public void AllExtensionsInFolders() { string folder = @"D:\_Test\sunamo\Helpers\FileSystem\FS\AllExtensionsInFolders\"; var excepted = CA.ToListString(".html", ".bowerrc", ".php"); var actual = FS.AllExtensionsInFolders(System.IO.SearchOption.TopDirectoryOnly, folder); Assert.Equal <string>(excepted, actual); }