Question

我的单元测试我的WEB API控制器有问题，我正在使用moq模拟我的存储库，进行设置和响应。然后使用模拟存储库启动控制器。问题是当我尝试从控制器执行调用时，我得到一个异常：

尝试方法   'System.Web.Http.HttpConfiguration..ctor（System.Web.Http.HttpRouteCollection）'   访问方法   'System.Web.Http.HttpConfiguration.DefaultFormatters（）'失败。


在System.Web.Http.HttpConfiguration..ctor（HttpRouteCollection）   在System.Web.Http.HttpConfiguration..ctor（）的at）   EyeShield.Api.Tests.PersonsControllerTests.Get_Persons_ReturnsAllPersons（）

说实话，不知道这里可能出现什么问题。有人知道这里可能存在什么问题吗？

控制器：

using System;
using System.Net;
using System.Net.Http;
using EyeShield.Api.DtoMappers;
using EyeShield.Api.Models;
using EyeShield.Service;
using System.Web.Http;

namespace EyeShield.Api.Controllers
{
    public class PersonsController : ApiController
    {
        private readonly IPersonService _personService;

        public PersonsController(IPersonService personService)
        {
            _personService = personService;
        }

        public HttpResponseMessage Get()
        {
            try
            {
                var persons = PersonMapper.ToDto(_personService.GetPersons());
                var response = Request.CreateResponse(HttpStatusCode.OK, persons);
                return response;
            }
            catch (Exception e)
            {
                return Request.CreateErrorResponse(HttpStatusCode.BadRequest, e.Message);
            }
        }
    }
}

的Global.asax：

using EyeShield.Data.Infrastructure;
using EyeShield.Data.Repositories;
using EyeShield.Service;
using Ninject;
using Ninject.Web.Common;
using System;
using System.Web;
using System.Web.Http;
using System.Web.Mvc;
using System.Web.Routing;

namespace EyeShield.Api
{
    public class MvcApplication : NinjectHttpApplication
    {
        protected override void OnApplicationStarted()
        {
            base.OnApplicationStarted();
            AreaRegistration.RegisterAllAreas();

            WebApiConfig.Register(GlobalConfiguration.Configuration);
            WebApiConfig.ConfigureCamelCaseResponse(GlobalConfiguration.Configuration);

            FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
            RouteConfig.RegisterRoutes(RouteTable.Routes);
        }

        protected override IKernel CreateKernel()
        {
            var kernel = new StandardKernel();
            kernel.Bind<Func<IKernel>>().ToMethod(ctx => () => new Bootstrapper().Kernel);
            kernel.Bind<IHttpModule>().To<HttpApplicationInitializationHttpModule>();

            RegisterServices(kernel);

            // Install our Ninject-based IDependencyResolver into the Web API config
            GlobalConfiguration.Configuration.DependencyResolver = new NinjectDependencyResolver(kernel);

            return kernel;
        }

        private void RegisterServices(IKernel kernel)
        {
            // This is where we tell Ninject how to resolve service requests
            kernel.Bind<IDatabaseFactory>().To<DatabaseFactory>();
            kernel.Bind<IPersonService>().To<PersonService>();
            kernel.Bind<IPersonRepository>().To<PersonRepository>();
        }
    }
}

单元测试：

using System.Collections.Generic;
using EyeShield.Api.Controllers;
using EyeShield.Api.DtoMappers;
using EyeShield.Api.Models;
using EyeShield.Service;
using Moq;
using NUnit.Framework;
using System.Net;
using System.Net.Http;
using System.Web.Http;
using System.Web.Http.Hosting;

namespace EyeShield.Api.Tests
{
    [TestFixture]
    public class PersonsControllerTests
    {
        private Mock<IPersonService> _personService;

        [SetUp]
        public void SetUp()
        {
            _personService = new Mock<IPersonService>();
        }

        [Test]
        public void Get_Persons_ReturnsAllPersons()
        {
            // Arrange
            var fakePesons = GetPersonsContainers();

            _personService.Setup(x => x.GetPersons()).Returns(PersonMapper.FromDto(fakePesons));

            // here exception occurs
            var controller = new PersonsController(_personService.Object)
            {
                Request = new HttpRequestMessage()
                {
                    Properties = { { HttpPropertyKeys.HttpConfigurationKey, new HttpConfiguration() } }
                }
            };

            // Act
            var response = controller.Get();
            string str = response.Content.ReadAsStringAsync().Result;

            // Assert
            Assert.AreEqual(HttpStatusCode.OK, response.StatusCode);
        }

        private static IEnumerable<PersonContainer> GetPersonsContainers()
        {
            IEnumerable<PersonContainer> fakePersons = new List<PersonContainer>
                {
                    new PersonContainer {Id = 1, Name = "Loke", Surname = "Lamora", PersonalId = "QWE654789", Position = "Software Engineer"},
                    new PersonContainer {Id = 2, Name = "Jean", Surname = "Tannen", PersonalId = "XYZ123456", Position = "Biology Lab Assistant"},
                    new PersonContainer {Id = 3, Name = "Edward", Surname = "Crowley", PersonalId = "ABC654789", Position = "System Infrastructure"}
                };

            return fakePersons;
        }
    }
}

Answer 1

尝试确保安装了Microsoft.AspNet.WebApi.Client。

我的应用无法正常工作，因为我已将其删除了。

打开软件包管理器控制台并执行：

安装包Microsoft.AspNet.WebApi.Client

Answer 2

确保以下Nuget打包库的版本相同：

Microsoft.AspNet.WebApi
Microsoft.AspNet.WebApi.Client
Microsoft.AspNet.WebApi.Core
Microsoft.AspNet.WebApi.WebHost

Answer 3

检查您的packages.config，确保以下Nuget打包库具有相同版本：

<package id="Microsoft.AspNet.WebApi" version="x.x.x" targetFramework="net45" />
<package id="Microsoft.AspNet.WebApi.Client" version="x.x.x" targetFramework="net45" />
<package id="Microsoft.AspNet.WebApi.Core" version="x.x.x" targetFramework="net45" />
<package id="Microsoft.AspNet.WebApi.WebHost" version="x.x.x" targetFramework="net45" />

从WebApi，WebApiWebhost，WebApi.Core，WebApi.Client卸载软件包

PM> uninstall-package Microsoft.AspNet.WebApi
PM> uninstall-package Microsoft.AspNet.WebApi.WebHost
PM> uninstall-package Microsoft.AspNet.WebApi.Core
PM> uninstall-package Microsoft.AspNet.WebApi.Client

重新安装程序包

PM> install-package Microsoft.AspNet.WebApi -version x.x.x

访问方法＆＃39; System.Web.Http.HttpConfiguration.DefaultFormatters（）＆＃39;失败

3 个答案: