NUnit Test Error: Could not load type 'System.Web.HttpApplication' from assembly 'System.Web, Version=4.0.0.0

Question

我曾尝试搜索此内容，但所提供的解决方案似乎对我不起作用。我有一个针对 .Net Framework 4.5.1 的现有 C# Class 库项目，该项目当前处于活动状态。我想介绍使用 NUnit 进行单元测试。因此，我将 NUnit Test Project(.Net Core 3.1) 添加到解决方案中。我在 NUnit 项目中添加了对 .Net Framework 4.5.1 的引用，构建后看起来不错。但是，我在下面创建了一个简单的测试，当我运行我得到错误

Test
   Duration: 208 ms

  Message: 
    System.TypeLoadException : Could not load type 'System.Web.HttpApplication' from assembly 'System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'.
  Stack Trace: 
    RuntimeAssembly.GetExportedTypes()
    Assembly.get_ExportedTypes()
    ExtensionsForAssembly.GetNinjectModules(Assembly assembly)
    <>c.<Load>b__25_0(Assembly asm)
    SelectManySingleSelectorIterator`2.ToList()
    Enumerable.ToList[TSource](IEnumerable`1 source)
    KernelBase.Load(IEnumerable`1 m)
    KernelBase.Load(IEnumerable`1 assemblies)
    ModuleLoadExtensions.Load(IKernel kernel, Assembly[] assemblies)
    DirectRewardsController.ctor() line 24
    DirectRewardsTests.Test() line 18

N单元测试

public class DirectRewardsTests
    {
        [SetUp]
        public void SetUp()
        {

        }

        [Test]
        public void Test()
        {
            //Arrange
            DirectRewardsController directRewards = new DirectRewardsController(); 
            //Act

            //Assert
            Assert.Pass();
        }
    }

DirectRewardsController

public class DirectRewardsController : ApiController
    {
        StandardKernel DependencyKernel;
        
        private IDirectRewards justRewards;
        public DirectRewardsController()
        {
            DependencyKernel = new StandardKernel();
            DependencyKernel.Load(Assembly.GetExecutingAssembly());
            justRewards = DependencyKernel.Get<IDirectRewards>();
        }
        
         public HttpResponseMessage AddMember(MemberRequest model)
        {
            try
            {
                //Add Member record
            }
            catch (Exception ex)
            {
                return new HttpResponseMessage { StatusCode = HttpStatusCode.InternalServerError, Content = new StringContent(ex.Message) };
            }
        }
    }

Answer 1

我认为你的错误是因为测试项目是.NET Core 3.1，而你正在测试的项目使用.NET Framework 4.5.1。

您是否有理由不想对测试使用与您正在测试的项目相同的运行时？

NUnit Test Error: Could not load type 'System.Web.HttpApplication' from assembly 'System.Web, Version=4.0.0.0

NUnit Test Error: Could not load type 'System.Web.HttpApplication' from assembly 'System.Web, Version=4.0.0.0

.net

c#

nunit