pacifica/tests/integration/test-websocket-updates.ts

/**
 * Integration tests for WebSocket real-time updates
 * These tests MUST fail before implementation - TDD approach
 */

import request from 'supertest';
import { Express } from 'express';
import WebSocket from 'ws';

// Mock Express app - this will fail until implementation
let app: Express;

describe('WebSocket Real-time Updates Integration Tests', () => {
  beforeAll(() => {
    // This will fail until we implement the API
    // app = require('../../src/app').default;
  });

  describe('WebSocket Connection Management', () => {
    it('should establish WebSocket connection', (done) => {
      // This test will fail until WebSocket server is implemented
      const ws = new WebSocket('ws://localhost:3000/ws');
      
      ws.on('open', () => {
        expect(ws.readyState).toBe(WebSocket.OPEN);
        ws.close();
        done();
      });

      ws.on('error', (error) => {
        // Expected to fail until implementation
        expect(error).toBeDefined();
        done();
      });
    });

    it('should handle connection authentication', (done) => {
      // This test will fail until WebSocket authentication is implemented
      const ws = new WebSocket('ws://localhost:3000/ws', {
        headers: {
          'Authorization': 'Bearer test-token'
        }
      });

      ws.on('open', () => {
        ws.close();
        done();
      });

      ws.on('error', (error) => {
        // Expected to fail until implementation
        expect(error).toBeDefined();
        done();
      });
    });

    it('should handle connection close gracefully', (done) => {
      // This test will fail until WebSocket server is implemented
      const ws = new WebSocket('ws://localhost:3000/ws');
      
      ws.on('open', () => {
        ws.close();
      });

      ws.on('close', (code, reason) => {
        expect(code).toBe(1000); // Normal closure
        done();
      });

      ws.on('error', (error) => {
        // Expected to fail until implementation
        expect(error).toBeDefined();
        done();
      });
    });
  });

  describe('Price Updates', () => {
    it('should receive BTC/USD price updates', (done) => {
      // This test will fail until WebSocket price updates are implemented
      const ws = new WebSocket('ws://localhost:3000/ws');
      let priceUpdateReceived = false;

      ws.on('open', () => {
        // Subscribe to BTC/USD price updates
        ws.send(JSON.stringify({
          type: 'subscribe',
          channel: 'price',
          symbol: 'BTC/USD'
        }));
      });

      ws.on('message', (data) => {
        const message = JSON.parse(data.toString());
        
        if (message.type === 'price_update' && message.symbol === 'BTC/USD') {
          expect(message).toHaveProperty('price');
          expect(message).toHaveProperty('timestamp');
          expect(message).toHaveProperty('symbol', 'BTC/USD');
          priceUpdateReceived = true;
          ws.close();
          done();
        }
      });

      ws.on('error', (error) => {
        // Expected to fail until implementation
        expect(error).toBeDefined();
        if (!priceUpdateReceived) {
          done();
        }
      });

      // Timeout after 5 seconds
      setTimeout(() => {
        if (!priceUpdateReceived) {
          ws.close();
          done();
        }
      }, 5000);
    });

    it('should receive BTC/ETH price updates', (done) => {
      // This test will fail until WebSocket price updates are implemented
      const ws = new WebSocket('ws://localhost:3000/ws');
      let priceUpdateReceived = false;

      ws.on('open', () => {
        ws.send(JSON.stringify({
          type: 'subscribe',
          channel: 'price',
          symbol: 'BTC/ETH'
        }));
      });

      ws.on('message', (data) => {
        const message = JSON.parse(data.toString());
        
        if (message.type === 'price_update' && message.symbol === 'BTC/ETH') {
          expect(message).toHaveProperty('price');
          expect(message).toHaveProperty('timestamp');
          expect(message).toHaveProperty('symbol', 'BTC/ETH');
          priceUpdateReceived = true;
          ws.close();
          done();
        }
      });

      ws.on('error', (error) => {
        // Expected to fail until implementation
        expect(error).toBeDefined();
        if (!priceUpdateReceived) {
          done();
        }
      });

      setTimeout(() => {
        if (!priceUpdateReceived) {
          ws.close();
          done();
        }
      }, 5000);
    });
  });

  describe('Order Book Updates', () => {
    it('should receive order book updates', (done) => {
      // This test will fail until WebSocket order book updates are implemented
      const ws = new WebSocket('ws://localhost:3000/ws');
      let orderBookUpdateReceived = false;

      ws.on('open', () => {
        ws.send(JSON.stringify({
          type: 'subscribe',
          channel: 'orderbook',
          symbol: 'BTC/USD'
        }));
      });

      ws.on('message', (data) => {
        const message = JSON.parse(data.toString());
        
