如何在依赖于tapestry的项目中测试DAO层

Question

我有一个tapestry5 + hibernate应用程序,我正在尝试编写单元测试.我正在寻找一些指导或最佳实践来测试这类项目中的DAO层.我尝试使用testng下面的测试用例,但它没有用.

@Test
public void createOrderTest() {
    IOCUtilities.buildDefaultRegistry();
    OrderManager orderManager = new OrderManager();
    Order o1 = new Order();
    Date date = new Date(System.currentTimeMillis());
    o1.setOrderDate(date);
    o1.setOrderStatus(OrderStatus.BILLED.toString());
    orderManager.createOrder(o1);
}

我尝试运行测试用例时收到错误消息.

java.lang.IllegalArgumentException: Contribution org.apache.tapestry5.yuicompressor.services.YuiCompressorModule.contributeMinimizers(MappedConfiguration) (at YuiCompressorModule.java:42) is for service 'interface org.apache.tapestry5.services.assets.ResourceMinimizer' qualified with marker annotations [interface org.apache.tapestry5.ioc.annotations.Primary], which does not exist.
at org.apache.tapestry5.ioc.internal.RegistryImpl.validateContributeDefs(RegistryImpl.java:246)
at org.apache.tapestry5.ioc.internal.RegistryImpl.<init>(RegistryImpl.java:205)
at org.apache.tapestry5.ioc.RegistryBuilder.build(RegistryBuilder.java:177)
at org.apache.tapestry5.ioc.IOCUtilities.buildDefaultRegistry(IOCUtilities.java:51)
at com.vc.xpressor.testng.OrderManagerTest.createOrderTest(OrderManagerTest.java:21)

Answer 1

如果在DAO中使用构造函数注入,则在DAO测试中根本不需要tapestry.我是否正确你的DAO所需的唯一依赖是hibernate会话,也许是几个@Symbols？

如果是这样,您只需要建立与内存数据库(例如h2)的连接并将其包装在休眠会话中.然后将hibernate会话传递给DAO构造函数.

我为我的DAO使用基础测试类,它在@Before方法中设置连接和会话

这是DAO示例

public class ItemDAOImpl implements ItemDAO {
    private final Session session;

    public ItemDAOImpl(Session session) {
        this.session = session;
    }

    public List<Item> findAll() {
        return session.createCriteria(Item.class).list();
    }

    ....
}

在Tapestry中,这是在AppModule中声明的

public static void bind(ServiceBinder binder) {
    binder.bind(ItemDAO.class, ItemDAOImpl.class);
}

但在我的测试用例中,我不需要Tapestry

public class ItemDAOImplTest extends AbstractHibernateTest {
    private ItemDAO itemDAO;

    @Override
    protected void before() {
        itemDAO = new ItemDAOImpl(session);
    }

    @Override
    protected void after() {}

    @Test
    public void testFindAll() {
        session.save(new Item(...));
        session.save(new Item(...));
        session.save(new Item(...));
        assertEquals(3, itemDAO.findAll().size());
    }
}

public abstract class AbstractHibernateTest {
    protected SessionFactory sessionFactory;
    protected Session session;

    @Before
    public void abstractBefore() throws Exception {
        Configuration config = new Configuration();

        // see PackageNameHibernateConfigurer source code to dynamically add all
        // classes in the entities package
        config.addAnnotatedClass(Item.class);
        config.addAnnotatedClass(...);

        config.setProperty("hibernate.dialect", "org.hibernate.dialect.H2Dialect");
        config.setProperty("hibernate.connection.driver_class", "org.h2.Driver");
        config.setProperty("hibernate.connection.url", "jdbc:h2:mem:test");
        config.setProperty("hibernate.hbm2ddl.auto", "create");
        config.setProperty("hibernate.show_sql", "true");
        config.setProperty("hibernate.format_sql", "true");

        sessionFactory = config.buildSessionFactory();
        session = sessionFactory.openSession();
        session.beginTransaction();
        before();
    }

    protected abstract void before() throws Exception;

    @After
    public void abstractAfter() throws Exception {
        Exception exception = null;
        try {
            after();
        } catch (Exception e) {
            exception = e;
        }

        session.getTransaction().rollback();
        session.close();
        sessionFactory.close();

        if (exception != null) {
            throw exception;
        }
    }

    protected abstract void after() throws Exception;
}