// 与既有测试的关系：
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/// - ApplySwapTradeClosePercentBugTest：测 A→B 转换函数正确性（函数级）
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/// - InitUnwindDefaultClosePercentTest：测默认值函数正确性（函数级）
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/// - 本测试：测完整多步场景的口径A契约（场景级），补齐"装配测试"盲区
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/// ================================================================================
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[TestClass]
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public class ClosePercentProductContractTest
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{
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// GLMS-20260701-0006 真实数据
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private const decimal OriginalNotional = 50_000_000m; // 期初名义本金(NotionalValue)
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private const decimal FirstClosePercentA = 0.35m; // 第一次平仓35%（口径A）
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private const decimal RemainingAfter1st = 32_500_000m; // 首次平35%后剩余(PosiNotionalValue)
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// 第二次想平掉剩余的 50% → 平仓额=16,250,000 → ClosePercent(A)=1625万/5000万=0.325
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private const decimal SecondCloseNotional = 16_250_000m;
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private const decimal SecondClosePercentA = 0.325m; // 口径A：占期初
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private const decimal SecondClosePercentB = 0.50m; // 口径B：占剩余
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// ================================================================
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// 契约1：ClosePercent = CloseNotionalValue / NotionalValue（口径A）
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// 如果有人把分母改成 PosiNotionalValue，此测试会红
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// ================================================================
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[TestMethod]
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public void CPC_001_平仓比例必须用期初名义本金为分母_而非剩余名义本金()
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{
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// 正确：口径A = 平仓名义本金 / 期初名义本金
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decimal correctA = SecondCloseNotional / OriginalNotional;
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SwapDealTestFactory.AssertDecimalEqual(SecondClosePercentA, correctA, 1e-10m,
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"口径A：16,250,000 / 50,000,000 = 0.325");
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// 错误：口径B = 平仓名义本金 / 剩余名义本金
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decimal buggyB = SecondCloseNotional / RemainingAfter1st;
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SwapDealTestFactory.AssertDecimalEqual(SecondClosePercentB, buggyB, 1e-10m,
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"口径B（错误）：16,250,000 / 32,500,000 = 0.50");
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// 两者必须不同——如果相同说明测试场景退化（首次平仓 remaining==original）
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Assert.AreNotEqual(correctA, buggyB,
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"口径A(0.325) 和 口径B(0.50) 在多次部分平仓后必须不同，否则测试场景退化");
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Console.WriteLine($"口径A={correctA}（正确），口径B={buggyB}（错误）");
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}
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// ================================================================
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// 契约2：CloseNotionalValue = ClosePercent × NotionalValue（口径A）
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// 如果有人把乘数改成 PosiNotionalValue，此测试会红
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// ================================================================
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[TestMethod]
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public void CPC_002_平仓名义本金必须用期初名义本金为乘数_而非剩余名义本金()
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{
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// 正确：口径A → CloseNotionalValue = ClosePercent(A) × NotionalValue
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decimal correctNotional = SecondClosePercentA * OriginalNotional;
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SwapDealTestFactory.AssertDecimalEqual(SecondCloseNotional, correctNotional, 1e-6m,
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"口径A：0.325 × 50,000,000 = 16,250,000");
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// 错误：口径B → CloseNotionalValue = ClosePercent(A) × PosiNotionalValue
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// 如果前端传口径A的0.325但误用 PosiNotionalValue 做乘数
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decimal buggyNotional = SecondClosePercentA * RemainingAfter1st;
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// 0.325 × 32,500,000 = 10,562,500 ≠ 16,250,000
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Assert.AreNotEqual(SecondCloseNotional, buggyNotional,
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"口径A的0.325 × 剩余本金32,500,000 = 10,562,500 ≠ 16,250,000，乘数错了");
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Console.WriteLine($"正确={correctNotional}，错误(用剩余)={buggyNotional}");
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}
