dotnet-template/MainProject.Tests/Controllers/AuthController_Tests.cs

using System;
using System.Reflection;
using System.Net;
using System.Net.Http;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.Infrastructure;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using Microsoft.Extensions.Configuration;
using Moq;
using Newtonsoft.Json;
using BasicDotnetTemplate.MainProject;
using BasicDotnetTemplate.MainProject.Controllers;
using BasicDotnetTemplate.MainProject.Services;
using BasicDotnetTemplate.MainProject.Models.Api.Response;
using BasicDotnetTemplate.MainProject.Models.Settings;
using BasicDotnetTemplate.MainProject.Models.Api.Request.Auth;
using BasicDotnetTemplate.MainProject.Models.Api.Data.Auth;
using BasicDotnetTemplate.MainProject.Models.Api.Common.User;
using BasicDotnetTemplate.MainProject.Models.Api.Common.Role;
using DatabaseSqlServer = BasicDotnetTemplate.MainProject.Models.Database.SqlServer;
using BasicDotnetTemplate.MainProject.Models.Api.Response.Auth;
using Microsoft.AspNetCore.Http;


namespace BasicDotnetTemplate.MainProject.Tests;

[TestClass]
public class AuthController_Tests
{
    [TestMethod]
    public void AuthController_NullConfiguration()
    {
        Environment.SetEnvironmentVariable("ASPNETCORE_ENVIRONMENT", "Development");
        var exception = true;
        try
        {
            var authServiceMock = new Mock<IAuthService>();
            _ = new AuthController(null, authServiceMock.Object);
            exception = false;
            Assert.Fail($"This test should not pass as configuration is null");
        }
        catch (Exception)
        {
            Assert.IsTrue(exception);
        }
    }


    [TestMethod]
    public async Task AuthenticateAsync_Should_Return_200_When_Successful()
    {
        IConfiguration configuration = TestUtils.CreateConfiguration();
        var authServiceMock = new Mock<IAuthService>();
        var controller = new AuthController(configuration, authServiceMock.Object);
        DatabaseSqlServer.User user = ModelsInit.CreateUser();
        AuthenticatedUser authenticatedUser = new AuthenticatedUser(user);

        var request = new AuthenticateRequest { Data = new AuthenticateRequestData { Email = "user", Password = "pass" } };
        authServiceMock.Setup(s => s.AuthenticateAsync(It.IsAny<AuthenticateRequestData>())).ReturnsAsync(authenticatedUser);
        ObjectResult response = (ObjectResult)(await controller.AuthenticateAsync(request));
        if (response != null && response.Value != null)
        {
            Assert.AreEqual(StatusCodes.Status200OK, response.StatusCode);

            var result = (BaseResponse<object>)response.Value;
            if (result != null)
            {
                Assert.AreEqual(StatusCodes.Status200OK, result.Status);
                Assert.IsInstanceOfType(result.Data, typeof(AuthenticatedUser));
            }
            else
            {
                Assert.Fail($"Result value is null");
            }

        }
        else
        {
            Assert.Fail($"Response value is null");
        }
    }

    [TestMethod]
    public async Task AuthenticateAsync_NotFound()
    {
        IConfiguration configuration = TestUtils.CreateConfiguration();
        var authServiceMock = new Mock<IAuthService>();
        var controller = new AuthController(configuration, authServiceMock.Object);

        var request = new AuthenticateRequest
        {
            Data = new AuthenticateRequestData()
            {
                Email = "d2ejdI1f4GYpq2kTB1nmeQkZXqR3QSxH8Yqkl7iv7zgfQ13qG/0dUUsreG/WGHWRBE5mVWaV43A=",
                Password = "d2ejdI1f4GYpq2kTB1nmeQkZXqR3QSxH8Yqkl7iv7zgfQ13qG/0dUUsreG/WGHWRBE5mVWaV43A="
            }
        };
        AuthenticatedUser? authenticatedUser = null;
        authServiceMock.Setup(s => s.AuthenticateAsync(It.IsAny<AuthenticateRequestData>())).ReturnsAsync(authenticatedUser);
        NotFoundResult response = (NotFoundResult)(await controller.AuthenticateAsync(request));

        Assert.IsInstanceOfType(response, typeof(NotFoundResult));

        if (response != null)
        {
            Assert.AreEqual(StatusCodes.Status404NotFound, response.StatusCode);
        }
        else
        {
            Assert.Fail($"Response is null");
        }
    }

    [TestMethod]
    public async Task AuthenticateAsync_Exception()
    {
        IConfiguration configuration = TestUtils.CreateConfiguration();
        var authServiceMock = new Mock<IAuthService>();
        var controller = new AuthController(configuration, authServiceMock.Object);

        var request = new AuthenticateRequest
        {
            Data = new AuthenticateRequestData { Email = "user", Password = "pass" }
        };

        authServiceMock.Setup(s => s.AuthenticateAsync(It.IsAny<AuthenticateRequestData>())).ThrowsAsync(new Exception("Unexpected error"));

        ObjectResult response = (ObjectResult)(await controller.AuthenticateAsync(request));

        Assert.IsInstanceOfType(response, typeof(ObjectResult));

        if (response != null && response.Value != null)
        {
            Assert.AreEqual(StatusCodes.Status500InternalServerError, response.StatusCode);

            var result = (BaseResponse<object>)response.Value;
            if (result != null)
            {
                Assert.AreEqual(StatusCodes.Status500InternalServerError, result.Status);
                Assert.AreEqual("Something went wrong. Unexpected error", result.Message);
            }
            else
            {
                Assert.Fail($"Result value is null");
            }
        }
        else
        {
            Assert.Fail($"Response is null");
        }
    }

}