Files
autofirmer-expanded/scripts/check-trading-logic.mjs
T
Brandon LiandClaude Opus 5.5 1782c16145 Sizing: the broker's largest and smallest order bind the leg's size
fireLeg clamped the order to the instrument's max and min size, but the
size the pick ranked by (and the Firms page shows) didn't: an instrument
whose largest order falls short of the ideal notional ranked on a hold it
can't reach. planLegSize now holds the notional to the margin cap and the
broker's largest order, then its smallest, so the ranking, the stats and
the trade agree.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-09-27 13:59:27 -05:00

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// Checks for the pure trading math in lib/trading-logic.ts.
//
// npm run check
//
// .mjs on purpose: Next's tsconfig includes every .ts file, and a .ts test
// importing another .ts by extension would trip the build's type check. Node
// strips the types from lib/trading-logic.ts at import time (it has no
// imports of its own).
import { test } from 'node:test';
import assert from 'node:assert/strict';
import {
percentFee, takeProfitPlan, obfuscationStopDollars, dllRoom, dllStopDollars, dllViable, stopTicks,
botStopsActive, sizeNotional, isNoTradeTime, isPastSessionClose, nextTradingDate, effectiveCombine, DEFAULT_TARGET_HOLD_HOURS,
projectPerfectPath, cycleCompletion, DLL_RESERVE_FRACTION, DLL_MIN_STOP, notionalCap, expectedSwapToWin, MARGIN_HEADROOM,
dllReserve, DLL_SLIPPAGE_FRACTION, maxLossRoom, lastStand, breachDistance, LAST_STAND_FRACTION, planLegSize, rankForTarget,
currentTradeDateCT,
} from '../lib/trading-logic.ts';
// Deterministic PRNG so a failure reproduces.
function rng(seed) {
let s = seed >>> 0;
return () => {
s = (s + 0x6d2b79f5) >>> 0;
let t = s;
t = Math.imul(t ^ (t >>> 15), t | 1);
t ^= t + Math.imul(t ^ (t >>> 7), t | 61);
return ((t ^ (t >>> 14)) >>> 0) / 4294967296;
};
}
// ── parity with the pre-refactor inline code ────────────────────────────────
/** The take-profit exactly as auto-trade.ts computed it before takeProfitPlan. */
function oldTakeProfit(side, entry, leg, pv, contracts, tickSize, entryCommission) {
const totalCommission = entryCommission * 2;
const grossTarget = leg + totalCommission;
const targetPoints = grossTarget / (pv * contracts);
const ticks = Math.ceil(targetPoints / tickSize);
const exitPrice = side === 'Buy' ? entry + ticks * tickSize : entry - ticks * tickSize;
return { exitPrice, ticks, totalCommission, grossTarget };
}
test('takeProfitPlan reproduces the old formula when fees are measured', () => {
const r = rng(1);
for (let i = 0; i < 2000; i++) {
const side = r() < 0.5 ? 'Buy' : 'Sell';
const [pv, tick] = [[20, 0.25], [2, 0.25], [100, 0.1], [1000, 0.01], [50, 0.25]][Math.floor(r() * 5)];
const entry = Math.round((1000 + r() * 20000) / tick) * tick;
const leg = Math.round(5 + r() * 2500);
const contracts = 1 + Math.floor(r() * 4);
const fee = Math.round(r() * 1000) / 100;
const got = takeProfitPlan({ side, entry, leg, pointValue: pv, contracts, tickSize: tick, commissionPct: 0, entryCommission: fee });
const want = oldTakeProfit(side, entry, leg, pv, contracts, tick, fee);
assert.equal(got.exitPrice, want.exitPrice);
assert.equal(got.ticks, want.ticks);
assert.equal(got.totalCommission, want.totalCommission);
assert.equal(got.grossTarget, want.grossTarget);
}
});
/** obfuscationStopDollars exactly as it lived in auto-trade.ts. */
function oldObfuscation(cfg, dailyPnL, plan, tradeDate, legAmount) {
if (!cfg.firstDayStop && !cfg.minDayStop) return Infinity;
const prior = dailyPnL.filter((d) => d.date < tradeDate && d.pnl !== 0).sort((a, b) => a.date.localeCompare(b.date));
if (prior.length > 0 && prior[prior.length - 1].pnl < 0) return Infinity;
let stop = Infinity;
const realizedToday = Math.round((plan.dayTarget - plan.remainingToday) * 100) / 100;
if (cfg.firstDayStop && prior.length === 0) stop = Math.max(0, 1000 + realizedToday);
if (cfg.minDayStop && plan.dayTarget <= 1700) stop = Math.min(stop, 2 * legAmount);
return stop;
}
test('obfuscationStopDollars is unchanged by the move', () => {
const r = rng(2);
for (let i = 0; i < 1000; i++) {
const cfg = { firstDayStop: r() < 0.5, minDayStop: r() < 0.5 };
const days = Math.floor(r() * 4);
const dailyPnL = Array.from({ length: days }, (_, d) => ({ date: `2026-09-0${d + 1}`, pnl: Math.round((r() - 0.4) * 2000) }));
const dayTarget = Math.round(r() * 3000);
const plan = { dayTarget, remainingToday: Math.round(dayTarget * r()), path: 'normal_day', splitAllowed: true };
const leg = Math.round(100 + r() * 1500);
assert.equal(obfuscationStopDollars(cfg, dailyPnL, plan, '2026-09-08', leg), oldObfuscation(cfg, dailyPnL, plan, '2026-09-08', leg));
}
});
/** isInNoTradeWindow as it was, with the clock and settings passed in. */
function oldNoTrade(now, mode, jitter) {
const centralParts = new Intl.DateTimeFormat('en-US', { hour: 'numeric', minute: 'numeric', hour12: false, timeZone: 'America/Chicago' }).formatToParts(now);
const hour = parseInt(centralParts.find((p) => p.type === 'hour').value, 10);
const minute = parseInt(centralParts.find((p) => p.type === 'minute').value, 10);
