builtbykev
cb3237cdce
The pricing Desk showcase hardcoded an alt-line ladder (1.5 A +7.1% / 2.5 A+ +11.4% / 4.5 C -3.8%), QUARTER-KELLY 2.4%, and PARLAY φ 0.34 — a mocked demo selling something we weren't proving. - deskShowcaseService reads the pre-graded snapshot for a real A/B prop's alt-line ladder (prefers the one with the most grade variation — the most compelling real example). Edge per rung shows only when it's a plausible market value; the inflated (model-line)/line artifact on small lines is guarded to "—" rather than shown as a fake +91%. - PARLAY φ is now REAL: the model's same-team correlation (0.34, mirroring the frontend parlayMath team constant) computed for TWO REAL same-team legs, named. No real same-team pair on the board → the tile hides, never an invented number. - QUARTER-KELLY tile is REMOVED: the snapshot has no odds, so a real quarter-Kelly % can't be computed here — a fabricated 2.4% is worse than nothing. Kelly stays a real in-app Desk feature; the showcase just doesn't fake it. - DeskShowcase is now a client component fetching /api/desk-showcase; when the board has no real ladder the whole visuals column hides (real-or-hidden, same law as the hero). The pitch copy is unchanged. 5 service tests. Change-affected suites green, web build exit 0. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
64 lines
3.2 KiB
JavaScript
64 lines
3.2 KiB
JavaScript
'use strict';
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// Item 6 (Truth-Everywhere Part 2) — the Desk showcase renders REAL snapshot
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// data (alt-line ladder + same-team correlation) or hides. No mocked numbers.
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const { getDeskShowcase, __internals } = require('../../src/services/deskShowcaseService');
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const cacheFrom = (map) => async (k) => (k in map ? map[k] : null);
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const grade = (o) => ({
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player_name: o.player, stat_type: o.stat || 'hits', grade: o.grade,
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team: o.team || null, alt_lines: o.alt || [],
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});
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describe('getDeskShowcase', () => {
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test('renders a real A/B ladder; inflated edges are guarded to null', async () => {
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const cacheGet = cacheFrom({ 'snapshot:mlb:latest': { grades: [
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grade({ player: 'Vary', stat: 'strikeouts', grade: 'A', alt: [
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{ line: 4.5, grade: 'A', edge_pct: 8.2 }, { line: 6.5, grade: 'B', edge_pct: 3.1, base: true }, { line: 8.5, grade: 'C', edge_pct: 91.3 },
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] }),
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] } });
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const out = await getDeskShowcase({ cacheGet, sports: ['mlb'] });
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expect(out.available).toBe(true);
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expect(out.ladder.player).toBe('Vary');
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expect(out.ladder.rungs.map((r) => r.grade)).toEqual(['A', 'B', 'C']); // sorted by line
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expect(out.ladder.rungs[0].edge).toBe(8.2); // sane edge kept
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expect(out.ladder.rungs[2].edge).toBeNull(); // 91.3% guarded (artifact, not a market edge)
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expect(out.kelly).toBeNull(); // no odds → never a fabricated %
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});
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test('prefers the ladder with the MOST grade variation (best real example)', async () => {
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const cacheGet = cacheFrom({ 'snapshot:mlb:latest': { grades: [
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grade({ player: 'Flat', grade: 'B', alt: [{ line: 0.5, grade: 'B' }, { line: 1.5, grade: 'B' }] }),
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grade({ player: 'Varies', grade: 'A', alt: [{ line: 0.5, grade: 'A' }, { line: 1.5, grade: 'C' }] }),
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] } });
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const out = await getDeskShowcase({ cacheGet, sports: ['mlb'] });
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expect(out.ladder.player).toBe('Varies');
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});
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test('parlay φ is REAL — the model correlation for two real same-team legs', async () => {
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const cacheGet = cacheFrom({ 'snapshot:mlb:latest': { grades: [
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grade({ player: 'Alice', grade: 'A', team: 'NYY', alt: [{ line: 0.5, grade: 'A' }, { line: 1.5, grade: 'B' }] }),
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grade({ player: 'Bob', grade: 'B', team: 'NYY', alt: [{ line: 0.5, grade: 'B' }, { line: 1.5, grade: 'C' }] }),
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] } });
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const out = await getDeskShowcase({ cacheGet, sports: ['mlb'] });
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expect(out.parlay).toEqual({ value: 0.34, legs: ['Alice', 'Bob'], team: 'NYY' });
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});
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test('no same-team pair → parlay null (never an invented correlation)', async () => {
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const cacheGet = cacheFrom({ 'snapshot:mlb:latest': { grades: [
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grade({ player: 'Solo', grade: 'A', team: 'NYY', alt: [{ line: 0.5, grade: 'A' }, { line: 1.5, grade: 'C' }] }),
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] } });
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const out = await getDeskShowcase({ cacheGet, sports: ['mlb'] });
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expect(out.parlay).toBeNull();
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});
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test('no A/B ladder anywhere → { available:false } (visuals hide)', async () => {
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const cacheGet = cacheFrom({ 'snapshot:mlb:latest': { grades: [
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grade({ player: 'Weak', grade: 'D', alt: [{ line: 0.5, grade: 'D' }] }),
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] } });
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const out = await getDeskShowcase({ cacheGet, sports: ['mlb'] });
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expect(out).toEqual({ available: false });
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});
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});
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