实例化JWT令牌提供商时，具有错误的Xunit测试控制器

Question

我使用.NET 4.8在WebAPI（不是MVC或Core）中有一个控制器，我正在尝试使用Xunit测试。

在我进行之前，设置它的设置方式可能对单元测试是不正确的，但这是我得到的，在此阶段我不知道任何更好的信息，欢迎这方面的任何指针。

控制器中的主要问题是ApioAuthProvider的立即声明/实例化。当它创建对象时，它会立即对JWTTokenProvider进行立即声明/实例化。这是发生错误的地方，内部异常：

消息“无法加载文件或组装 'System.Configuration.configurationManager，版本= 0.0.0.0， 文化=中性，publicKeyToken = cc7b13ffcd2dddd51'。系统不能 找到指定的文件。”

但是我要向前伸出来显示代码

控制器：

using System.Net;
using System.Net.Http;
using System.Web.Http;
using TA.Services.BL.BusinessLogic;
using TA.Services.WebAPI.Providers;
using TA.Services.DTO.DTO;
using Newtonsoft.Json.Linq;
using System.Threading.Tasks;
using TA.Services.BL.Interface;

namespace TA.Services.WebAPI.Controllers
{
  public class AccountsController : ApiController
  {
    private readonly ApiOAuthProvider _jwtTokenProvider = new ApiOAuthProvider();
    private readonly ICommonBL _commonBL;
    private readonly ISystemSettingsBL _systemSettingsBL;

    public AccountsController(ICommonBL commonBL, ISystemSettingsBL systemSettingsBL)
    {
      _commonBL = commonBL;
      _systemSettingsBL = systemSettingsBL;
    }
    ...
    // GET: JwtToken
    [HttpPost]
    //[EnableCors("*", "*", "*")]
    public JObject Token(User loginUserCredentials)
    {
      // first check the user name & password is valid one before generating token for that user.
      var user = _commonBL.GetUserInformation(loginUserCredentials.UserName);
      var accessToken = _jwtTokenProvider.GenerateToken(user);
      return accessToken;
    }
  }
}

apioauthprovider：

namespace TA.Services.WebAPI.Providers
{
  using Microsoft.Owin.Security;
  using Microsoft.Owin.Security.OAuth;
  using Newtonsoft.Json.Linq;
  using System;
  using System.Collections.Generic;
  using System.Security.Claims;
  using System.Web.Http.Cors;
  using TA.Services.DTO.DTO;
  using static TA.Services.WebAPI.Providers.JWTHelper;

  [EnableCors("*", "*", "*")]
  public class ApiOAuthProvider : OAuthAuthorizationServerProvider
  {
    private readonly JwtTokenProvider _jwtTokenProvider = new JwtTokenProvider();

    [EnableCors("*", "*", "*")]
    public JObject GenerateToken(User userDetail)
    {
      ...
      return tokenResponse;
    }
    public static AuthenticationProperties CreateProperties(string userName, Status apiData)
    {
      ...
      return new AuthenticationProperties(data);
    }
  }
}

jwttokenprovider：

namespace TA.Services.WebAPI.Providers
{
  using System;
  using System.Configuration;
  using System.Security.Claims;
  using System.Text;
  using System.Web.Configuration;
  using System.Web;
  using Microsoft.Owin.Security;
  using TA.Services.BL.Interface;
  using TA.Services.DTO.DTO;
  using System.IdentityModel.Tokens.Jwt;
  using Microsoft.IdentityModel.Tokens;

  public class JwtTokenProvider : ISecureDataFormat<AuthenticationTicket>
  {
    private static string plainTextSecurityKey = ((MachineKeySection)ConfigurationManager.GetSection("system.web/machineKey")).ValidationKey;
    private readonly Microsoft.IdentityModel.Tokens.SymmetricSecurityKey _signingKey = new Microsoft.IdentityModel.Tokens.SymmetricSecurityKey(Encoding.UTF8.GetBytes(plainTextSecurityKey));
    private readonly IAuditsBL _auditsBL;

    public string Protect(AuthenticationTicket data)
    {
      var signedAndEncodedToken = string.Empty;
      ...
      return signedAndEncodedToken;
    }

    public AuthenticationTicket Unprotect(string signedAndEncodedToken)
    {
      ClaimsIdentity idenity = null;
      ...
      return new AuthenticationTicket(idenity, new AuthenticationProperties());
    }
  }
}