const day = new Intl.DateTimeFormat('en-US', { weekday: 'short', timeZone: 'America/Chicago' }).format(now);
const timeMinutes = hour * 60 + minute;
if (mode === 'equity_hours') {
if (day === 'Sat' || day === 'Sun') return true;
const open = 8 * 60 + 35 + jitter;
const close = 14 * 60 + 55;
return timeMinutes < open || timeMinutes >= close;
}
if (day === 'Sat') return true;
const cmeOpen = 17 * 60 + 5 + jitter;
if (day === 'Sun') return timeMinutes < cmeOpen;
const cmeClose = 14 * 60 + 55;
if (day === 'Fri' && timeMinutes >= cmeClose) return true;
if (timeMinutes >= cmeClose && timeMinutes < cmeOpen) return true;
return false;
}
function oldAfterClose(now) {
const parts = new Intl.DateTimeFormat('en-US', { weekday: 'short', hour: 'numeric', minute: 'numeric', hour12: false, timeZone: 'America/Chicago' }).formatToParts(now);
const get = (type) => parts.find((p) => p.type === type)?.value ?? '';
if (get('weekday') === 'Sat' || get('weekday') === 'Sun') return false;
const minutes = (parseInt(get('hour'), 10) % 24) * 60 + parseInt(get('minute'), 10);
return minutes >= 14 * 60 + 55 && minutes < 17 * 60;
}
test('CME trading hours are unchanged, across both DST regimes', () => {
for (const start of [Date.UTC(2026, 8, 20), Date.UTC(2026, 0, 11)]) { // a September and a January week
for (let m = 0; m < 7 * 24 * 60; m += 7) {
const now = new Date(start + m * 60_000);
for (const mode of ['full_cme', 'equity_hours']) {
for (const jitter of [1, 13, 20]) {
assert.equal(isNoTradeTime(now, { everyDay: false, mode, jitterMin: jitter }), oldNoTrade(now, mode, jitter), `${now.toISOString()} ${mode} ${jitter}`);
}
}
assert.equal(isPastSessionClose(now, false), oldAfterClose(now), now.toISOString());
}
}
});
// ── every-day hours ──────────────────────────────────────────────────────────
const ct = (iso, offsetHours) => new Date(Date.parse(`${iso}Z`) + offsetHours * 3600_000);
const cdt = (iso) => ct(iso, 5); // Central daylight: UTC−5
const cst = (iso) => ct(iso, 6); // Central standard: UTC−6
test('every-day firms close only around the roll (CDT)', () => {
const o = { everyDay: true, mode: 'full_cme', jitterMin: 7 };
assert.equal(isNoTradeTime(cdt('2026-09-26T12:00:00'), o), false); // Saturday noon
assert.equal(isNoTradeTime(cdt('2026-09-27T09:00:00'), o), false); // Sunday morning
assert.equal(isNoTradeTime(cdt('2026-09-28T16:54:00'), o), false);
assert.equal(isNoTradeTime(cdt('2026-09-28T16:55:00'), o), true);
assert.equal(isNoTradeTime(cdt('2026-09-28T17:11:00'), o), true);
assert.equal(isNoTradeTime(cdt('2026-09-28T17:12:00'), o), false);
assert.equal(isPastSessionClose(cdt('2026-09-26T16:56:00'), true), true);
assert.equal(isPastSessionClose(cdt('2026-09-26T17:01:00'), true), false);
});
test('every-day firms close from 3:55 PM in CST, covering the 4 PM firm reset', () => {
const o = { everyDay: true, mode: 'equity_hours', jitterMin: 1 };
assert.equal(isNoTradeTime(cst('2027-01-12T15:54:00'), o), false);
assert.equal(isNoTradeTime(cst('2027-01-12T15:55:00'), o), true);
assert.equal(isNoTradeTime(cst('2027-01-12T16:30:00'), o), true);
assert.equal(isNoTradeTime(cst('2027-01-12T17:05:00'), o), true);
assert.equal(isNoTradeTime(cst('2027-01-12T17:06:00'), o), false);
assert.equal(isNoTradeTime(cst('2027-01-16T12:00:00'), o), false); // Saturday
assert.equal(isPastSessionClose(cst('2027-01-12T16:10:00'), true), true);
});
// ── fees ─────────────────────────────────────────────────────────────────────
test('percentFee rounds each side up to the cent', () => {
assert.equal(percentFee(0.04, 60000, 1, 1), 24);
assert.equal(percentFee(0.04, 100000, 0.2, 1), 8);
assert.equal(percentFee(0.04, 123.45, 0.001, 7), 0.01); // 0.00035 → a cent
assert.equal(percentFee(0, 60000, 1, 1), 0);
});
test('percent-fee take-profits net at least the leg, and one tick less does not', () => {
const r = rng(3);
for (let i = 0; i < 3000; i++) {
const side = r() < 0.5 ? 'Buy' : 'Sell';
const tick = [0.01, 0.1, 0.5, 1][Math.floor(r() * 4)];
const entry = Math.round((50 + r() * 100000) / tick) * tick;
const step = [0.001, 0.01, 1][Math.floor(r() * 3)];
const contracts = 1 + Math.floor(r() * 400);
const pct = [0.04, 0.02, 0.1][Math.floor(r() * 3)];
const leg = Math.round(5 + r() * 2000);
const entryFee = percentFee(pct, entry, step, contracts);
const tp = takeProfitPlan({ side, entry, leg, pointValue: step, contracts, tickSize: tick, commissionPct: pct, entryCommission: entryFee });
const k = step * contracts;
const dir = side === 'Buy' ? 1 : -1;
const net = (ticks) => {
const x = entry + dir * ticks * tick;
return ticks * tick * k - entryFee - percentFee(pct, x, step, contracts);
};
assert.ok(net(tp.ticks) >= leg - 1e-6, `short of the leg: ${JSON.stringify({ side, entry, tick, step, contracts, pct, leg, tp })}`);
if (tp.ticks > 1) assert.ok(net(tp.ticks - 1) < leg + 0.02, `a tick further than needed: ${JSON.stringify(tp)}`);
assert.equal(tp.totalCommission, Math.round((entryFee + tp.exitFee) * 100) / 100);
}
});
// ── daily loss limit ─────────────────────────────────────────────────────────
test('dllRoom: snapshot, fallback, green-day cap, no limit', () => {
