Sai Kiran Vella
125 lines
3.3 KiB
TypeScript
125 lines
3.3 KiB
TypeScript
import { test } from 'node:test';
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import assert from 'node:assert/strict';
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import { StockScorer } from '../server/scorers/StockScorer';
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import type { StockMetrics } from '../server/types';
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const baseRules = {
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gates: { maxDebtToEquity: 3.0, minQuickRatio: 0.5, maxPERatio: 20, maxPegGate: 1.5 },
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weights: { margin: 2, opMargin: 2, roe: 3, peg: 2, revenue: 2, fcf: 2 },
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thresholds: {
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marginHigh: 20,
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marginMed: 10,
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opMarginHigh: 20,
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opMarginMed: 10,
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roeHigh: 20,
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roeMed: 10,
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pegHigh: 1.0,
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pegMed: 1.5,
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revHigh: 15,
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revMed: 5,
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fcfHigh: 5,
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fcfMed: 2,
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},
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};
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// Minimal fixture — tests exercise specific fields; unused metrics are null.
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const nullMetrics: Omit<
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StockMetrics,
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| 'sector'
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| 'capCategory'
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| 'growthCategory'
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| 'currentPrice'
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| 'peRatio'
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| 'pegRatio'
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| 'debtToEquity'
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| 'quickRatio'
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| 'returnOnEquity'
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| 'operatingMargin'
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| 'netProfitMargin'
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| 'revenueGrowth'
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| 'fcfYield'
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> = {
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priceToBook: null,
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grossMargin: null,
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earningsGrowth: null,
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pFFO: null,
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dividendYield: null,
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beta: null,
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week52High: null,
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week52Low: null,
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week52Change: null,
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week52FromHigh: null,
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week52FromLow: null,
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marketCap: null,
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analystRating: null,
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analystTargetPrice: null,
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analystUpside: null,
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numberOfAnalysts: null,
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dcfIntrinsicValue: null,
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dcfMarginOfSafety: null,
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};
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const pass: StockMetrics = {
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...nullMetrics,
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sector: 'GENERAL',
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capCategory: 'Large Cap',
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growthCategory: 'Growth',
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currentPrice: 150,
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peRatio: 15,
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pegRatio: 1.2,
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debtToEquity: 1.0,
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quickRatio: 1.0,
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returnOnEquity: 22,
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operatingMargin: 25,
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netProfitMargin: 18,
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revenueGrowth: 16,
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fcfYield: 6,
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};
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test('rejects on high D/E', () => {
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const result = StockScorer.score({ ...pass, debtToEquity: 4.0 }, baseRules);
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assert.equal(result.label, '🔴 REJECT');
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assert(result.scoreSummary.includes('D/E'));
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});
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test('rejects on high P/E', () => {
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const result = StockScorer.score({ ...pass, peRatio: 25 }, baseRules);
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assert.equal(result.label, '🔴 REJECT');
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assert(result.scoreSummary.includes('P/E'));
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});
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test('rejects on high PEG', () => {
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const result = StockScorer.score({ ...pass, pegRatio: 2.0 }, baseRules);
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assert.equal(result.label, '🔴 REJECT');
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});
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test('skips gate when metric is null (missing data)', () => {
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const result = StockScorer.score({ ...pass, pegRatio: null, peRatio: null }, baseRules);
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assert.notEqual(result.label, '🔴 REJECT');
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});
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test('high-conviction BUY on strong metrics', () => {
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const result = StockScorer.score(pass, baseRules);
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assert.equal(result.label, '🟢 BUY (High Conviction)');
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});
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test('audit breakdown contains scored factors', () => {
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const result = StockScorer.score(pass, baseRules);
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assert(result.audit.passedGates);
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assert(result.audit.breakdown!.roe != null);
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assert(result.audit.breakdown!.margin != null);
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});
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test('beta > 1.5 surfaces as risk flag', () => {
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const result = StockScorer.score({ ...pass, beta: 2.0 }, baseRules);
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assert(result.audit.riskFlags?.some((f) => f.includes('High volatility')));
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});
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test('near 52-week high surfaces as risk flag', () => {
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const result = StockScorer.score(
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{ ...pass, week52High: 200, week52Low: 100, currentPrice: 195 },
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baseRules,
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);
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assert(result.audit.riskFlags?.some((f) => f.includes('52-week high')));
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});
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