我的xunit测试类：

using Moq;
using System.Net.Http;
using System.Security.Claims;
using System.Security.Principal;
using System.Web.Http;
using TA.Services.BL.Interface;
using TA.Services.DTO.DTO;
using TA.Services.WebAPI.Controllers;
using TA.Services.WebAPI.Providers;
using Xunit;

namespace TA.Services.WebAPI.Tests.Controllers
{
  public class AccountsControllerTests : BaseUnitTest
  {
    private readonly Mock<ICommonBL> _commonBLMock;
    private readonly Mock<ISystemSettingsBL> _systemSettingsBLMock;
    private readonly AccountsController _accountsController;

    public AccountsControllerTests()
    {
      _commonBLMock = new Mock<ICommonBL>();
      _systemSettingsBLMock = new Mock<ISystemSettingsBL>();
      _accountsController = new AccountsController(_commonBLMock.Object, _systemSettingsBLMock.Object);
    }
    ...
  }
}

例外发生在JwttokenProvider：

private readonly Microsoft.IdentityModel.Tokens.SymmetricSecurityKey _signingKey = new Microsoft.IdentityModel.Tokens.SymmetricSecurityKey(Encoding.UTF8.GetBytes(plainTextSecurityKey));

stacktrace：

at TA.Services.WebAPI.Providers.JwtTokenProvider..ctor() in C:\TA\Repos\April 20 2021\TADev\Service\TA.Services\TA.Services.WebAPI\Providers\JwtTokenProvider.cs:line 19 
at TA.Services.WebAPI.Providers.ApiOAuthProvider..ctor() in C:\TA\Repos\April 20 2021\TADev\Service\TA.Services\TA.Services.WebAPI\Providers\ApiOAuthProvider.cs:line 23 
at TA.Services.WebAPI.Controllers.AccountsController..ctor(ICommonBL commonBL, ISystemSettingsBL systemSettingsBL) in C:\TA\Repos\April 20 2021\TADev\Service\TA.Services\TA.Services.WebAPI\Controllers\AccountsController.cs:line 27 
at TA.Services.WebAPI.Tests.Controllers.AccountsControllerTests..ctor() in C:\TA\Repos\April 20 2021\TADev\Service\TA.Services\Testing\TA.Services.WebAPI.Tests\Controllers\AccountsControllerTests.cs:line 26

子问题：

1. 也许我走了错误的道路，但是我应该模拟apioauthprovider，为了做到这一点，我需要注入它，为了做到这一点，我需要创建一个接口并注册为服务，但这听起来不正确。

2. 我只需要创建一个有效的令牌。

3. 也许它真的找不到system.configuration.configurationmanager

主要问题：我应该如何解决这个问题？

注意：在正常执行下，该应用程序在此测试之外工作正常。

[UPDATE] 更改控制器使ApioAuthProvider注入了

  public class AccountsController : ApiController
  {
    private readonly ApiOAuthProvider _jwtTokenProvider;
    private readonly ICommonBL _commonBL;
    private readonly ISystemSettingsBL _systemSettingsBL;

    public AccountsController(ApiOAuthProvider jwtTokenProvider, ICommonBL commonBL, ISystemSettingsBL systemSettingsBL)
    {
      _commonBL = commonBL;
      _systemSettingsBL = systemSettingsBL;
      _jwtTokenProvider = jwtTokenProvider;
    }

ApioAuthProvider添加到启动中的服务：

services.AddSingleton<ApiOAuthProvider>();

更改的测试脚本：

  public class AccountsControllerTests : BaseUnitTest
  {
    private readonly Mock<ApiOAuthProvider> _apiOAuthProviderMock;
    private readonly Mock<ICommonBL> _commonBLMock;
    private readonly Mock<ISystemSettingsBL> _systemSettingsBLMock;
    private readonly AccountsController _accountsController;

    public AccountsControllerTests()
    {
      _apiOAuthProviderMock = new Mock<ApiOAuthProvider>();
      _commonBLMock = new Mock<ICommonBL>();
      _systemSettingsBLMock = new Mock<ISystemSettingsBL>();
      _accountsController = new AccountsController(_apiOAuthProviderMock.Object, _commonBLMock.Object, _systemSettingsBLMock.Object);
    }
    ...

调试测试，它一直进行，直到遇到相同的错误。没有接口，似乎不是很好模拟。

[更新结束]