eShopOnContainers/test/Services/UnitTest/Basket/Application/BasketWebApiTest.cs

using Microsoft.AspNetCore.Mvc;
using Microsoft.eShopOnContainers.Services.Basket.API.Controllers;
using Microsoft.eShopOnContainers.Services.Basket.API.Model;
using Moq;
using System.Collections.Generic;
using System.Threading.Tasks;
using Xunit;

namespace UnitTest.Basket.Application
{
    public class BasketWebApiTest
    {
        private readonly Mock<IBasketRepository> _basketRepositoryMock;

        public BasketWebApiTest()
        {
            _basketRepositoryMock = new Mock<IBasketRepository>();
        }

        [Fact]
        public async Task Get_customer_basket_success()
        {
            //Arrange
            var fakeCustomerId = "1";
            var fakeCustomerBasket = GetCustomerBasketFake(fakeCustomerId);

            _basketRepositoryMock.Setup(x => x.GetBasketAsync(It.IsAny<string>()))
                .Returns(Task.FromResult(fakeCustomerBasket));

            //Act
            var basketController = new BasketController(_basketRepositoryMock.Object);
            var actionResult = await basketController.Get(fakeCustomerId) as OkObjectResult;

            //Assert
            Assert.Equal(actionResult.StatusCode, (int)System.Net.HttpStatusCode.OK);
            Assert.Equal(((CustomerBasket)actionResult.Value).BuyerId, fakeCustomerId);
        }

        [Fact]
        public async Task Post_customer_basket_success()
        {
            //Arrange
            var fakeCustomerId = "1";
            var fakeCustomerBasket = GetCustomerBasketFake(fakeCustomerId);

            _basketRepositoryMock.Setup(x => x.UpdateBasketAsync(It.IsAny<CustomerBasket>()))
                .Returns(Task.FromResult(fakeCustomerBasket));

            //Act
            var basketController = new BasketController(_basketRepositoryMock.Object);
            var actionResult = await basketController.Post(fakeCustomerBasket) as OkObjectResult;

            //Assert
            Assert.Equal(actionResult.StatusCode, (int)System.Net.HttpStatusCode.OK);
            Assert.Equal(((CustomerBasket)actionResult.Value).BuyerId, fakeCustomerId);
        }        

        private CustomerBasket GetCustomerBasketFake(string fakeCustomerId)
        {            
            return new CustomerBasket(fakeCustomerId)
            {
                Items = new List<BasketItem>()
                {
                    new BasketItem()
                }
            };
        }
    }
}