feat(core): add Electron runtime, services, and app composition

src/core/services/mpv-control.test.ts

@@ -0,0 +1,64 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import {
+  playNextSubtitleRuntime,
+  replayCurrentSubtitleRuntime,
+  sendMpvCommandRuntime,
+  setMpvSubVisibilityRuntime,
+  showMpvOsdRuntime,
+} from './mpv';
+
+test('showMpvOsdRuntime sends show-text when connected', () => {
+  const commands: (string | number)[][] = [];
+  showMpvOsdRuntime(
+    {
+      connected: true,
+      send: ({ command }) => {
+        commands.push(command);
+      },
+    },
+    'hello',
+  );
+  assert.deepEqual(commands, [['show-text', 'hello', '3000']]);
+});
+
+test('showMpvOsdRuntime logs fallback when disconnected', () => {
+  const logs: string[] = [];
+  showMpvOsdRuntime(
+    {
+      connected: false,
+      send: () => {},
+    },
+    'hello',
+    (line) => {
+      logs.push(line);
+    },
+  );
+  assert.deepEqual(logs, ['OSD (MPV not connected): hello']);
+});
+
+test('mpv runtime command wrappers call expected client methods', () => {
+  const calls: string[] = [];
+  const client = {
+    connected: true,
+    send: ({ command }: { command: (string | number)[] }) => {
+      calls.push(`send:${command.join(',')}`);
+    },
+    replayCurrentSubtitle: () => {
+      calls.push('replay');
+    },
+    playNextSubtitle: () => {
+      calls.push('next');
+    },
+    setSubVisibility: (visible: boolean) => {
+      calls.push(`subVisible:${visible}`);
+    },
+  };
+
+  replayCurrentSubtitleRuntime(client);
+  playNextSubtitleRuntime(client);
+  sendMpvCommandRuntime(client, ['script-message', 'x']);
+  setMpvSubVisibilityRuntime(client, false);
+
+  assert.deepEqual(calls, ['replay', 'next', 'send:script-message,x', 'subVisible:false']);
+});