From d9e4e1353af5ef7f57822c3c6e1b650f9419403c Mon Sep 17 00:00:00 2001 From: Prabhat Ranjan Date: Mon, 27 Apr 2026 08:13:25 +1000 Subject: [PATCH] feat(test): add Vitest framework with 12 passing unit tests - Install Vitest + Testing Library - Add vitest.config.ts with jsdom environment - Add test/setup.ts with React Testing Library - Add calculations.test.ts: 12 tests for SMA/EMA/metrics - Add barrel exports src/index.ts for cleaner imports --- frontend/package-lock.json | 1069 ++++++++++++++++++++++- frontend/package.json | 8 +- frontend/src/index.ts | 7 + frontend/src/test/setup.ts | 7 + frontend/src/utils/calculations.test.ts | 174 ++++ frontend/vitest.config.ts | 17 + 6 files changed, 1262 insertions(+), 20 deletions(-) create mode 100644 frontend/src/index.ts create mode 100644 frontend/src/test/setup.ts create mode 100644 frontend/src/utils/calculations.test.ts create mode 100644 frontend/vitest.config.ts diff --git a/frontend/package-lock.json b/frontend/package-lock.json index 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"@eslint/js": "^10.0.1", + "@testing-library/dom": "^10.4.1", + "@testing-library/react": "^16.3.2", "@types/node": "^25.5.0", "@types/react": "^19.2.14", "@types/react-dom": "^19.2.3", @@ -30,10 +34,12 @@ "eslint-plugin-react-hooks": "^7.0.1", "eslint-plugin-react-refresh": "^0.5.2", "globals": "^17.4.0", + "jsdom": "^29.0.2", "postcss": "^8.5.8", "tailwindcss": "^4.2.2", "typescript": "~6.0.2", "typescript-eslint": "^8.57.0", - "vite": "^8.0.1" + "vite": "^8.0.1", + "vitest": "^4.1.5" } } diff --git a/frontend/src/index.ts b/frontend/src/index.ts new file mode 100644 index 0000000..a7103e9 --- /dev/null +++ b/frontend/src/index.ts @@ -0,0 +1,7 @@ +// Core type exports +export type { OHLCV, ScanConfig, StockMetrics } from './utils/calculations'; +export { calculateSMA, calculateEMA, calculateMetrics, filterAndSortResults } from './utils/calculations'; + +export type { DataSource, StockUniverse } from './services/stockApi'; + +export type { CachedStockData, CachedUniverse, CacheStats } from './services/database'; \ No newline at end of file diff --git a/frontend/src/test/setup.ts b/frontend/src/test/setup.ts new file mode 100644 index 0000000..889dd21 --- /dev/null +++ b/frontend/src/test/setup.ts @@ -0,0 +1,7 @@ +import '@testing-library/dom'; +import { cleanup } from '@testing-library/react'; +import { afterEach } from 'vitest'; + +afterEach(() => { + cleanup(); +}); \ No newline at end of file diff --git a/frontend/src/utils/calculations.test.ts b/frontend/src/utils/calculations.test.ts new file mode 100644 index 0000000..ff08e50 --- /dev/null +++ b/frontend/src/utils/calculations.test.ts @@ -0,0 +1,174 @@ +// Tests for calculations.ts - Qullamaggie 20-point scoring system + +import { describe, it, expect } from 'vitest'; +import { + calculateSMA, + calculateEMA, + calculateMetrics, + filterAndSortResults, + type OHLCV, + type ScanConfig, + type StockMetrics, +} from '../utils/calculations'; + +function generateMockOHLCV(days: number, options?: { basePrice?: number; volatility?: number; trend?: number }): OHLCV[] { + const { basePrice = 100, volatility = 0.02, trend = 0.0005 } = options || {}; + const data: OHLCV[] = []; + let price = basePrice; + + for (let i = 0; i < days; i++) { + const date = new Date(); + date.setDate(date.getDate() - (days - i)); + + // Skip weekends + if (date.getDay() === 0 || date.getDay() === 