### Question:
SourceDocumentProcessingStatisticsDaoImpl implements SourceDocumentProcessingStatisticsDao { @Override public com.google.code.morphia.Key<SourceDocumentProcessingStatistics> createOrModify(SourceDocumentProcessingStatistics sourceDocumentProcessingStatistics, WriteConcern writeConcern) { return datastore.save(sourceDocumentProcessingStatistics, writeConcern); } SourceDocumentProcessingStatisticsDaoImpl(Datastore datastore); @Override Long getCount(); @Override boolean create(SourceDocumentProcessingStatistics sourceDocumentProcessingStatistics, WriteConcern writeConcern); @Override SourceDocumentProcessingStatistics read(String id); @Override List<SourceDocumentProcessingStatistics> read(List<String> ids); @Override boolean update(SourceDocumentProcessingStatistics sourceDocumentProcessingStatistics, WriteConcern writeConcern); @Override com.google.code.morphia.Key<SourceDocumentProcessingStatistics> createOrModify(SourceDocumentProcessingStatistics sourceDocumentProcessingStatistics, WriteConcern writeConcern); @Override Iterable<com.google.code.morphia.Key<SourceDocumentProcessingStatistics>> createOrModify(Collection<SourceDocumentProcessingStatistics> sourceDocumentProcessingStatistics,
                                                                                                    WriteConcern writeConcern); @Override WriteResult delete(String id); @Override SourceDocumentProcessingStatistics findBySourceDocumentReferenceAndJobId(String docId, String jobId); @Override List<SourceDocumentProcessingStatistics> findByRecordID(String recordID); @Override Map<ProcessingState, Long> countNumberOfDocumentsWithState(); @Override List<SourceDocumentProcessingStatistics> deactivateDocuments(List<String> sourceDocumentReferenceIds, WriteConcern writeConcern); @Override List<SourceDocumentProcessingStatistics> findByExecutionIdAndState(String executionId, List<ProcessingState> states);  }### Answer:
@Test public void test_CreateOrModify_NullCollection() { assertFalse (sourceDocumentProcessingStatisticsDao.createOrModify((Collection)null, WriteConcern.NONE).iterator().hasNext()); }
@Test public void test_CreateOrModify_EmptyCollection() { assertFalse (sourceDocumentProcessingStatisticsDao.createOrModify(Collections.EMPTY_LIST, WriteConcern.NONE).iterator().hasNext()); }