xfy
aadfed2595
为现代化重构（var→const、拆 IIFE、for→for..of）补行为回归防线。 黑盒驱动 window.__initLightbox，覆盖高风险路径： - 循环闭包捕获 idx（点第 1/2/3 张 counter 显示正确序号） - 点击打开（overlay 创建、origSrc 去 query、caption、单张 counter 隐藏） - 关闭（Esc / 点背景；点图片本身不关） - 图集 gotoIndex 循环边界（首末衔接 + originNode 更新后焦点归还） - 单张图不参与切换 happy-dom 20.10.6 作 devDep，vitest 默认环境改 happy-dom； geometry.test.ts 用 // @vitest-environment node 指令保持纯函数在 node 跑。 23 tests (12 geometry + 11 behavior) 全绿。
88 lines
3.1 KiB
TypeScript
88 lines
3.1 KiB
TypeScript
// @vitest-environment node
|
||
import { describe, it, expect } from 'vitest';
|
||
import { fitCentered, transformFor, originalUrl, type Rect } from './geometry';
|
||
|
||
describe('fitCentered', () => {
|
||
// 大图受 maxW=vw*0.92 / maxH=vh*0.88 约束,scale 取较小者
|
||
it('宽图被视口宽度卡住(横向受限)', () => {
|
||
// 2000x1000 in 1000x800: maxW=920, maxH=704
|
||
// scale = min(920/2000, 704/1000, 1) = min(0.46, 0.704, 1) = 0.46
|
||
const r = fitCentered(2000, 1000, 1000, 800);
|
||
expect(r.w).toBeCloseTo(920, 5);
|
||
expect(r.h).toBeCloseTo(460, 5);
|
||
expect(r.x).toBeCloseTo((1000 - 920) / 2, 5); // 40
|
||
expect(r.y).toBeCloseTo((800 - 460) / 2, 5); // 170
|
||
});
|
||
|
||
it('高图被视口高度卡住(纵向受限)', () => {
|
||
// 1000x2000 in 1000x800: maxW=920, maxH=704
|
||
// scale = min(920/1000, 704/2000, 1) = min(0.92, 0.352, 1) = 0.352
|
||
const r = fitCentered(1000, 2000, 1000, 800);
|
||
expect(r.w).toBeCloseTo(352, 5);
|
||
expect(r.h).toBeCloseTo(704, 5);
|
||
});
|
||
|
||
it('小图不被放大(scale 钳到 1)', () => {
|
||
// 300x200 in 1000x800: scale = min(920/300, 704/200, 1) = 1
|
||
const r = fitCentered(300, 200, 1000, 800);
|
||
expect(r.w).toBe(300);
|
||
expect(r.h).toBe(200);
|
||
expect(r.x).toBeCloseTo((1000 - 300) / 2, 5); // 350
|
||
expect(r.y).toBeCloseTo((800 - 200) / 2, 5); // 300
|
||
});
|
||
|
||
it('正方形图按 maxW/maxH 中较小者缩放', () => {
|
||
// 1000x1000 in 1000x800: maxW=920, maxH=704
|
||
// scale = min(0.92, 0.704, 1) = 0.704
|
||
const r = fitCentered(1000, 1000, 1000, 800);
|
||
expect(r.w).toBeCloseTo(704, 5);
|
||
expect(r.h).toBeCloseTo(704, 5);
|
||
});
|
||
});
|
||
|
||
describe('transformFor', () => {
|
||
it('居中态(base=target):scale=1,translate 到目标左上角', () => {
|
||
const target: Rect = { x: 40, y: 170, w: 920, h: 460 };
|
||
const t = transformFor(target, 920, 460);
|
||
expect(t).toBe('translate(40px,170px) scale(1,1)');
|
||
});
|
||
|
||
it('缩小态(rect 比 base 小):scale<1', () => {
|
||
// 原图位置小,base=居中尺寸 920x460
|
||
const origin: Rect = { x: 100, y: 500, w: 400, h: 200 };
|
||
const t = transformFor(origin, 920, 460);
|
||
// 400/920 = 0.43478260869565216（JS 浮点完整精度）
|
||
expect(t).toBe('translate(100px,500px) scale(0.43478260869565216,0.43478260869565216)');
|
||
});
|
||
|
||
it('baseW=0 守卫:scale 守卫为 1(不产生 NaN/Infinity)', () => {
|
||
const rect: Rect = { x: 0, y: 0, w: 0, h: 0 };
|
||
const t = transformFor(rect, 0, 0);
|
||
expect(t).toBe('translate(0px,0px) scale(1,1)');
|
||
});
|
||
|
||
it('字符串格式为 translate(Xpx,Ypx) scale(SX,SY)', () => {
|
||
const rect: Rect = { x: 10, y: 20, w: 100, h: 50 };
|
||
const t = transformFor(rect, 200, 100);
|
||
expect(t).toMatch(/^translate\(\d+(\.\d+)?px,\d+(\.\d+)?px\) scale\(\d+(\.\d+)?,\d+(\.\d+)?\)$/);
|
||
});
|
||
});
|
||
|
||
describe('originalUrl', () => {
|
||
it('去 query string', () => {
|
||
expect(originalUrl('/uploads/x.webp?w=800')).toBe('/uploads/x.webp');
|
||
});
|
||
|
||
it('无 query 原样返回', () => {
|
||
expect(originalUrl('/uploads/x.webp')).toBe('/uploads/x.webp');
|
||
});
|
||
|
||
it('null 输入返回空串', () => {
|
||
expect(originalUrl(null)).toBe('');
|
||
});
|
||
|
||
it('空串输入返回空串', () => {
|
||
expect(originalUrl('')).toBe('');
|
||
});
|
||
});
|