66 lines
2.5 KiB
TypeScript
66 lines
2.5 KiB
TypeScript
import { describe, expect, it } from 'vitest';
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import { segmentGraphemes } from '../index';
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const REQUIRED_SINGLE_CLUSTER_CASES: Array<{ name: string; input: string }> = [
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{ name: 'ZWJ family', input: '👨👩👧👦' },
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{ name: 'flag', input: '🇸🇬' },
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{ name: 'skin tone', input: '👍🏽' },
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{ name: 'ZWJ + variation', input: '😮💨' },
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{ name: 'combining mark', input: 'e\u0301' }, // é（组合形式）
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];
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describe('textWrap grapheme-segmentation', () => {
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it('基础性质：空字符串 -> []', () => {
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const out = segmentGraphemes('', 'PREFERRED');
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expect(out.clusters).toEqual([]);
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expect(out.clusters.join('')).toBe('');
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});
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it('基础性质：可逆性（clusters.join("") === input）', () => {
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const input = '我好累😮💨';
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const out = segmentGraphemes(input, 'PREFERRED');
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expect(out.clusters.join('')).toBe(input);
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});
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it('基础性质：确定性（同输入同输出）', () => {
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const input = '👨👩👧👦🇸🇬👍🏽😮💨e\u0301';
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const a = segmentGraphemes(input, 'PREFERRED');
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const b = segmentGraphemes(input, 'PREFERRED');
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expect(a).toEqual(b);
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});
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it('必测样例：在 PREFERRED 下必须“不拆”为单个 cluster', () => {
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for (const c of REQUIRED_SINGLE_CLUSTER_CASES) {
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const out = segmentGraphemes(c.input, 'PREFERRED');
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expect(out.clusters.join('')).toBe(c.input);
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expect(out.clusters.length).toBe(1);
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expect(out.clusters[0]).toBe(c.input);
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}
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});
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it('必测样例：在强制 FALLBACK 下必须“不拆”为单个 cluster', () => {
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for (const c of REQUIRED_SINGLE_CLUSTER_CASES) {
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const out = segmentGraphemes(c.input, 'FALLBACK');
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expect(out.meta.strategy).toBe('FALLBACK');
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expect(out.meta.hadFallback).toBe(true);
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expect(out.clusters.join('')).toBe(c.input);
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expect(out.clusters.length).toBe(1);
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expect(out.clusters[0]).toBe(c.input);
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}
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});
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it('跨策略一致性：若 Intl.Segmenter 可用，则 PREFERRED 与 FALLBACK 输出应一致', () => {
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// eslint-disable-next-line @typescript-eslint/no-explicit-any
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const hasIntl = typeof (globalThis as any)?.Intl?.Segmenter === 'function';
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if (!hasIntl) return;
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for (const c of REQUIRED_SINGLE_CLUSTER_CASES) {
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const preferred = segmentGraphemes(c.input, 'PREFERRED');
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const fallback = segmentGraphemes(c.input, 'FALLBACK');
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expect(preferred.clusters).toEqual(fallback.clusters);
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}
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});
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});
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