更新换行算法和APP-PUSH

client/src/features/textWrap/breakpoints/__tests__/generateBreakpoints.test.ts

@@ -0,0 +1,98 @@
+import { describe, expect, it } from 'vitest';
+
+import { generateBreakpoints } from '../index';
+
+function t(text: string, start: number): { text: string; start: number; end: number } {
+  return { text, start, end: start + text.length };
+}
+
+describe('textWrap breakpoint-candidates', () => {
+  it('EN: tokens=[I,am,so,tired] -> pos=[1,2,3]（升序）', () => {
+    const tokens = [t('I', 0), t('am', 2), t('so', 5), t('tired', 8)];
+    const { breakpoints, meta } = generateBreakpoints({
+      tokens: tokens as any,
+      lang: 'EN',
+      maxLines: 2,
+      config: { tcMaxCandidateBreaks: 80, tcPunctuations: ['，', '。'], balanceRange: 3 },
+    });
+
+    expect(breakpoints.map((b) => b.pos)).toEqual([1, 2, 3]);
+    expect(meta.originalCount).toBe(3);
+    expect(meta.finalCount).toBe(3);
+  });
+
+  it('TC: 标点后断点（，）应生成 pos=i+1', () => {
+    const tokens = [t('我', 0), t('好', 1), t('累', 2), t('，', 3), t('😮‍💨', 4)];
+    const { breakpoints } = generateBreakpoints({
+      tokens: tokens as any,
+      lang: 'TC',
+      maxLines: 2,
+      config: { tcMaxCandidateBreaks: 80, tcPunctuations: ['，'], balanceRange: 0 },
+    });
+
+    expect(breakpoints.some((b) => b.kind === 'PUNCT' && b.pos === 4)).toBe(true);
+  });
+
+  it('TC: forbiddenBreakRanges（闭区间）命中必须剔除（含 start/end）', () => {
+    const tokens = [t('我', 0), t('好', 1), t('累', 2), t('，', 3), t('😮‍💨', 4)];
+    const { breakpoints } = generateBreakpoints({
+      tokens: tokens as any,
+      lang: 'TC',
+      maxLines: 2,
+      constraints: { forbiddenBreakRanges: [{ start: 4, end: 4 }] },
+      config: { tcMaxCandidateBreaks: 80, tcPunctuations: ['，'], balanceRange: 0 },
+    });
+
+    expect(breakpoints.some((b) => b.pos === 4)).toBe(false);
+  });
+
+  it('TC: 去重规则：同 pos 优先保留 priority 更高者；同 priority 按 kind 序', () => {
+    // 构造：同一个 pos=2 同时来自 SPACE(priority=20) 和 BALANCE(priority=5)，必须保留 SPACE
+    const tokens = [t('我', 0), t(' ', 1), t('好', 2)];
+    const { breakpoints } = generateBreakpoints({
+      tokens: tokens as any,
+      lang: 'TC',
+      maxLines: 2,
+      config: { tcMaxCandidateBreaks: 80, tcPunctuations: [], balanceRange: 2 },
+    });
+
+    const b2 = breakpoints.find((b) => b.pos === 2);
+    expect(b2?.kind).toBe('SPACE');
+    expect(b2?.priority).toBe(20);
+  });
+
+  it('TC: 裁剪上限生效且输出按 pos 升序（确定性）', () => {
+    const tokens = Array.from({ length: 60 }).map((_, i) => t('哈', i));
+    const res = generateBreakpoints({
+      tokens: tokens as any,
+      lang: 'TC',
+      maxLines: 3,
+      config: { tcMaxCandidateBreaks: 8, tcPunctuations: [], balanceRange: 6 },
+    });
+
+    expect(res.breakpoints.length).toBe(8);
+    // pos 升序
+    for (let i = 1; i < res.breakpoints.length; i++) {
+      expect(res.breakpoints[i]!.pos).toBeGreaterThanOrEqual(res.breakpoints[i - 1]!.pos);
+    }
+    // 确定性
+    const res2 = generateBreakpoints({
+      tokens: tokens as any,
+      lang: 'TC',
+      maxLines: 3,
+      config: { tcMaxCandidateBreaks: 8, tcPunctuations: [], balanceRange: 6 },
+    });
+    expect(res).toEqual(res2);
+  });
+
+  it('边界：N<=1 时不输出任何候选断点', () => {
+    const { breakpoints } = generateBreakpoints({
+      tokens: [t('我', 0)] as any,
+      lang: 'TC',
+      maxLines: 2,
+      config: { tcMaxCandidateBreaks: 80, tcPunctuations: ['，'], balanceRange: 3 },
+    });
+    expect(breakpoints).toEqual([]);
+  });
+});
+