assert.equal(dllRoom({ dailyLossLimit: 0, closedBalance: 50000, realizedToday: -900 }), Infinity);
assert.equal(dllRoom({ dailyLossLimit: 1500, closedBalance: 49600, dayStartBalance: 50000, realizedToday: 0 }), 1100);
assert.equal(dllRoom({ dailyLossLimit: 1500, closedBalance: 50600, dayStartBalance: 50000, realizedToday: 0 }), 1500);
assert.equal(dllRoom({ dailyLossLimit: 1000, closedBalance: 50000, dayStartBalance: null, realizedToday: -200 }), 800);
assert.equal(dllRoom({ dailyLossLimit: 1000, closedBalance: 50000, realizedToday: 350 }), 1000);
});
test('the worked futures example: $1,000 limit, down $200, NQ at $2.14/side', () => {
const room = dllRoom({ dailyLossLimit: 1000, closedBalance: 49800, realizedToday: -200 });
const d = dllStopDollars({ room, dailyLossLimit: 1000, entryFee: 2.14, commissionPct: 0 });
const ticks = stopTicks({ obfuscationDollars: Infinity, dllDollars: d, pointValue: 20, contracts: 1, tickSize: 0.25 });
assert.equal(ticks, 139);
const loss = ticks * 0.25 * 20 + 2 * 2.14;
assert.ok(-200 - loss > -1000 + 100 - 1e-9);
});
test('stopTicks: obfuscation rounds out, the daily-loss stop rounds in, the tighter wins', () => {
const base = { pointValue: 20, contracts: 1, tickSize: 0.25 };
assert.equal(stopTicks({ ...base, obfuscationDollars: Infinity, dllDollars: Infinity }), null);
assert.equal(stopTicks({ ...base, obfuscationDollars: 0, dllDollars: Infinity }), null);
assert.equal(stopTicks({ ...base, obfuscationDollars: 1001, dllDollars: Infinity }), 201);
assert.equal(stopTicks({ ...base, obfuscationDollars: Infinity, dllDollars: 1000 }), 200);
assert.equal(stopTicks({ ...base, obfuscationDollars: Infinity, dllDollars: 999.99 }), 199);
assert.equal(stopTicks({ ...base, obfuscationDollars: 600, dllDollars: 1000 }), 120);
assert.equal(stopTicks({ ...base, obfuscationDollars: 1600, dllDollars: 1000 }), 200);
assert.equal(stopTicks({ ...base, obfuscationDollars: Infinity, dllDollars: 3 }), 0);
assert.equal(stopTicks({ ...base, obfuscationDollars: Infinity, dllDollars: -40 }), 0);
});
test('worst case at the stop, both fees paid, never spends past room − reserve', () => {
const r = rng(4);
for (let i = 0; i < 20000; i++) {
const side = r() < 0.5 ? 'Buy' : 'Sell';
const pctFirm = r() < 0.6;
const pct = pctFirm ? [0.04, 0.1][Math.floor(r() * 2)] : 0;
const tick = pctFirm ? [0.01, 0.1, 1][Math.floor(r() * 3)] : 0.25;
const pv = pctFirm ? [0.001, 0.01, 1][Math.floor(r() * 3)] : [2, 20, 50][Math.floor(r() * 3)];
const contracts = pctFirm ? 1 + Math.floor(r() * 500) : 1 + Math.floor(r() * 3);
const entry = Math.round((100 + r() * 90000) / tick) * tick;
const dll = [300, 750, 1500, 3000][Math.floor(r() * 4)];
const room = dllRoom({ dailyLossLimit: dll, closedBalance: 50000, dayStartBalance: 50000 + Math.round((r() - 0.3) * dll), realizedToday: 0 });
const entryFee = pctFirm ? percentFee(pct, entry, pv, contracts) : Math.round(r() * 500) / 100 * contracts;
const d = dllStopDollars({ room, dailyLossLimit: dll, entryFee, commissionPct: pct });
const ticks = stopTicks({ obfuscationDollars: Infinity, dllDollars: d, pointValue: pv, contracts, tickSize: tick });
if (ticks === 0) continue; // flattened instead
const stopPrice = side === 'Buy' ? entry - ticks * tick : entry + ticks * tick;
const exitFee = pctFirm ? percentFee(pct, stopPrice, pv, contracts) : entryFee;
const loss = ticks * tick * pv * contracts + entryFee + exitFee;
assert.ok(loss <= room - DLL_RESERVE_FRACTION * dll + 1e-6, JSON.stringify({ side, pct, tick, pv, contracts, entry, dll, room, ticks, loss }));
}
});
test('dllViable and botStopsActive', () => {
assert.equal(dllViable(Infinity, 0, 0), true);
assert.equal(dllViable(1500, 1500, 20), true);
assert.equal(dllViable(150 + DLL_MIN_STOP + 20, 1500, 20), true);
assert.equal(dllViable(150 + DLL_MIN_STOP + 19.99, 1500, 20), false);
assert.equal(botStopsActive({ firstDayStop: false, minDayStop: false }), false);
assert.equal(botStopsActive({ firstDayStop: false, minDayStop: false, dailyLossLimit: 1500 }), true);
assert.equal(botStopsActive({ firstDayStop: true, minDayStop: false, dailyLossLimit: 0 }), true);
});
// ── sizing ───────────────────────────────────────────────────────────────────
const btcSigma = 0.03 / Math.sqrt(24); // 3%/day
test('volatility sizing hits the target hold, and the example table', () => {
const stop = () => 1350;
const at = (hours) => sizeNotional({ leg: 600, stopDollarsAt: stop, volatilityPerHour: btcSigma, targetHoldHours: hours, commissionPct: 0, maxNotional: 0 });
for (const [hours, notional] of [[54, 20000], [24, 30000], [6, 60000]]) {
const s = at(hours);
assert.ok(Math.abs(s.notional - notional) / notional < 0.001, `${hours}h → ${s.notional}`);
assert.ok(Math.abs(s.predictedHoldHours - hours) / hours < 0.001);
assert.ok(Math.abs(s.winProbability - 1350 / 1950) < 1e-9);
}
});
test('sizing: fees feed back, the cap binds, financing only raises N, defaults', () => {
const base = { leg: 600, volatilityPerHour: btcSigma, targetHoldHours: 6, commissionPct: 0.04, spreadFraction: 0.0002, maxNotional: 0 };
// Daily-loss stop shrinks as fees grow with N.
