Spring集成测试与手动事务管理

Question

我已经阅读了许多关于 Spring 集成测试的帖子和主题，但没有任何内容令人满意或有帮助。

我们将 Spring 3.2.3 与 Hibernate、Spring Data 和 Oracle 数据库一起使用。对于测试，我们还使用 DbUnit 和 Spring-test-dbunit。在生产代码中，事务由 Controller 启动，服务本身对事务一无所知。

所以，这是我的测试:

@ContextConfiguration // ...
@ActiveProfiles // ...
@RunWith(SpringJUnit4ClassRunner.class)
@TestExecutionListeners({
    DependencyInjectionTestExecutionListener.class,
    DirtiesContextTestExecutionListener.class,
    TransactionalTestExecutionListener.class,
    ModifiedDbUnitTestExecutionListener.class })
@DbUnitConfiguration(databaseConnection = "oracleConnection")
@DatabaseSetup("/database/snapshot/snapshot.xml")
public class IntegrationTest extends AbstractTransactionalJUnit4SpringContextTests
{
    @Test
    public void sampleTest()
    {
        // transaction is already started

        this.assertThatNewsContains(0);

        News news1 = new News();
        news1.setTitle("Test News 1");
        News savedNews1 = this.newsService.save(news1);
        Assert.assertTrue(savedNews1.getId() > 0);

        News news2 = new News();
        news2.setTitle("Test News 2");
        News savedNews2 = this.newsService.save(news2);
        Assert.assertTrue(savedNews2.getId() > 0);

        News news3 = new News();
        news3.setTitle("Test News 3");
        News savedNews3 = this.newsService.save(news3);
        Assert.assertTrue(savedNews3.getId() > 0);

        // transaction commit should occur HERE
        // @todo: HOW ?!

        this.assertThatNewsContains(3);
    }

    private void assertThatNewsContains(int newsSize)
    {
        List<News> allNews = this.newsService.getNews();
        Assert.assertEquals(newsSize, allNews.size());
    }

}

我发现的是，如果我用 @Transactional(propagation=Propagation.REQUIRES_NEW) 注释 NewsService测试工作正常，但与生产模式不同。 @Transactional(propagation=Propagation.REQUIRED)是不够的，因为 DbUnit-Spring-test 自己打开一个事务，而后者断言失败，因为该事务尚未提交。如何在执行最后一个断言之前提交事务？

Answer 1

我终于设法在单独的事务中执行了一些代码。

你需要

@Autowired
private PlatformTransactionManager          platformTransactionManager;

private TransactionTemplate             transactionTemplate;

在你的测试课上。然后您可以执行以下操作:

this.transactionTemplate = new TransactionTemplate(this.platformTransactionManager);

// note that parameters passed to the transaction must be final!
final Object parameter = something;

Object returnedValue = this.transactionTemplate.execute(new TransactionCallback<Object>()
    {
        @Override
        public Object doInTransaction(TransactionStatus status)
        {
            return doSomethingAndReturnAnObject(parameter);
        }
    }
);