https://degenai.dev/js/chart/__tests__/fixtures/baseline-candles.d4pa93fzrk.js

1/**
2 * Deterministic OHLC fixtures for visual baseline tests (PR 2.3).
3 *
4 * All candles use CLOSE-convention `time` (seconds since epoch, floored to close boundary).
5 * Anchor timestamp is 2024-01-01T00:00:00Z (1704067200s) so generated data is
6 * reproducible across machines and CI runs.
7 *
8 * Each fixture has enough candles for every indicator in the baseline matrix to
9 * render something meaningful (zones, structural levels, monday ranges, etc.).
10 */
11
12// Anchor: 2024-01-01T00:00:00Z
13export const ANCHOR_SECONDS = 1704067200;
14
15const INTERVAL_SECONDS = {
16    '1m': 60,
17    '5m': 300,
18    '1h': 3600,
19    '1d': 86400,
20};
21
22// Seeded PRNG for deterministic candles. Mulberry32 produces uniform [0, 1).
23function mulberry32(seed) {
24    let a = seed >>> 0;
25    return function () {
26        a = (a + 0x6D2B79F5) >>> 0;
27        let t = a;
28        t = Math.imul(t ^ (t >>> 15), t | 1);
29        t ^= t + Math.imul(t ^ (t >>> 7), t | 61);
30        return ((t ^ (t >>> 14)) >>> 0) / 4294967296;
31    };
32}
33
34function generateCandles(interval, count, seed, startPrice) {
35    const step = INTERVAL_SECONDS[interval];
36    if (!step) throw new Error(`unknown interval: ${interval}`);
37    const rand = mulberry32(seed);
38    const out = [];
39    let price = startPrice;
40    for (let i = 0; i < count; i++) {
41        const drift = (rand() - 0.48) * startPrice * 0.01;
42        const open = price;
43        const close = Math.max(1, open + drift);
44        const range = Math.abs(drift) + startPrice * 0.004;
45        const high = Math.max(open, close) + rand() * range;
46        const low = Math.min(open, close) - rand() * range;
47        out.push({
48            time: ANCHOR_SECONDS + i * step,
49            open: +open.toFixed(2),
50            high: +high.toFixed(2),
51            low: +low.toFixed(2),
52            close: +close.toFixed(2),
53        });
54        price = close;
55    }
56    return out;
57}
58
59// Interval fixtures — counts sized so indicators have room to anchor meaningfully.
60// 1m: 360 candles = 6h window
61// 5m: 576 candles = 2d window
62// 1h: 720 candles = 30d window (enough for weekly/monthly anchors)
63// 1d: 400 candles = ~13mo (enough for yearly + multiple monthly anchors)
64export const CANDLES_1M = generateCandles('1m', 360, 0xABCD0001, 45000);
65export const CANDLES_5M = generateCandles('5m', 576, 0xABCD0002, 45000);
66export const CANDLES_1H = generateCandles('1h', 720, 0xABCD0003, 45000);
67export const CANDLES_1D = generateCandles('1d', 400, 0xABCD0004, 45000);
68
69export const FIXTURES = {
70    '1m': { candles: CANDLES_1M, interval: '1m', intervalSeconds: INTERVAL_SECONDS['1m'] },
71    '5m': { candles: CANDLES_5M, interval: '5m', intervalSeconds: INTERVAL_SECONDS['5m'] },
72    '1h': { candles: CANDLES_1H, interval: '1h', intervalSeconds: INTERVAL_SECONDS['1h'] },
73    '1d': { candles: CANDLES_1D, interval: '1d', intervalSeconds: INTERVAL_SECONDS['1d'] },
74};
75
76// Deterministic trade markers for the 1h matrix cell.
77// Placed at specific candle indices so the markers land on real candle times.
78export function tradeMarkersFor1h() {
79    const picks = [30, 80, 140, 260, 380, 520];
80    return picks.map((idx, i) => {
81        const c = CANDLES_1H[idx];
82        return {
83            time: c.time,
84            price: (c.high + c.low) / 2,
85            side: i % 2 === 0 ? 'buy' : 'sell',
86            size: 0.25 + i * 0.15,
87        };
88    });
89}
90
91// Deterministic zone set for the 1h matrix cell.
92export function zonesFor1h() {
93    return [
94        {
95            startTime: CANDLES_1H[120].time,
96            endTime: CANDLES_1H[260].time,
97            topPrice: CANDLES_1H[180].high + 200,
98            bottomPrice: CANDLES_1H[180].low - 200,
99            color: 'rgba(38, 166, 154, 0.18)',
100        },
101        {
102            startTime: CANDLES_1H[400].time,
103            endTime: CANDLES_1H[550].time,
104            topPrice: CANDLES_1H[475].high + 150,
105            bottomPrice: CANDLES_1H[475].low - 150,
106            color: 'rgba(239, 83, 80, 0.18)',
107        },
108    ];
109}
110
111// Deterministic horizontal lines for the 1h matrix cell.
112export function horizontalLinesFor1h() {
113    return [
114        { price: CANDLES_1H[100].close, date: new Date(CANDLES_1H[100].time * 1000).toISOString(), label: 'L1', color: '#B8F84E' },
115        { price: CANDLES_1H[300].close, date: new Date(CANDLES_1H[300].time * 1000).toISOString(), label: 'L2', color: '#F

115FC107' },
116        { price: CANDLES_1H[600].close, date: new Date(CANDLES_1H[600].time * 1000).toISOString(), label: 'L3', color: '#FF6B6B' },
117    ];
118}