fix(subtitle-ws): send tokenized payloads to texthooker

src/core/services/subtitle-ws.test.ts

@@ -0,0 +1,89 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { serializeSubtitleMarkup, serializeSubtitleWebsocketMessage } from './subtitle-ws';
+import { PartOfSpeech, type SubtitleData } from '../../types';
+
+const frequencyOptions = {
+  enabled: true,
+  topX: 1000,
+  mode: 'banded' as const,
+};
+
+test('serializeSubtitleMarkup escapes plain text and preserves line breaks', () => {
+  const payload: SubtitleData = {
+    text: 'a < b\nx & y',
+    tokens: null,
+  };
+
+  assert.equal(serializeSubtitleMarkup(payload, frequencyOptions), 'a &lt; b<br>x &amp; y');
+});
+
+test('serializeSubtitleMarkup includes known, n+1, jlpt, and frequency classes', () => {
+  const payload: SubtitleData = {
+    text: 'ignored',
+    tokens: [
+      {
+        surface: '既知',
+        reading: '',
+        headword: '',
+        startPos: 0,
+        endPos: 2,
+        partOfSpeech: PartOfSpeech.other,
+        isMerged: false,
+        isKnown: true,
+        isNPlusOneTarget: false,
+      },
+      {
+        surface: '新語',
+        reading: '',
+        headword: '',
+        startPos: 2,
+        endPos: 4,
+        partOfSpeech: PartOfSpeech.other,
+        isMerged: false,
+        isKnown: false,
+        isNPlusOneTarget: true,
+      },
+      {
+        surface: '級',
+        reading: '',
+        headword: '',
+        startPos: 4,
+        endPos: 5,
+        partOfSpeech: PartOfSpeech.other,
+        isMerged: false,
+        isKnown: false,
+        isNPlusOneTarget: false,
+        jlptLevel: 'N3',
+      },
+      {
+        surface: '頻度',
+        reading: '',
+        headword: '',
+        startPos: 5,
+        endPos: 7,
+        partOfSpeech: PartOfSpeech.other,
+        isMerged: false,
+        isKnown: false,
+        isNPlusOneTarget: false,
+        frequencyRank: 10,
+      },
+    ],
+  };
+
+  const markup = serializeSubtitleMarkup(payload, frequencyOptions);
+  assert.match(markup, /word word-known/);
+  assert.match(markup, /word word-n-plus-one/);
+  assert.match(markup, /word word-jlpt-n3/);
+  assert.match(markup, /word word-frequency-band-1/);
+});
+
+test('serializeSubtitleWebsocketMessage emits sentence payload', () => {
+  const payload: SubtitleData = {
+    text: '字幕',
+    tokens: null,
+  };
+
+  const raw = serializeSubtitleWebsocketMessage(payload, frequencyOptions);
+  assert.deepEqual(JSON.parse(raw), { sentence: '字幕' });
+});