Files
Melo/test/library/playlist_service_test.dart
T
Hermes (Server)andClaude Haiku 4.5 96d9f38a64 feat(playlists): Playlist-Detailansicht mit Drag&Drop-Umsortieren
PlaylistDetailScreen zeigt die Songs einer Playlist (watchPlaylistSongs),
erlaubt Entfernen einzelner Songs und Umsortieren per Drag & Drop
(ReorderableListView.builder). Tippen auf einen Song spielt die Playlist
ab dieser Stelle. Leer-Zustand mit Hinweistext.

Da bestehende position-Werte nach Einfügereihenfolge lückenhaft sein
können, schreibt das Umsortieren nicht nur den verschobenen Song um,
sondern vergibt für die gesamte Playlist neue lückenlose Positionen
(0..N-1): MeloDb.reorderAllPlaylistSongs (in einer Transaktion) +
PlaylistService.reorderAll als dünner Wrapper.

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
2026-08-18 17:19:56 +02:00

65 lines
2.0 KiB
Dart

import 'package:drift/native.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:melo/library/database.dart';
import 'package:melo/library/playlist_service.dart';
void main() {
late MeloDb db;
late PlaylistService service;
setUp(() {
db = MeloDb(NativeDatabase.memory());
service = PlaylistService(db);
});
tearDown(() async => db.close());
test('createPlaylist delegates to db and notifies listeners', () async {
var notified = false;
service.addListener(() => notified = true);
await service.createPlaylist('Road Trip');
final playlists = await db.watchPlaylists().first;
expect(playlists.length, 1);
expect(playlists.first.name, 'Road Trip');
expect(notified, true);
});
test('toggleFavorite delegates to db and notifies listeners', () async {
await db.into(db.songs).insert(SongsCompanion.insert(
id: 'song-1', path: '/a.mp3', title: 'A', dateAddedMs: 0, updatedAtMs: 0,
));
var notified = false;
service.addListener(() => notified = true);
await service.toggleFavorite('song-1');
expect(await db.watchIsFavorite('song-1').first, true);
expect(notified, true);
});
test('reorderAll schreibt lückenlose Positionen 0..N-1 in neuer Reihenfolge', () async {
final playlistId = await db.createPlaylist('Mix');
for (final id in ['song-1', 'song-2', 'song-3']) {
await db.into(db.songs).insert(SongsCompanion.insert(
id: id, path: '/$id.mp3', title: id, dateAddedMs: 0, updatedAtMs: 0,
));
}
// Ursprüngliche (evtl. lückenhafte) Positionen.
await db.addSongToPlaylist(playlistId, 'song-1', 0);
await db.addSongToPlaylist(playlistId, 'song-2', 5);
await db.addSongToPlaylist(playlistId, 'song-3', 9);
var notified = false;
service.addListener(() => notified = true);
await service.reorderAll(playlistId, ['song-3', 'song-1', 'song-2']);
final songs = await db.watchPlaylistSongs(playlistId).first;
expect(songs.map((s) => s.id).toList(), ['song-3', 'song-1', 'song-2']);
expect(notified, true);
});
}