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// ================================================================
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// 契约3：oriClosePercent = PosiNotionalValue / NotionalValue（不能硬编码为1）
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// 如果有人把 oriClosePercent 改成 1，此测试会红
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// ================================================================
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[TestMethod]
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public void CPC_003_最多可平比例必须为剩余除以期初_不能硬编码为1()
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{
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// 正确：oriClosePercent = PosiNotionalValue / NotionalValue
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decimal correctOri = RemainingAfter1st / OriginalNotional;
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SwapDealTestFactory.AssertDecimalEqual(0.65m, correctOri, 1e-10m,
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"oriClosePercent = 32,500,000 / 50,000,000 = 0.65");
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// 错误：硬编码为 1（c9071a4e 的错误）
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decimal buggyOri = 1m;
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Assert.AreNotEqual(correctOri, buggyOri,
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"多次部分平仓后 oriClosePercent 必须小于 1，硬编码 1 会允许平超过剩余持仓");
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// 首次平仓时 oriClosePercent 才等于 1（remaining == original）
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decimal firstTimeOri = OriginalNotional / OriginalNotional;
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SwapDealTestFactory.AssertDecimalEqual(1m, firstTimeOri, 1e-10m,
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"首次平仓时 oriClosePercent = 1（remaining == original）");
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Console.WriteLine($"多次部分平仓后：oriClosePercent={correctOri}（≠1），首次：{firstTimeOri}（=1）");
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}
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// ================================================================
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// 契约4：CloseQty 必须经过 A→B 转换，不能直接 PositionQty × ClosePercent(A)
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// 如果有人删除 calcCloseQtyByOriginalPercent 调用改为直接乘，此测试会红
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// ================================================================
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[TestMethod]
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public void CPC_004_平仓数量必须经过口径A到B转换_不能直接乘()
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{
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// 场景：期初数量 32,500,000（=剩余数量），oriClosePercent=0.65
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// 用户输入 ClosePercent(A) = 0.325（想平剩余的 50%）
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decimal positionQty = RemainingAfter1st; // 32,500,000
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decimal oriClosePercent = RemainingAfter1st / OriginalNotional; // 0.65
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// 正确：CloseQty = PositionQty × (ClosePercent(A) / oriClosePercent)
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// = 32,500,000 × (0.325 / 0.65) = 32,500,000 × 0.5 = 16,250,000
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decimal correctQty = positionQty * (SecondClosePercentA / oriClosePercent);
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SwapDealTestFactory.AssertDecimalEqual(16_250_000m, correctQty, 1e-6m,
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"正确：32,500,000 × (0.325/0.65) = 16,250,000");
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// 错误：CloseQty = PositionQty × ClosePercent(A)（直接乘，不做转换）
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// = 32,500,000 × 0.325 = 10,562,500 ❌
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decimal buggyQty = positionQty * SecondClosePercentA;
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Assert.AreNotEqual(correctQty, buggyQty,
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"直接乘会得到 10,562,500 而非 16,250,000，数量算少 35%");
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// JS 浮点精度守卫：32500000×(0.5/0.65) 可能 = 24999999.999999996
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// SwapCalc.calcCloseQtyByOriginalPercent 用 roundHalfAwayFromZero 修复
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decimal jsFloatTrap = (decimal)((double)positionQty * ((double)SecondClosePercentA / (double)oriClosePercent));
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Console.WriteLine($"正确={correctQty}，错误(直接乘)={buggyQty}，JS浮点陷阱={jsFloatTrap}");
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}
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// ================================================================
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// 契约5：后端 A→B→A 往返转换必须还原（多次部分平仓场景）
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// 守护 SwapUnwind/ApplySwapTrade 入口的 ToRemainingClosePercent + SaveSwapDealInternal 的 ToOriginalClosePercent
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// ================================================================
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[TestMethod]
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public void CPC_005_多次部分平仓_A到B到A往返转换必须还原原值()
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{
