LlamaCasty/ytLive.Tests/TransitionPickerTests.cs

using System;
using System.ComponentModel;
using Xunit;
using ytLive.Services;
using ytLive.ViewModels;

namespace ytLive.Tests;

/// <summary>
/// The App Settings transition picker drives the view model: type and length changes
/// notify the bound controls.
/// </summary>
[Collection("RealApp")]
public sealed class TransitionPickerTests
{
    private readonly RealAppHost _app;

    public TransitionPickerTests(RealAppHost app) => _app = app;

    [Fact]
    public void Transition_Type_And_Length_Notify_The_Settings_Picker()
    {
        _app.Run(Run);
    }

    private static void Run()
    {
        var tempDb = System.IO.Path.Combine(System.IO.Path.GetTempPath(), $"ytLlive-transition-{Guid.NewGuid():N}.db");
        MainViewModel.LayoutPathOverride = tempDb;
        try
        {
            using (var schema = new LayoutStore(tempDb)) { }
            Microsoft.Data.Sqlite.SqliteConnection.ClearAllPools();

            var vm = new MainViewModel();
            var raised = new System.Collections.Generic.List<string>();
            ((INotifyPropertyChanged)vm).PropertyChanged += (_, e) => raised.Add(e.PropertyName ?? "");

            vm.SelectedTransitionType = TransitionType.Move;
            vm.TransitionDurationMs = 750;

            Assert.Equal(TransitionType.Move, vm.SelectedTransitionType);
            Assert.Equal(750, vm.TransitionDurationMs);
            Assert.Contains(nameof(MainViewModel.SelectedTransitionType), raised);
            Assert.Contains(nameof(MainViewModel.TransitionDurationMs), raised);
        }
        finally
        {
            MainViewModel.LayoutPathOverride = null;
            Microsoft.Data.Sqlite.SqliteConnection.ClearAllPools();
            try { System.IO.File.Delete(tempDb); } catch { }
        }
    }
}