const stopDollarsAt = (n) => dllStopDollars({ room: 1500, dailyLossLimit: 1500, entryFee: 0.0004 * n, commissionPct: 0.04 });
const s = sizeNotional({ ...base, stopDollarsAt });
const a = 600 + 2 * 0.0004 * s.notional;
const b = stopDollarsAt(s.notional);
assert.ok(Math.abs(s.predictedHoldHours - 6) < 0.05, `hold ${s.predictedHoldHours}`);
assert.ok(Math.abs(s.winProbability - b / (a + b)) < 1e-9);
const capped = sizeNotional({ ...base, stopDollarsAt, maxNotional: 25000 });
assert.equal(capped.notional, 25000);
assert.ok(capped.predictedHoldHours > 6);
const financed = sizeNotional({ ...base, stopDollarsAt, targetHoldHours: 200, financingPctPerDay: 0.033 });
const unfinanced = sizeNotional({ ...base, stopDollarsAt, targetHoldHours: 200 });
assert.ok(financed.notional > unfinanced.notional);
// No target hold = 12 h.
const dflt = sizeNotional({ ...base, targetHoldHours: 0, stopDollarsAt });
assert.ok(Math.abs(dflt.predictedHoldHours - DEFAULT_TARGET_HOLD_HOURS) < 0.1, `hold ${dflt.predictedHoldHours}`);
// A stopless leg is sized as if the stop sat as far as the target.
const stopless = sizeNotional({ ...base, stopDollarsAt: () => Infinity });
assert.ok(Math.abs(stopless.predictedHoldHours - 6) < 0.05);
assert.equal(stopless.winProbability, null);
// No volatility, no size.
assert.equal(sizeNotional({ ...base, volatilityPerHour: undefined, stopDollarsAt }), null);
});
test('random-walk simulation agrees with the predicted hold and win rate', () => {
const r = rng(5);
const notional = 60000;
const A = 600;
const B = 1350;
const sigma = btcSigma;
const dtHours = 1 / 60; // one-minute steps
const stepDollars = notional * sigma * Math.sqrt(dtHours);
const predicted = (A / notional) * (B / notional) / (sigma * sigma);
let wins = 0;
let totalHours = 0;
let winHours = 0;
const paths = 3000;
for (let p = 0; p < paths; p++) {
let x = 0;
let steps = 0;
while (x < A && x > -B) {
x += r() < 0.5 ? stepDollars : -stepDollars;
steps++;
}
if (x >= A) { wins++; winHours += steps * dtHours; }
totalHours += steps * dtHours;
}
const meanHold = totalHours / paths;
assert.ok(Math.abs(meanHold - predicted) / predicted < 0.1, `mean hold ${meanHold} vs predicted ${predicted}`);
assert.ok(Math.abs(wins / paths - B / (A + B)) < 0.03, `win rate ${wins / paths}`);
// Winners take longer than the average leg: (A² + 2AB) / 3σ$² — what
// expectedSwapToWin charges swap over.
const predictedWin = (A * A + 2 * A * B) / (3 * (notional * sigma) ** 2);
assert.ok(Math.abs(winHours / wins - predictedWin) / predictedWin < 0.1, `winners ${winHours / wins}h vs ${predictedWin}h`);
});
test('expected swap to win: a fixed point over the winners\' hold, zero without swap, capped', () => {
const sigma = 0.022 / Math.sqrt(24); // ETH over a week, ~2.2%/day
const o = { distance: 12400, stopDollars: 2300, notional: 200000, volatilityPerHour: sigma, financingPctPerDay: 0.033 };
const swap = expectedSwapToWin(o);
const a = o.distance + swap;
const b = o.stopDollars;
const winHours = (a * a + 2 * a * b) / (3 * (o.notional * sigma) ** 2);
assert.ok(Math.abs(swap - 0.00033 * o.notional * (winHours / 24)) < 0.02, `swap ${swap} over ${winHours}h`);
assert.ok(swap > 200 && swap < 400, `swap ${swap}`);
// Quieter means a longer hold and more swap; none without a rate or σ.
assert.ok(expectedSwapToWin({ ...o, volatilityPerHour: sigma * 0.6 }) > swap);
assert.equal(expectedSwapToWin({ ...o, financingPctPerDay: 0 }), 0);
assert.equal(expectedSwapToWin({ ...o, volatilityPerHour: undefined }), 0);
// Stopless reads as B = A: a longer walk than with the stop.
assert.ok(expectedSwapToWin({ ...o, stopDollars: Infinity }) > swap);
// A leg that can barely move is capped at a quarter of its distance.
assert.equal(expectedSwapToWin({ ...o, volatilityPerHour: sigma / 50 }), 3100);
});
test('the notional cap: what the available funds can margin at the symbol\'s rate', () => {
assert.equal(notionalCap({ marginRate: 0.2, availableFunds: 100000 }), MARGIN_HEADROOM * 500000);
assert.equal(notionalCap({ marginRate: 0.5, availableFunds: 99757.39 }), MARGIN_HEADROOM * 99757.39 * 2);
assert.equal(notionalCap({ marginRate: 0.2, availableFunds: undefined }), 0);
assert.equal(notionalCap({ availableFunds: 100000 }), 0);
});
test('the daily-loss reserve grows with the position past 10% of the limit', () => {
assert.equal(dllReserve(3000), 300);
assert.equal(dllReserve(3000, 200000), 300);
assert.equal(dllReserve(3000, 485000), 485000 * DLL_SLIPPAGE_FRACTION);
const at = (notional) => dllStopDollars({ room: 3000, dailyLossLimit: 3000, entryFee: 0.0004 * notional, commissionPct: 0.04, notional });
// Below $300k the flat 10% binds; above, 0.1% of notional does.
assert.ok(Math.abs(at(200000) - (3000 - 300 - 160 - 0.01) / 1.0004) < 1e-9);
assert.ok(Math.abs(at(485000) - (3000 - 485 - 388 - 0.01) / 1.0004) < 1e-9);
// No notional given: the old flat reserve.
