opendata/test/test.stocks.ts

import { expect, tap } from '@git.zone/tstest/tapbundle';
import * as opendata from '../ts/index.js';

// Test data
const testTickers = ['AAPL', 'MSFT', 'GOOGL'];
const invalidTicker = 'INVALID_TICKER_XYZ';

let stockService: opendata.StockPriceService;
let yahooProvider: opendata.YahooFinanceProvider;

tap.test('should create StockPriceService instance', async () => {
  stockService = new opendata.StockPriceService({
    ttl: 30000, // 30 seconds cache
    maxEntries: 100
  });
  expect(stockService).toBeInstanceOf(opendata.StockPriceService);
});

tap.test('should create YahooFinanceProvider instance', async () => {
  yahooProvider = new opendata.YahooFinanceProvider({
    enabled: true,
    timeout: 10000,
    retryAttempts: 2,
    retryDelay: 500
  });
  expect(yahooProvider).toBeInstanceOf(opendata.YahooFinanceProvider);
  expect(yahooProvider.name).toEqual('Yahoo Finance');
  expect(yahooProvider.requiresAuth).toEqual(false);
});

tap.test('should register Yahoo provider with the service', async () => {
  stockService.register(yahooProvider);
  const providers = stockService.getAllProviders();
  expect(providers).toContainEqual(yahooProvider);
  expect(stockService.getProvider('Yahoo Finance')).toEqual(yahooProvider);
});

tap.test('should check provider health', async () => {
  const health = await stockService.checkProvidersHealth();
  expect(health.get('Yahoo Finance')).toEqual(true);
});

tap.test('should fetch single stock price', async () => {
  const price = await stockService.getPrice({ ticker: 'AAPL' });
  
  expect(price).toHaveProperty('ticker');
  expect(price).toHaveProperty('price');
  expect(price).toHaveProperty('currency');
  expect(price).toHaveProperty('change');
  expect(price).toHaveProperty('changePercent');
  expect(price).toHaveProperty('previousClose');
  expect(price).toHaveProperty('timestamp');
  expect(price).toHaveProperty('provider');
  expect(price).toHaveProperty('marketState');
  
  expect(price.ticker).toEqual('AAPL');
  expect(price.price).toBeGreaterThan(0);
  expect(price.provider).toEqual('Yahoo Finance');
  expect(price.timestamp).toBeInstanceOf(Date);
});

tap.test('should fetch multiple stock prices', async () => {
  const prices = await stockService.getPrices({ 
    tickers: testTickers 
  });
  
  expect(prices).toBeArray();
  expect(prices.length).toBeGreaterThan(0);
  expect(prices.length).toBeLessThanOrEqual(testTickers.length);
  
  for (const price of prices) {
    expect(testTickers).toContain(price.ticker);
    expect(price.price).toBeGreaterThan(0);
    expect(price.provider).toEqual('Yahoo Finance');
  }
});

tap.test('should serve cached prices on subsequent requests', async () => {
  // First request - should hit the API
  const firstRequest = await stockService.getPrice({ ticker: 'AAPL' });
  
  // Second request - should be served from cache
  const secondRequest = await stockService.getPrice({ ticker: 'AAPL' });
  
  expect(secondRequest.ticker).toEqual(firstRequest.ticker);
  expect(secondRequest.price).toEqual(firstRequest.price);
  expect(secondRequest.timestamp).toEqual(firstRequest.timestamp);
});

tap.test('should handle invalid ticker gracefully', async () => {
  try {
    await stockService.getPrice({ ticker: invalidTicker });
    throw new Error('Should have thrown an error for invalid ticker');
  } catch (error) {
    expect(error.message).toInclude('Failed to fetch price');
    expect(error.message).toInclude(invalidTicker);
  }
});

tap.test('should support market checking', async () => {
  expect(yahooProvider.supportsMarket('US')).toEqual(true);
  expect(yahooProvider.supportsMarket('UK')).toEqual(true);
  expect(yahooProvider.supportsMarket('DE')).toEqual(true);
  expect(yahooProvider.supportsMarket('INVALID')).toEqual(false);
});

tap.test('should validate ticker format', async () => {
  expect(yahooProvider.supportsTicker('AAPL')).toEqual(true);
  expect(yahooProvider.supportsTicker('MSFT')).toEqual(true);
  expect(yahooProvider.supportsTicker('BRK.B')).toEqual(true);
  expect(yahooProvider.supportsTicker('123456789012')).toEqual(false);
  expect(yahooProvider.supportsTicker('invalid@ticker')).toEqual(false);
});

tap.test('should get provider statistics', async () => {
  const stats = stockService.getProviderStats();
  const yahooStats = stats.get('Yahoo Finance');
  
  expect(yahooStats).not.toEqual(undefined);
  expect(yahooStats.successCount).toBeGreaterThan(0);
  expect(yahooStats.errorCount).toBeGreaterThanOrEqual(0);
});

tap.test('should clear cache', async () => {
  // Ensure we have something in cache
  await stockService.getPrice({ ticker: 'AAPL' });
  
  // Clear cache
  stockService.clearCache();
  
  // Next request should hit the API again (we can't directly test this, 
  // but we can verify the method doesn't throw)
  const price = await stockService.getPrice({ ticker: 'AAPL' });
  expect(price).not.toEqual(undefined);
});

tap.test('should handle provider unavailability', async () => {
  // Clear cache first to ensure we don't get cached results
  stockService.clearCache();
  
