c# 中的模拟依赖不起作用

Question

我可以模拟会话，但是我无法成功模拟会话配置 class。如果你在这个 post 的底部看到我的单元测试 class 调用我的 class 的连接方法。在调试连接方法中的设置对象时始终为空。你能告诉我可能有什么问题吗

我有一个 class 叫做 XYZ。它在其中声明了 FixSessionConfiguration 依赖项，称为

Class XYZ
{
    [Dependency]
        public FixSessionConfiguration Settings
        {
            get;
            set;
        }

      public void Connect()
      {
            iFixSession = new FixSession(
            Settings.SenderCompID,
            Settings.TargetCompID,
            Settings.Version,
            Settings.SetResetSeqNumFlag);
      }
}

我基本上需要为我的单元测试模拟 FixSessionConfiguration class。为此，我为会话配置创建了界面。这是代码

public class FixSessionConfiguration : SessionConfiguration,ISessionConfiguration
    {       
        [ConfigurationProperty("senderSubID")]
        public string SenderSubID
        {
            get { return (string)this["senderSubID"]; }
            set { this["senderSubID"] = value; }
        }

        [ConfigurationProperty("senderLocationID")]
        public string SenderLocationID
        {
            get { return (string)this["senderLocationID"]; }
            set { this["senderLocationID"] = value; }
        }

        [ConfigurationProperty("targetSubID")]
        public string TargetSubID
        {
            get { return (string)this["targetSubID"]; }
            set { this["targetSubID"] = value; }
        }

       public new string SenderCompID { get; set; }
        public new string TargetCompID { get; set; }
        ProtocolVersion Version { get; set; }
        public new bool SetResetSeqNumFlag { get; set; }
        public new string Host { get; set; }
        public new int Port { get; set; }
}

作为第三方二进制文件的一部分的 SessionConfiguration class。

public class SessionConfiguration : ConfigurationSection
    {
        [ConfigurationProperty("host", IsRequired = true)]
        public string Host
        {
            get { return (string)this["host"]; }
            set { this["host"] = value; }
        }

        [ConfigurationProperty("port", IsRequired = true)]        
        public int Port
        {
            get { return (int)this["port"]; }
            set { this["port"] = value; }
        }

        [ConfigurationProperty("senderCompID", IsRequired = true)]
        public string SenderCompID
        {
            get { return (string)this["senderCompID"]; }
            set { this["senderCompID"] = value; }
        }

        [ConfigurationProperty("targetCompID", IsRequired = true)]
        public string TargetCompID
        {
            get { return (string)this["targetCompID"]; }
            set { this["targetCompID"] = value; }
        }

        [ConfigurationProperty("fixVersion", IsRequired = true)]
        public ProtocolVersion Version
        {
            get
            {
                return (ProtocolVersion)this["fixVersion"];
            }
            set { this["fixVersion"] = value; }
        }



        [ConfigurationProperty("keepSequenceNumbersAfterLogout", IsRequired = true)]        
        public bool KeepSequenceNumbersAfterLogout
        {
            get { return (bool)this["keepSequenceNumbersAfterLogout"]; }
            set { this["keepSequenceNumbersAfterLogout"] = value; }
        }
}

我为 SessionConfiguration 创建的接口 class。

public interface ISessionConfiguration 
    {

        string SenderCompID { get; set; } 
        string TargetCompID { get; set; }
        ProtocolVersion Version { get; set; }
        bool SetResetSeqNumFlag { get; set; }
        string Host { get; set; }
        int Port { get; set; }

    }

我的单元测试class

  Class UnitTest
    {
      private Mock<ISessionConfiguration> _mockSessionConfiguration;
    [Fact]
            public void Buy_QuoteAndDeal()
            {
        _mockSessionConfiguration = new Mock<ISessionConfiguration>();
        _mockSessionConfiguration.Setup(x => x.SenderCompID).Returns("BESTINVESTLON");
                _mockSessionConfiguration.Setup(x => x.TargetCompID).Returns("WINS");
                _mockSessionConfiguration.Setup(x => x.Version).Returns(ProtocolVersion.FIX42);
                _mockSessionConfiguration.Setup(x => x.SetResetSeqNumFlag).Returns(true);
                _mockSessionConfiguration.Setup(x => x.Host).Returns("localhost");
                _mockSessionConfiguration.Setup(x => x.Port).Returns(4500);

     shareDealingEngine.Connect();
    }
    }

Answer 1

由于 class 属性是 FixSessionConfiguration 而不是 ISessionConfiguration，您的模拟将无法工作。由于 FixSessionConfiguration 没有虚拟属性，你也不能模拟它，真的。

真的，您应该将 XYZ 属性从 FixSessionConfiguration 更改为 ISessionConfiguration - 这将允许您模拟它 - 但您的测试仍然无法正常工作，因为您没有将模拟传递到您的 class 还。您需要执行以下操作：

var myClass = new XYZ();
myClass.Settings = _mockSessionConfiguration.Object;
// insert test code here

同样，理想情况下，设置将通过构造函数传入，但这与您面临的问题并没有真正的关系。

c# 中的模拟依赖不起作用

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