assert.equal(dllStopDollars({ room: 3000, dailyLossLimit: 3000, entryFee: 0, commissionPct: 0 }), 2699.99);
});
test('max-drawdown room: the static floor, the broker floor, the higher', () => {
assert.equal(maxLossRoom({ balance: 99757.39, accountSize: 100000, maxLoss: 6000 }), 5757.39);
assert.equal(maxLossRoom({ balance: 99757.39, accountSize: 100000, maxLoss: -6000 }), 5757.39);
assert.equal(maxLossRoom({ balance: 51000, accountSize: 50000, maxLoss: 0, autoLiqThreshold: 48500 }), 2500);
assert.equal(maxLossRoom({ balance: 51000, accountSize: 50000, maxLoss: 2000, autoLiqThreshold: 49000 }), 2000);
assert.equal(maxLossRoom({ balance: 99000, accountSize: 100000, maxLoss: 0 }), null);
});
test('last stand: no daily-loss stop once hitting the daily limit would leave 15% of it or less', () => {
// A full day's $3,000 of room.
const at = (maxRoom) => lastStand({ dllRoom: 3000, dailyLossLimit: 3000, maxLossRoom: maxRoom });
assert.equal(LAST_STAND_FRACTION, 0.15);
assert.equal(at(5757.39), false, 'a fresh 1-Step keeps its stop');
assert.equal(at(3000 * 1.15 + 1), false, 'just over 15% left: keep the stop');
assert.equal(at(3000 * 1.15), true, '15% left: last stand');
assert.equal(at(3294.70), true, 'one stopped day in: $294.70 left, 9.8% — last stand');
assert.equal(at(800), true, 'floor nearer than the limit: last stand');
assert.equal(at(null), false, 'no floor known');
// Measured against what's left of the day: $1,000 of room, $1,200 to the floor.
assert.equal(lastStand({ dllRoom: 1000, dailyLossLimit: 3000, maxLossRoom: 1200 }), false);
assert.equal(lastStand({ dllRoom: 1000, dailyLossLimit: 3000, maxLossRoom: 1150 }), true);
assert.equal(lastStand({ dllRoom: Infinity, dailyLossLimit: 0, maxLossRoom: 500 }), false, 'no daily limit, no daily stop to drop');
// The far side of the walk is the nearer floor, net of the entry fee.
assert.equal(breachDistance({ dllRoom: 3000, maxLossRoom: 2900, entryFee: 120 }), 2780);
assert.equal(breachDistance({ dllRoom: 2757.39, maxLossRoom: null, entryFee: 0 }), 2757.39);
});
test('planLegSize: the stop, a last stand, the margin cap and the cost, as fireLeg trades', () => {
const eth = { stepNotional: 26.86, volatilityPerHour: 0.022 / Math.sqrt(24), spreadFraction: 0.00004, marginRate: 0.2 };
const base = {
leg: 12239, contract: eth, commissionPct: 0.04, targetHoldHours: 12, financingPctPerDay: 0.033,
dailyLossLimit: 3000, dllRoom: 2757.39, obfuscationDollars: Infinity, availableFunds: 99757.39,
};
const fresh = planLegSize({ ...base, maxLossRoom: 5757.39 });
assert.equal(fresh.lastStand, false);
assert.ok(Math.abs(fresh.sizing.predictedHoldHours - 12) < 0.1, `hold ${fresh.sizing.predictedHoldHours}`);
const n = fresh.sizing.notional;
assert.ok(Math.abs(fresh.walkAt(n) - dllStopDollars({ room: 2757.39, dailyLossLimit: 3000, entryFee: 0.0004 * n, commissionPct: 0.04, notional: n })) < 1e-9);
const expectCost = n * (0.00004 + 0.0008) + 0.00033 * n * (fresh.sizing.predictedHoldHours / 24);
assert.ok(Math.abs(fresh.cost - expectCost) < 1e-6);
// Two days stopped out: a stop-out would leave ~$300 above the floor.
const stand = planLegSize({ ...base, dllRoom: 3000, maxLossRoom: 3000 });
assert.equal(stand.lastStand, true);
assert.equal(stand.walkAt(300000), 3000 - 120);
assert.ok(stand.sizing.winProbability > fresh.sizing.winProbability, 'the whole room, no reserve: a better chance');
// An obfuscation stop still counts on a last stand.
assert.equal(planLegSize({ ...base, dllRoom: 3000, maxLossRoom: 3000, obfuscationDollars: 1000 }).walkAt(300000), 1000);
// A 2:1 stock can't reach 12 h in a quiet market: the cap binds.
const stock = planLegSize({ ...base, maxLossRoom: 5757.39, contract: { ...eth, marginRate: 0.5, volatilityPerHour: 0.0076 / Math.sqrt(24) } });
assert.ok(Math.abs(stock.sizing.notional - stock.cap) < 1e-6);
assert.ok(stock.sizing.predictedHoldHours > 12);
// Futures (no stepNotional) aren't sized by notional.
assert.equal(planLegSize({ ...base, maxLossRoom: null, contract: {} }).sizing, null);
});
test('planLegSize: the broker\'s order size limits bind the sizing, so the pick sees the real hold', () => {
const eth = { stepNotional: 26.86, volatilityPerHour: 0.022 / Math.sqrt(24), spreadFraction: 0.00004, marginRate: 0.2 };
const base = {
leg: 12239, contract: eth, commissionPct: 0.04, targetHoldHours: 12, financingPctPerDay: 0.033,
dailyLossLimit: 3000, dllRoom: 2757.39, maxLossRoom: 5757.39, obfuscationDollars: Infinity, availableFunds: 99757.39,
};
const free = planLegSize(base);
// A largest order well under the ideal size: the notional stops there and
// the hold grows past the target (the margin cap stays what it was).
const capped = planLegSize({ ...base, contract: { ...eth, maxContracts: 5000 } });
assert.ok(Math.abs(capped.sizing.notional - 5000 * 26.86) < 1e-6, `notional ${capped.sizing.notional}`);
assert.ok(capped.sizing.notional < free.sizing.notional);
assert.ok(capped.sizing.predictedHoldHours > 12, `hold ${capped.sizing.predictedHoldHours}`);
assert.equal(capped.cap, free.cap);
// One that doesn't bind changes nothing.
assert.equal(planLegSize({ ...base, contract: { ...eth, maxContracts: 1e9 } }).sizing.notional, free.sizing.notional);
// A smallest order above the ideal size: the order is that big.
