public void UnregisterVirtualPaths()
            {
                var instance = new StaticFilesModule(Directory.GetCurrentDirectory());

                instance.RegisterVirtualPath("/tmp", Path.GetTempPath());
                Assert.AreNotEqual(instance.VirtualPaths.Count, 0);
                instance.UnregisterVirtualPath("/tmp");
                Assert.AreEqual(instance.VirtualPaths.Count, 0);
            }