car-interface-android/test/system_controller_test.dart

import 'package:cardash_launcher/data/models/app_entry.dart';
import 'package:cardash_launcher/data/models/system_status.dart';
import 'package:cardash_launcher/data/services/native_bridge.dart';
import 'package:cardash_launcher/features/home/system_controller.dart';
import 'package:flutter_test/flutter_test.dart';

class _MediaPlatform implements LauncherPlatform {
  bool playing = false;
  final List<String> keys = [];

  @override
  Future<List<AppEntry>> listApps() async => const [];

  @override
  Future<void> launchApp({
    required String packageName,
    required String activityName,
  }) async {}

  @override
  Future<bool> isDefaultHome() async => true;

  @override
  Future<bool> requestDefaultHome() async => true;

  @override
  Future<SystemStatus> getStatus() async => const SystemStatus();

  @override
  Future<VolumeInfo> getVolume() async => const VolumeInfo(index: 8, max: 15);

  @override
  Future<void> setVolume(int index) async {}

  @override
  Future<bool> isMusicPlaying() async => playing;

  @override
  Future<bool> sendMediaKey(String action) async {
    keys.add(action);
    if (action == 'play') playing = true;
    if (action == 'pause') playing = false;
    return true;
  }
}

void main() {
  test('pause sends the pause key and clears playing state', () async {
    final platform = _MediaPlatform()..playing = true;
    final controller = SystemController(platform);
    await controller.start();
    addTearDown(controller.dispose);

    expect(controller.isMusicPlaying, isTrue);
    await controller.pauseMusic();
    expect(platform.keys, contains('pause'));
    expect(controller.isMusicPlaying, isFalse);
    controller.stop();
  });

  test('play resumes and reports whether audio started', () async {
    final platform = _MediaPlatform();
    final controller = SystemController(platform);
    await controller.start();
    addTearDown(controller.dispose);

    expect(controller.isMusicPlaying, isFalse);
    expect(await controller.playMusic(), isTrue);
    expect(platform.keys, contains('play'));
    expect(controller.isMusicPlaying, isTrue);
    controller.stop();
  });
}