### Question:
RackDAO extends DefaultDAOBase<Integer, Rack> { public boolean existsAnyOtherWithDatacenterAndName(final Rack rack, final String name) { assert rack != null; assert !StringUtils.isEmpty(name); return existsAnyOtherByCriterions(rack, sameDatacenter(rack.getDatacenter()), equalName(name)); } RackDAO();  RackDAO(final EntityManager entityManager); List<Rack> findRacks(final Datacenter datacenter); List<Rack> findRacks(final Datacenter datacenter, final String filter); List<Rack> findRacksWithHAEnabled(final Datacenter datacenter); boolean existsAnyWithDatacenterAndName(final Datacenter datacenter, final String name); boolean existsAnyOtherWithDatacenterAndName(final Rack rack, final String name); List<Integer> getRackIdByMinVLANCount(final int idDatacenter); Long getNumberOfDeployedVlanNetworks(final Integer rackId); Rack findByIds(final Integer datacenterId, final Integer rackId); List<Rack> findAllNotManagedRacksByDatacenter(final Integer datacenterId); List<Rack> findAllNotManagedRacksByDatacenter(final Integer datacenterId,
        final String filter); @SuppressWarnings("unchecked") List<Integer> findUsedVrdpPorts(final Rack rack); Integer getEmptyOffMachines(final Integer rackId); Integer getEmptyOnMachines(final Integer rackId); List<Machine> getRandomMachinesToStartFromRack(final Integer rackId,
        final Integer howMany); List<Machine> getRandomMachinesToShutDownFromRack(final Integer rackId,
        final Integer howMany); List<Machine> getAllMachinesToShutDownFromRack(final Integer rackId);  }### Answer:
@Test public void test_existsAnyOtherWithDatacenterAndName() { Datacenter datacenter1 = datacenterGenerator.createUniqueInstance(); Datacenter datacenter2 = datacenterGenerator.createUniqueInstance(); Rack rack1_1 = datacenter1.createRack("Rack 1", 2, 4094, 2, 10); Rack rack2_1 = datacenter2.createRack("Rack 1", 2, 4094, 2, 10); Rack rack2_2 = datacenter2.createRack("Rack 2", 2, 4094, 2, 10); ds().persistAll(datacenter1, datacenter2, rack1_1, rack2_1, rack2_2); Assert.assertFalse(createDaoForRollbackTransaction().existsAnyOtherWithDatacenterAndName( rack1_1, "Rack 1")); Assert.assertFalse(createDaoForRollbackTransaction().existsAnyOtherWithDatacenterAndName( rack1_1, "Rack 2")); Assert.assertFalse(createDaoForRollbackTransaction().existsAnyOtherWithDatacenterAndName( rack1_1, "Rack 3")); Assert.assertFalse(createDaoForRollbackTransaction().existsAnyOtherWithDatacenterAndName( rack2_1, "Rack 1")); Assert.assertTrue(createDaoForRollbackTransaction().existsAnyOtherWithDatacenterAndName( rack2_1, "Rack 2")); Assert.assertFalse(createDaoForRollbackTransaction().existsAnyOtherWithDatacenterAndName( rack2_1, "Rack 3")); Assert.assertTrue(createDaoForRollbackTransaction().existsAnyOtherWithDatacenterAndName( rack2_2, "Rack 1")); Assert.assertFalse(createDaoForRollbackTransaction().existsAnyOtherWithDatacenterAndName( rack2_2, "Rack 2")); Assert.assertFalse(createDaoForRollbackTransaction().existsAnyOtherWithDatacenterAndName( rack2_2, "Rack 3")); }