hibernate - database not updated using JPA and spring when new entries are made -

i configuring simple jpa application using spring framework. goal populate db data during junit test runs. understand not ideal. want different purposes.

here persistence.xml

<persistence xmlns="http://java.sun.com/xml/ns/persistence"     version="1.0">     <persistence-unit name="tothought-tutorial-test" transaction-type="resource_local">         <provider>org.hibernate.ejb.hibernatepersistence</provider>         <properties>         <!--    <property name="hibernate.dialect" value="org.hibernate.dialect.h2dialect" />         <property name="hibernate.hbm2ddl.auto" value="create-drop" /> -->             <property name="hibernate.dialect" value="org.hibernate.dialect.mysql5dialect" />             <property name="hibernate.hbm2ddl.auto" value="update" />             <property name="hibernate.show_sql" value="true"/>         </properties>     </persistence-unit> </persistence> 

test-context.xml

<?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"     xsi:schemalocation="http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.1.xsd         http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd         http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.2.xsd">      <!-- database -->     <!--  <jdbc:embedded-database id="datasource" type="h2"></jdbc:embedded-database> -->      <bean id="datasource" class="org.springframework.jdbc.datasource.drivermanagerdatasource">         <property name="driverclassname" value="com.mysql.jdbc.driver" />         <property name="url" value="jdbc:mysql://localhost:3306/to_thought_tutorial" />         <property name="username" value="demo" />         <property name="password" value="demo" />     </bean>      <!-- entity manager -->     <bean id="entitymanagerfactory"         class="org.springframework.orm.jpa.localcontainerentitymanagerfactorybean">         <property name="datasource" ref="datasource" />         <property name="persistenceunitname" value="tothought-tutorial-test" />     </bean>      <!-- transaction manager -->     <bean id="transactionmanager" class="org.springframework.orm.jpa.jpatransactionmanager">         <property name="entitymanagerfactory" ref="entitymanagerfactory" />     </bean>      <!-- jpa repositories -->     <jpa:repositories base-package="com.cloudfoundry.tothought.repositories"></jpa:repositories> </beans> 

here junittest class

@runwith(springjunit4classrunner.class) @contextconfiguration(locations="classpath:meta-inf/test-context.xml") @transactional public class postpartrepositorytest {      @autowired     postpartrepository repository;      @test     public void test() {         postpart postpart = new postpart();         string body = "hello";         postpart.setbody(body);          repository.save(postpart);          postpart dbpostpart = repository.findone(postpart.getpostpartid());         assertnotnull(dbpostpart);         assertequals(body, dbpostpart.getbody());     }      @test     public void inserttest(){          post post = new post();         post.setpostdate(new date());         post.settitle("first post");          postpart postpart = new postpart();         string body = "hello";         postpart.setbody(body);          postpart.setpost(post);          repository.save(postpart);          postpart dbpostpart = repository.findone(postpart.getpostpartid());         assertnotnull(dbpostpart);         assertnotnull(dbpostpart.getpost());         assertequals(body, dbpostpart.getbody());     }  } 

both test passes. not see entry in tables, although tables created first time.

you won't see entries because running test @transactional using springjunit4classrunner. default running tests @transactional database changes automatically rolled once test finished. more information see question here

the order in these things happen follows:

1. test starts, setup scripts run, creates tables.
2. tests start running in transactional context.
3. tests finish running, , database changes made during test, automatically rolled back, leaving database in state in before tests ran.

you can change default behaviour can use @transactionconfiguration(defaultrollback=false) @ top of class. bad practice because unit tests should not depend on each other , shouldn't permanently modifying application state. also, if depending on 1 test set in environment , use in next test, there no guarantee order tests executed test runner.