@Test
    public void testFindDetachMergeDetachAfterUpdate_assertUpdatePersisted() throws Exception {
        String newName = Long.toString(new Random().nextLong());

        entityManager.getTransaction().begin();
        TestModel updateObj = entityManager.find(TestModel.class, testObjectId);
        updateObj.setName(newName);
        entityManager.merge(updateObj);

        TestModel foundModel = entityManager.find(TestModel.class, testObjectId);
        entityManager.detach(foundModel);
        entityManager.merge(foundModel);
        entityManager.detach(foundModel);
        entityManager.getTransaction().commit();

        Assert.assertEquals(newName, entityManager.find(TestModel.class, testObjectId).getName());
    }