146 lines
7.1 KiB
JavaScript
146 lines
7.1 KiB
JavaScript
/**
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* unwindBondCalc.test.js — 平仓页 DP↔YD 两字段互算纯函数（EQD-6953）
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* ============================================================================
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* 冻结三条与录入页不同、极易被"顺手统一"改坏的约定：
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* 1. 发计算器的价格是【展示态直传】，不 ×100（录入页是存储态 ×100）；
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* 2. ExitYtm 保留 4 位、四舍五入(AwayFromZero)——结算确认书导出固定 4 位不去零，
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* 界面精度不得低于导出要求；
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* 3. 失败只清【对方】字段（平仓页无净价列，仅 DP/YD 两字段）。
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*
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* 运行：cd YLErpWeb/fe-tests && npx jest unwindBondCalc
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*/
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const UnwindBondCalc = require('../wwwroot/Scripts/app/swaptrade/unwindBondCalc.js');
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const CALC = { cleanPrice: 98.5, dirtyPrice: 99.5, ytm: 6.3721 };
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describe('getCalcRequest：展示态直传，不做录入页的 ×100 换算', () => {
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test('DP 回车：price 原样 99.5（若误加 ×100 会变成 9950），priceType=DP，估值日=平仓日', () => {
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const req = UnwindBondCalc.getCalcRequest('240004.IB', 99.5, 'DP', '2026-08-20');
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expect(req.price).toBe(99.5);
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expect(req.priceType).toBe('DP');
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expect(req.targetDate).toBe('2026-08-20');
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expect(req.underlyingCode).toBe('240004.IB');
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expect(req.source).toBe('unwind');
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});
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test('YD 回车：收益率展示态直传（6.3721 而非 0.063721）', () => {
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const req = UnwindBondCalc.getCalcRequest('240004.IB', 6.3721, 'YD', '2026-08-20');
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expect(req.price).toBe(6.3721);
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expect(req.priceType).toBe('YD');
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});
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test('估值日为空时 targetDate 为 null（兜底，调用方应先校验）', () => {
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const req = UnwindBondCalc.getCalcRequest('240004.IB', 99.5, 'DP', null);
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expect(req.targetDate).toBeNull();
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});
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});
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describe('roundExitYtm：4 位小数、四舍五入(远离零)', () => {
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test('第 5 位进位', () => {
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expect(UnwindBondCalc.roundExitYtm(6.37215)).toBe(6.3722);
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});
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test('第 5 位舍去', () => {
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expect(UnwindBondCalc.roundExitYtm(6.37214)).toBe(6.3721);
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});
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test('负收益率同样远离零（负利率债）', () => {
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expect(UnwindBondCalc.roundExitYtm(-0.00005)).toBe(-0.0001);
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expect(UnwindBondCalc.roundExitYtm(-1.23445)).toBe(-1.2345);
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});
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});
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describe('applyCalcResult：源字段保持、仅回写对方字段', () => {
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test('DP 为源：TradingAmountAvg 保持手输值，ExitYtm 被反算覆盖(4位)', () => {
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const state = { TradingAmountAvg: 100.123456, ExitYtm: null };
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UnwindBondCalc.applyCalcResult(state, { ytm: 6.37215 }, 'DP');
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expect(state.TradingAmountAvg).toBe(100.123456); // 源：保持
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expect(state.ExitYtm).toBe(6.3722); // 对方：反算+4位取整
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});
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test('YD 为源：ExitYtm 保持手输值，TradingAmountAvg 被反算覆盖(展示态直写)', () => {
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const state = { TradingAmountAvg: null, ExitYtm: 6.3721 };
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UnwindBondCalc.applyCalcResult(state, { dirtyPrice: 99.5023 }, 'YD');
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expect(state.ExitYtm).toBe(6.3721); // 源：保持
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expect(state.TradingAmountAvg).toBe(99.5023); // 对方：直写（不 ÷100）
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});
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test('计算器未返回对方值时不覆盖（保留手工输入）', () => {
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const state = { TradingAmountAvg: 100.5, ExitYtm: 6.3 };
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UnwindBondCalc.applyCalcResult(state, { ytm: null }, 'DP');
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expect(state.ExitYtm).toBe(6.3);
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UnwindBondCalc.applyCalcResult(state, { dirtyPrice: undefined }, 'YD');
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expect(state.TradingAmountAvg).toBe(100.5);
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});
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test('回写值与现值相同（<1e-9）时不写，避免光标跳动', () => {
