public void CreateGUID() { var LGuid = FClientFile.GetGUID(); FClientFile.CreateGUID(); try { FClientFile.GetGUID(); Assert.Fail(); } catch { } FClientFile = null; var LManager = (IAppClientFileManagerService)TestHost.CurrentInstance.AppInstance; FClientFile = LManager.GetCurrentClientFile(); Assert.AreNotEqual(LGuid, FClientFile.GetGUID()); }