public void ViewSubDirectories()
 {
     var direcoryViewer = new DirectoryViewer(_fileSystem);
     var subdirs = direcoryViewer.GetAllDirectories(@"c:\");
     Assert.IsTrue(_tree.Equals(subdirs));
 }
 public void ViewDirectories()
 {
     var directoryViewer = new DirectoryViewer(_fileSystem);
     var subdir = directoryViewer.GetDirectories(@"c:\");
     Assert.AreEqual(2, subdir.Length);
     Assert.IsTrue(subdir.Contains(@"c:\Dir"));
     Assert.IsTrue(subdir.Contains(@"c:\demo"));
 }