public void CheckIfITunesLibrary_whenNetworkDrive_correctlyChecksPath() { var appFactory = MockRepository.GenerateStub<ITunesAppFactory>(); var mockITunes = MockRepository.GenerateStub<iTunesApp>(); appFactory.Stub(x => x.GetNewInstance()).Return(mockITunes); mockITunes.Stub(x => x.Version).Return("Test"); mockITunes.Stub(x => x.LibraryXMLPath).Return("\\\\networkdrive"); MainForm form = new MainForm(); form.ITunesAppFactory = appFactory; form.SetITunesInstance(); Assert.IsFalse(form.CheckIfiTunesLibrary("E:\\")); }