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const state = { TradingAmountAvg: 100, ExitYtm: 6.3721 };
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UnwindBondCalc.applyCalcResult(state, { ytm: 6.3721 }, 'DP');
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expect(state.ExitYtm).toBe(6.3721);
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});
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});
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describe('applyCalcFailure：保留源字段、只清对方字段、标识全清', () => {
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test('DP 为源失败：ExitYtm 清空、全价保留', () => {
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const state = { TradingAmountAvg: 100.5, ExitYtm: 6.3, bondDriverType: 'DP', bondAuto: { DP: true, YD: false } };
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UnwindBondCalc.applyCalcFailure(state, 'DP');
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expect(state.TradingAmountAvg).toBe(100.5);
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expect(state.ExitYtm).toBeNull();
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expect(state.bondDriverType).toBeNull();
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expect(state.bondAuto).toEqual({ DP: false, YD: false });
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expect(state.bondRev).toEqual({ DP: false, YD: false });
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});
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test('YD 为源失败：TradingAmountAvg 清空、收益率保留', () => {
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const state = { TradingAmountAvg: 100.5, ExitYtm: 6.3, bondDriverType: 'YD' };
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UnwindBondCalc.applyCalcFailure(state, 'YD');
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expect(state.ExitYtm).toBe(6.3);
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expect(state.TradingAmountAvg).toBeNull();
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});
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test('driver 非法(null)：仅清标识、不动任何数值（setValueDate 清陈旧标识场景的防误清守卫）', () => {
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const state = { TradingAmountAvg: 100.5, ExitYtm: 6.3, bondDriverType: 'DP', bondAuto: { DP: false, YD: true } };
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UnwindBondCalc.applyCalcFailure(state, null);
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expect(state.TradingAmountAvg).toBe(100.5); // 绝不能被清
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expect(state.ExitYtm).toBe(6.3);
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expect(state.bondDriverType).toBeNull();
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expect(state.bondAuto).toEqual({ DP: false, YD: false });
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});
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});
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describe('标识状态机（交互约定2/3，对齐录入页）', () => {
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test('成功：源字段标源、对方标 AUTO、REV 清空', () => {
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const state = { TradingAmountAvg: 100.5, ExitYtm: null };
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UnwindBondCalc.applyCalcSuccess(state, 'DP');
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expect(state.bondDriverType).toBe('DP');
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expect(state.bondAuto).toEqual({ DP: false, YD: true });
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expect(state.bondRev).toEqual({ DP: false, YD: false });
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});
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test('手动编辑未回车：清 源/AUTO、本字段累计 REV、不清对方 REV', () => {
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const state = { TradingAmountAvg: 100.5, ExitYtm: 6.3, bondRev: { DP: true, YD: false } };
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UnwindBondCalc.applyManualEdit(state, 'YD');
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expect(state.bondDriverType).toBeNull();
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expect(state.bondAuto).toEqual({ DP: false, YD: false });
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expect(state.bondRev).toEqual({ DP: true, YD: true }); // 累计：DP 的 REV 保留
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});
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test('bondRev 缺失时自动初始化', () => {
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const state = {};
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UnwindBondCalc.applyManualEdit(state, 'DP');
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expect(state.bondRev).toEqual({ DP: true, YD: false });
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});
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});
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describe('FIELDS 映射与 hasValue 守卫', () => {
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test('字段映射', () => {
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expect(UnwindBondCalc.FIELDS).toEqual({ DP: 'TradingAmountAvg', YD: 'ExitYtm' });
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});
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test('hasValue：空串/null/undefined/NaN 为 false，0 为 true', () => {
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expect(UnwindBondCalc.hasValue('')).toBe(false);
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expect(UnwindBondCalc.hasValue(null)).toBe(false);
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expect(UnwindBondCalc.hasValue(undefined)).toBe(false);
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expect(UnwindBondCalc.hasValue(NaN)).toBe(false);
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expect(UnwindBondCalc.hasValue(0)).toBe(true);
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expect(UnwindBondCalc.hasValue('6.37')).toBe(true);
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});
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});
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