Hands-On RESTful Web Services with ASP.NET Core 3

Testing the sold-out process

It is possible to check the sold-out process by testing ItemSoldOutHandler. The handler will be tested with the same approach we saw for the other handlers:

using System;using System.Linq;using System.Threading;using System.Threading.Tasks;using Cart.Domain.Events;using Cart.Domain.Handlers.Cart;using Cart.Fixtures;using Shouldly;using Xunit;namespace Cart.Domain.Tests.Handlers.Events{    public class ItemSoldOutEventHandlerTests : IClassFixture<CartContextFactory>    {        private readonly CartContextFactory _contextFactory;        public ItemSoldOutEventHandlerTests(CartContextFactory             cartContextFactory)        {            _contextFactory = cartContextFactory;        }        [Fact]        public async Task should_not_remove_records_whensoldout            message_contains_not_existing_id ...