C# 编写单元测试时无法实例化类错误的代理

我有以下课程：

   public ExtractUkFileFunction (UkExtractFileHandler fileHandler)
        {
            _fileHandler = fileHandler;
        }

及

---

我没有很多C#单元测试或Moq方面的经验，因此任何建议都将不胜感激。谢谢

根据您为UKTractFileHandler提供的代码：

public class UkExtractFileHandler : ExtractFileHandler<UkExtractFileHandler.FileMapper>
{
    public UkExtractFileHandler(
          ILoggerFactory loggerFactory, 
          IRecordParser recordParser, 
          IUnzipper unzipper, 
          IFileStore fileStore, 
          ILocationService locationService) 
        : base(recordParser, unzipper, fileStore, locationService)
    {
        Logger = loggerFactory.Create<ExtractFileHandler>();
    }
}

因此，您的问题可能是在这段代码中，您向ExtractFileHandler的构造函数传递的不是4个参数，而是5个参数，该构造函数只需要4个参数：

var mockFileHandler=new Mock(
mockLoggerFactory.Object，我认为问题是由您使用的Moq版本和测试的目标框架引起的。您使用的是.net还是.net core？您有
UKTractFileHandler
，但是mock
ExtractFileHandler
。
ExtractFileHandler
看起来怎么样？抱歉，这是一个打字错误@PavelAnikhouski
 [Test]
    public void Construct_ExtractUkFileFunction_ExpectSuccess()
    {
        var mockLoggerFactory = new Mock<ILoggerFactory>();
        var mockRecordParser = new Mock<IRecordParser>();
        var mockUnzipper = new Mock<IUnzipper>();
        var mockFileStore = new Mock<IFileStore>();
        var mockLocationService = new Mock<ILocationService>();
        
        var mockFileHandler = new Mock<ExtractFileHandler>
            (mockLoggerFactory.Object, mockRecordParser.Object, mockUnzipper.Object, mockFileStore.Object, mockLocationService.Object);
        var extractUkFileFunction = new ExtractUkFileFunction(mockFileHandler.Object);

        Assert.IsNotNull(extractUkFileFunction ); 
    }

Can not instantiate proxy of class: Core.Handlers.UkExtractFileHandler.
    Could not find a constructor that would match given arguments:
    Castle.Proxies.ILoggerFactoryProxy
    Castle.Proxies.IRecordParserProxy
    Castle.Proxies.IUnzipperProxy
    Castle.Proxies.IFileStoreProxy
    Castle.Proxies.ILocationServiceProxy

public class UkExtractFileHandler : ExtractFileHandler<UkExtractFileHandler.FileMapper>
{
    public UkExtractFileHandler(
          ILoggerFactory loggerFactory, 
          IRecordParser recordParser, 
          IUnzipper unzipper, 
          IFileStore fileStore, 
          ILocationService locationService) 
        : base(recordParser, unzipper, fileStore, locationService)
    {
        Logger = loggerFactory.Create<ExtractFileHandler>();
    }
}

    public class ExtractFileHandler<T>
    {
        public ExtractFileHandler(
            IRecordParser recordParser, 
            IUnzipper unzipper, 
            IFileStore fileStore, 
            ILocationService locationService)                 
        {
            // ...
        }
    }

public class ExtractFileHandler<T> : ExtractFileHandler
{

}

public class ExtractFileHandler
{
    public ExtractFileHandler(
        IRecordParser recordParser, 
        IUnzipper unzipper, 
        IFileStore fileStore, 
        ILocationService locationService)
    {
        // ...
    }
}

var mockFileHandler = new Mock<ExtractFileHandler>(
   mockLoggerFactory.Object, <- this par. probably doesn't match the constructor signature 
   mockRecordParser.Object, 
   mockUnzipper.Object, 
   mockFileStore.Object, 
   mockLocationService.Object);