JAX-RS webservice testcase Injection of EntityManager sets NULL object in TestClass - unit-testing

Question

I am beginner with JAX-RS webservice and its testcase.
My TestController class is as follows:
public class LotTypeMangementServiceTest {
private final String LOT_NAME = "lotName";
#Inject
private LotTypeManagementService lotTypeService;
#Test
private LotType testCreate() {
LotType newLotType = new LotType();
newLotType.setName(LOT_NAME);
//save
lotTypeService.createOrUpdate(newLotType);
Assert.assertNotNull(newLotType.getId());
return newLotType;
}
}
My LotTypeManagementService as follows:
#Stateless
public class LotTypeManagementService {
#PersistenceContext(unitName="primary")
private EntityManager em;
public void createOrUpdate(LotType lotType) {
if (lotType.getId() == null) { // Save New Label Type
em.persist(lotType);
} else { // Update Label Type
em.merge(lotType);
}
}
}
Now as you can see, LotTypeManagementService has EntityManager dependency.
In testclass, I've injected LotTypeManagementService. However, its dependency is not getting injected and hence I em object is NULL.
My persistence.xml file is as below:
<persistence version="2.0"
xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://java.sun.com/xml/ns/persistence
http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
<persistence-unit name="primary">
<jta-data-source>java:jboss/datasources/lottype</jta-data-source>
<properties>
<property name="hibernate.hbm2ddl.auto" value="update" />
<property name="hibernate.show_sql" value="true" />
</properties>
</persistence-unit>
</persistence>
My RestController is as below:
#RequestScoped
public class LotTypeResourceRESTService {
#Inject
private LotTypeManagementService lotTypeService;
}
I am using wildfly-9.0.1 server, java8, JAX-RS webservice, hibernate, jpa-2.1 and jUnit.
I found some solution on Stack Overflow like
Use #Inject or #Ejb
some change on persistance.xml <provider>org.hibernate.ejb.HibernatePersistence</provider>
em = (EntityManager) new nitialContext().lookup("java:/primary");
Like create dynamically container.
How can I do this correctly?