public void Provera_ShowOptions_Ispravno() { Informer i = new Informer(); string teststring = string.Format("Please type in the number of the operation you would like to conduct:{0}" + "1 - Write the usage of electric energy for certain region{0}" + "2 - Print all the function calculations{0}" + "IZADJI - Napustanje programa\r\n", Environment.NewLine); var output = new StringWriter(); Console.SetOut(output); i.ShowOptions(); Assert.That(output.ToString(), Is.EqualTo(teststring)); }