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// 第二次部分平仓：前端传 ClosePercent(A) = 0.325
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decimal closePercentA = SecondClosePercentA;
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// 后端入口：A → B
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decimal closePercentB = SwapDealService.ToRemainingClosePercent(
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closePercentA, OriginalNotional, RemainingAfter1st);
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SwapDealTestFactory.AssertDecimalEqual(SecondClosePercentB, closePercentB, 1e-10m,
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"A→B：0.325 × 50,000,000 / 32,500,000 = 0.50");
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// 后端落库：B → A 还原
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decimal restoredA = SwapDealService.ToOriginalClosePercent(
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closePercentB, OriginalNotional, RemainingAfter1st);
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SwapDealTestFactory.AssertDecimalEqual(closePercentA, restoredA, 1e-10m,
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"B→A 还原：0.50 × 32,500,000 / 50,000,000 = 0.325（必须等于原始A）");
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Console.WriteLine($"A={closePercentA} → B={closePercentB} → A'={restoredA} ✅ 往返还原");
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}
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// ================================================================
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// 契约6：后端 InitUnwind 默认 ClosePercent = PosiNotionalValue / NotionalValue（口径A）
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// 不能硬编码为 1（c9071a4e 前端硬编码1的错误在后端等价于此）
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// ================================================================
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[TestMethod]
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public void CPC_006_InitUnwind默认值必须为剩余除以期初_不能硬编码为1()
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{
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// 多次部分平仓后：期初 50M，剩余 32.5M
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decimal defaultValue = SwapDealService.CalcDefaultInitClosePercent(
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OriginalNotional, RemainingAfter1st);
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// 正确：0.65（占期初的"平剩余全部"比例）
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SwapDealTestFactory.AssertDecimalEqual(0.65m, defaultValue, 1e-10m,
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"CalcDefaultInitClosePercent(50M, 32.5M) = 0.65（口径A）");
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// 不能是 1（硬编码错误）
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Assert.AreNotEqual(1m, defaultValue,
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"多次部分平仓后默认值不能为1，否则意味着'平掉原始全部'而非'平剩余全部'");
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Console.WriteLine($"InitUnwind 默认 ClosePercent(A) = {defaultValue}（≠1）✅");
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}
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// ================================================================
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// 契约7：SwapUnwind 第二次部分平仓必须正确做 A→B 转换
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// 这是"装配测试"——验证后端入口确实执行了转换，而不只是函数本身正确
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// ================================================================
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[TestMethod]
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public void CPC_007_SwapUnwind第二次部分平仓_入口必须将ClosePercent从A转为B()
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{
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// 模拟 GLMS-20260701-0006 第二次部分平仓
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var td = new trade
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{
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id = 2001,
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TradeNumber = "CPC-TEST-007",
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TradeType = "收益互换",
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TradeStatus = "确认成交",
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ValidState = "Valid",
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StockEqvNotional = (double)RemainingAfter1st, // 32,500,000
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OriginalStockEqvNotional = (double)OriginalNotional, // 50,000,000
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Notional = (double)RemainingAfter1st,
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TradeAmount = (double)RemainingAfter1st
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};
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var service = new TestableSwapDealService(td);
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// 前端传 ClosePercent = 0.325（口径A，占期初）
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var unwindData = new UnwindData
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{
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SwapTradeId = td.id,
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SwapRealizedPnL = 1000m,
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SwapCloseAmount = 1000m,
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CloseMethod = (int)CloseMethodEnum.部分平仓,
