### Question:
ProcessingJobDaoImpl implements ProcessingJobDao { @Override public com.google.code.morphia.Key<ProcessingJob> createOrModify( ProcessingJob processingJobs, WriteConcern writeConcern) { return datastore.save(processingJobs, writeConcern); } ProcessingJobDaoImpl(Datastore datastore); @Override Long getCount(); @Override boolean create(ProcessingJob processingJob, WriteConcern writeConcern); @Override com.google.code.morphia.Key<ProcessingJob> createOrModify(
			ProcessingJob processingJobs, WriteConcern writeConcern); @Override Iterable<com.google.code.morphia.Key<ProcessingJob>> createOrModify(
			Collection<ProcessingJob> processingJobs, WriteConcern writeConcern); @Override ProcessingJob read(String id); @Override boolean update(ProcessingJob processingJob, WriteConcern writeConcern); @Override WriteResult delete(String id); @Override List<ProcessingJob> getJobsWithState(JobState jobState, Page page); @Override void modifyStateOfJobsWithIds(JobState newJobState,
			final List<String> jobIds); @Override void modifyStateOfJobs(JobState oldJobState, JobState newJobState); Map<String, Integer> getIpDistribution(); @Override List<ProcessingJob> getDiffusedJobsWithState(
			JobPriority jobPriority, JobState jobState, Page page,
			Map<String, Integer> ipDistribution); @Override List<ProcessingJob> deactivateJobs(final ReferenceOwner owner,
			final WriteConcern writeConcern); @Override PagedElements<ProcessingJob> findJobsByCollectionIdAndState(
			final Set<String> collectionIds, final Set<JobState> states,
			final Page pageConfiguration); @Override Map<String, JobStatistics> findJobsByCollectionId(String collectionId);  }### Answer:
@Test public void testCreate_NullCollection() { assertFalse(processingJobDao.createOrModify((Collection)null, WriteConcern.NONE).iterator().hasNext()); }
@Test public void testCreate_EmptyCollection() { assertFalse(processingJobDao.createOrModify(Collections.EMPTY_LIST, WriteConcern.NONE).iterator().hasNext()); }