feat: port scenario 903 select-pool flow

2026-07-30 23:27:59 +00:00
parent 9bd057456b
commit 115218ded8
80 changed files with 6859 additions and 48 deletions
@@ -0,0 +1,75 @@
+import fs from 'node:fs/promises';
+import path from 'node:path';
+
+import { describe, expect, it } from 'vitest';
+
+import { LiteHashDRBG, RandUtil } from '@sammo-ts/common';
+
+import {
+    buildSelectPoolSeed,
+    claimWeightedSelectionCandidates,
+} from '../src/services/selectPool.js';
+
+interface PoolResource {
+    data: Array<
+        [
+            string,
+            number,
+            number,
+            number,
+            string,
+            [number, number, number, number, number],
+            0 | 1,
+            string,
+        ]
+    >;
+}
+
+const loadWeightedRows = async (): Promise<Array<[{ id: number }, number]>> => {
+    const filePath = path.resolve(
+        import.meta.dirname,
+        '../../../resources/general-pool/SPoolUnderU30.json'
+    );
+    const resource = JSON.parse(await fs.readFile(filePath, 'utf8')) as PoolResource;
+    return resource.data.map((row, index) => [
+        { id: index + 1 },
+        row[5].reduce((sum, value) => sum + value, 0),
+    ]);
+};
+
+const drawVector = async (
+    hiddenSeed: string
+): Promise<{ selected: number[]; draws: number[] }> => {
+    const weighted = await loadWeightedRows();
+    const now = new Date('2026-07-30T03:34:56.000Z');
+    const draws: number[] = [];
+    const selected = await claimWeightedSelectionCandidates({
+        weighted,
+        rng: new RandUtil(new LiteHashDRBG(buildSelectPoolSeed(hiddenSeed, 42, now))),
+        count: 14,
+        claim: async () => true,
+        onDraw: (candidate) => draws.push(candidate.id),
+    });
+    return { selected: selected.map((candidate) => candidate.id), draws };
+};
+
+describe('select pool Ref RNG parity', () => {
+    it('uses the legacy seed serialization and fixed UnderS30 draw vector', async () => {
+        const now = new Date('2026-07-30T03:34:56.000Z');
+        expect(buildSelectPoolSeed('vector-hidden', 42, now)).toBe(
+            'str(13,vector-hidden)|str(10,selectPool)|int(42)|str(19,2026-07-30 12:34:56)'
+        );
+
+        await expect(drawVector('vector-hidden')).resolves.toEqual({
+            selected: [72, 1283, 110, 1659, 608, 1408, 1543, 1573, 1096, 1081, 278, 1256, 872, 1369],
+            draws: [72, 1283, 110, 1659, 608, 1408, 1543, 1573, 1096, 1081, 278, 1256, 872, 1369],
+        });
+    });
+
+    it('consumes duplicate draws without removing the candidate from the weighted pool', async () => {
+        await expect(drawVector('vector-hidden-28')).resolves.toEqual({
+            selected: [314, 865, 1485, 1382, 110, 550, 27, 368, 399, 1298, 152, 39, 189, 760],
+            draws: [314, 865, 1485, 1382, 110, 550, 27, 368, 399, 1298, 27, 152, 39, 189, 760],
+        });
+    });
+});