const floored = planLegSize({ ...base, contract: { ...eth, minContracts: 20000 } });
assert.ok(Math.abs(floored.sizing.notional - 20000 * 26.86) < 1e-6);
assert.ok(floored.sizing.predictedHoldHours < 12);
// Ranked on the capped hold, a capped instrument no longer wins on cost.
const order = rankForTarget([
{ holdHours: capped.sizing.predictedHoldHours, cost: capped.cost },
{ holdHours: free.sizing.predictedHoldHours, cost: free.cost + 50 },
], 12);
assert.deepEqual(order, [1, 0]);
});
test('rankForTarget: reach the target hold first, cheapest; else quickest', () => {
const order = rankForTarget([
{ holdHours: 12, cost: 330 }, // ETH
{ holdHours: 12.1, cost: 300 }, // BTC — within the 2% tolerance
{ holdHours: 40, cost: 250 }, // XYZ100, capped at 2:1
{ holdHours: 20, cost: 400 }, // SP500, capped
], 12);
assert.deepEqual(order, [1, 0, 3, 2]);
assert.deepEqual(rankForTarget([{ holdHours: 30, cost: 1 }, { holdHours: 25, cost: 9 }], 12), [1, 0]);
assert.deepEqual(rankForTarget([], 12), []);
});
test('sizing carries the swap reserve into the take-profit distance', () => {
const sigma = 0.0124 / Math.sqrt(24);
const stopDollarsAt = (n) => dllStopDollars({ room: 2760.15, dailyLossLimit: 3000, entryFee: 0.0004 * n, commissionPct: 0.04 });
const base = { leg: 12239, stopDollarsAt, volatilityPerHour: sigma, targetHoldHours: 12, commissionPct: 0.04, spreadFraction: 0.0001 };
const withSwap = sizeNotional({ ...base, financingPctPerDay: 0.033, maxNotional: 200000 });
const noSwap = sizeNotional({ ...base, financingPctPerDay: 0, maxNotional: 200000 });
assert.equal(noSwap.swapReserve, 0);
assert.ok(withSwap.swapReserve > 500, `swap ${withSwap.swapReserve}`);
const a = 12239 + 2 * 0.0004 * 200000 + withSwap.swapReserve;
const b = stopDollarsAt(200000);
assert.ok(Math.abs(withSwap.predictedHoldHours - (a / 200000) * (b / 200000) / (sigma * sigma)) < 1e-6);
assert.ok(withSwap.predictedHoldHours > noSwap.predictedHoldHours);
assert.ok(withSwap.winProbability < noSwap.winProbability);
});
// ── every-day calendar ───────────────────────────────────────────────────────
test('nextTradingDate and effectiveCombine', () => {
assert.equal(nextTradingDate('2026-09-25'), '2026-09-28');
assert.equal(nextTradingDate('2026-09-25', true), '2026-09-26');
assert.equal(nextTradingDate('2026-12-24', true), '2026-12-25');
assert.equal(effectiveCombine({ combineCmeHolidays: true }), true);
assert.equal(effectiveCombine({ combineCmeHolidays: true, tradesEveryDay: true }), false);
});
const projCfg = {
profitTarget: 3000, consistency: 0, minDayPnL: 0, minTradingDays: 5, accountSize: 50000,
targetSameEquity: false, withdrawalStages: [], splitEnabled: true,
};
test('every-day projections use consecutive dates; CME ones still skip weekends', () => {
const now = cdt('2026-09-26T12:00:00'); // Saturday noon → trade date Saturday
const common = { accountId: 7, cycleDailyPnL: [], fundTransactions: [], balance: 50000, realizedPnL: 0, now };
const every = projectPerfectPath({ ...common, cfg: { ...projCfg, tradesEveryDay: true } });
const cme = projectPerfectPath({ ...common, cfg: projCfg });
assert.ok(every.length > 1);
for (let i = 1; i < every.length; i++) assert.equal(every[i].date, nextTradingDate(every[i - 1].date, true));
for (const d of cme) {
const dow = new Date(`${d.date}T00:00:00Z`).getUTCDay();
assert.ok(dow !== 0 && dow !== 6, `CME projection landed on ${d.date}`);
}
// Saturday itself is booked (silently) for the every-day firm: its first
// projected day is Sunday, the CME one's is Monday.
assert.equal(every[0].date, '2026-09-27');
assert.equal(cme[0].date, '2026-09-28');
});
test('an every-day firm can finish its cycle on a Saturday', () => {
const now = cdt('2026-09-26T12:00:00');
const cycleDailyPnL = [
{ date: '2026-09-21', pnl: 700 }, { date: '2026-09-22', pnl: 700 },
{ date: '2026-09-23', pnl: 700 }, { date: '2026-09-24', pnl: 700 },
];
const opts = {
accountId: 7, rawTradeDate: '2026-09-26', cycleDailyPnL, rawRealizedPnL: 400, combineCmeHolidays: false,
effective: { profitTarget: 3000, consistency: 0, minTradingDays: 5, minDayPnL: 0, drain: false },
equityProfit: 3200, splitEnabled: true, now,
};
assert.equal(cycleCompletion({ ...opts, tradesEveryDay: true }), 'today');
assert.equal(cycleCompletion(opts), 'none');
});
// ── DXTrade helpers (lib/dxtrade-helpers.ts) ─────────────────────────────────
import {
dxAccountId, accountDisplayName, accountCodeOf, encodeContractName, decodeContractName, roundToStep,
lastUtcReset, ctTradeDayStart, firmDayOf, parseDurationMs, ciNum, signedFundValue, inTradingHours,
realizedVolPerHour, scoreCandidate, candidateRejection, MIN_VOL_CANDLES, parseTransfers, marginRateOf,
} from '../lib/dxtrade-helpers.ts';
test('transfers: a close\'s SETTLEMENT and COMMISSION share a code and both count', () => {
// As Tradeify247 answered for a flatten.
