public void TestSortingParentDirectory(bool isAscending, SortingMode sortingColumn)
{
var parentDirectoryViewModel = _autoMocker.CreateInstance <DirectoryViewModel>();
parentDirectoryViewModel.IsParentDirectory = true;
var directoryViewModel = _autoMocker.CreateInstance <DirectoryViewModel>();
var comparer = new DirectoryViewModelsComparer(isAscending, sortingColumn);
var result = comparer.Compare(parentDirectoryViewModel, directoryViewModel);
Assert.True(result < 0);
result = comparer.Compare(directoryViewModel, parentDirectoryViewModel);
Assert.True(result > 0);
}
public void TestThrows()
{
var comparer = new DirectoryViewModelsComparer(false, (SortingMode)42);
var firstViewModel = _autoMocker.CreateInstance <DirectoryViewModel>();
var secondViewModel = _autoMocker.CreateInstance <DirectoryViewModel>();
void Compare() => comparer.Compare(firstViewModel, secondViewModel);
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()
};
}
public void TestSorting(bool isAscending, SortingMode sortingColumn, bool expected)
{
var dateTime = DateTime.UtcNow;
var firstViewModel = _autoMocker.CreateInstance <DirectoryViewModel>();
firstViewModel.Name = "Camelot";
firstViewModel.LastModifiedDateTime = dateTime;
var secondViewModel = _autoMocker.CreateInstance <DirectoryViewModel>();
secondViewModel.Name = "Code";
secondViewModel.LastModifiedDateTime = dateTime.AddDays(1);
var comparer = new DirectoryViewModelsComparer(isAscending, sortingColumn);
var result = comparer.Compare(firstViewModel, secondViewModel);
Assert.Equal(expected, result > 0);
result = comparer.Compare(secondViewModel, firstViewModel);
Assert.Equal(expected, result < 0);
}
