public void WhenIChannelUpFrom18ItShouldBe3()
{
//Arrange
Television tv = new Television();
tv.TurnOn();
tv.ChangeChannel(18);
//Act
tv.ChannelUp();
//Assert
Assert.AreEqual(3, tv.CurrentChannel);
}
public void ChannelUP_HappyPath()
{
// Arrange
Television television = new Television();
int currentChannel;
television.TurnOn();
currentChannel = television.CurrentChannel;
// Act
television.ChannelUp();
// Assert
Assert.AreEqual(++currentChannel, television.CurrentChannel);
}