clean-architecture-demo-user-manager/tests/UserManager.Application.IntegrationTests/Features/Users/UserServiceIntegrationTests.cs

using Microsoft.EntityFrameworkCore;
using UserManager.Application.Features.Users.Requests;
using UserManager.Application.Features.Users.Responses;
using UserManager.Application.Features.Users.Services;
using UserManager.Domain.Entities;
using UserManager.Infrastructure;

namespace UserManager.Application.IntegrationTests.Features.Users
{
    [TestClass]
    public class UserServiceIntegrationTests
    {

        private UserManagerContext _context = null!;

        [TestInitialize]
        public void Initialize()
        {
            DbContextOptions<UserManagerContext> options = new DbContextOptionsBuilder<UserManagerContext>()
                .UseInMemoryDatabase(databaseName: Guid.NewGuid().ToString())
                .Options;

            _context = new UserManagerContext(options);
        }

        [TestCleanup]
        public void Cleanup()
        {
            _context.Dispose();
            _context = null!;
        }

        [TestMethod]
        public async Task CreateUserAsync_ShouldAddUserToDatabase_WhenCreateUserCalled()
        {
            // Arrange
            CreateUserRequestDto request = new()
            {
                FirstName = "John",
                LastName = "Doe",
            };

            UnitOfWork unitOfWork = new(_context);
            UserService userService = new(unitOfWork);

            // Act
            CreateUserResponseDto responseDto = await userService.CreateUserAsync(request);

            // Assert
            User user = _context.Users.First();
            Assert.AreEqual(1, _context.Users.Count());
            Assert.AreEqual("John", user.FirstName);
            Assert.AreEqual("John", responseDto.FirstName);
            Assert.AreEqual(1, user.UserId);
            Assert.AreEqual(1, responseDto.UserId);
            Assert.IsTrue(user.CreateAtUtc > DateTime.UtcNow.AddSeconds(-1));
            Assert.IsTrue(user.CreateAtUtc < DateTime.UtcNow.AddSeconds(1));
            Assert.IsNull(user.UpdatedAtUtc);
            Assert.IsNull(user.DeletedAtUtc);
            Assert.IsFalse(user.IsDeleted);
        }
    }
}