LehrerApp/LehrerApp.Desktop.Tests/AppLockViewModelTests.cs

using LehrerApp.Core.Services;
using LehrerApp.Desktop.ViewModels;
using Xunit;

namespace LehrerApp.Desktop.Tests;

public sealed class AppLockViewModelTests
{
    [Fact]
    public void Unlock_KorrektesPasswort_HebtDieSperreAuf()
    {
        using var temp = new TempAppData();
        var appLock = new AppLockService(temp.Path);
        appLock.SetPassword("geheim123");
        var vm = new AppLockViewModel(appLock) { IsLocked = true, PasswordAttempt = "geheim123" };

        vm.UnlockCommand.Execute(null);

        Assert.False(vm.IsLocked);
        Assert.Equal("", vm.UnlockError);
    }

    [Fact]
    public void Unlock_FalschesPasswort_BleibtGesperrtUndZeigtFehler()
    {
        using var temp = new TempAppData();
        var appLock = new AppLockService(temp.Path);
        appLock.SetPassword("geheim123");
        var vm = new AppLockViewModel(appLock) { IsLocked = true, PasswordAttempt = "falsch" };

        vm.UnlockCommand.Execute(null);

        Assert.True(vm.IsLocked);
        Assert.NotEqual("", vm.UnlockError);
        Assert.Equal("", vm.PasswordAttempt);
    }

    private sealed class TempAppData : IDisposable
    {
        public string Path { get; } = System.IO.Path.Combine(
            System.IO.Path.GetTempPath(), $"lehrerapp-applockvm-tests-{Guid.NewGuid():N}");

        public TempAppData() => Directory.CreateDirectory(Path);
        public void Dispose() { if (Directory.Exists(Path)) Directory.Delete(Path, recursive: true); }
    }
}