private static void Main(string[] args)
{
var order = new Order();
Console.WriteLine("good user story");
order.Place();
order.Pay();
order.Ship();
Console.WriteLine("bad user story");
order = new Order();
try
{
order.Pay();
}
catch (ArgumentException e)
{
Console.WriteLine(e.Message);
}
try
{
order.Ship();
}
catch (ArgumentException e)
{
Console.WriteLine(e.Message);
}
try
{
order.Place();
}
catch (ArgumentException e)
{
Console.WriteLine(e.Message);
}
try
{
order.Ship();
}
catch (ArgumentException e)
{
Console.WriteLine(e.Message);
}
try
{
order.Pay();
}
catch (ArgumentException e)
{
Console.WriteLine(e.Message);
}
Console.ReadKey();
}
public void ChangeState(Order order, IOrderState newState)
{
order.ChangeState(newState);
}
public void Ship(Order order)
{
throw new ArgumentException("Order must be Placed before Shipment");
}
public void Place(Order order)
{
ChangeState(order, new OrderPlaced());
}
public void Pay(Order order)
{
throw new ArgumentException("Order must be Placed before Payment");
}
public void Ship(Order order)
{
throw new ArgumentException("order already shipped");
}
public void Place(Order order)
{
throw new ArgumentException("order shipped. There no reason to place it again");
}
public void Pay(Order order)
{
throw new ArgumentException("order shipped, what you suppose to pay?");
}
public void Ship(Order order)
{
ChangeState(order, new OrderShipped());
}
public void Place(Order order)
{
throw new ArgumentException("Order cant be placed. It's already payed");
}
