package lhp.example.junit;import static org.junit.Assert.*;
import java.sql.DatabaseMetaData;
import lhp.example.context.ContextHolder;
import lhp.example.context.DBType;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.junit.Before;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;public class ServiceTest {private ApplicationContext context;//三个数据源的URLprivate String dataSource1_URL = "jdbc:mysql://127.0.0.1:3306/dec";private String dataSource2_URL = "jdbc:mysql://127.0.0.1:3306/lms";private String dataSource3_URL = "jdbc:odbc:accessTest";private SessionFactory mysqlSessionFactory;private SessionFactory aceessSessionFactory;@Beforepublic void setUp() throws Exception {// 选择数据源初始化spring
        ContextHolder.setDbType(DBType.dataSource1);//
        String[] xmlFiles = new String[] { "applicationContext-dataSource.xml","applicationContext-hibernate.xml","applicationContext-spring.xml" };//
        context = new ClassPathXmlApplicationContext(xmlFiles);//
        mysqlSessionFactory = (SessionFactory) context.getBean("mysqlSessionFactory");aceessSessionFactory = (SessionFactory) context.getBean("aceessSessionFactory");}@SuppressWarnings("deprecation")@Testpublic void mysqlDataSourceTest() {try {Session mysqlSession = mysqlSessionFactory.openSession();// 获得数据库元数据DatabaseMetaData meatData = mysqlSession.connection().getMetaData();// 默认启动数据源 dataSource1//断言当前数据源URL是否是dataSource1的URL
            assertEquals(dataSource1_URL, meatData.getURL());// 切换到数据源 dataSource2
            ContextHolder.setDbType(DBType.dataSource2);mysqlSession = mysqlSessionFactory.openSession();meatData = mysqlSession.connection().getMetaData();//断言当前数据源URL是否是dataSource2的URL
            assertEquals(dataSource2_URL, meatData.getURL());} catch (Exception e) {e.printStackTrace();}}@SuppressWarnings("deprecation")@Testpublic void accessDataSourceTest() {try {Session accessSession = aceessSessionFactory.openSession();// 获得数据库元数据DatabaseMetaData meatData = accessSession.connection().getMetaData();//断言当前数据源URL是否是dataSource3的URL
            assertEquals(dataSource3_URL, meatData.getURL());} catch (Exception e) {e.printStackTrace();}}}