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ClosePercent = SecondClosePercentA, // 0.325（口径A）
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CloseQty = 16_250_000m,
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CloseNotionalValue = SecondCloseNotional, // 16,250,000
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PositionQty = RemainingAfter1st, // 32,500,000
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NotionalValue = OriginalNotional, // 50,000,000（期初）
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PosiNotionalValue = RemainingAfter1st, // 32,500,000（剩余）
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ValueDate = new DateTime(2026, 7, 14),
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UnwindDate = new DateTime(2026, 7, 15),
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StartDate = new DateTime(2026, 7, 1)
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};
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service.SwapUnwind(unwindData);
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// 验证 SwapUnwind 被调用
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Assert.AreEqual(1, service.SaveSwapDealCalls.Count, "SwapUnwind 应调用 SaveSwapDeal");
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// 验证传给 SaveSwapDeal 的 ClosePercent 已转为口径B
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var savedData = service.SaveSwapDealCalls[0].data;
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decimal expectedB = SwapDealService.ToRemainingClosePercent(
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SecondClosePercentA, OriginalNotional, RemainingAfter1st);
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SwapDealTestFactory.AssertDecimalEqual(expectedB, savedData.ClosePercent, 1e-10m,
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"SwapUnwind 应将 ClosePercent 从口径A(0.325)转为口径B(0.50)");
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// 口径B 不等于口径A（验证转换确实发生了）
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Assert.AreNotEqual(SecondClosePercentA, savedData.ClosePercent,
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"口径B(0.50) 不应等于口径A(0.325)，否则说明转换缺失");
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Console.WriteLine($"SwapUnwind: 输入A={SecondClosePercentA} → 输出B={savedData.ClosePercent} ✅");
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}
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// ================================================================
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// 契约8：完整多步场景——3次平仓合计应等于期初本金
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// 首次35%(A) → 第二次平剩余50%(A=0.325) → 第三次全平剩余(A=0.325)
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// 合计 CloseNotionalValue = 17.5M + 16.25M + 16.25M = 50M = 原始本金
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// ================================================================
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[TestMethod]
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public void CPC_008_三次部分平仓合计本金必须等于期初名义本金()
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{
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decimal remaining = OriginalNotional; // 50,000,000
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decimal totalClosed = 0m;
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// Step1: 平 35%（首次，remaining == original, A = B = 0.35）
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decimal step1A = 0.35m;
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decimal step1Notional = step1A * OriginalNotional; // 17,500,000
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totalClosed += step1Notional;
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remaining -= step1Notional; // 32,500,000
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// Step2: 平剩余的 50% → A = 16,250,000 / 50,000,000 = 0.325
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decimal step2Notional = 16_250_000m;
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decimal step2A = step2Notional / OriginalNotional; // 0.325
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// 后端 A→B 转换
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decimal step2B = SwapDealService.ToRemainingClosePercent(
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step2A, OriginalNotional, remaining);
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SwapDealTestFactory.AssertDecimalEqual(0.50m, step2B, 1e-10m,
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"Step2: A=0.325 → B=0.50（平剩余50%）");
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totalClosed += step2Notional;
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remaining -= step2Notional; // 16,250,000
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// Step3: 全平剩余 → A = 16,250,000 / 50,000,000 = 0.325
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decimal step3Notional = remaining;
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decimal step3A = step3Notional / OriginalNotional; // 0.325
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decimal step3B = SwapDealService.ToRemainingClosePercent(
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step3A, OriginalNotional, remaining);
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SwapDealTestFactory.AssertDecimalEqual(1.0m, step3B, 1e-10m,
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"Step3: A=0.325 → B=1.0（全平剩余）");
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totalClosed += step3Notional;
