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refactor(player): centralize chapter traversal

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This commit is contained in:
edde746
2026-07-12 08:42:20 +02:00
parent 9da047de70
commit cdec9d1514
5 changed files with 69 additions and 54 deletions
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test/media/media_source_info_test.dart
+34
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@@ -3,6 +3,40 @@ import 'package:plezy/media/media_source_info.dart';
import 'package:plezy/utils/track_label_builder.dart';
void main() {
group('MediaChapter traversal', () {
final chapters = [
MediaChapter(id: 1, startTimeOffset: 0, title: 'One'),
MediaChapter(id: 2, startTimeOffset: 10000, title: 'Two'),
MediaChapter(id: 3, startTimeOffset: 20000, title: 'Three'),
];
test('forward traversal uses the first strictly later chapter', () {
expect(MediaChapter.seekTargetIndex(const Duration(milliseconds: 9999), chapters, forward: true), 1);
expect(MediaChapter.seekTargetIndex(const Duration(milliseconds: 10000), chapters, forward: true), 2);
expect(MediaChapter.seekTargetIndex(const Duration(milliseconds: 20000), chapters, forward: true), isNull);
});
test('previous traversal preserves the strict three-second restart threshold', () {
expect(MediaChapter.seekTargetIndex(const Duration(milliseconds: 13000), chapters, forward: false), 0);
expect(MediaChapter.seekTargetIndex(const Duration(milliseconds: 13001), chapters, forward: false), 1);
expect(MediaChapter.seekTargetIndex(const Duration(milliseconds: 3000), chapters, forward: false), isNull);
});
test('handles empty chapters and null starts', () {
expect(MediaChapter.seekTargetIndex(Duration.zero, const [], forward: true), isNull);
final missingStart = [MediaChapter(id: 1), MediaChapter(id: 2, startTimeOffset: 5000)];
expect(MediaChapter.seekTargetIndex(Duration.zero, missingStart, forward: true), 1);
expect(MediaChapter.seekTargetIndex(const Duration(milliseconds: 3001), missingStart, forward: false), 0);
});
test('indexAtPosition uses start-inclusive and end-exclusive ranges', () {
expect(MediaChapter.indexAtPosition(Duration.zero, chapters), 0);
expect(MediaChapter.indexAtPosition(const Duration(milliseconds: 9999), chapters), 0);
expect(MediaChapter.indexAtPosition(const Duration(milliseconds: 10000), chapters), 1);
expect(MediaChapter.indexAtPosition(const Duration(hours: 1), chapters), 2);
});
});
group('MediaSubtitleTrack label', () {
test('language leads; a bare "Forced" title folds into the suffix', () {
final track = MediaSubtitleTrack(