Vb.net Nunit:使用UnitTestExtensions时出错

将xtunit与nunit一起使用时出现以下错误。我想使用xtunit的rollback属性。 我在gui上运行nunit

Server stack trace:
at System.Data.Common.ITransactionExportFactory.Create(UInt32 DTCLength, Byte[] DTCAddr, ITransactionExport& export)
at System.Data.SqlClient.Transaction.CreateTransactionExport(Byte[] dtcAddr, UInt32 dtcLength, ITransaction transaction, ITransactionExport& transactionExport)
at System.Data.SqlClient.Transaction.GetTransactionCookie(Byte[] dtcAddr, ITransaction transaction, ITransactionExport& transactionExport, Byte[]& cookie, Int32& length)
at System.Data.SqlClient.SqlInternalConnection.EnlistNonNullDistributedTransaction(ITransaction transaction)
at System.Data.SqlClient.SqlInternalConnection.EnlistDistributedTransaction(ITransaction newTransaction, Guid newTransactionGuid)
at System.Data.SqlClient.SqlInternalConnection.EnlistDistributedTransaction()
at System.Data.SqlClient.SqlInternalConnection.Activate(Boolean isInTransaction)
at System.Data.SqlClient.SqlConnection.Open()
....

Exception rethrown at [0]:
at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)

我有一个从基类继承的基类

public class test
 Inherits TeamAgile.ApplicationBlocks.Interception.UnitTestExtensions.ExtensibleFixture