public void IsDirectory()
 {
     Assert.IsFalse(IoDir.IsDirectory(""), "Error validating directory");
     Assert.IsFalse(IoDir.IsDirectory("/Class.cs"), "Error validating directory");
     Assert.IsTrue(IoDir.IsDirectory("/"), "Error validating directory");
     Assert.IsTrue(IoDir.IsDirectory("/_TestContent/"), "Error validating directory");
 }