使用DBUnit進行Dao測試：方法拋出`'org.dbunit.dataset.NoSuchTableException

Question

我正在嘗試使用DBUnit來測試DAO功能。 為此，我正在嘗試從xml文件加載數據集。 但是，有些觀點使我感到困惑。 讓我先發布我的代碼以獲得一些見解。

public class MyDaoTest extends DatabaseTestCase
{
    private XmlDataSet loadedDataSet;

    MyDao dao;

    protected void setUp() throws Exception
    {
        dao = new CourierUploadQueueMilestonedDaoImpl();
        super.setUp();
    }

    @Override
    protected IDatabaseConnection getConnection() throws Exception
    {
        Class driverClass = Class.forName("com.mysql.jdbc.Driver");
        Connection jdbcConnection = DriverManager.getConnection("jdbc:mysql://localhost/test", "root", "root");
        return new DatabaseConnection(jdbcConnection);
    }

    @Override
    protected IDataSet getDataSet() throws Exception
    {
        FileInputStream in = new FileInputStream("dataset.xml");
        loadedDataSet = new XmlDataSet(in);
        return loadedDataSet;
    }

    protected DatabaseOperation getSetUpOperation() throws Exception
    {
        return DatabaseOperation.CLEAN_INSERT;
    }

    protected DatabaseOperation getTearDownOperation() throws Exception
    {
        return DatabaseOperation.NONE;
    }

    public void testCheckLoginDataLoaded() throws Exception
    {
        assertNotNull(loadedDataSet);
        int rowCount = loadedDataSet.getTable("person").getRowCount();
        assertEquals(2, rowCount);
    }
}

數據集文件是dataset.xml

<?xml version='1.0' encoding='UTF-8'?>
<dataset>
    <person id="25" name="Saurabh" phone="61458972564"/>
    <person id="21" name="Saurabh" phone="61458972564"/>
</dataset>

問題：

1. 我收到異常“方法拋出'org.dbunit.dataset.NoSuchTableException' exception." 調試時，在"loadedDataSet"變量"loadedDataSet"不到任何數據。 DatabaseOperation.CLEAN_INSERT operation in getSetUpOperation()配置DatabaseOperation.CLEAN_INSERT operation in getSetUpOperation()不是初始化數據集所需要的嗎？

2. 由於我使用xml文件填充數據集，為什么我需要在getConnection（）中提供MySQL連接詳細信息？ 它的意義是什么？ 我可以在這里使用其他東西嗎？ 我不希望它訪問我的mysql數據庫。 我想要的行為是從xml文件讀取，在進行任何插入和更新的情況下寫入xml文件，然后在該方法完成后立即將數據集還原為其原始內容。

3. 我不想使用新的運算符來創建DAO類的實例。 我想使用spring托管實例。 我試着做

   String [] configLocations = {“” classpath：applicationContext.xml“};
   ApplicationContext ctx =新的ClassPathXmlApplicationContext（configLocations）; personDao =（PersonDao）ctx.getBean（“ personDao”）;

然而。 它給了我

Method threw   'org.springframework.beans.factory.BeanDefinitionStoreException' exception.
Unexpected exception parsing XML document from class path resource [applicationContext.xml]
detailMessage : org/springframework/core/type/AnnotatedTypeMetadata

Answer 1

我發現將DBUnit與Spring一起使用的最簡單方法是按照以下步驟進行測試

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:applicationContext-test.xml")
@DatabaseSetup("/dataset.xml")
@TestExecutionListeners({ DependencyInjectionTestExecutionListener.class,
        DirtiesContextTestExecutionListener.class,
        TransactionalTestExecutionListener.class,
        DbUnitTestExecutionListener.class })
public class SomeTest {


@Test
public void test1() {
 .....
}

}

您需要遵循pom中的com.github.springtestdbunit.annotation.DatabaseSetup類依賴項

<dependency>
    <groupId>com.github.springtestdbunit</groupId>
    <artifactId>spring-test-dbunit</artifactId>
    <version>1.2.1</version>
    <scope>test</scope>
</dependency>

applicationContext-test.xml是

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
    xmlns:jpa="http://www.springframework.org/schema/data/jpa" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context"
    xmlns:cache="http://www.springframework.org/schema/cache"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd
    http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc.xsd
    http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
    http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache.xsd">

    <context:component-scan base-package="net.isban" />
    <tx:annotation-driven />
    <jpa:repositories base-package="net.isban.fmis.repository" />

    <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="location" value="classpath:fmis-test.properties" />
    </bean>

    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="org.h2.Driver" />
        <property name="url" value="jdbc:h2:mem:test;DB_CLOSE_DELAY=-1" />
        <property name="username" value="sa" />
        <property name="password" value="" />
    </bean>

    <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <property name="packagesToScan" value="net.isban.fmis.entity" />
        <property name="jpaVendorAdapter">
            <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter" />
        </property>
        <property name="jpaProperties">
            <props>
                <prop key="hibernate.hbm2ddl.auto">create</prop>
                <prop key="hibernate.dialect">org.hibernate.dialect.H2Dialect</prop>
            </props>
        </property>
    </bean>

    <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
        <property name="entityManagerFactory" ref="entityManagerFactory" />
    </bean>

    <cache:annotation-driven />
    <bean id="cacheManager" class="org.springframework.cache.ehcache.EhCacheCacheManager">
        <property name="cacheManager" ref="ehcache" />
    </bean>
    <bean id="ehcache" class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean">
        <property name="configLocation" value="classpath:ehcache-test.xml" />
    </bean>

</beans>

希望這可以幫助。