java - TransactionSynchronizationManager 内的单元测试代码

Question

我找不到有效的解决方案，如何对 TransactionSynchronizationManager.registerSynchronization() 内部发生的事情进行单元测试。我有这样的代码:

pubclic class MyService {
    public void method() {
        TransactionSynchronizationManager.registerSynchronization(new TransactionSynchronizationAdapter()
                        {
                            @Override
                            public void afterCommit()
                            {
                                myService.callSmth(params);
                            }
                        }
    }
}

这里我调用method():

public class MyClass {

    private MyService myService;

    public void method2() {
        myService.method();
    }
}

在我的单元测试中，我需要验证 myService.callSmth。但似乎测试代码没有进入 afterCommit() 方法。这是我的测试类:

@Configurable
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = { "classpath*:test-applicationContext.xml" })
public class ServiceTest extends TestHelper
{
    @Mock
    MyService myService;

    @InjectMocks
    MyClass myClass;

    @Test
    public void allowWriteOffGlobal()
    {
         myClass.method();
         veryfy(myService).method();
    }
}

我简化了我的代码，请不要注意模拟和类似的错误。在调试器中，我看到流程如何到达 TransactionSynchronizationManager.registerSynchronization 行并跳过 afterCommit() 方法。P.s.:不确定我提供了足够的信息。如果有额外的需要，请在评论中写下。谢谢。

Answer 1

来自Spring Test documentation (强调我的):

Annotating a test method with @Transactional causes the test to be run within a transaction that will, by default, be automatically rolled back after completion of the test. If a test class is annotated with @Transactional, each test method within that class hierarchy will be run within a transaction. Test methods that are not annotated with @Transactional (at the class or method level) will not be run within a transaction. Furthermore, tests that are annotated with @Transactional but have the propagation type set to NOT_SUPPORTED will not be run within a transaction.

和

By default, test transactions will be automatically rolled back after completion of the test; however, transactional commit and rollback behavior can be configured declaratively via the @Commit and @Rollback annotations at the class level and at the method level.

所以我建议在您的测试方法中添加一个@Commit注释。 (根据您描述的行为，我认为您正在使用 Spring Test，否则此建议不适用)。