LehrerApp/LehrerApp.Tests/SchoolCalendarSettingsServiceTests.cs

using LehrerApp.Core.Models;
using LehrerApp.Core.Services;
using Xunit;

namespace LehrerApp.Tests;

public sealed class SchoolCalendarSettingsServiceTests
{
    [Fact]
    public void NeueKonfiguration_HatNordrheinWestfalenAlsStandard()
    {
        using var temp = new TempAppData();
        var service = new SchoolCalendarSettingsService(temp.Path);

        Assert.Equal(GermanState.NW, service.State);
    }

    [Fact]
    public void SetState_WirdUeberNeueInstanzHinwegPersistiert()
    {
        using var temp = new TempAppData();
        new SchoolCalendarSettingsService(temp.Path).SetState(GermanState.BY);

        var second = new SchoolCalendarSettingsService(temp.Path);

        Assert.Equal(GermanState.BY, second.State);
    }

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

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