Session 28: Parlay builder, line movement tracker, book comparison — 3 features, zero credits (1623 tests)

2026-06-13 12:37:08 -04:00
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+// Integration: parlay / lines / books routes (Session 28).
+
+const express = require('express');
+const request = require('supertest');
+
+// Redis-backed services are mocked at the redis layer.
+const mockStore = {};
+const mockScan = jest.fn(async () => ['0', []]);
+jest.mock('../../src/utils/redis', () => ({
+  cacheGet: jest.fn(async (k) => (k in mockStore ? mockStore[k] : null)),
+  getRedisClient: () => ({ scan: mockScan, lrange: async () => [], rpush: async () => 1, ltrim: async () => 'OK', expire: async () => 1 }),
+  isDegraded: () => false,
+}));
+
+function mount(routePath, file) {
+  delete require.cache[require.resolve(file)];
+  const app = express();
+  app.use(express.json());
+  app.use(routePath, require(file));
+  return app;
+}
+
+beforeEach(() => {
+  for (const k of Object.keys(mockStore)) delete mockStore[k];
+  jest.clearAllMocks();
+});
+
+describe('POST /api/parlay/calculate', () => {
+  const app = () => mount('/api/parlay', '../../src/routes/parlay');
+
+  test('returns combined odds + grade for valid legs', async () => {
+    const res = await request(app()).post('/api/parlay/calculate').send({
+      legs: [
+        { player: 'A', stat: 'points', odds: 100, grade: 'A', gameId: 'g1' },
+        { player: 'B', stat: 'hits', odds: 100, grade: 'A', gameId: 'g2' },
+      ],
+    });
+    expect(res.status).toBe(200);
+    expect(res.body.combinedOdds).toBe(300); // 2×2 = 4.0 → +300
+    expect(res.body.combinedGrade).toBeDefined();
+  });
+
+  test('empty legs → 400', async () => {
+    const res = await request(app()).post('/api/parlay/calculate').send({ legs: [] });
+    expect(res.status).toBe(400);
+  });
+
+  test('suggestions endpoint returns combos', async () => {
+    const props = [
+      { player: 'A', stat: 'points', odds: -110, grade: 'A', gameId: 'g1' },
+      { player: 'B', stat: 'hits', odds: -110, grade: 'A', gameId: 'g2' },
+      { player: 'C', stat: 'goals', odds: -110, grade: 'B', gameId: 'g3' },
+    ];
+    const res = await request(app()).post('/api/parlay/suggestions').send({ props, legs: 3, max: 1 });
+    expect(res.status).toBe(200);
+    expect(res.body.suggestions).toHaveLength(1);
+  });
+});
+
+describe('GET /api/lines/:sport/movers', () => {
+  const app = () => mount('/api/lines', '../../src/routes/lineMovement');
+
+  test('empty when no snapshots cached', async () => {
+    const res = await request(app()).get('/api/lines/mlb/movers');
+    expect(res.status).toBe(200);
+    expect(res.body.movers).toEqual([]);
+  });
+
+  test('unsupported sport → 404', async () => {
+    const res = await request(app()).get('/api/lines/cricket/movers');
+    expect(res.status).toBe(404);
+  });
+});
+
+describe('GET /api/books/:sport', () => {
+  const app = () => mount('/api/books', '../../src/routes/bookComparison');
+
+  test('returns best lines from cached props', async () => {
+    mockStore[`odds:nba:${new Date().toISOString().split('T')[0]}`] = {
+      props: [
+        {
+          player: 'Wemby', stat_type: 'points',
+          lines: [
+            { book: 'dk', over_odds: -110 },
+            { book: 'fd', over_odds: -105 },
+          ],
+        },
+      ],
+    };
+    const res = await request(app()).get('/api/books/nba');
+    expect(res.status).toBe(200);
+    expect(res.body.bestLines).toHaveLength(1);
+    expect(res.body.bestLines[0].bestBook).toBe('fd');
+  });
+
+  test('empty when no cached props', async () => {
+    const res = await request(app()).get('/api/books/nba');
+    expect(res.status).toBe(200);
+    expect(res.body.bestLines).toEqual([]);
+  });
+
+  test('unsupported sport → 404', async () => {
+    const res = await request(app()).get('/api/books/cricket');
+    expect(res.status).toBe(404);
+  });
+});