如何为单元测试创建HttpContext？

我正在努力模拟我的单元测试所需的 HttpContext .

我已经使用 SessionManager 接口从我的Mvc控制器中抽象出会话控制，并使用一个名为 CookieSessionManager 的类实现了它 . （ early development stages ） .

CookieSessionManager 使用注入的singleton HttpContextAccessor （在Startup.cs ConfigureServices中）使用 HttpContext .

我正在使用Cookie认证，它在Startup.cs中设置 app.UseCookieAuthentication .

Testing this manually in debug mode works as expected

我为 AccountController 类编写的 MSUnit 测试工作时注入了 MockSessionManager 类 .

我遇到的真正问题是我为 CookieSessionManager 课程编写的单元测试 . 我试图设置 HttpContext ，如下所示;

[TestClass]
public class CookieSessionManagerTest
{
    private IHttpContextAccessor contextAccessor;
    private HttpContext context;
    private SessionManager sessionManager;

    [TestInitialize]
    public void Setup_CookieSessionManagerTest()
    {
        context = new DefaultHttpContext();

        contextAccessor = new HttpContextAccessor();

        contextAccessor.HttpContext = context;

        sessionManager = new CookieSessionManager(contextAccessor);
    }

The Error

但是对 sessionManager.Login(CreateValidApplicationUser()); 的调用似乎没有设置 IsAuthenticated 标志，测试 CookieSessionManager_Login_ValidUser_Authenticated_isTrue 失败 .

[TestMethod]
public void CookieSessionManager_Login_ValidUser_Authenticated_isTrue()
{
    sessionManager.Login(CreateValidApplicationUser());

    Assert.IsTrue(sessionManager.isAuthenticated());
}

public ApplicationUser CreateValidApplicationUser()
{
    ApplicationUser applicationUser = new ApplicationUser();

    applicationUser.UserName = "ValidUser";

    //applicationUser.Password = "ValidPass";

    return applicationUser;
}

测试名称：CookieSessionManager_Login_ValidUser_Authenticated_isTrue：第43行测试结果：失败测试持续时间：0：00：00.0433169结果StackTrace：at ClaimsWebAppTests.Identity.CookieSessionManagerTest.CookieSessionManager_Login_ValidUser_Authenticated_isTrue（）CookieSessionManagerTest.cs：第46行结果消息：Assert.IsTrue失败 .

MY CODE

SessionManager

using ClaimsWebApp.Models;

namespace ClaimsWebApp.Identity
{
    public interface SessionManager
    {
        bool isAuthenticated();

        void Login(ApplicationUser applicationUser);

        void Logout();
    }
}

CookieSessionManager

using ClaimsWebApp.Identity;
using ClaimsWebApp.Models;
using Microsoft.AspNetCore.Http;
using System;
using System.Collections.Generic;
using System.Security.Claims;

namespace ClaimsWebApp
{
    public class CookieSessionManager : SessionManager
    {
        private List<ApplicationUser> applicationUsers;
        private IHttpContextAccessor ContextAccessor;
        private bool IsAuthenticated;

        public CookieSessionManager(IHttpContextAccessor contextAccessor)
        {
            this.IsAuthenticated = false;

            this.ContextAccessor = contextAccessor;

            IsAuthenticated = ContextAccessor.HttpContext.User.Identity.IsAuthenticated;

            applicationUsers = new List<ApplicationUser>();

            applicationUsers.Add(new ApplicationUser { UserName = "ValidUser" });
        }
        public bool isAuthenticated()
        {
            return IsAuthenticated;
        }

        public void Login(ApplicationUser applicationUser)
        {
            if (applicationUsers.Find(m => m.UserName.Equals(applicationUser.UserName)) != null)
            {
                var identity = new ClaimsIdentity(new[] {
                new Claim(ClaimTypes.Name, applicationUser.UserName)
                },
                "MyCookieMiddlewareInstance");

                var principal = new ClaimsPrincipal(identity);

                ContextAccessor.HttpContext.Authentication.SignInAsync("MyCookieMiddlewareInstance", principal);

                IsAuthenticated = ContextAccessor.HttpContext.User.Identity.IsAuthenticated;
            }
            else
            {
                throw new Exception("User not found");
            }
        }

        public void Logout()
        {
            ContextAccessor.HttpContext.Authentication.SignOutAsync("MyCookieMiddlewareInstance");

            IsAuthenticated = ContextAccessor.HttpContext.User.Identity.IsAuthenticated;
        }
    }
}

Startup.cs

using ClaimsWebApp.Identity;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;

namespace ClaimsWebApp
{
    public class Startup
    {
        // This method gets called by the runtime. Use this method to add services to the container.
        // For more information on how to configure your application, visit http://go.microsoft.com/fwlink/?LinkID=398940
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddMvc();
            services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();
            services.AddScoped<SessionManager, CookieSessionManager>();
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
        {
            loggerFactory.AddConsole();

            app.UseCookieAuthentication(new CookieAuthenticationOptions()
            {
                AuthenticationScheme = "MyCookieMiddlewareInstance",
                LoginPath = new PathString("/Account/Unauthorized/"),
                AccessDeniedPath = new PathString("/Account/Forbidden/"),
                AutomaticAuthenticate = true,
                AutomaticChallenge = true
            });

            app.UseMvc(routes =>
            {
                routes.MapRoute(
                    name: "default",
                    template: "{controller=Account}/{action=Login}/{id?}");
            });
        }
    }
}

CookieSessionManagerTest.cs

using ClaimsWebApp;
using ClaimsWebApp.Identity;
using ClaimsWebApp.Models;
using Microsoft.AspNetCore.Http;
using Microsoft.VisualStudio.TestTools.UnitTesting;

namespace ClaimsWebAppTests.Identity
{
    [TestClass]
    public class CookieSessionManagerTest
    {
        private IHttpContextAccessor contextAccessor;
        private HttpContext context;
        private SessionManager sessionManager;

        [TestInitialize]
        public void Setup_CookieSessionManagerTest()
        {
            context = new DefaultHttpContext();

            contextAccessor = new HttpContextAccessor();

            contextAccessor.HttpContext = context;

            sessionManager = new CookieSessionManager(contextAccessor);
        }

        [TestMethod]
        public void CookieSessionManager_Can_Be_Implemented()
        {
            Assert.IsInstanceOfType(sessionManager, typeof(SessionManager));
        }


        [TestMethod]
        public void CookieSessionManager_Default_Authenticated_isFalse()
        {
            Assert.IsFalse(sessionManager.isAuthenticated());
        }

        [TestMethod]
        public void CookieSessionManager_Login_ValidUser_Authenticated_isTrue()
        {
            sessionManager.Login(CreateValidApplicationUser());

            Assert.IsTrue(sessionManager.isAuthenticated());
        }

        public ApplicationUser CreateValidApplicationUser()
        {
            ApplicationUser applicationUser = new ApplicationUser();

            applicationUser.UserName = "ValidUser";

            //applicationUser.Password = "ValidPass";

            return applicationUser;
        }

        public ApplicationUser CreateInValidApplicationUser()
        {
            ApplicationUser applicationUser = new ApplicationUser();

            applicationUser.UserName = "InValidUser";

            //applicationUser.Password = "ValidPass";

            return applicationUser;
        }
    }
}