Windows update (#49)

src/renderer/yomitan-popup.test.ts

@@ -1,6 +1,11 @@
 import test from 'node:test';
 import assert from 'node:assert/strict';
-import { YOMITAN_LOOKUP_EVENT, registerYomitanLookupListener } from './yomitan-popup.js';
+import {
+  YOMITAN_LOOKUP_EVENT,
+  YOMITAN_POPUP_VISIBLE_HOST_SELECTOR,
+  isYomitanPopupVisible,
+  registerYomitanLookupListener,
+} from './yomitan-popup.js';
 
 test('registerYomitanLookupListener forwards the SubMiner Yomitan lookup event', () => {
   const target = new EventTarget();
@@ -16,3 +21,12 @@ test('registerYomitanLookupListener forwards the SubMiner Yomitan lookup event',
 
   assert.deepEqual(calls, ['lookup']);
 });
+
+test('isYomitanPopupVisible falls back to querySelector when querySelectorAll is unavailable', () => {
+  const root = {
+    querySelector: (selector: string) =>
+      selector === YOMITAN_POPUP_VISIBLE_HOST_SELECTOR ? ({} as Element) : null,
+  } as ParentNode;
+
+  assert.equal(isYomitanPopupVisible(root), true);
+});