我派生自这个基类,以便将每个单独的测试封装到一个回滚的事务中
public abstract class TransactionBackedTest
{
private TransactionScope _transactionScope;
[SetUp]
public void TransactionSetUp()
{
var transactionOptions = new TransactionOptions
{
IsolationLevel = IsolationLevel.ReadCommitted,Timeout = TransactionManager.MaximumTimeout
};
_transactionScope = new TransactionScope(TransactionScopeOption.required,transactionOptions);
}
[TearDown]
public void TransactionTearDown()
{
_transactionScope.Dispose();
}
}
使用这个我也尝试以相同的方式设置TestFixure事务：
[TestFixture]
class Example: TransactionBackedTest
{
private TransactionScope _transactionScopeFixure;
[TestFixtureSetUp]
public void Init()
{
var transactionOptions = new TransactionOptions
{
IsolationLevel = IsolationLevel.ReadCommitted,Timeout = TransactionManager.MaximumTimeout
};
_transactionScopeFixure = new TransactionScope(TransactionScopeOption.required,transactionOptions);
SetupAllDataForAllTest();
}
[TestFixtureTearDown]
public void FixtureTearDown()
{
_transactionScopeFixure.Dispose();
}
public void SetupAllDataForAllTest()
{
// sql stuff here that will get undone from the TestFixtureTearDown scope dispose
}
[Test]
public void DosqlStuff1()
{
// sql stuff here that will get undone from the TransactionBackedTest
}
[Test]
public void DosqlStuff2()
{
// sql stuff here that will get undone from the TransactionBackedTest
}
}
想法是SetupAllDataForAllTest在开始时运行一次并插入测试依赖的所有基础数据.测试完成后,需要删除/回滚此基础数据.
我也希望每个测试都是隔离的,这样它们也不会互相干扰.
我现在遇到的问题是,在第一次测试之后,它表明TestFixture事务已经关闭,即使我只想让它关闭SetUp事务.我的假设是,如果你Dispose()和内部事务它会外部,所以我不知道如何完成我想做的事情
解决方法
您没有说出您使用的数据库.
在MS sql Server中,如果你在另一个事务中使用BEGIN TRANSACTION(使它们嵌套)然后在嵌套事务中使用ROLLBACK TRANSACTION,它将回滚所有内容(整个外部事务也是如此).
ROLLBACK TRANSACTION without a savepoint_name or transaction_name
rolls back to the beginning of the transaction. When nesting
transactions,this same statement rolls back all inner transactions to
the outermost BEGIN TRANSACTION statement.
为了能够仅回滚内部嵌套事务,它应该在SAVE TRANSACTION <name>之前以嵌套事务的某个名称启动.然后你可以ROLLBACK< name>回滚只是嵌套的部分.
如果您正在使用其他数据库,则嵌套事务中的行为可能会有所不同.
我不知道如何使您的类发出正确的BEGIN或SAVE TRANSACTION sql语句,具体取决于事务是否嵌套.
