1 /* 2 * Copyright (C) 2010 Google, Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.google.inject.persist.jpa; 18 19 import com.google.inject.Guice; 20 import com.google.inject.Inject; 21 import com.google.inject.Injector; 22 import com.google.inject.Provider; 23 import com.google.inject.persist.PersistService; 24 import com.google.inject.persist.Transactional; 25 import javax.persistence.EntityManager; 26 import javax.persistence.EntityManagerFactory; 27 import junit.framework.TestCase; 28 29 /** 30 * A test around providing sessions (starting, closing etc.) 31 * 32 * @author Dhanji R. Prasanna (dhanji@gmail.com) 33 */ 34 35 public class EntityManagerProvisionTest extends TestCase { 36 private Injector injector; 37 38 @Override setUp()39 public void setUp() { 40 injector = Guice.createInjector(new JpaPersistModule("testUnit")); 41 42 //startup persistence 43 injector.getInstance(PersistService.class).start(); 44 } 45 46 @Override tearDown()47 public final void tearDown() { 48 injector.getInstance(EntityManagerFactory.class).close(); 49 } 50 testEntityManagerLifecyclePerTxn()51 public void testEntityManagerLifecyclePerTxn() { 52 //obtain em 53 JpaDao dao = injector.getInstance(JpaDao.class); 54 55 //obtain same em again (bound to txn) 56 JpaTestEntity te = new JpaTestEntity(); 57 58 dao.persist(te); 59 60 //im not sure this hack works... 61 assertFalse( 62 "Duplicate entity managers crossing-scope", 63 dao.lastEm.equals(injector.getInstance(EntityManager.class))); 64 65 //try to start a new em in a new txn 66 dao = injector.getInstance(JpaDao.class); 67 68 assertFalse( 69 "EntityManager wasnt closed and reopened properly around txn" 70 + " (persistent object persists)", 71 dao.contains(te)); 72 } 73 testEntityManagerLifecyclePerTxn2()74 public void testEntityManagerLifecyclePerTxn2() { 75 //obtain em 76 JpaDao dao = injector.getInstance(JpaDao.class); 77 78 //obtain same em again (bound to txn) 79 JpaTestEntity te = new JpaTestEntity(); 80 81 dao.persist(te); 82 83 //im not sure this hack works... 84 assertFalse( 85 "Duplicate entity managers crossing-scope", 86 dao.lastEm.equals(injector.getInstance(EntityManager.class))); 87 88 //try to start a new em in a new txn 89 dao = injector.getInstance(JpaDao.class); 90 91 assertFalse( 92 "EntityManager wasnt closed and reopened properly around txn" 93 + " (persistent object persists)", 94 dao.contains(te)); 95 } 96 97 public static class JpaDao { 98 private final Provider<EntityManager> em; 99 EntityManager lastEm; 100 101 @Inject JpaDao(Provider<EntityManager> em)102 public JpaDao(Provider<EntityManager> em) { 103 this.em = em; 104 } 105 106 @Transactional persist(T t)107 public <T> void persist(T t) { 108 lastEm = em.get(); 109 assertTrue("em is not open!", lastEm.isOpen()); 110 assertTrue("no active txn!", lastEm.getTransaction().isActive()); 111 lastEm.persist(t); 112 113 assertTrue("Persisting object failed", lastEm.contains(t)); 114 } 115 116 @Transactional contains(T t)117 public <T> boolean contains(T t) { 118 if (null == lastEm) { 119 lastEm = em.get(); 120 } 121 return lastEm.contains(t); 122 } 123 } 124 } 125