public void TestSorting(bool isAscending, SortingMode sortingColumn, bool expected)
{
var dateTime = DateTime.UtcNow;
var firstFileViewModel = _autoMocker.CreateInstance <FileViewModel>();
firstFileViewModel.Name = "Program";
firstFileViewModel.Extension = "cs";
firstFileViewModel.Size = 1024;
firstFileViewModel.LastModifiedDateTime = dateTime;
var secondFileViewModel = _autoMocker.CreateInstance <FileViewModel>();
secondFileViewModel.Name = "module";
secondFileViewModel.Extension = "js";
secondFileViewModel.Size = 2048;
secondFileViewModel.LastModifiedDateTime = dateTime.AddDays(1);
var comparer = new FileViewModelsComparer(isAscending, sortingColumn);
var result = comparer.Compare(firstFileViewModel, secondFileViewModel);
Assert.Equal(expected, result > 0);
result = comparer.Compare(secondFileViewModel, firstFileViewModel);
Assert.Equal(expected, result < 0);
}
public void TestThrows()
{
var comparer = new FileViewModelsComparer(false, (SortingMode)42);
var firstFileViewModel = _autoMocker.CreateInstance <FileViewModel>();
var secondFileViewModel = _autoMocker.CreateInstance <FileViewModel>();
void Compare() => comparer.Compare(firstFileViewModel, secondFileViewModel);
Assert.Throws <ArgumentOutOfRangeException>(Compare);
}
public int Compare(IFileSystemNodeViewModel x, IFileSystemNodeViewModel y) =>
(x, y) switch
{
(FileViewModel a, FileViewModel b) => _filesComparer.Compare(a, b),
(DirectoryViewModel a, DirectoryViewModel b) => _directoriesComparer.Compare(a, b),
(FileViewModel _, DirectoryViewModel _) => 1,
(DirectoryViewModel _, FileViewModel _) => - 1,
_ => throw new InvalidOperationException()
};
}