Question

我有以下代码

public class SampleClass
    {
        static string sampleString = GetString("sample");

        public static string GetString(string p)
        {
            return DatabaseInteraction.GetData(p);
        }
    }

    public static class DatabaseInteraction
    {
        public static string GetData(string p)
        {
            ///In actual implementation it is call to database
            return string.Empty;
        }
    }

在这段代码中，我想模拟SampleClass的GetString方法的行为。但是，当我为此写鼹鼠时，代码抛出异常，说静态初始化时发生了一些错误。我无法在这里得到问题。错误消息：

System.TypeInitializationException: The type initializer for 'MDatabaseInteraction
.GetString' threw an exception. ---> System.Configuration.ConfigurationErrorsException: The requested database dbPortalOracle is not defined in configuration.

StackTrace:
           at Microsoft.Practices.EnterpriseLibrary.Data.DatabaseConfigurationView.ValidateConnectionStringSettings(String name, ConnectionStringSettings connectionStringSettings)
            at Microsoft.Practices.EnterpriseLibrary.Data.DatabaseConfigurationView.GetConnectionStringSettings(String name)
            at Microsoft.Practices.EnterpriseLibrary.Data.DatabaseCustomFactory.CreateObject(IBuilderContext context, String name, IConfigurationSource configurationSource, ConfigurationReflectionCache reflectionCache)
            at Microsoft.Practices.EnterpriseLibrary.Common.Configuration.ObjectBuilder.ConfiguredObjectStrategy.BuildUp(IBuilderContext context, Type t, Object existing, String id)
            at Microsoft.Practices.ObjectBuilder.BuilderStrategy.BuildUp(IBuilderContext context, Type typeToBuild, Object existing, String idToBuild)
            at Microsoft.Practices.ObjectBuilder.SingletonStrategy.BuildUp(IBuilderContext context, Type typeToBuild, Object existing, String idToBuild)
            at Microsoft.Practices.ObjectBuilder.BuilderStrategy.BuildUp(IBuilderContext context, Type typeToBuild, Object existing, String idToBuild)
            at Microsoft.Practices.EnterpriseLibrary.Common.Configuration.ObjectBuilder.ConfigurationNameMappingStrategy.BuildUp(IBuilderContext context, Type t, Object existing, String id)
            at Microsoft.Practices.ObjectBuilder.BuilderBase`1.DoBuildUp(IReadWriteLocator locator, Type typeToBuild, String idToBuild, Object existing, PolicyList[] transientPolicies)
            at Microsoft.Practices.ObjectBuilder.BuilderBase`1.BuildUp(IReadWriteLocator locator, Type typeToBuild, String idToBuild, Object existing, PolicyList[] transientPolicies)
            at Microsoft.Practices.ObjectBuilder.BuilderBase`1.BuildUp[TTypeToBuild](IReadWriteLocator locator, String idToBuild, Object existing, PolicyList[] transientPolicies)
            at Microsoft.Practices.EnterpriseLibrary.Common.Configuration.ObjectBuilder.EnterpriseLibraryFactory.BuildUp[T](IReadWriteLocator locator, String id, IConfigurationSource configurationSource)
            at Microsoft.Practices.EnterpriseLibrary.Common.Configuration.ObjectBuilder.EnterpriseLibraryFactory.BuildUp[T](String id, IConfigurationSource configurationSource)
            at Microsoft.Practices.EnterpriseLibrary.Common.Configuration.ObjectBuilder.NameTypeFactoryBase`1.Create(String name)
            at Microsoft.Practices.EnterpriseLibrary.Data.DatabaseFactory.CreateDatabase(String name)

我怀疑的是，如果我将方法转移到为什么要创建数据库呢？谁能告诉我这里有什么问题？谢谢 Ashwani

Answer 1

moles框架不支持由静态构造函数调用的绕行代码。方法GetString(string)由类SampleClass的静态构造函数调用。由于不支持绕行，GetString表现得并不是因为它没有被mo。这样就调用了你的db工厂。

从版本v0.92.50603.1开始，有一个属性让你“擦除”静态构造函数调用。

从痣手册：

静态构造函数专门用Moles处理。有可能的指定给定类型的静态构造函数应该是简单地删除。这是通过 [MolesEraseStaticConstructor]属性如下：

[assembly: MolesEraseStaticConstructor(typeof(MyStatic))]
class MyStatic {
    static MyStatic() {
        throw new Exception(); // needs moling…
    }
}

将Microsoft Moles与静态变量一起使用

1 个答案: