static void Main(string[] args)
{
var userInteraction = new UserInteraction();
var calculatorApp = new CalculatorApp(new DefaultExchangeService(), userInteraction);
userInteraction.DisplayMessage(CalculatorApp.HELP_MESSAGE);
userInteraction.DisplayMessage("Other Commands: HELP, EXIT");
Command lastExecutedCommand = null;
while (!(lastExecutedCommand is ExitCommand))
{
lastExecutedCommand = calculatorApp.ProcessCommand();
}
}
public void ShouldPassMessageToIoStream()
{
var mockIoStream = new Mock <IUserIoStream>();
var sut = new UserInteraction(mockIoStream.Object);
sut.DisplayMessage("Message 1");
mockIoStream.Verify(m => m.WriteLine("Message 1"), Times.Once());
}