public void ModifiedSettingsUserCanceledInteraction_RequestWindowsTestPage_DoesntCreateWindowsPage() { var viewModel = SetupPdfCreatorTestPagePreperations(true); var wasSilent = true; _printHelper .When(x => _printHelper.PrintWindowsTestPage(Arg.Any <string>())) .Do(x => wasSilent = false); viewModel.PrintWindowsTestpageCommand.Execute(null); Assert.IsTrue(wasSilent); }