为什么EF &;如果我试图在父类中使用TransactionScope，则抛出异常

本文关键字：TransactionScope 抛出异常父类 EF 如果为什么 | 更新日期: 2023-09-27 18:19:03

如果我这样做:

public class AIntegrationTests
{
    protected TransactionScope transaction = null;
    [SetUp]
    public void SetUp()
    {
        transaction = new TransactionScope(TransactionScopeOption.Required);
    }
    [TearDown]
    public void TearDown()
    {
        transaction.Dispose();
    }
}
[TestFixture]
public class UserRepositoryIntegrationTests : AIntegrationTests
{
    private UserRepository _sut;
    [SetUp]
    public void SetUp()
    {
        _sut = new UserRepository();
    }
    //tests
}

我得到这个错误:

 network access for distributed transaction manager (msdtc) has been disabled 
Please enable Network DTC access because of qlBulkCopy.WriteToServer(DataTable table) 
for particular database

当我从父类中删除事务实例化并将其放回子类时没有错误。

public class AIntegrationTests
{
    protected TransactionScope transaction = null;
    [SetUp]
    public void SetUp()
    {
    }
    [TearDown]
    public void TearDown()
    {
        transaction.Dispose();
    }
}
[TestFixture]
public class UserRepositoryIntegrationTests : AIntegrationTests
{
    private UserRepository _sut;
    [SetUp]
    public void SetUp()
    {
        _sut = new UserRepository();
       transaction = new TransactionScope(TransactionScopeOption.Required);
    }
    //tests
}

为什么不允许在父类中实例化事务?如果我留下处置电话

为什么EF &;如果我试图在父类中使用TransactionScope，则抛出异常

派生类中的SetUp()隐藏了基类中的SetUp()，因此AIntegrationTests的SetUp()永远不会被调用。从UserRepositoryIntegrationTests的SetUp()…中显式调用它

[TestFixture]
public class UserRepositoryIntegrationTests : AIntegrationTests
{
    private UserRepository _sut;
    [SetUp]
    public void SetUp()
    {
        _sut = new UserRepository();
        base.SetUp();
    }
    //tests
}

既然你可以控制这两个类，你应该让SetUp() virtual在基类中，并覆盖它…

public class AIntegrationTests
{
    protected TransactionScope transaction = null;
    [SetUp]
    public virtual void SetUp()
    {
        transaction = new TransactionScope(TransactionScopeOption.Required);
    }
    [TearDown]
    public void TearDown()
    {
        transaction.Dispose();
    }
}
[TestFixture]
public class UserRepositoryIntegrationTests : AIntegrationTests
{
    private UserRepository _sut;
    [SetUp]
    public override void SetUp()
    {
        _sut = new UserRepository();
        base.SetUp();
    }
    //tests
}