Files
Melo/test/library/song_grouping_test.dart
T
Hermes (Server)andClaude Haiku 4.5 58ceb42769 feat(library): add Artist and Album browsing tabs
- Library screen now has a TabBar (Alle / Künstler / Alben) inside a
  DefaultTabController; scan/permission/error banners stay above the
  TabBarView so they remain visible regardless of the active sub-tab
- New lib/library/song_grouping.dart: pure, unit-tested functions
  groupByArtist/groupByAlbum (null artist/album -> "Unbekannt" /
  "Unbekanntes Album", alphabetically sorted) plus albumArtistLabel
  ("Verschiedene Interpreten" when an album mixes artists)
- New lib/library/artist_list.dart + album_list.dart: StreamBuilder on
  MeloDb.watchSongs(), grouped client-side, tapping a row pushes a
  SongList screen for that artist/album; album rows show a CoverImage
  thumbnail from the first song's coverPath
- Existing "Alle" tab content (recently-added strip, full song list,
  empty state) preserved unchanged, moved into _AllSongsTab

Genre browsing is intentionally out of scope: the Songs table has no
genre column and neither scanner extracts genre metadata — needs a
schema migration + scanner work in a future task.

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
2026-08-18 17:34:41 +02:00

113 lines
3.0 KiB
Dart

import 'package:flutter_test/flutter_test.dart';
import 'package:melo/library/database.dart';
import 'package:melo/library/song_grouping.dart';
Song _song({
required String id,
required String title,
String? artist,
String? album,
}) {
return Song(
id: id,
path: '/$id.mp3',
title: title,
artist: artist,
album: album,
dateAddedMs: 0,
updatedAtMs: 0,
deleted: false,
);
}
void main() {
group('groupByArtist', () {
test('gruppiert mehrere Künstler getrennt', () {
final songs = [
_song(id: '1', title: 'A', artist: 'Bob'),
_song(id: '2', title: 'B', artist: 'Alice'),
_song(id: '3', title: 'C', artist: 'Alice'),
];
final grouped = groupByArtist(songs);
expect(grouped.keys, ['Alice', 'Bob']);
expect(grouped['Alice']!.length, 2);
expect(grouped['Bob']!.length, 1);
});
test('gruppiert Songs ohne Künstler unter "Unbekannt"', () {
final songs = [
_song(id: '1', title: 'A', artist: null),
_song(id: '2', title: 'B', artist: null),
];
final grouped = groupByArtist(songs);
expect(grouped.keys, [unbekannterKuenstler]);
expect(grouped[unbekannterKuenstler]!.length, 2);
});
test('sortiert Künstlernamen alphabetisch', () {
final songs = [
_song(id: '1', title: 'A', artist: 'Zebra'),
_song(id: '2', title: 'B', artist: 'Anton'),
_song(id: '3', title: 'C', artist: 'Mitte'),
];
final grouped = groupByArtist(songs);
expect(grouped.keys.toList(), ['Anton', 'Mitte', 'Zebra']);
});
test('leere Liste ergibt leere Map', () {
expect(groupByArtist(const []), isEmpty);
});
});
group('groupByAlbum', () {
test('gruppiert mehrere Alben getrennt', () {
final songs = [
_song(id: '1', title: 'A', album: 'Best Of'),
_song(id: '2', title: 'B', album: 'Anthology'),
];
final grouped = groupByAlbum(songs);
expect(grouped.keys.toList(), ['Anthology', 'Best Of']);
});
test('gruppiert Songs ohne Album unter "Unbekanntes Album"', () {
final songs = [_song(id: '1', title: 'A', album: null)];
final grouped = groupByAlbum(songs);
expect(grouped.keys, [unbekanntesAlbum]);
});
test('leere Liste ergibt leere Map', () {
expect(groupByAlbum(const []), isEmpty);
});
});
group('albumArtistLabel', () {
test('zeigt gemeinsamen Künstler, wenn alle Songs von ihm stammen', () {
final songs = [
_song(id: '1', title: 'A', artist: 'Alice', album: 'X'),
_song(id: '2', title: 'B', artist: 'Alice', album: 'X'),
];
expect(albumArtistLabel(songs), 'Alice');
});
test('zeigt "Verschiedene Interpreten" bei unterschiedlichen Künstlern', () {
final songs = [
_song(id: '1', title: 'A', artist: 'Alice', album: 'X'),
_song(id: '2', title: 'B', artist: 'Bob', album: 'X'),
];
expect(albumArtistLabel(songs), 'Verschiedene Interpreten');
});
});
}