feat(config): add configuration window (#70)

src/main/runtime/current-subtitle-snapshot.test.ts

@@ -0,0 +1,60 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import type { SubtitleData } from '../../types';
+import { resolveCurrentSubtitleForRenderer } from './current-subtitle-snapshot';
+
+function withTiming(payload: SubtitleData): SubtitleData {
+  return {
+    ...payload,
+    startTime: 1,
+    endTime: 2,
+  };
+}
+
+test('renderer current subtitle snapshot reuses cached payload for first paint', async () => {
+  const payload = await resolveCurrentSubtitleForRenderer({
+    currentSubText: '字幕',
+    currentSubtitleData: { text: '字幕', tokens: [{ text: '字' } as never] },
+    withCurrentSubtitleTiming: withTiming,
+  });
+
+  assert.equal(payload.text, '字幕');
+  assert.equal(payload.startTime, 1);
+  assert.deepEqual(payload.tokens, [{ text: '字' }]);
+});
+
+test('renderer current subtitle snapshot does not block on tokenizer for empty text', async () => {
+  const payload = await resolveCurrentSubtitleForRenderer({
+    currentSubText: '',
+    currentSubtitleData: null,
+    withCurrentSubtitleTiming: withTiming,
+  });
+
+  assert.equal(payload.text, '');
+  assert.equal(payload.tokens, null);
+});
+
+test('renderer current subtitle snapshot falls back to raw text for uncached subtitles', async () => {
+  const payload = await resolveCurrentSubtitleForRenderer({
+    currentSubText: 'まだキャッシュされていない字幕',
+    currentSubtitleData: null,
+    withCurrentSubtitleTiming: withTiming,
+  });
+
+  assert.equal(payload.text, 'まだキャッシュされていない字幕');
+  assert.equal(payload.startTime, 1);
+  assert.equal(payload.tokens, null);
+});
+
+test('renderer current subtitle snapshot tokenizes uncached subtitles when tokenizer is available', async () => {
+  const payload = await resolveCurrentSubtitleForRenderer({
+    currentSubText: '新しい字幕',
+    currentSubtitleData: null,
+    withCurrentSubtitleTiming: withTiming,
+    tokenizeSubtitle: async (text) => ({ text, tokens: [{ text: '新' } as never] }),
+  });
+
+  assert.equal(payload.text, '新しい字幕');
+  assert.equal(payload.startTime, 1);
+  assert.deepEqual(payload.tokens, [{ text: '新' }]);
+});