public void PlayTest() { //-- Arrange var output = new OutputControl(); var soundDevice = new LoudSpeaker(output); var expected = "LoudSpeaker sound\r\n"; //-- Act; soundDevice.Play(new object()); var actual = output.TextOutput; //-- Assert Assert.AreEqual(expected, actual); }
static LoudSpeaker() { Instance = new LoudSpeaker(); }