hi all,
i have been attempting to convert my existing JPA code over to GAE.
All is working so far except for the unit tests.
i read
code.google.com/appengine/docs/java/tools/localunittesting.html
but it doesnt describe how to get an entityManager involved in usefull
unit tests.
so this is my test. please advise how to achieve the functionality in
this test.
@Test
public void findFriendsSimple() {
PositionUser user1 = new PositionUser();
user1.setFirstName("john");
user1.setLastName("smith");
PositionUser user2 = new PositionUser();
user2.setFirstName("mary");
user2.setLastName("smith");
PositionUser user3 = new PositionUser();
user3.setFirstName("barney");
user3.setLastName("smith");
em.persist(user2);
em.persist(user3);
//em.flush(); <--- can use flush for non transaction test
user1.getFriends().add(user2.getKey());
user1.getFriends().add(user3.getKey());
em.persist(user1);
//em.flush(); <--- can use flush for non transaction test
Query query = em.createNamedQuery(PositionUser.FIND_FRIENDS);
query.setParameter("userKey", user1.getKey());
List resultList = query.getResultList();
assertEquals( 2, resultList.size() );
}
the assert is triggered
java.lang.AssertionError: expected:<2> but was:<0>
this is because the entitymanager wont detect the persisted entities
that arent in a transaction.
ok no problem, i will add transactions.
But when i do it complains that i am adding multiple groups in a single
transaction.
So besides the simple gae sample unit test, how are others writting
useful unit tests in gae?
any help is most appreciated
-lp
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