Enhance AniList character dictionary sync and subtitle features (#15)

src/main/runtime/mpv-proxy-osd.test.ts

@@ -0,0 +1,33 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import { resolveProxyCommandOsdRuntime } from './mpv-proxy-osd';
+
+function createClient() {
+  return {
+    connected: true,
+    requestProperty: async (name: string) => {
+      if (name === 'sid') return 3;
+      if (name === 'secondary-sid') return 8;
+      if (name === 'track-list') {
+        return [
+          { id: 3, type: 'sub', title: 'Japanese', selected: true, external: false },
+          { id: 8, type: 'sub', title: 'English Commentary', external: true },
+        ];
+      }
+      return null;
+    },
+  };
+}
+
+test('resolveProxyCommandOsdRuntime formats the active primary subtitle track label', async () => {
+  const result = await resolveProxyCommandOsdRuntime(['cycle', 'sid'], () => createClient());
+  assert.equal(result, 'Subtitle track: Internal #3 - Japanese (active)');
+});
+
+test('resolveProxyCommandOsdRuntime formats the active secondary subtitle track label', async () => {
+  const result = await resolveProxyCommandOsdRuntime(
+    ['set_property', 'secondary-sid', 'auto'],
+    () => createClient(),
+  );
+  assert.equal(result, 'Secondary subtitle track: External #8 - English Commentary');
+});