/** | |
* Copyright (C) 2010 Google, Inc. | |
* | |
* Licensed under the Apache License, Version 2.0 (the "License"); | |
* you may not use this file except in compliance with the License. | |
* You may obtain a copy of the License at | |
* | |
* http://www.apache.org/licenses/LICENSE-2.0 | |
* | |
* Unless required by applicable law or agreed to in writing, software | |
* distributed under the License is distributed on an "AS IS" BASIS, | |
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
* See the License for the specific language governing permissions and | |
* limitations under the License. | |
*/ | |
package com.google.inject.persist.jpa; | |
import com.google.inject.Guice; | |
import com.google.inject.Inject; | |
import com.google.inject.Injector; | |
import com.google.inject.persist.PersistService; | |
import com.google.inject.persist.Transactional; | |
import com.google.inject.persist.UnitOfWork; | |
import javax.persistence.EntityManager; | |
import javax.persistence.EntityManagerFactory; | |
import junit.framework.TestCase; | |
/** | |
* A test around providing sessions (starting, closing etc.) | |
* | |
* @author Dhanji R. Prasanna (dhanji@gmail.com) | |
*/ | |
public class EntityManagerPerRequestProvisionTest extends TestCase { | |
private Injector injector; | |
@Override | |
public void setUp() { | |
injector = Guice.createInjector(new JpaPersistModule("testUnit")); | |
//startup persistence | |
injector.getInstance(PersistService.class).start(); | |
injector.getInstance(UnitOfWork.class).begin(); | |
} | |
@Override | |
public final void tearDown() { | |
injector.getInstance(UnitOfWork.class).end(); | |
injector.getInstance(EntityManagerFactory.class).close(); | |
} | |
public void testEntityManagerLifecyclePerTxn() { | |
//obtain em | |
JpaDao dao = injector.getInstance(JpaDao.class); | |
//obtain same em again (bound to txn) | |
JpaTestEntity te = new JpaTestEntity(); | |
dao.persist(te); | |
//im not sure this hack works... | |
assertEquals("Entity managers closed inside same thread-scope", | |
injector.getInstance(EntityManager.class), JpaDao.em); | |
//try to start a new em in a new txn | |
dao = injector.getInstance(JpaDao.class); | |
assertTrue("EntityManager was closed and reopened around txn" | |
+ " (persistent object does not persist)", dao.contains(te)); | |
} | |
public void testEntityManagerLifecyclePerTxn2() { | |
//obtain em | |
JpaDao dao = injector.getInstance(JpaDao.class); | |
//obtain same em again (bound to txn) | |
JpaTestEntity te = new JpaTestEntity(); | |
dao.persist(te); | |
//im not sure this hack works... | |
assertEquals("Duplicate entity managers crossing-scope", | |
injector.getInstance(EntityManager.class), JpaDao.em); | |
assertEquals("Duplicate entity managers crossing-scope", | |
injector.getInstance(EntityManager.class), JpaDao.em); | |
//try to start a new em in a new txn | |
dao = injector.getInstance(JpaDao.class); | |
assertTrue("EntityManager was closed and reopened around txn" | |
+ " (persistent object doesnt persist)", dao.contains(te)); | |
} | |
public static class JpaDao { | |
static EntityManager em; | |
@Inject | |
public JpaDao(EntityManager em) { | |
JpaDao.em = em; | |
} | |
@Transactional | |
public <T> void persist(T t) { | |
assertTrue("em is not open!", em.isOpen()); | |
assertTrue("no active txn!", em.getTransaction().isActive()); | |
em.persist(t); | |
assertTrue("Persisting object failed", em.contains(t)); | |
} | |
@Transactional | |
public <T> boolean contains(T t) { | |
return em.contains(t); | |
} | |
} | |
} |