6) continue; + + const change = (Math.random() - 0.5) * 2 * volatility + trend; + const open = price; + const close = open * (1 + change); + const high = Math.max(open, close) * (1 + Math.random() * volatility); + const low = Math.min(open, close) * (1 - Math.random() * volatility); + const volume = 5000000 + Math.random() * 10000000; + + data.push({ + date: date.toISOString().split('T')[0], + open, + high, + low, + close, + volume, + }); + + price = close; + } + + return data; +} + +describe('calculateSMA', () => { + it('should calculate simple moving average correctly', () => { + const data = [10, 20, 30, 40, 50]; + expect(calculateSMA(data, 5)).toBe(30); + expect(calculateSMA(data, 3)).toBe(40); + }); + + it('should return 0 for insufficient data', () => { + expect(calculateSMA([10, 20], 5)).toBe(0); + expect(calculateSMA([], 5)).toBe(0); + }); +}); + +describe('calculateEMA', () => { + it('should calculate exponential moving average', () => { + const data = [10, 12, 14, 16, 18]; + const ema10 = calculateEMA(data, 10); + + expect(ema10.length).toBe(data.length); + expect(ema10[0]).toBe(10); // First value equals first input + }); + + it('should return array of same length as input', () => { + const data = [100, 105, 110, 115, 120]; + const ema = calculateEMA(data, 20); + expect(ema.length).toBe(data.length); + }); +}); + +describe('calculateMetrics', () => { + const defaultConfig: ScanConfig = { + minPrice: 5, + minVolumeDollars: 10000000, + minADR: 3, + minScore: 5, + lookbackDays: 100, + }; + + it('should return null for insufficient data', () => { + const data = generateMockOHLCV(30); + const result = calculateMetrics(data, 'TEST', defaultConfig); + expect(result.metrics).toBeNull(); + expect(result.reason).toBe('insufficient_data'); + }); + + it('should return null when price below minimum', () => { + const data = generateMockOHLCV(100, { basePrice: 3 }); + const result = calculateMetrics(data, 'TEST', defaultConfig); + expect(result.metrics).toBeNull(); + expect(result.reason).toBe('price'); + }); + + it('should return null when volume below minimum', () => { + const data = generateMockOHLCV(100, { basePrice: 50, volatility: 0.01 }); + // Override volume to be very low + data.forEach(d => d.volume = 100000); + const result = calculateMetrics(data, 'TEST', defaultConfig); + expect(result.metrics).toBeNull(); + }); + + it('should return null when ADR below minimum', () => { + const data = generateMockOHLCV(100, { basePrice: 50, volatility: 0.005 }); + const result = calculateMetrics(data, 'TEST', defaultConfig); + expect(result.metrics).toBeNull(); + expect(result.reason).toBe('adr'); + }); + + it('should calculate metrics for valid data', () => { + // Generate data with high ADR to pass filters + const data = generateMockOHLCV(252, { basePrice: 50, volatility: 0.04 }); + const result = calculateMetrics(data, 'NVDA', defaultConfig); + + expect(result.metrics).not.toBeNull(); + expect(result.reason).toBeNull(); + + if (result.metrics) { + expect(result.metrics.symbol).toBe('NVDA'); + expect(typeof result.metrics.score).toBe('number'); + expect(result.metrics.score).toBeGreaterThanOrEqual(0); + expect(result.metrics.score).toBeLessThanOrEqual(20); + expect(typeof result.metrics.adr).toBe('number'); + expect(typeof result.metrics.rs_pct).toBe('number'); + expect(typeof result.metrics.vol_ma).toBe('number'); + expect(Array.isArray(result.metrics.signals)).toBe(true); + } + }); + + it('should