How to use JUnit and EJB3

[Georg Joo]

Hi

I want to test my EJB3 with JUnit. But I get allways following error :

  javax.persistence.PersistenceException: No Persistence provider for EntityManager named mainService
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:41)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:27)
at at.joo.ejb.session.main.TestCaseESLoginBean.setUp(TestCaseESLoginBean.java:29)
at junit.framework.TestCase.runBare(TestCase.java:125)
  

The setup methode looks like :

   protected void setUp() throws Exception {
    super.setUp();
    
    emf = Persistence.createEntityManagerFactory("mainService");
    em = emf.createEntityManager();
    ....
    }
   

My persistence.xml :

  <?xml version="1.0" encoding="UTF-8"?> 
<persistence xmlns="http://java.sun.com/xml/ns/persistence" version="1.0"> 
 
    <persistence-unit name ="mainService" transaction-type="RESOURCE_LOCAL" > 
<class>at.joo.ejb.session.main.ESLoginBean</class>
           <properties>
<property name="jdbc.driver"     value="org.gjt.mm.mysql.Driver"/>
<property name="jdbc.connection.string"
value="jdbc:mysql://localhost:3306/test"/>
<property name="jdbc.user" value="root"/>
<property name="jdbc.password" value=""/>
      </properties>
    </persistence-unit> 
</persistence>
  

What can I do ? Where is the right place for the persistence.xml file ?

[Jaikiran Pai]

I havent worked with EJB3 much, but EJBs are server side components and they cannot be tested with JUnit. You might have to use Cactus instead, which is very similar to JUnit but allows you to test server side components.

[Georg Joo]

Hi

I have the book "Pro EJB 3" of Apress. There is a description to test EJB3 with JUnit. It schoud be possible.

But I will take a look to Cactus.

Thanks
Georg