const body = { cashTransfers: [
{ account: 'default:1S100K2166398', transferCode: '2354051:1417097', transactionTime: '2026-09-26T22:33:39.615Z', cashTransactions: [
{ account: 'default:1S100K2166398', transactionCode: '2354051:1417097', type: 'COMMISSION', value: -79.95, transactionTime: '2026-09-26T22:33:39.615Z', orderCode: 'x:af-1-e' },
] },
{ account: 'default:1S100K2166398', transferCode: '2354051:1417102', transactionTime: '2026-09-26T22:33:42.197Z', cashTransactions: [
{ account: 'default:1S100K2166398', transactionCode: '2354051:1417102', type: 'SETTLEMENT', value: -5.43, transactionTime: '2026-09-26T22:33:42.197Z', orderCode: 'x:af-2-x' },
{ account: 'default:1S100K2166398', transactionCode: '2354051:1417102', type: 'COMMISSION', value: -79.95, transactionTime: '2026-09-26T22:33:42.197Z', orderCode: 'x:af-2-x' },
] },
] };
const txns = parseTransfers(body);
assert.equal(txns.length, 3);
const byKey = new Map(txns.map((t) => [t.key, t]));
assert.equal(byKey.size, 3, 'every transaction keeps its own key');
assert.equal(Math.round([...byKey.values()].reduce((s, t) => s + t.value, 0) * 100) / 100, -165.33);
// The same answer again (the next sync, another page) keys identically.
assert.deepEqual(parseTransfers(body).map((t) => t.key), txns.map((t) => t.key));
// Two of one type in one transfer stay apart too.
const twice = { cashTransfers: [{ transferCode: 't', cashTransactions: [
{ account: 'default:A', transactionCode: 'c', type: 'COMMISSION', value: -1, transactionTime: '2026-09-26T00:00:00Z' },
{ account: 'default:A', transactionCode: 'c', type: 'COMMISSION', value: -2, transactionTime: '2026-09-26T00:00:00Z' },
] }] };
assert.equal(new Set(parseTransfers(twice).map((t) => t.key)).size, 2);
});
test('margin rates: flat and tiered, the steepest tier, junk ignored', () => {
assert.equal(marginRateOf({ marginRate: { rateType: 'FLAT', tiers: [{ endVolume: 'Infinity', value: 0.2 }] } }), 0.2);
assert.equal(marginRateOf({ marginRate: { rateType: 'FLAT', tiers: [{ endVolume: 'Infinity', value: 0.5 }] } }), 0.5);
assert.equal(marginRateOf({ marginRate: { tiers: [{ endVolume: 1e6, value: 0.1 }, { endVolume: 'Infinity', value: 0.25 }] } }), 0.25);
assert.equal(marginRateOf({ marginRate: { value: 0.05 } }), 0.05);
assert.equal(marginRateOf({}), undefined);
assert.equal(marginRateOf(undefined), undefined);
assert.equal(marginRateOf({ marginRate: { tiers: [{ value: 'x' }, { value: 0 }, { value: 3 }] } }), undefined);
});
test('dxAccountId is stable, safe, far above broker ids, and host-scoped', () => {
const a = dxAccountId('dx.tradeify247.co', 'default:TFY-1');
assert.equal(a, dxAccountId('DX.Tradeify247.co', 'default:TFY-1'));
assert.ok(Number.isSafeInteger(a) && a >= 2 ** 50 && a < 2 ** 53);
assert.notEqual(a, dxAccountId('dx.other.co', 'default:TFY-1'));
const seen = new Set();
for (let i = 0; i < 20000; i++) seen.add(dxAccountId('dx.tradeify247.co', `default:${i}`));
assert.equal(seen.size, 20000);
});
test('account codes and contract names', () => {
assert.equal(accountDisplayName('default:TFY-50K-12'), 'TFY-50K-12');
assert.equal(accountDisplayName('plain'), 'plain');
assert.equal(accountCodeOf({ clearing: 'default', account: 'x1' }), 'default:x1');
assert.equal(accountCodeOf('default:x1'), 'default:x1');
assert.deepEqual(decodeContractName(encodeContractName('BTC/USD', 0.001)), { symbol: 'BTC/USD', step: 0.001 });
assert.equal(decodeContractName('NQZ5'), null);
assert.equal(roundToStep(0.1 + 0.2, 0.1), 0.3);
assert.equal(roundToStep(12 * 0.001, 0.001), 0.012);
assert.equal(roundToStep(101.234, 0.5, 'up'), 101.5);
assert.equal(roundToStep(101.234, 0.5, 'down'), 101);
});
test('the firm reset and the CT trade-date start', () => {
assert.equal(lastUtcReset(new Date('2026-09-26T21:59:00Z')).toISOString(), '2026-09-25T22:00:00.000Z');
assert.equal(lastUtcReset(new Date('2026-09-26T22:00:00Z')).toISOString(), '2026-09-26T22:00:00.000Z');
assert.equal(ctTradeDayStart(cdt('2026-09-26T18:30:00')).toISOString(), '2026-09-26T22:00:00.000Z');
assert.equal(ctTradeDayStart(cdt('2026-09-27T09:00:00')).toISOString(), '2026-09-26T22:00:00.000Z');
assert.equal(ctTradeDayStart(cst('2027-01-12T10:00:00')).toISOString(), '2027-01-11T23:00:00.000Z');
});
test('the firm\'s day: the same label as the CT trade date, rolling at its reset', () => {
// Summer: the reset is 5 PM CDT, so the two agree on both sides of it.
assert.equal(firmDayOf(new Date('2026-09-26T21:59:00Z')), '2026-09-26');
assert.equal(firmDayOf(new Date('2026-09-26T22:00:00Z')), '2026-09-27');
assert.equal(firmDayOf(new Date('2026-09-26T22:00:00Z')), currentTradeDateCT(new Date('2026-09-26T22:00:00Z')));
// Winter: a close at 4:30 PM CST is the firm's next day, still ours.
