public void Cancel()
{
switch (_state)
{
case OrderState.Cancelled:
return;
case OrderState.Paid:
throw new InvalidStateException("You can't cancel this order. It has already been paid.");
}
var e = new OrderCancelled(Id);
ApplyChange(e);
}
public void GivenIHaveCancelledTheOrder()
{
var orderId = EventSourceHelper.GetId<Order>();
var e = new OrderCancelled(orderId);
GivenHelper.Given(orderId, e);
}
private void Apply(OrderCancelled e)
{
_state = OrderState.Cancelled;
}