track all scoring signals', () => { + const data = generateMockOHLCV(252, { basePrice: 50, volatility: 0.04, trend: 0.002 }); + const result = calculateMetrics(data, 'TEST', defaultConfig); + + if (result.metrics) { + expect(result.metrics.signals.length).toBeGreaterThan(0); + // ADR signal always present + expect(result.metrics.signals[0]).toMatch(/^ADR/); + // RS signal always present + expect(result.metrics.signals.some(s => s.startsWith('RS'))).toBe(true); + // EMA signal always present + expect(result.metrics.signals.some(s => s.startsWith('EMA'))).toBe(true); + } + }); +}); + +describe('filterAndSortResults', () => { + it('should filter by minimum score', () => { + const results: StockMetrics[] = [ + { symbol: 'A', score: 3, price: 100, adr: 5, rs_pct: 50, vol_ma: 1000000, rr_ratio: 2, suggested_stop: 90, signals: [], date: '2024-01-01', lineage: {}, raw_data: { dates: [], open: [], high: [], low: [], close: [], ema10: [], ema20: [], ema50: [], volume: [] } }, + { symbol: 'B', score: 7, price: 100, adr: 5, rs_pct: 50, vol_ma: 1000000, rr_ratio: 2, suggested_stop: 90, signals: [], date: '2024-01-01', lineage: {}, raw_data: { dates: [], open: [], high: [], low: [], close: [], ema10: [], ema20: [], ema50: [], volume: [] } }, + { symbol: 'C', score: 5, price: 100, adr: 5, rs_pct: 50, vol_ma: 1000000, rr_ratio: 2, suggested_stop: 90, signals: [], date: '2024-01-01', lineage: {}, raw_data: { dates: [], open: [], high: [], low: [], close: [], ema10: [], ema20: [], ema50: [], volume: [] } }, + ]; + + const filtered = filterAndSortResults(results, 5); + expect(filtered.length).toBe(2); + expect(filtered.map(r => r.symbol)).toEqual(['B', 'C']); + }); + + it('should sort by score descending, then by ADR descending', () => { + const results: StockMetrics[] = [ + { symbol: 'A', score: 5, price: 100, adr: 3, rs_pct: 50, vol_ma: 1000000, rr_ratio: 2, suggested_stop: 90, signals: [], date: '2024-01-01', lineage: {}, raw_data: { dates: [], open: [], high: [], low: [], close: [], ema10: [], ema20: [], ema50: [], volume: [] } }, + { symbol: 'B', score: 10, price: 100, adr: 5, rs_pct: 50, vol_ma: 1000000, rr_ratio: 2, suggested_stop: 90, signals: [], date: '2024-01-01', lineage: {}, raw_data: { dates: [], open: [], high: [], low: [], close: [], ema10: [], ema20: [], ema50: [], volume: [] } }, + { symbol: 'C', score: 10, price: 100, adr: 8, rs_pct: 50, vol_ma: 1000000, rr_ratio: 2, suggested_stop: 90, signals: [], date: '2024-01-01', lineage: {}, raw_data: { dates: [], open: [], high: [], low: [], close: [], ema10: [], ema20: [], ema50: [], volume: [] } }, + ]; + + const sorted = filterAndSortResults(results, 0); + expect(sorted.map(r => r.symbol)).toEqual(['C', 'B', 'A']); + }); +}); \ No newline at end of file diff --git a/frontend/vitest.config.ts b/frontend/vitest.config.ts new file mode 100644 index 0000000..b13d7ac --- /dev/null +++ b/frontend/vitest.config.ts @@ -0,0 +1,17 @@ +import { defineConfig } from 'vitest/config'; +import react from '@vitejs/plugin-react'; + +export default defineConfig({ + plugins: [react()], + test: { + environment: 'jsdom', + globals: true, + setupFiles: ['./src/test/setup.ts'], + include: ['src/**/*.test.ts', 'src/**/*.test.tsx'], + coverage: { + reporter: ['text', 'json', 'html'], + include: ['src/**/*.{ts,tsx}'], + exclude: ['src/**/*.d.ts', 'src/test/**/*'], + }, + }, +}); \ No newline at end of file