jellyfin/tests/Jellyfin.Server.Implementations.Tests/Library/LibraryManagerSortTests.cs

using System;
using System.Collections.Generic;
using System.Linq;
using AutoFixture;
using AutoFixture.AutoMoq;
using Emby.Naming.Common;
using Emby.Server.Implementations.Library;
using Emby.Server.Implementations.Sorting;
using Jellyfin.Data.Enums;
using Jellyfin.Database.Implementations.Enums;
using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Entities.Audio;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.Persistence;
using MediaBrowser.Controller.Resolvers;
using MediaBrowser.Controller.Sorting;
using MediaBrowser.Model.IO;
using Moq;
using Xunit;
using BaseItem = MediaBrowser.Controller.Entities.BaseItem;

namespace Jellyfin.Server.Implementations.Tests.Library;

public class LibraryManagerSortTests
{
    [Fact]
    public void Sort_UserDependentKey_NullUser_ThrowsArgumentException()
    {
        var libraryManager = CreateLibraryManager(
            new IBaseItemComparer[] { new PlayCountComparer(), new SortNameComparer() });

        BaseItem[] items =
        {
            new Audio { Name = "Zulu", SortName = "Zulu", Id = Guid.NewGuid() },
            new Audio { Name = "Alpha", SortName = "Alpha", Id = Guid.NewGuid() },
        };

        Assert.Throws<ArgumentException>(() => libraryManager.Sort(
            items,
            user: null,
            new[] { (ItemSortBy.PlayCount, SortOrder.Descending) }).ToArray());
    }

    [Fact]
    public void Sort_DateLastContentAdded_NullUser_OrdersByDateNotSortName()
    {
        var libraryManager = CreateLibraryManager(
            new IBaseItemComparer[] { new DateLastMediaAddedComparer(), new SortNameComparer() });

        BaseItem[] items =
        {
            MakeFolder("Alpha", new DateTime(2026, 1, 1)),
            MakeFolder("Mike", new DateTime(2025, 1, 1)),
            MakeFolder("Zulu", new DateTime(2024, 1, 1))
        };

        var sorted = libraryManager.Sort(
            items,
            user: null,
            new[] { (ItemSortBy.DateLastContentAdded, SortOrder.Descending) }).ToArray();

        Assert.Equal(new[] { "Alpha", "Mike", "Zulu" }, sorted.Select(i => i.Name));
    }

    private static Folder MakeFolder(string name, DateTime dateLastMediaAdded)
        => new() { Name = name, Id = Guid.NewGuid(), DateLastMediaAdded = dateLastMediaAdded };

    private static Emby.Server.Implementations.Library.LibraryManager CreateLibraryManager(IReadOnlyCollection<IBaseItemComparer> comparers)
    {
        var fixture = new Fixture().Customize(new AutoMoqCustomization());
        fixture.Register(() => new NamingOptions());
        var configMock = fixture.Freeze<Mock<IServerConfigurationManager>>();
        configMock.Setup(c => c.ApplicationPaths.ProgramDataPath).Returns("/data");
        BaseItem.ConfigurationManager ??= configMock.Object;
        var itemRepository = fixture.Freeze<Mock<IItemRepository>>();
        itemRepository.Setup(i => i.RetrieveItem(It.IsAny<Guid>())).Returns<BaseItem>(null);
        var fileSystemMock = fixture.Freeze<Mock<IFileSystem>>();
        fileSystemMock.Setup(f => f.GetFileInfo(It.IsAny<string>())).Returns<string>(path => new FileSystemMetadata { FullName = path });

        return fixture.Build<Emby.Server.Implementations.Library.LibraryManager>().Do(s => s.AddParts(
                fixture.Create<IEnumerable<IResolverIgnoreRule>>(),
                fixture.Create<IEnumerable<IItemResolver>>(),
                fixture.Create<IEnumerable<IIntroProvider>>(),
                comparers,
                fixture.Create<IEnumerable<ILibraryPostScanTask>>()))
            .Create();
    }
}