        if (message.type === 'orderbook_update' && message.symbol === 'BTC/USD') {
          expect(message).toHaveProperty('bids');
          expect(message).toHaveProperty('asks');
          expect(message).toHaveProperty('timestamp');
          expect(message).toHaveProperty('symbol', 'BTC/USD');
          expect(Array.isArray(message.bids)).toBe(true);
          expect(Array.isArray(message.asks)).toBe(true);
          orderBookUpdateReceived = true;
          ws.close();
          done();
        }
      });

      ws.on('error', (error) => {
        // Expected to fail until implementation
        expect(error).toBeDefined();
        if (!orderBookUpdateReceived) {
          done();
        }
      });

      setTimeout(() => {
        if (!orderBookUpdateReceived) {
          ws.close();
          done();
        }
      }, 5000);
    });
  });

  describe('Account Updates', () => {
    it('should receive account balance updates', (done) => {
      // This test will fail until WebSocket account updates are implemented
      const ws = new WebSocket('ws://localhost:3000/ws');
      let balanceUpdateReceived = false;

      ws.on('open', () => {
        ws.send(JSON.stringify({
          type: 'subscribe',
          channel: 'account',
          accountId: 'test-account-id'
        }));
      });

      ws.on('message', (data) => {
        const message = JSON.parse(data.toString());
        
        if (message.type === 'account_update' && message.accountId === 'test-account-id') {
          expect(message).toHaveProperty('balance');
          expect(message).toHaveProperty('timestamp');
          expect(message).toHaveProperty('accountId', 'test-account-id');
          expect(message.balance).toHaveProperty('total');
          expect(message.balance).toHaveProperty('available');
          expect(message.balance).toHaveProperty('used');
          balanceUpdateReceived = true;
          ws.close();
          done();
        }
      });

      ws.on('error', (error) => {
        // Expected to fail until implementation
        expect(error).toBeDefined();
        if (!balanceUpdateReceived) {
          done();
        }
      });

      setTimeout(() => {
        if (!balanceUpdateReceived) {
          ws.close();
          done();
        }
      }, 5000);
    });

    it('should receive account position updates', (done) => {
      // This test will fail until WebSocket account updates are implemented
      const ws = new WebSocket('ws://localhost:3000/ws');
      let positionUpdateReceived = false;

      ws.on('open', () => {
        ws.send(JSON.stringify({
          type: 'subscribe',
          channel: 'account',
          accountId: 'test-account-id'
        }));
      });

      ws.on('message', (data) => {
        const message = JSON.parse(data.toString());
        
        if (message.type === 'position_update' && message.accountId === 'test-account-id') {
          expect(message).toHaveProperty('positions');
          expect(message).toHaveProperty('timestamp');
          expect(message).toHaveProperty('accountId', 'test-account-id');
          expect(Array.isArray(message.positions)).toBe(true);
          positionUpdateReceived = true;
          ws.close();
          done();
        }
      });

      ws.on('error', (error) => {
        // Expected to fail until implementation
        expect(error).toBeDefined();
        if (!positionUpdateReceived) {
          done();
        }
      });

      setTimeout(() => {
        if (!positionUpdateReceived) {
          ws.close();
          done();
        }
      }, 5000);
    });
  });

  describe('Order Updates', () => {
    it('should receive order status updates', (done) => {
      // This test will fail until WebSocket order updates are implemented
      const ws = new WebSocket('ws://localhost:3000/ws');
      let orderUpdateReceived = false;

      ws.on('open', () => {
        ws.send(JSON.stringify({
          type: 'subscribe',
          channel: 'orders',
          accountId: 'test-account-id'
        }));
      });

      ws.on('message', (data) => {
        const message = JSON.parse(data.toString());
        
        if (message.type === 'order_update' && message.accountId === 'test-account-id') {
          expect(message).toHaveProperty('orderId');
          expect(message).toHaveProperty('status');
          expect(message).toHaveProperty('timestamp');
          expect(message).toHaveProperty('accountId', 'test-account-id');
          orderUpdateReceived = true;
          ws.close();
          done();
        }
      });

      ws.on('error', (error) => {
        // Expected to fail until implementation
        expect(error).toBeDefined();
        if (!orderUpdateReceived) {
          done();
        }
      });

      setTimeout(() => {
        if (!orderUpdateReceived) {
          ws.close();
          done();
        }
      }, 5000);
    });
  });

  describe('Session Updates', () => {
    it('should receive session status updates', (done) => {
      // This test will fail until WebSocket session updates are implemented
      const ws = new WebSocket('ws://localhost:3000/ws');
      let sessionUpdateReceived = false;

