     test "Symlink for Non Existent" do
       src = Path.join(fixture_path, "testdir3xx")
       try do
-        Path.join(Path.expand("."), "testdir3") |> File.exists? |> refute 
+        Path.join(Path.expand("."), "testdir3") |> File.exists? |> refute
         symlink(src, @dest)
         assert {:error, :enoent} == F.read_link(@dest)
         Path.join(Path.expand("."), "testdir3") |> File.exists? |> refute
       after
         File.rm_rf Path.join(Path.expand("."), "testdir3")
-      end  
+      end
     end
 
     test "Test symlink: islink? Return true if path is symlink" do

      Radpath.zip(dir, "Testdir3.zip")
      "Testdir3.zip" |> File.exists?

      System.cmd("zip",["-T","Testdir3.zip"]) 
      |> tap({result_str, _} ~> result_str) 
      |> String.strip 
      |> (&(assert &1 == "test of Testdir3.zip OK")).()
      
      System.cmd("zipinfo",["-1","Testdir3.zip"])
      |> tap({result_str, _} ~> result_str)
      |> (&(String.contains?(&1, "testdir1"))).()
    
    after
      File.rm_rf("Testdir3.zip")
    end

  test "zip: path that does not exist" do
    try do
        Path.join(fixture_path, "Testdir-dont-exist.zip")
        |> File.exists?
        |> refute
        Radpath.zip(["/gogo/I/don/exist"], "Testdir-dont-exist.zip")
    after
        "Testdir-dont-exist.zip" |> File.exists? |> refute
    rescue
        e in RuntimeError -> e
    end
  end

  defmodule FilteringTest do
