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POHow to test a DAO with JPA implementation?
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copied!<p>I came from the Spring camp , I don't want to use Spring , and am migrating to JavaEE6 , But I have problem testing DAO + JPA , here is my simplified sample :</p> <pre><code>public interface PersonDao { public Person get(long id); } </code></pre> <p>This is a very basic DAO , because I came from Spring , I believe DAO still has its value , so I decided to add a DAO layer .</p> <pre><code>public class PersonDaoImpl implements PersonDao , Serializable { @PersistenceContext(unitName = "test", type = PersistenceContextType.EXTENDED) EntityManager entityManager ; public PersonDaoImpl() { } @Override public Person get(long id) { return entityManager .find(Person.class , id); } } </code></pre> <p>This is a JPA-implemented DAO , I hope the EE container or the test container able to inject the EntityManager (just like Spring does).</p> <pre><code>public class PersonDaoImplTest extends TestCase { @Inject protected PersonDao personDao; @Override protected void setUp() throws Exception { //personDao = new PersonDaoImpl(); } public void testGet() { System.out.println("personDao = " + personDao); // NULL ! Person p = personDao.get(1L); System.out.println("p = " + p); } } </code></pre> <p>This is my test file .</p> <p>OK , here comes the problem : Because JUnit doesn't understand @javax.inject.Inject , the PersonDao will not be able to injected , the test will fail. </p> <p>How do I find a test framework that able to inject the EntityManager to the PersonDaoImpl , and @Inject the PersonDaoImpl to the PersonDao of TestCase ? </p> <p>I tried unitils.org , but cannot find a sample like this , it just directly inject the EntityManagerFactory to the TestCast , not what I want ...</p>

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