gramps
a54149bd7c
Creator: "why is there no meter for when trax is playing?" Routing answer: TRAX rides the desktop loopback, so it already moved the GAME ladder — there was no separate TRAX signal in the mix. But that ladder cannot answer the question a deaf creator actually has: "is the music producing sound at all?" The play glyph cannot either — an open file with a dead decoder still reports Playing. So the player now measures its own output: \`MusicPlayer\` wraps the volume stage in an NAudio \`MeteringSampleProvider\` and exposes \`Level\`; \`ITraxPlayer.Level\` keeps the fake honest. The VM maps it through the same display scale (\`TraxMeterFraction\`), zeroed when not playing, and the TRAX bay carries a 24-segment ladder above its fader. This reverses my earlier "no ladder, nothing honest to show" — the honest thing arrived with a real measurement. TraxBayTests flipped accordingly (it now asserts the ladder AND its source).
95 lines
4.0 KiB
C#
95 lines
4.0 KiB
C#
using System.IO;
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using System.Threading.Tasks;
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using Microsoft.Data.Sqlite;
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using Xunit;
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using ytLive.Services.Audio;
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using ytLive.ViewModels;
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namespace ytLive.Tests;
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/// <summary>2026-10-09 bug: pressing TRAX started the music but the status light stayed off —
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/// and the toggle couldn't pause, because the playing state was never refreshed after Play.
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/// TRAX is a toggle: the light is green while playing, red with a terse scrolling message on
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/// failure, gray when idle.</summary>
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[Collection("RealApp")]
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public sealed class TraxToggleTests
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{
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private sealed class FakePlayer : ITraxPlayer
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{
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public bool Starts = true;
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public event Action<Exception?>? PlaybackEnded;
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public string? TrackName { get; private set; }
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public bool IsPlaying { get; private set; }
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public float LocalGain { get; set; } = 1f;
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public float UserGain { get; set; } = 1f;
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public float Level { get; set; }
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public void Load(string path) => TrackName = Path.GetFileNameWithoutExtension(path);
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public void Play() => IsPlaying = Starts;
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public void Pause() => IsPlaying = false;
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public void Dispose() { }
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public void Fail() { IsPlaying = false; PlaybackEnded?.Invoke(new IOException("device lost")); }
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}
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private readonly RealAppHost _app;
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public TraxToggleTests(RealAppHost app) => _app = app;
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[Fact]
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public async Task Trax_Toggle_Lights_Green_While_Playing_And_Red_With_A_Terse_Error()
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{
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await _app.RunAsync(async () =>
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{
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var tempDb = Path.Combine(Path.GetTempPath(), $"ytLlive-test-{Guid.NewGuid():N}.db");
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var track = Path.Combine(Path.GetTempPath(), $"trax-{Guid.NewGuid():N}.mp3");
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File.WriteAllBytes(track, new byte[16]);
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var player = new FakePlayer();
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MainViewModel.LayoutPathOverride = tempDb;
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MainViewModel.TraxPlayerOverride = () => player;
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var window = new MainWindow();
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var vm = (MainViewModel)window.DataContext;
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try
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{
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await vm.SetTraxTrackAsync(track, play: false);
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Assert.False(vm.IsMusicPlaying);
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var idle = vm.TraxDotBrush.Color;
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vm.TraxLeftClick(); // press: plays → light on
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Assert.True(vm.IsMusicPlaying);
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var playing = vm.TraxDotBrush.Color;
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Assert.NotEqual(idle, playing);
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Assert.Null(vm.TraxError);
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vm.TraxLeftClick(); // press again: pauses → light off
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Assert.False(vm.IsMusicPlaying);
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Assert.Equal(idle, vm.TraxDotBrush.Color);
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player.Starts = false; // press: playback can't start
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vm.TraxLeftClick();
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Assert.False(vm.IsMusicPlaying);
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Assert.NotNull(vm.TraxError);
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Assert.True(vm.TraxError!.Length <= 32, $"error not terse: '{vm.TraxError}'");
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var red = vm.TraxDotBrush.Color;
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Assert.NotEqual(idle, red);
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Assert.NotEqual(playing, red);
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player.Starts = true; // recovery clears the error
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vm.TraxLeftClick();
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Assert.True(vm.IsMusicPlaying);
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Assert.Null(vm.TraxError);
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Assert.Equal(playing, vm.TraxDotBrush.Color);
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player.Fail(); // device lost mid-play
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Assert.False(vm.IsMusicPlaying);
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Assert.Equal(red, vm.TraxDotBrush.Color);
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}
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finally
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{
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window.Close();
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MainViewModel.LayoutPathOverride = null;
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MainViewModel.TraxPlayerOverride = null;
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SqliteConnection.ClearAllPools();
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try { File.Delete(tempDb); File.Delete(track); } catch { /* best-effort cleanup */ }
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}
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});
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}
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}
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