failed attempt to write a test for Series Controller

NzbDrone.Core/Helpers/Disk.cs

@@ -0,0 +1,25 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace NzbDrone.Core.Helpers
+{
+
+    static class Disk
+    {
+
+        /// <summary>
+        /// Cleans the path. making it a uniform path.
+        /// this will normalize all different presentations of a single folder.
+        /// </summary>
+        /// <param name="path">The path.</param>
+        /// <returns>Cleaned Path</returns>
+        public static string CleanPath(string path)
+        {
+            if (string.IsNullOrEmpty(path)) throw new ArgumentException("Path can not be null or empty");
+            return path.ToLower().Trim('/', '\\', ' ');
+        }
+
+    }
+}