thzxx
ff6df8054c
结构（旧 game/core+engine → 新 engine/ 域）： - engine/kernel/ 时钟/随机/插件协议/fxqueue/timesense/format/urgency/guide/names（原 core） - engine/narrative/ legacy/报告/列传/谱系/年轴（原 core 叙事族） - engine/runtime/ World/creation/pcgen/ApiFacade/capabilities/pluginManager/boot/clocks + Systems/*（12 系统） - engine/sim/ Market（未来 WorldSim 同行） - 旧 game/core、engine/systems、engine/world.ts 等路径全部废弃（无 re-export 兼容层） 验证：35 套件/967 测试全绿（金钟罩三档零漂移=纯搬迁无行为变化） typecheck 0 error
119 lines
3.5 KiB
TypeScript
119 lines
3.5 KiB
TypeScript
import { describe, expect, it } from 'vitest'
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import { Rng, seedToRng } from '../src/renderer/game/engine/kernel/rng'
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describe('Rng.sfc32 特性', () => {
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it('同一种子产生的序列完全一致', () => {
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const a = new Rng(seedToRng('ser1'))
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const b = new Rng(seedToRng('ser1'))
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for (let i = 0; i < 5000; i++) {
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expect(a.next()).toBe(b.next())
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}
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})
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it('不同种子产生不同序列', () => {
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const a = new Rng(seedToRng('seed-a'))
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const b = new Rng(seedToRng('seed-b'))
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let diff = 0
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for (let i = 0; i < 100; i++) {
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if (a.next() !== b.next()) diff++
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}
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expect(diff).toBeGreaterThan(90)
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})
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it('输出始终落在 [0,1)', () => {
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const rng = new Rng(seedToRng('domain'))
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for (let i = 0; i < 20000; i++) {
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const v = rng.next()
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expect(v).toBeGreaterThanOrEqual(0)
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expect(v).toBeLessThan(1)
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}
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})
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it('分布均值接近 0.5（20000 样本）', () => {
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const rng = new Rng(seedToRng('mean'))
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let sum = 0
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const n = 20000
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for (let i = 0; i < n; i++) sum += rng.next()
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const mean = sum / n
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expect(Math.abs(mean - 0.5)).toBeLessThan(0.02)
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})
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it('int 端点全部可取（长抽样覆盖 min 与 max）', () => {
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const rng = new Rng(seedToRng('ends'))
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let minSeen: number | null = null
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let maxSeen: number | null = null
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for (let i = 0; i < 5000; i++) {
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const v = rng.int(1, 6)
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expect(v).toBeGreaterThanOrEqual(1)
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expect(v).toBeLessThanOrEqual(6)
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if (v === 1) minSeen = v
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if (v === 6) maxSeen = v
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}
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expect(minSeen).toBe(1)
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expect(maxSeen).toBe(6)
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})
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it('pick 返回数组内元素', () => {
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const rng = new Rng(seedToRng('pick'))
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const pool = ['a', 'b', 'c']
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for (let i = 0; i < 200; i++) {
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expect(pool).toContain(rng.pick(pool))
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}
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})
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it('pick 空数组抛错（进行防御性约束）', () => {
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const rng = new Rng(seedToRng('empty'))
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expect(() => rng.pick([])).toThrow()
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})
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it('chance 边界行为：p=0 恒否、p=1 恒是', () => {
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const rng = new Rng(seedToRng('chance'))
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for (let i = 0; i < 50; i++) {
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expect(rng.chance(0)).toBe(false)
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expect(rng.chance(1)).toBe(true)
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}
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})
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it('shuffle 保持乱序且不丢元素', () => {
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const rng = new Rng(seedToRng('shuffle'))
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const src = Array.from({ length: 30 }, (_, i) => i)
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const shuffled = rng.shuffle(src)
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expect(shuffled.length).toBe(30)
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expect([...shuffled].sort((a, b) => a - b)).toEqual(src)
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// 30 个元素单次打乱完全与原序相同概率几乎为 0
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expect(shuffled.some((v, i) => v !== src[i])).toBe(true)
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})
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it('between 落在区间内', () => {
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const rng = new Rng(seedToRng('between'))
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for (let i = 0; i < 500; i++) {
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const v = rng.between(2.5, 7.5)
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expect(v).toBeGreaterThanOrEqual(2.5)
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expect(v).toBeLessThanOrEqual(7.5)
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}
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})
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it('getState 返回副本：修改不影响原', () => {
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const rng = new Rng(seedToRng('copy'))
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rng.next()
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const snap = rng.getState()
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snap.a = 999999
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const c = new Rng(rng.getState())
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expect(c.next()).toBe(rng.next())
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})
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it('全零种子被安全修复不会退化为常数', () => {
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const state = { a: 0, b: 0, c: 0, d: 0 }
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const rng = new Rng(state)
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const v1 = rng.next()
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const v2 = rng.next()
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expect(v1).not.toBe(v2)
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})
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it('空字符串种子可稳定初始化', () => {
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const a = new Rng(seedToRng(''))
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const b = new Rng(seedToRng(''))
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expect(a.next()).toBe(b.next())
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})
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})
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