public async Task CreateEmptyFolder_ForNonRootParent_CreatesFolderCorrectly()
        {
            // Arrange

            var newFolder = new FolderModel
            {
                Name = "Ляпис Трубецкой",
            };

            var parentFolder = await GetFolder(ReferenceData.ArtistFolderId);

            parentFolder.AddSubfolder(newFolder);

            var target = CreateTestTarget();

            // Act

            await target.CreateEmptyFolder(newFolder, CancellationToken.None);

            // Assert

            var expectedFolder = new FolderModel
            {
                Id   = ReferenceData.NextFolderId,
                Name = "Ляпис Трубецкой",
            };

            var referenceData = GetReferenceData();

            referenceData.ArtistFolder.AddSubfolder(expectedFolder);

            newFolder.Should().BeEquivalentTo(expectedFolder, x => x.WithStrictOrdering().IgnoringCyclicReferences());

            var expectedFolders = new[]
            {
                referenceData.RootFolder,
                referenceData.SubFolder,
                referenceData.ArtistFolder,
                referenceData.EmptyFolder,
                referenceData.DeletedFolder,
                expectedFolder,
            };

            var allFolders = await GetAllFolders();

            allFolders.Should().BeEquivalentTo(expectedFolders, x => x.WithStrictOrdering().IgnoringCyclicReferences());

            var folderFromRepository = await GetFolder(ReferenceData.NextFolderId);

            folderFromRepository.Should().BeEquivalentTo(expectedFolder, x => x.WithStrictOrdering().IgnoringCyclicReferences());

            var expectedFolderPath = Path.Combine(LibraryStorageRoot, "Belarusian", "Neuro Dubel", "Ляпис Трубецкой");

            Directory.Exists(expectedFolderPath).Should().BeTrue();

            await CheckLibraryConsistency();
        }