// 制度级关口单测（回响·涟漪追溯 B）—— 2026-07-20 立。
// 守：①合本表全部不变量(assertInvariants) ②无手游机制 ③加试挂了双证 impactChain、守旧没挂(事层不涟漪)
//     ④反相关不破(制层加试 fate<守旧) ⑤链端点双证/中段标推演(查不实标待补,不编)。
// 跑：node --test test/guankou-zhidu.test.js
import test from 'node:test';
import assert from 'node:assert/strict';
import { assertInvariants, assertNoGameMechanics, ZHIDU_DECISIONS } from '../src/decisions.js';

test('①制度关口合本表全部不变量（assertInvariants CLEAN）', () => {
  assert.deepEqual(assertInvariants(ZHIDU_DECISIONS), [], '制度关口必须合全部不变量');
});

test('②无手游机制', () => {
  assert.deepEqual(assertNoGameMechanics(ZHIDU_DECISIONS), []);
});

test('③加试=制层挂双证 impactChain；守旧=事层不挂(不涟漪)', () => {
  const d = ZHIDU_DECISIONS.find((x) => x.id === 'han-zhidu-chaju-shi');
  assert.ok(d, '察举加试那道题在');
  const jiashi = d.options.find((o) => o.id === 'jiashi');
  const shoujiu = d.options.find((o) => o.id === 'shoujiu');
  assert.equal(jiashi.layer, 'zhi', '加试=制层(真改制度)');
  assert.ok(jiashi.impactChain?.nodes?.length >= 3, '加试挂了一条链');
  assert.equal(shoujiu.layer, 'shi', '守旧=事层');
  assert.ok(!shoujiu.impactChain, '守旧不涟漪 → 不挂链');
});

test('④反相关不破：制层加试 fate < 事层守旧（所念愈深其身愈危）', () => {
  const d = ZHIDU_DECISIONS[0];
  const jiashi = d.options.find((o) => o.id === 'jiashi');
  const shoujiu = d.options.find((o) => o.id === 'shoujiu');
  assert.ok(jiashi.fate.score < shoujiu.fate.score, '制层动了世家命根子,下场更差');
});

test('⑤链:端点双证(kind yuanwen带cite)、中段标推演(kind tuiyan);一路通到1905', () => {
  const chain = ZHIDU_DECISIONS[0].options.find((o) => o.id === 'jiashi').impactChain;
  assert.equal(chain.nodes[0].kind, 'yuanwen', '起点(察举加试132)=原文双证');
  assert.ok(chain.nodes.every((n) => n.cite?.source), '每一环都挂出处(端点双证/待补,中段标推演)');
  assert.ok(chain.nodes.some((n) => n.kind === 'tuiyan'), '中段科举先声=制度史通说,标推演');
  assert.equal(chain.nodes[chain.nodes.length - 1].year, 1905, '涟漪一路亮到科举废(1905)');
});