More additions to AuthenticationService + Unit Tests and Mock

UserService/UserService.Application/Exceptions/InvalidLogin.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace UserService.Application.Exceptions
+{   
+
+    public class InvalidLogin  : Exception
+    {
+
+        public InvalidLogin()  : base("Incorrect Username or Password") {
+
+        }
+
+    }
+}

UserService/UserService.Application/Interfaces/Persistence/IUserService.cs → UserService/UserService.Application/Interfaces/Persistence/IAuthenticationService.cs

@@ -2,15 +2,16 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
+using UserService.Application.Results;
 using UserService.Domain.Entities;
 
 namespace UserService.Application.Interfaces.Persistence
 {
-    public interface IUserService
+    public interface IAuthenticationService
     {
 
-        void Register(string username, string password);
+        UserResult Register(string username, string password);
 
-        User Login(string username, string password);
+        UserResult Login(string username, string password);
     }
 }

UserService/UserService.Application/Interfaces/Persistence/IUserRepository.cs

@@ -11,9 +11,9 @@ namespace UserService.Application.Interfaces.Persistence
     public interface IUserRepository
     {
 
-        void CreateUser(string email, string password);
+        public User CreateUser(string email, string password);
 
-        User GetUser(string email);
+        public User GetUser(string email);
 
     }
 }

UserService/UserService.Application/Results/UserResult.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using UserService.Domain.ValueObjects;
+
+namespace UserService.Application.Results
+{
+     public record UserResult
+    {
+        public UserId UserId { get; init; }
+        public Username Username { get; init; }
+        public string Token { get; init; }
+
+
+        public UserResult(UserId userId, Username username, string token) {
+            this.UserId = userId;
+            this.Token = token;
+        } 
+
+    }
+}

UserService/UserService.Application/Services/AuthenticationService.cs

@@ -0,0 +1,45 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using UserService.Application.Exceptions;
+using UserService.Application.Interfaces;
+using UserService.Application.Interfaces.Persistence;
+using UserService.Application.Results;
+using UserService.Domain.Entities;
+
+namespace UserService.Application.Services
+{
+    public class AuthenticationService : IAuthenticationService
+    {
+
+        private readonly IUserRepository _userRepository;
+
+        public AuthenticationService(IUserRepository userRepository)
+        {
+            this._userRepository = userRepository;
+        }
+
+        public UserResult Register(string username, string password)
+        {
+
+            var user = this._userRepository.CreateUser(username, password);
+
+            return new UserResult(user.Id, user.Username, "token");
+
+        }
+
+        public UserResult Login(string username, string password)
+        {
+
+            var user = this._userRepository.GetUser(username) ?? throw new InvalidLogin();
+
+            if (user.Password.Value == password) {
+                return new UserResult(user.Id, user.Username, "token");
+            }
+
+            throw new InvalidLogin();
+
+        }
+    }
+}

UserService/UserService.UnitTests/.vscode/settings.json

@@ -0,0 +1 @@
+{}

UserService/UserService.UnitTests/UserService.UnitTests.csproj

@@ -12,6 +12,7 @@
   <ItemGroup>
     <PackageReference Include="coverlet.collector" Version="6.0.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
+    <PackageReference Include="Moq" Version="4.20.72" />
     <PackageReference Include="xunit" Version="2.5.3" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.5.3" />
   </ItemGroup>
@@ -23,6 +24,7 @@
   <ItemGroup>
     <ProjectReference Include="../../UserService.Domain/UserService.Domain.csproj" />
     <ProjectReference Include="..\UserService.Domain\UserService.Domain.csproj" />
+    <ProjectReference Include="..\UserService.Application\UserService.Application.csproj" />
   </ItemGroup>
 
 </Project>

UserService/UserService.UnitTests/UserServiceTests.cs

@@ -0,0 +1,44 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Castle.Core.Logging;
+using Moq;
+using UserService.Application.Interfaces.Persistence;
+using UserService.Application.Results;
+using UserService.Application.Services;
+using UserService.Domain.Entities;
+using UserService.Domain.ValueObjects;
+namespace UserService.UnitTests
+{
+    public class UserServiceTests
+    {
+        private readonly IAuthenticationService _userService;
+        private readonly Mock<IUserRepository> _userRepositoryMock = new Mock<IUserRepository>();
+
+        public UserServiceTests() {
+            this._userService = new AuthenticationService(_userRepositoryMock.Object);
+        }
+
+        [Fact]
+        public void Login_ShouldReturnUser_IfUserExistsAndCorrectPassword()
+        {
+
+            var user = new User{
+                Username = new Username("Test1234567"),
+                Password = new Password("Test1234567")
+            };
+
+
+            this._userRepositoryMock.Setup(x => x.GetUser(user.Username.Value)).Returns(user);
+
+            var loggedInUser = this._userService.Login(user.Username.Value, user.Password.Value);
+
+            Assert.Equal(loggedInUser.UserId.Value, user.Id.Value);
+
+
+
+
+        }
+    }
+}