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TypeInitializationException: Failed to load SNI.dll when using DeploymentItem

See original GitHub issue

Failed to load SNI.dll when using DeploymentItem and running all tests in Visual Studio.

Exception message: System.TypeInitializationException: The type initializer for 'Microsoft.Data.SqlClient.SNINativeMethodWrapper' threw an exception. ---> System.ComponentModel.Win32Exception: Failed to load <path>\Out\x86\SNI.dll ---> System.ComponentModel.Win32Exception: The specified module could not be found
Stack trace:
Test Name:	ConnectorTest
Test Outcome:	Failed
Result StackTrace:	
at Microsoft.Data.SqlClient.SNINativeMethodWrapper..cctor()
--- End of inner exception stack trace ---
    at Microsoft.Data.SqlClient.SNINativeMethodWrapper.UnmanagedIsTokenRestricted(IntPtr token, Boolean& isRestricted)
   at Microsoft.Data.Win32NativeMethods.IsTokenRestrictedWrapper(IntPtr token)
   at Microsoft.Data.ProviderBase.DbConnectionPoolIdentity.GetCurrent()
   at Microsoft.Data.ProviderBase.DbConnectionPoolGroup.GetConnectionPool(DbConnectionFactory connectionFactory)
   at Microsoft.Data.ProviderBase.DbConnectionFactory.GetConnectionPool(DbConnection owningObject, DbConnectionPoolGroup connectionPoolGroup)
   at Microsoft.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection)
   at Microsoft.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions)
   at Microsoft.Data.ProviderBase.DbConnectionClosed.TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions)
   at Microsoft.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource`1 retry)
   at Microsoft.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry)
   at Microsoft.Data.SqlClient.SqlConnection.Open()
   at Library.Connector.Connect() in C:\Repos\SqlClientTransitive-DeploymentItem\Library\Connector.cs:line 11
   at Consumer.Program.Connect() in C:\Repos\SqlClientTransitive-DeploymentItem\Consumer\Program.cs:line 15
   at Consumer.UnitTest.ProgramTest.ConnectorTest() in C:\Repos\SqlClientTransitive-DeploymentItem\Consumer.UnitTest\ProgramTest.cs:line 12
Result Message:	
Test method Consumer.UnitTest.ProgramTest.ConnectorTest threw exception: 
System.TypeInitializationException: The type initializer for 'Microsoft.Data.SqlClient.SNINativeMethodWrapper' threw an exception. ---> System.ComponentModel.Win32Exception: Failed to load <path>\Out\x86\SNI.dll ---> System.ComponentModel.Win32Exception: The specified module could not be found

To reproduce

Clone repo with a repro scenario
Choose Test => Run All Tests.

The test fails with the exception as shown above. The test succeeds if the line containing DeploymentItem is commented out.

Further technical details

For the provided repo, the following is used:

Microsoft.Data.SqlClient version: 1.1.0
.NET target: .NET Framework 4.7.2
NuGet 5.3
Visual Studio 2019 16.4.2
C++ Runtime:
- Microsoft Visual C++ 2015-2019 Redistributable (x86) - 14.23.27820
- Microsoft Visual C++ 2015-2019 Redistributable (x64) - 14.23.27820
Operating System: Windows Server 2012 R2 Datacenter

In our intended solution, we use Microsoft.EntityFrameworkCore.SqlServer 3.1.1 instead of an explicit reference to Microsoft.Data.SqlClient.

Issue Analytics

State:
Created 4 years ago
Comments:5 (3 by maintainers)

Top GitHub Comments

1reaction

cheenamalhotracommented, Mar 2, 2020

Hi @mvandegoor

The issue seems to be due to below attribute on test method:

[DeploymentItem("Deployables")]

SNI.dll targets are currently not aware of this copy process and therefore do not perform any additional copying. Removing this attribute works normally.

I’m investigating as to whether we can add support for DeploymentItemAttribute or not since this is MSTest process. Will get back to you with further updates!

0reactions

lcheunglcicommented, Nov 29, 2022

Close due to inactivity.

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