public Result <Purchase> SellTickets(IConcert concert, TicketsBuyer buyer, TicketQuantity quantity)
{
var ticketsResult = concert.IssueTickets(quantity);
return(ticketsResult
.Map(tickets => {
buyer.AddPurchase(tickets);
return new Purchase(buyer, tickets);
}));
}
public void AddTicketsToBuyerWhenIssuingTicketsSucceeds()
{
var tickets = BuildTickets();
var concert = SetUpConcertWhichIssueTickets(tickets);
var buyer = new TicketsBuyer("1", "Buyer name");
var wantedQuantity = new TicketQuantity(5);
var service = new TicketsService();
service.SellTickets(concert, buyer, wantedQuantity);
Assert.NotEmpty(buyer.Purchases);
}
public void ReturnFailureWhenIssuingTicketsFails()
{
var errorMessage = "Some error occured";
var concert = SetUpConcertWhichDoesNotIssueTickets(errorMessage);
var buyer = new TicketsBuyer("1", "Buyer name");
var wantedQuantity = new TicketQuantity(5);
var service = new TicketsService();
var purchase = service.SellTickets(concert, buyer, wantedQuantity);
Assert.True(purchase.IsFailure);
Assert.Equal(errorMessage, purchase.Error);
}
public void ReturnPurchaseWhenIssuingTicketsSucceeds()
{
var tickets = BuildTickets();
var concert = SetUpConcertWhichIssueTickets(tickets);
var buyer = new TicketsBuyer("1", "Buyer name");
var wantedQuantity = new TicketQuantity(5);
var service = new TicketsService();
var purchase = service.SellTickets(concert, buyer, wantedQuantity);
Assert.True(purchase.IsSuccess);
Assert.Equal(buyer.Id, purchase.Value.Buyer.Id);
Assert.Equal(tickets, purchase.Value.Tickets);
}
