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plezy/test/mpv/player_android_buffer_size_test.dart
T

101 lines
4.1 KiB
Dart

import 'package:flutter/services.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:plezy/mpv/player/platform/player_android.dart';
import 'package:plezy/services/settings_service.dart';
import '../test_helpers/mock_player_channels.dart';
import '../test_helpers/prefs.dart';
/// Drives the Buffer Size contract between Dart and `ExoPlayerPlugin` (#1618).
///
/// Auto still sends `demuxer-max-bytes`, because mpv's demuxer shares the property and the
/// plugin's mpv fallback replays it. Only `bufferSizeAuto` tells the native side that the
/// value was derived for the demuxer and that `LoadControlPolicy` should size ExoPlayer's
/// allocator instead. Getting that flag wrong is silent: playback still works, just with the
/// 64MB cap that starves a high-bitrate passthrough track.
Future<MethodCall> _captureInitialize({required Future<void> Function(PlayerAndroid player) configure}) async {
late MethodCall initialize;
await withMockPlayerChannels(
methodChannelName: 'com.plezy/exo_player',
eventChannelName: 'com.plezy/exo_player/events',
methodHandler: (call) async {
if (call.method == 'initialize') initialize = call;
return call.method == 'initialize' ? true : null;
},
testBody: () async {
final player = PlayerAndroid();
try {
await configure(player);
// requestAudioFocus is what actually triggers native initialize; the screen relies
// on that ordering so every setProperty above is cached first.
await player.requestAudioFocus();
} finally {
await player.dispose();
}
},
);
return initialize;
}
void main() {
TestWidgetsFlutterBinding.ensureInitialized();
setUp(() async {
resetSharedPreferencesForTest();
SettingsService.resetForTesting();
await SettingsService.getInstance();
});
test('Auto tells the native side to size its own LoadControl target', () async {
final initialize = await _captureInitialize(
configure: (player) async {
// What video_player_screen sends on Auto for a 512MB-heap device.
await player.setProperty('demuxer-max-bytes', '${64 * 1024 * 1024}');
await player.setProperty('demuxer-max-bytes-auto', 'yes');
},
);
final args = initialize.arguments as Map<Object?, Object?>;
expect(args['bufferSizeAuto'], isTrue);
// Still forwarded: the plugin's mpv fallback replays it as a real demuxer property.
expect(args['bufferSizeBytes'], 64 * 1024 * 1024);
});
test('an explicit Buffer Size choice is never overridden by Auto sizing', () async {
final initialize = await _captureInitialize(
configure: (player) async {
await player.setProperty('demuxer-max-bytes', '${128 * 1024 * 1024}');
},
);
final args = initialize.arguments as Map<Object?, Object?>;
expect(args['bufferSizeAuto'], isFalse);
expect(args['bufferSizeBytes'], 128 * 1024 * 1024);
});
test('an unknown heap leaves no byte cap, so the native side still picks Auto', () async {
// video_player_screen skips the whole tier block when getHeapSize() fails, so neither
// property is ever set. bufferSizeBytes must stay null rather than defaulting to a
// number the native side would treat as a deliberate choice.
final initialize = await _captureInitialize(configure: (_) async {});
final args = initialize.arguments as Map<Object?, Object?>;
expect(args['bufferSizeAuto'], isFalse);
expect(args['bufferSizeBytes'], isNull);
// Playback Buffer is also init-only: when absent, native must receive an explicit Auto wire value.
expect(args['bufferTier'], 'auto');
});
test('an explicit Playback Buffer tier reaches native initialization', () async {
final initialize = await _captureInitialize(
configure: (player) async {
await player.setProperty('exo-buffer-tier', PlaybackBufferTier.extraLarge.nativeValue);
},
);
final args = initialize.arguments as Map<Object?, Object?>;
// The synthetic property is init-only; losing it would silently restore the native Auto tier.
expect(args['bufferTier'], 'extra_large');
});
}