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使用NUnit Console运行.NET8测试时加载SNI.dll失败求助

解决NUnit Console运行时无法加载Microsoft.Data.SqlClient.SNI.dll的问题

问题场景

测试用例在Visual Studio搭配ReSharper运行完全正常,但使用nunit3-console.exe执行时抛出以下异常:

System.TypeInitializationException : The type initializer for 'Microsoft.Data.SqlClient.TdsParser' threw an exception.
  ----> System.TypeInitializationException : The type initializer for 'Microsoft.Data.SqlClient.SNILoadHandle' threw an exception.
  ----> System.DllNotFoundException : Unable to load DLL 'Microsoft.Data.SqlClient.SNI.dll' or one of its dependencies: The specified module could not be found. (0x8007007E)
   at Microsoft.Data.SqlClient.TdsParser..ctor(Boolean MARS, Boolean fAsynchronous)
   at Microsoft.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(ServerInfo serverInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString connectionOptions, SqlCredential credential, TimeoutTimer timeout)
   at Microsoft.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(TimeoutTimer timeout, SqlConnectionString connectionOptions, SqlCredential credential, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance)
   at Microsoft.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, SqlCredential credential, Object providerInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString userConnectionOptions, SessionData reconnectSessionData, Boolean applyTransientFaultHandling, String accessToken, DbConnectionPool pool, Func`3 accessTokenCallback)
   at Microsoft.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions)

环境配置:.NET 8、NUnit 4.1.0、NUnit Console 3.17.0,已尝试降级NUnit版本无效。

解决方案

1. 指定运行时标识符(RuntimeIdentifier)

在测试项目的.csproj中添加明确的运行时架构,确保原生依赖被正确复制到输出目录:

<PropertyGroup>
    <!-- 保留原有配置 -->
    <TargetFramework>net8.0</TargetFramework>
    <ImplicitUsings>enable</ImplicitUsings>
    <Nullable>enable</Nullable>
    <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
    <!-- 添加运行时架构,根据系统选择win-x64/win-x86 -->
    <RuntimeIdentifier>win-x64</RuntimeIdentifier>
</PropertyGroup>

重新生成项目后,再用nunit3-console.exe执行测试。

2. 使用dotnet test替代nunit3-console.exe

dotnet test对.NET Core/.NET 5+的运行时依赖处理更完善,能自动加载原生DLL:

dotnet test YourTestProject.csproj --configuration Release

3. 手动复制SNI.dll到输出目录

从NuGet缓存中找到对应架构的Microsoft.Data.SqlClient.SNI.dll,复制到测试项目的输出目录(如bin\Release\net8.0):

  • 缓存路径示例:C:\Users\<你的用户名>\.nuget\packages\microsoft.data.sqlclient.sni\5.2.0\runtimes\win-x64\native
  • 选择与测试项目架构匹配的版本(x64/x86)

4. 匹配NUnit Console的运行时架构

如果测试项目是x64架构,确保使用x64版本的nunit3-console.exe,或在命令中指定架构:

nunit3-console.exe YourTestProject.dll --x64

5. 更新兼容的包版本

  • 升级Microsoft.Data.SqlClient到最新稳定版(如6.0+),确保与.NET 8完全兼容
  • 升级NUnit.Console到支持.NET 8的版本(如3.18.1及以上)

内容的提问来源于stack exchange,提问作者walie

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最近更新时间:2026.06.24 17:05:15