102 lines
3.2 KiB
TypeScript
102 lines
3.2 KiB
TypeScript
import { describe, expect, it, vi } from 'vitest';
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import type { MeasureWidthImpl } from '../types';
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import { MissingFontSpecError } from '../errors';
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import { buildFontSpecKey } from '../fontSpecKey';
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import { measureSliceWidthCached } from '../measureSliceWidthCached';
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import { measureWidthCached } from '../measureWidthCached';
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describe('textWrap width-measurement', () => {
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it('buildFontSpecKey: 缺字段必须报错（简体中文）', () => {
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expect(() => buildFontSpecKey({ fontFamily: 'PingFangSC-Regular', fontWeight: '400' } as any)).toThrow(
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MissingFontSpecError
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);
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});
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it('measureWidthCached: 未提供测量能力 -> approx + WIDTH_UNKNOWN', async () => {
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const res = await measureWidthCached({
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text: 'hello',
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context: 'WIDGET',
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contextProfile: 'WIDGET',
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fontSpec: null,
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measureWidthImpl: undefined,
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});
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expect(res.width).toBeNull();
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expect(res.meta).toEqual({ isApprox: true, reason: 'WIDTH_UNKNOWN' });
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});
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it('measureWidthCached: 同 key 命中缓存（不会重复调用底层测量）', async () => {
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const impl: MeasureWidthImpl = vi.fn(async ({ text }) => text.length);
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const a = await measureWidthCached({
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text: 'abc',
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context: 'APP',
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contextProfile: 'APP|ios',
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fontSpec: { fontFamily: 'PingFangSC-Regular', fontWeight: '400', fontSize: 16 },
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measureWidthImpl: impl,
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});
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const b = await measureWidthCached({
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text: 'abc',
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context: 'APP',
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contextProfile: 'APP|ios',
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fontSpec: { fontFamily: 'PingFangSC-Regular', fontWeight: '400', fontSize: 16 },
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measureWidthImpl: impl,
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});
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expect(a.width).toBe(3);
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expect(b.width).toBe(3);
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expect(impl).toHaveBeenCalledTimes(1);
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});
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it('measureWidthCached: 测量抛错 -> approx + MEASURE_FAILED', async () => {
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const impl: MeasureWidthImpl = vi.fn(async () => {
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throw new Error('boom');
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});
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const res = await measureWidthCached({
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text: 'abc',
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context: 'APP',
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contextProfile: 'APP|ios|throw',
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fontSpec: { fontFamily: 'PingFangSC-Regular', fontWeight: '400', fontSize: 16 },
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measureWidthImpl: impl,
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});
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expect(res.width).toBeNull();
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expect(res.meta).toEqual({ isApprox: true, reason: 'MEASURE_FAILED' });
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});
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it('measureSliceWidthCached: 同 sliceKey 命中缓存', async () => {
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const impl: MeasureWidthImpl = vi.fn(async ({ text }) => text.length);
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const tokens = [
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{ text: 'I', start: 0, end: 1 },
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{ text: 'am', start: 2, end: 4 },
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{ text: 'tired', start: 5, end: 10 },
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];
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const a = await measureSliceWidthCached({
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tokens: tokens as any,
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start: 0,
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end: 2,
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context: 'APP',
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contextProfile: 'APP|ios',
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fontSpec: { fontFamily: 'PingFangSC-Regular', fontWeight: '400', fontSize: 16 },
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measureWidthImpl: impl,
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});
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const b = await measureSliceWidthCached({
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tokens: tokens as any,
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start: 0,
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end: 2,
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context: 'APP',
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contextProfile: 'APP|ios',
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fontSpec: { fontFamily: 'PingFangSC-Regular', fontWeight: '400', fontSize: 16 },
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measureWidthImpl: impl,
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});
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expect(a.width).toBe('I am'.length);
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expect(b.width).toBe('I am'.length);
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expect(impl).toHaveBeenCalledTimes(1);
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});
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});
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