const close = cst('2027-01-12T16:30:00');
assert.equal(firmDayOf(close), '2027-01-13');
assert.equal(currentTradeDateCT(close), '2027-01-12');
assert.equal(firmDayOf(cst('2027-01-12T15:59:00')), '2027-01-12');
assert.equal(firmDayOf(cst('2027-01-12T17:30:00')), currentTradeDateCT(cst('2027-01-12T17:30:00')));
});
test('loose parsing', () => {
assert.equal(parseDurationMs('PT30M'), 30 * 60_000);
assert.equal(parseDurationMs('01:05:08'), (3600 + 300 + 8) * 1000);
assert.equal(parseDurationMs({ seconds: 900 }), 900_000);
assert.equal(parseDurationMs(undefined), 30 * 60_000);
assert.equal(ciNum({ openPL: 12.5 }, 'openPl'), 12.5);
assert.equal(ciNum({ openPL: '12' }, 'openPl'), undefined);
assert.equal(signedFundValue('WITHDRAWAL', 500), -500);
assert.equal(signedFundValue('WITHDRAWAL', -500), -500);
assert.equal(signedFundValue('DEPOSIT', 50000), 50000);
});
test('trading hours from UTC week sessions', () => {
const at = (dayOfWeek, hour, eventType) => ({ eventType, weekDay: { dayOfWeek, time: { hour, minute: 30 } } });
const weekdays = [at('MONDAY', 13, 'SESSION_OPEN'), at('MONDAY', 20, 'SESSION_CLOSE'), at('TUESDAY', 13, 'SESSION_OPEN'), at('TUESDAY', 20, 'SESSION_CLOSE')];
assert.equal(inTradingHours(weekdays, new Date('2026-09-28T15:00:00Z')), true); // Monday
assert.equal(inTradingHours(weekdays, new Date('2026-09-28T21:00:00Z')), false);
assert.equal(inTradingHours(weekdays, new Date('2026-09-27T15:00:00Z')), false); // Sunday wraps to Tuesday's close
assert.equal(inTradingHours([], new Date()), true);
assert.equal(inTradingHours([{ garbage: true }], new Date()), true);
});
test('realized volatility of hourly closes', () => {
assert.equal(realizedVolPerHour([100, 101, 102]), null);
const r = rng(6);
const sigma = 0.004;
const closes = [30000];
for (let i = 0; i < 2000; i++) {
// Box–Muller for a normal step
const z = Math.sqrt(-2 * Math.log(1 - r())) * Math.cos(2 * Math.PI * r());
closes.push(closes[closes.length - 1] * Math.exp(sigma * z));
}
const v = realizedVolPerHour(closes);
assert.ok(Math.abs(v - sigma) / sigma < 0.08, `σ ${v}`);
const flat = Array.from({ length: MIN_VOL_CANDLES + 1 }, () => 200);
assert.equal(realizedVolPerHour(flat), 0);
});
test('the selector ranks the plan example: ETH, BTC, XYZ100, AAPL', () => {
const perHour = (daily) => daily / Math.sqrt(24);
const score = (spread, daily) => scoreCandidate({
spreadFraction: spread, commissionPct: 0.04, financingPctPerDay: 0, targetHoldHours: 6, volatilityPerHour: perHour(daily),
});
const board = [
['BTC/USD', score(0.0002, 0.03)],
['XYZ100', score(0.0001, 0.012)],
['AAPL/USD (Sat)', score(0.0005, 0.004)],
['ETH/USD', score(0.0003, 0.04)],
['AAPL/USD (Tue)', score(0.0005, 0.015)],
].sort((a, b) => a[1] - b[1]).map((b) => b[0]);
assert.deepEqual(board, ['ETH/USD', 'BTC/USD', 'XYZ100', 'AAPL/USD (Tue)', 'AAPL/USD (Sat)']);
// Cost per leg = score × √(A·B/T): the example's $50 and $60.
const k = Math.sqrt((600 * 1350) / 6);
assert.ok(Math.abs(score(0.0003, 0.04) * k - 49.6) < 1);
assert.ok(Math.abs(score(0.0002, 0.03) * k - 60) < 1);
// No volatility, no score; financing over the hold adds to the cost.
assert.equal(scoreCandidate({ spreadFraction: 0.0002, commissionPct: 0.04, financingPctPerDay: 0, targetHoldHours: 6, volatilityPerHour: null }), null);
const withFinancing = scoreCandidate({ spreadFraction: 0.0002, commissionPct: 0.04, financingPctPerDay: 0.033, targetHoldHours: 12, volatilityPerHour: perHour(0.03) });
assert.ok(withFinancing > score(0.0002, 0.03));
});
test('the selector drops what cannot trade right now', () => {
const ok = {
tradingStatus: 'FULL', bid: 100, ask: 100.02, quoteAgeMs: 1000, inHours: true, candles: 49,
minContractsOk: true, currency: 'USD', accountCurrency: 'USD',
};
assert.equal(candidateRejection(ok), null);
assert.match(candidateRejection({ ...ok, tradingStatus: 'CLOSE_ONLY' }), /CLOSE_ONLY/);
assert.match(candidateRejection({ ...ok, inHours: false }), /hours/);
assert.match(candidateRejection({ ...ok, bid: undefined }), /quote/);
assert.match(candidateRejection({ ...ok, quoteAgeMs: 10 * 60_000 }), /old/);
assert.match(candidateRejection({ ...ok, ask: 101 }), /spread/);
assert.match(candidateRejection({ ...ok, candles: 10 }), /candles/);
assert.match(candidateRejection({ ...ok, currency: 'EUR' }), /EUR/);
});
// ── Hyperliquid price fallback (lib/hyperliquid-feed.ts) ─────────────────────
import { hyperliquidCoinFor, parseL2Book } from '../lib/hyperliquid-feed.ts';
test('DXtrade symbols map to Hyperliquid coins', () => {
const coins = new Set(['BTC', 'ETH', 'xyz:XYZ100', 'xyz:SP500', 'xyz:AAPL']);
assert.equal(hyperliquidCoinFor('BTC/USD', coins), 'BTC');
assert.equal(hyperliquidCoinFor('ETH/USD', coins), 'ETH');
assert.equal(hyperliquidCoinFor('XYZ100', coins), 'xyz:XYZ100');
assert.equal(hyperliquidCoinFor('SP500', coins), 'xyz:SP500');
assert.equal(hyperliquidCoinFor('AAPL/USD', coins), 'xyz:AAPL');
assert.equal(hyperliquidCoinFor('DOGE/USD', coins), null);
});
test('l2Book best bid/ask', () => {
const q = parseL2Book({ levels: [[{ px: '84310.0' }, { px: '84309' }], [{ px: '84311.0' }]], time: 1790461870878 });
assert.deepEqual(q, { bid: 84310, ask: 84311, time: 1790461870878 });
const empty = parseL2Book({ levels: [[], []] });
assert.equal(empty.bid, undefined);
assert.equal(empty.ask, undefined);
});