.NET Moq mock internal类型

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问题

1. Can not create proxy for type xxx because type xxx is not accessible. Make it public, or internal and mark your assembly with [assembly: InternalsVisibleTo("DynamicProxyGenAssembly2, PublicKey=0024000004800000940000000602000000240000525341310004000001000100c547cac37abd99c8db225ef2f6c8a3602f3b3606cc9891605d02baa56104f4cfc0734aa39b93bf7852f7d9266654753cc297e7d2edfe0bac1cdcf9f717241550e0a7b191195b7667bb4f64bcb8e2121380fd1d9d46ad2d92d2d15605093924cceaf74c4861eff62abf69b9291ed0a340e113be11e6a7d3113e92484cf7045cc7")] attribute, because assembly Microsoft.Extensions.Logging.Abstractions is strong-named. (Parameter 'interfaceToProxy')
2.     at Castle.DynamicProxy.DefaultProxyBuilder.AssertValidTypeForTarget(Type type, Type target, String paramName)
3.    at Castle.DynamicProxy.DefaultProxyBuilder.AssertValidTypeForTarget(Type type, Type target, String paramName)
4.    at Castle.DynamicProxy.DefaultProxyBuilder.AssertValidType(Type target, String paramName)
5.    at Castle.DynamicProxy.DefaultProxyBuilder.CreateInterfaceProxyTypeWithoutTarget(Type interfaceToProxy, Type[] additionalInterfacesToProxy, ProxyGenerationOptions options)
6.    at Castle.DynamicProxy.ProxyGenerator.CreateInterfaceProxyTypeWithoutTarget(Type interfaceToProxy, Type[] additionalInterfacesToProxy, ProxyGenerationOptions options)
7.    at Castle.DynamicProxy.ProxyGenerator.CreateInterfaceProxyWithoutTarget(Type interfaceToProxy, Type[] additionalInterfacesToProxy, ProxyGenerationOptions options, IInterceptor[] interceptors)
8.    at Moq.CastleProxyFactory.CreateProxy(Type mockType, IInterceptor interceptor, Type[] interfaces, Object[] arguments) in C:\projects\moq4\src\Moq\Interception\CastleProxyFactory.cs:line 50

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解决方法

.NET Framework以及.NET(Core) 5之前的版本

在AssemblyInfo.cs文件里添加 InternalsVisibleTo 声明

1. // This assembly is the default dynamic assembly generated by Castle DynamicProxy,
2. // used by Moq. If your assembly is strong-named, paste the following in a single line:
3. [assembly:InternalsVisibleTo("DynamicProxyGenAssembly2,PublicKey=0024000004800000940000000602000000240000525341310004000001000100c547cac37abd99c8db225ef2f6c8a3602f3b3606cc9891605d02baa56104f4cfc0734aa39b93bf7852f7d9266654753cc297e7d2edfe0bac1cdcf9f717241550e0a7b191195b7667bb4f64bcb8e2121380fd1d9d46ad2d92d2d15605093924cceaf74c4861eff62abf69b9291ed0a340e113be11e6a7d3113e92484cf7045cc7")]
5. // Or, if your own assembly is not strong-named, omit the public key:
6. [assembly:InternalsVisibleTo("DynamicProxyGenAssembly2")]

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参考：https://github.com/devlooped/moq/wiki/Quickstart
.NET 5以后的版本

.NET 5以后默认不再生成AssemblyInfo.cs文件，因此需要在项目的csproj文件里添加InternalsVisibleTo配置

1.    <ItemGroup>
2.        <InternalsVisibleTo Include="DynamicProxyGenAssembly2, PublicKey=0024000004800000940000000602000000240000525341310004000001000100c547cac37abd99c8db225ef2f6c8a3602f3b3606cc9891605d02baa56104f4cfc0734aa39b93bf7852f7d9266654753cc297e7d2edfe0bac1cdcf9f717241550e0a7b191195b7667bb4f64bcb8e2121380fd1d9d46ad2d92d2d15605093924cceaf74c4861eff62abf69b9291ed0a340e113be11e6a7d3113e92484cf7045cc7" />
3.    </ItemGroup>

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参考链接

• https://github.com/devlooped/moq/wiki/Quickstart
  
• https://learn.microsoft.com/en-us/dotnet/core/project-sdk/msbuild-props#internalsvisibleto
  

来源:https://www.cnblogs.com/netry/Undeclared/dotnet-moq-mock-internal-type.html
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