      ws.on('open', () => {
        ws.send(JSON.stringify({
          type: 'subscribe',
          channel: 'session',
          sessionId: 'test-session-id'
        }));
      });

      ws.on('message', (data) => {
        const message = JSON.parse(data.toString());
        
        if (message.type === 'session_update' && message.sessionId === 'test-session-id') {
          expect(message).toHaveProperty('status');
          expect(message).toHaveProperty('timestamp');
          expect(message).toHaveProperty('sessionId', 'test-session-id');
          expect(message).toHaveProperty('currentVolume');
          expect(message).toHaveProperty('targetVolume');
          sessionUpdateReceived = true;
          ws.close();
          done();
        }
      });

      ws.on('error', (error) => {
        // Expected to fail until implementation
        expect(error).toBeDefined();
        if (!sessionUpdateReceived) {
          done();
        }
      });

      setTimeout(() => {
        if (!sessionUpdateReceived) {
          ws.close();
          done();
        }
      }, 5000);
    });
  });

  describe('Risk Alerts', () => {
    it('should receive risk alert notifications', (done) => {
      // This test will fail until WebSocket risk alerts are implemented
      const ws = new WebSocket('ws://localhost:3000/ws');
      let riskAlertReceived = false;

      ws.on('open', () => {
        ws.send(JSON.stringify({
          type: 'subscribe',
          channel: 'risk',
          accountId: 'test-account-id'
        }));
      });

      ws.on('message', (data) => {
        const message = JSON.parse(data.toString());
        
        if (message.type === 'risk_alert' && message.accountId === 'test-account-id') {
          expect(message).toHaveProperty('alertType');
          expect(message).toHaveProperty('severity');
          expect(message).toHaveProperty('message');
          expect(message).toHaveProperty('timestamp');
          expect(message).toHaveProperty('accountId', 'test-account-id');
          riskAlertReceived = true;
          ws.close();
          done();
        }
      });

      ws.on('error', (error) => {
        // Expected to fail until implementation
        expect(error).toBeDefined();
        if (!riskAlertReceived) {
          done();
        }
      });

      setTimeout(() => {
        if (!riskAlertReceived) {
          ws.close();
          done();
        }
      }, 5000);
    });
  });

  describe('Subscription Management', () => {
    it('should handle multiple subscriptions', (done) => {
      // This test will fail until WebSocket subscription management is implemented
      const ws = new WebSocket('ws://localhost:3000/ws');
      let subscriptionsReceived = 0;
      const expectedSubscriptions = 3;

      ws.on('open', () => {
        // Subscribe to multiple channels
        ws.send(JSON.stringify({
          type: 'subscribe',
          channel: 'price',
          symbol: 'BTC/USD'
        }));

        ws.send(JSON.stringify({
          type: 'subscribe',
          channel: 'orderbook',
          symbol: 'BTC/USD'
        }));

        ws.send(JSON.stringify({
          type: 'subscribe',
          channel: 'account',
          accountId: 'test-account-id'
        }));
      });

      ws.on('message', (data) => {
        const message = JSON.parse(data.toString());
        
        if (message.type === 'subscription_confirmed') {
          subscriptionsReceived++;
          
          if (subscriptionsReceived === expectedSubscriptions) {
            ws.close();
            done();
          }
        }
      });

      ws.on('error', (error) => {
        // Expected to fail until implementation
        expect(error).toBeDefined();
        if (subscriptionsReceived < expectedSubscriptions) {
          done();
        }
      });

      setTimeout(() => {
        if (subscriptionsReceived < expectedSubscriptions) {
          ws.close();
          done();
        }
      }, 5000);
    });

    it('should handle unsubscription', (done) => {
      // This test will fail until WebSocket unsubscription is implemented
      const ws = new WebSocket('ws://localhost:3000/ws');
      let unsubscribed = false;

      ws.on('open', () => {
        // Subscribe first
        ws.send(JSON.stringify({
          type: 'subscribe',
          channel: 'price',
          symbol: 'BTC/USD'
        }));

        // Then unsubscribe
        setTimeout(() => {
          ws.send(JSON.stringify({
            type: 'unsubscribe',
            channel: 'price',
            symbol: 'BTC/USD'
          }));
        }, 1000);
      });

      ws.on('message', (data) => {
        const message = JSON.parse(data.toString());
        
        if (message.type === 'unsubscription_confirmed') {
          unsubscribed = true;
          ws.close();
          done();
        }
      });

      ws.on('error', (error) => {
        // Expected to fail until implementation
        expect(error).toBeDefined();
        if (!unsubscribed) {
          done();
        }
      });

      setTimeout(() => {
        if (!unsubscribed) {
          ws.close();
          done();
        }
      }, 5000);
    });
  });
});