public void FiltersExcludedDirectories(string dirname, FileAttributes attributes, ExclusionFilters filters, bool excluded)
{
var dirInfo = new DirectoryInfo(Path.Combine(_fileSystem.RootPath, dirname));
dirInfo.Create();
dirInfo.Attributes = attributes;
Assert.Equal(excluded, FileSystemInfoHelper.IsExcluded(_fileSystem.GetDirectory(dirname), filters));
}