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remaining -= step3Notional; // 0
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// 守恒：合计 = 期初
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SwapDealTestFactory.AssertDecimalEqual(OriginalNotional, totalClosed, 1e-6m,
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"三次平仓合计必须 = 期初名义本金 50,000,000");
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SwapDealTestFactory.AssertDecimalEqual(0m, remaining, 1e-6m,
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"三次平仓后剩余必须 = 0");
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Console.WriteLine($"Step1: A=0.35, Notional=17,500,000");
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Console.WriteLine($"Step2: A=0.325→B=0.50, Notional=16,250,000");
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Console.WriteLine($"Step3: A=0.325→B=1.00, Notional=16,250,000");
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Console.WriteLine($"合计={totalClosed} = 期初{OriginalNotional} ✅");
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}
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// ================================================================
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// 契约9：GetUnwindInterestList 必须接收 notionalValue 和 posiNotionalValue
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// 前端 getInterestList 传这两个参数给后端做 A→B 转换
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// 如果前端删掉这两个参数，后端 ToRemainingClosePercent 在 posiNotionalValue=0 时会跳过转换
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// ================================================================
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[TestMethod]
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public void CPC_009_ToRemainingClosePercent_PosiNotionalValue为零时跳过转换_前端必须传值()
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{
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// 模拟前端不传 notionalValue/posiNotionalValue（默认0）
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decimal result = SwapDealService.ToRemainingClosePercent(
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SecondClosePercentA, notionalValue: 0, posiNotionalValue: 0);
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// posiNotionalValue <= 0 时直接返回原值（不转换）
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SwapDealTestFactory.AssertDecimalEqual(SecondClosePercentA, result, 1e-10m,
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"posiNotionalValue=0 时不做转换——所以前端必须传 notionalValue/posiNotionalValue");
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// 正确：前端传值后转换正常
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decimal resultWithValues = SwapDealService.ToRemainingClosePercent(
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SecondClosePercentA, OriginalNotional, RemainingAfter1st);
|
||
SwapDealTestFactory.AssertDecimalEqual(SecondClosePercentB, resultWithValues, 1e-10m,
|
||
"前端传值后：A=0.325 → B=0.50 ✅");
|
||
|
||
// 两者必须不同
|
||
Assert.AreNotEqual(result, resultWithValues,
|
||
"传 vs 不传 notionalValue 结果不同——前端必须传，否则利息计算用错口径");
|
||
|
||
Console.WriteLine($"不传值(默认0)：{result}（未转换，错误地用A算利息）");
|
||
Console.WriteLine($"传值：{resultWithValues}（正确转换为B）");
|
||
}
|
||
|
||
// ================================================================
|
||
// 契约10：首次平仓 A==B（退化场景，不应误报）
|
||
// 首次平仓时 NotionalValue == PosiNotionalValue，A=B，转换系数=1
|
||
// 这是既有测试全绿的原因——必须用非退化场景才能捕获回归
|
||
// ================================================================
|
||
[TestMethod]
|
||
public void CPC_010_首次平仓A等于B_退化场景_不能作为唯一测试()
|
||
{
|
||
decimal closePercentA = 0.35m;
|
||
decimal firstRemaining = OriginalNotional; // 首次 remaining == original
|
||
|
||
decimal convertedB = SwapDealService.ToRemainingClosePercent(
|
||
closePercentA, OriginalNotional, firstRemaining);
|
||
|
||
// 首次平仓：A == B（转换系数 = 1）
|
||
SwapDealTestFactory.AssertDecimalEqual(closePercentA, convertedB, 1e-10m,
|
||
"首次平仓 remaining==original → A==B==0.35（退化场景）");
|
||
|
||
// 退化场景下即使不做转换结果也一样——这就是既有测试全绿的原因
|
||
decimal noConversion = closePercentA;
|
||
Assert.AreEqual(noConversion, convertedB,
|
||
"退化场景：做不做转换结果一样 → 无法发现'转换缺失'的bug");
|
||
|
||
Console.WriteLine($"⚠ 退化场景：A={closePercentA} == B={convertedB}（首次平仓，无法暴露双重转换bug）");
|
||
Console.WriteLine($"✅ 非退化场景见 CPC_005/007：A=0.325 ≠ B=0.50（多次部分平仓后才能暴露）");
|
||
}
|
||
|
||
[TestMethod]
|
||
public void CPC_011_日期刷新基线后_部分平仓数量必须按原比例重算()
|
||
{
|
||
var directory = new DirectoryInfo(AppContext.BaseDirectory);
|
||
string source = null;
|
||
while (directory != null && source == null)
|
||
{
|
||
var path = Path.Combine(directory.FullName, "YLErpWeb", "wwwroot", "Scripts", "app", "swaptrade", "unwindSwapTrade.js");
|
||
if (File.Exists(path))
|
||
{
|
||
source = File.ReadAllText(path);
|
||
}
|
||
directory = directory.Parent;
|
||
}
|
||
|
||
Assert.IsNotNull(source, "未找到 unwindSwapTrade.js");
|
||
var refreshStart = source.IndexOf("refreshUnwindBaseline() {//", StringComparison.Ordinal);
|
||
var refreshEnd = source.IndexOf("getInterestList() {//", refreshStart, StringComparison.Ordinal);
|
||
var refreshMethod = source.Substring(refreshStart, refreshEnd - refreshStart);
|
||
var oriClosePercentIndex = refreshMethod.IndexOf("thisObj.oriClosePercent =", StringComparison.Ordinal);
|
||
var recalcCloseQtyIndex = refreshMethod.IndexOf(
|
||
"thisObj.deal.CloseQty = thisObj.calcCloseQtyByPercent(thisObj.deal.ClosePercent);",
|
||
StringComparison.Ordinal);
|
||
|
||
Assert.IsTrue(recalcCloseQtyIndex > oriClosePercentIndex,
|
||
"日期刷新并更新最多可平比例后，部分平仓数量必须按保留的平仓比例重新计算。");
|
||
}
|
||
}
|
||
}
|