这安全吗？ - NUnit 基类打开并回滚 TransactionScope

发布于 2024-07-09 01:34:40 字数 606 浏览 10 评论 0原文

我认为为 NUnit 测试装置创建一个基类会很好，该基类在设置阶段打开 TransactionScope，然后在拆卸过程中回滚事务。像这样的事情：

    public abstract class TestFixtureBase
{
    private TransactionScope _transaction;

    [TestFixtureSetUp]
    public void TestFixtureSetup()
    {
        _transaction = new TransactionScope();
    }

    [TestFixtureTearDown]
    public void TestFixtureTearDown()
    {
        if (_transaction != null)
        {
            _transaction.Dispose();
        }
    }
}

你认为这是个好主意吗？

显然，该数据库只是一个测试数据库，而不是一个实时数据库，但如果它充满了单元测试中的垃圾数据，它仍然会很烦人。

当运行涉及大量数据访问的单元测试时，其他人会做什么？

原文

I was thinking it would be nice to create a base class for NUnit test fixtures that opens a TransactionScope during the SetUp phase, then rolls back the transaction during tear down.
Something like this:

    public abstract class TestFixtureBase
{
    private TransactionScope _transaction;

    [TestFixtureSetUp]
    public void TestFixtureSetup()
    {
        _transaction = new TransactionScope();
    }

    [TestFixtureTearDown]
    public void TestFixtureTearDown()
    {
        if (_transaction != null)
        {
            _transaction.Dispose();
        }
    }
}

Do you think this is a good idea?

Obviously the database is just a test database, not a live database, but it would still be annoying if it filled up with junk data from the unit tests.

What do other people do when running unit tests that involve a lot of data access?

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生死何惧 2024-07-16 01:34:40

你在这里要小心。如果您打开多个数据库连接，TransactionScope 会将事务提升为分布式事务。我发现在开始运行测试之前编写一些简单的 SQL 来清除测试类感兴趣的表会更容易。

编辑：通常我会将任何涉及数据库的测试称为集成测试，因为它涉及另一个系统。通常，我会在对代码进行单元测试时模拟数据库。

[TestSetup]
public void Setup()
{
   foreach (string table in new string[] { "table1", "table2" })
   {
        ClearTable( table );
   }
}

private void ClearTable( string table )
{
     ...standard stuff to set up connection...
     SqlCommand command = connection.CreateCommand() );
     command.CommandText = "delete from " + table;
     command.ExecuteNonQuery();
     ... stuff to clean up connection...
}

You want to be careful here. TransactionScope is going to promote the transaction to a distributed transaction if you open up more than one connection to the database. I find that it is easier just to write some simple SQL that clears out the tables of interest to my test class before I start running the test.

EDIT: Normally I would call any test that touches the database an integration test since it involves another system. Typically, I will mock out the database when unit testing my code.

[TestSetup]
public void Setup()
{
   foreach (string table in new string[] { "table1", "table2" })
   {
        ClearTable( table );
   }
}

private void ClearTable( string table )
{
     ...standard stuff to set up connection...
     SqlCommand command = connection.CreateCommand() );
     command.CommandText = "delete from " + table;
     command.ExecuteNonQuery();
     ... stuff to clean up connection...
}

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