### Question:
DatacenterDAO extends DefaultDAOBase<Integer, Datacenter> { public boolean existsAnyWithName(final String name) { assert !StringUtils.isEmpty(name); return this.existsAnyByCriterions(equalName(name)); } DatacenterDAO();  DatacenterDAO(final EntityManager entityManager); boolean existsAnyWithName(final String name); boolean existsAnyOtherWithName(final Datacenter datacenter, final String name); DefaultEntityCurrentUsed getCurrentResourcesAllocated(final int datacenterId,
        final int enterpriseId); List<Enterprise> findEnterprisesByDatacenters(final Datacenter datacenter,
        final Integer firstElem, final Integer numElem, final Boolean network); static final String BY_ENT_WITH_NETWORK; static final String BY_ENT; }### Answer:
@Test public void test_existsAnyWithName() { Assert.assertFalse(createDaoForRollbackTransaction().existsAnyWithName("INEXISTENT_NAME")); Datacenter datacenter = createUniqueEntity(); datacenter.setName("A name"); ds().persistAll(datacenter); Assert.assertTrue(createDaoForRollbackTransaction().existsAnyWithName("A name")); }