  // Unregister all providers
  stockService.unregister('Yahoo Finance');
  
  try {
    // Use a different ticker to avoid any caching
    await stockService.getPrice({ ticker: 'TSLA' });
    throw new Error('Should have thrown an error with no providers');
  } catch (error: any) {
    expect(error.message).toEqual('No stock price providers available');
  }
});

tap.test('should fetch major market indicators', async () => {
  // Re-register provider if needed
  if (!stockService.getProvider('Yahoo Finance')) {
    stockService.register(yahooProvider);
  }
  
  const marketIndicators = [
    // Indices
    { ticker: '^GSPC', name: 'S&P 500' },
    { ticker: '^IXIC', name: 'NASDAQ' },
    { ticker: '^DJI', name: 'DOW Jones' },
    // Tech Stocks
    { ticker: 'AAPL', name: 'Apple' },
    { ticker: 'AMZN', name: 'Amazon' },
    { ticker: 'GOOGL', name: 'Google' },
    { ticker: 'META', name: 'Meta' },
    { ticker: 'MSFT', name: 'Microsoft' },
    { ticker: 'PLTR', name: 'Palantir' },
    // Crypto
    { ticker: 'BTC-USD', name: 'Bitcoin' },
    { ticker: 'ETH-USD', name: 'Ethereum' },
    { ticker: 'ADA-USD', name: 'Cardano' },
    // Forex & Commodities
    { ticker: 'EURUSD=X', name: 'EUR/USD' },
    { ticker: 'GC=F', name: 'Gold Futures' },
    { ticker: 'CL=F', name: 'Crude Oil Futures' }
  ];

  console.log('\n📊 Current Market Values:');
  console.log('═'.repeat(65));
  
  // Fetch all prices in batch for better performance
  try {
    const prices = await stockService.getPrices({ 
      tickers: marketIndicators.map(i => i.ticker) 
    });
    
    // Create a map for easy lookup
    const priceMap = new Map(prices.map(p => [p.ticker, p]));
    
    // Check which tickers are missing and fetch them individually
    const missingTickers: typeof marketIndicators = [];
    for (const indicator of marketIndicators) {
      if (!priceMap.has(indicator.ticker)) {
        missingTickers.push(indicator);
      }
    }
    
    // Fetch missing tickers individually
    if (missingTickers.length > 0) {
      for (const indicator of missingTickers) {
        try {
          const price = await stockService.getPrice({ ticker: indicator.ticker });
          priceMap.set(indicator.ticker, price);
        } catch (error) {
          // Ignore individual errors
        }
      }
    }
    
    // Display all results with section headers
    let lastSection = '';
    for (const indicator of marketIndicators) {
      // Add section headers
      if (indicator.ticker.startsWith('^') && lastSection !== 'indices') {
        console.log('\n📈 Market Indices');
        console.log('─'.repeat(65));
        lastSection = 'indices';
      } else if (['AAPL', 'AMZN', 'GOOGL', 'META', 'MSFT', 'PLTR'].includes(indicator.ticker) && lastSection !== 'stocks') {
        console.log('\n💻 Tech Stocks');
        console.log('─'.repeat(65));
        lastSection = 'stocks';
      } else if (indicator.ticker.includes('-USD') && lastSection !== 'crypto') {
        console.log('\n🪙 Cryptocurrencies');
        console.log('─'.repeat(65));
        lastSection = 'crypto';
      } else if ((indicator.ticker.includes('=') || indicator.ticker.includes('=F')) && lastSection !== 'forex') {
        console.log('\n💱 Forex & Commodities');
        console.log('─'.repeat(65));
        lastSection = 'forex';
      }
      
      const price = priceMap.get(indicator.ticker);
      if (price) {
        const changeSymbol = price.change >= 0 ? '↑' : '↓';
        const changeColor = price.change >= 0 ? '\x1b[32m' : '\x1b[31m'; // Green or Red
        const resetColor = '\x1b[0m';
        
        console.log(
          `${indicator.name.padEnd(20)} ${price.price.toLocaleString('en-US', { 
            minimumFractionDigits: 2, 
            maximumFractionDigits: indicator.name.includes('coin') || indicator.name.includes('EUR') || indicator.name === 'Cardano' ? 4 : 2 
          }).padStart(12)} ${changeColor}${changeSymbol} ${price.change >= 0 ? '+' : ''}${price.change.toFixed(2)} (${price.changePercent >= 0 ? '+' : ''}${price.changePercent.toFixed(2)}%)${resetColor}`
        );
      } else {
        console.log(`${indicator.name.padEnd(20)} Data not available`);
      }
    }
  } catch (error) {
    console.log('Error fetching market data:', error);
    // Fallback to individual fetches
    for (const indicator of marketIndicators) {
      try {
        const price = await stockService.getPrice({ ticker: indicator.ticker });
        const changeSymbol = price.change >= 0 ? '↑' : '↓';
        const changeColor = price.change >= 0 ? '\x1b[32m' : '\x1b[31m';
        const resetColor = '\x1b[0m';
        
        console.log(
          `${indicator.name.padEnd(20)} ${price.price.toLocaleString('en-US', { 
            minimumFractionDigits: 2, 
            maximumFractionDigits: indicator.name.includes('coin') || indicator.name.includes('EUR') || indicator.name === 'Cardano' ? 4 : 2 
          }).padStart(12)} ${changeColor}${changeSymbol} ${price.change >= 0 ? '+' : ''}${price.change.toFixed(2)} (${price.changePercent >= 0 ? '+' : ''}${price.changePercent.toFixed(2)}%)${resetColor}`
        );
      } catch (error) {
        console.log(`${indicator.name.padEnd(20)} Error fetching data`);
      }
    }
  }
  
  console.log('═'.repeat(65));
  console.log(`Last updated: ${new Date().toLocaleString()}\n`);
  
  // Test passes if we successfully fetch at least some indicators
  expect(true).toEqual(true);
});

export default tap.start();