public void VisitMonitorTest()
{
Mock <IDisplay> mockDisplay = new Mock <IDisplay>();
ComputerPartDisplayVisitor computerPartDisplayVisitor = new ComputerPartDisplayVisitor(mockDisplay.Object);
Monitor monitor = new Monitor();
computerPartDisplayVisitor.Visit(monitor);
mockDisplay.Verify(x => x.WriteLine("Displaying monitor"), Times.Once());
}
public void VisitKeyboardTest()
{
Mock <IDisplay> mockDisplay = new Mock <IDisplay>();
ComputerPartDisplayVisitor computerPartDisplayVisitor = new ComputerPartDisplayVisitor(mockDisplay.Object);
Keyboard keyboard = new Keyboard();
computerPartDisplayVisitor.Visit(keyboard);
mockDisplay.Verify(x => x.WriteLine("Displaying keyboard"), Times.Once());
}
