@Test
public void testPrepareToExpireStorageUnit()
{

    // Create a business object data key.
    BusinessObjectDataKey businessObjectDataKey =
        new BusinessObjectDataKey(BDEF_NAMESPACE, BDEF_NAME, FORMAT_USAGE_CODE, FORMAT_FILE_TYPE_CODE, FORMAT_VERSION, PARTITION_VALUE, SUBPARTITION_VALUES,
            DATA_VERSION);
    // Create a storage unit key.
    BusinessObjectDataStorageUnitKey storageUnitKey =
        new BusinessObjectDataStorageUnitKey(BDEF_NAMESPACE, BDEF_NAME, FORMAT_USAGE_CODE, FORMAT_FILE_TYPE_CODE, FORMAT_VERSION, PARTITION_VALUE,
            SUBPARTITION_VALUES, DATA_VERSION, STORAGE_NAME);
    // Create a storage entity.
    StorageEntity storageEntity = new StorageEntity();
    storageEntity.setName(STORAGE_NAME);
    // Create a business object format entity.
    BusinessObjectFormatEntity businessObjectFormatEntity = new BusinessObjectFormatEntity();
    // Create a business object data entity.
    BusinessObjectDataEntity businessObjectDataEntity = new BusinessObjectDataEntity();
    businessObjectDataEntity.setBusinessObjectFormat(businessObjectFormatEntity);
    // Create a new storage unit status entity.
    StorageUnitStatusEntity newStorageUnitStatusEntity = new StorageUnitStatusEntity();
    newStorageUnitStatusEntity.setCode(StorageUnitStatusEntity.EXPIRING);
    // Create an old storage unit status entity.
    StorageUnitStatusEntity oldStorageUnitStatusEntity = new StorageUnitStatusEntity();
    oldStorageUnitStatusEntity.setCode(StorageUnitStatusEntity.RESTORED);
    // Create a list of storage file entities.
    List<StorageFileEntity> storageFileEntities = Arrays.asList(new StorageFileEntity());
    // Create a storage unit entity.
    StorageUnitEntity storageUnitEntity = new StorageUnitEntity();
    storageUnitEntity.setStorage(storageEntity);
    storageUnitEntity.setBusinessObjectData(businessObjectDataEntity);
    storageUnitEntity.setStatus(oldStorageUnitStatusEntity);
    storageUnitEntity.setStorageFiles(storageFileEntities);
    // Create a list of storage files.
    List<StorageFile> storageFiles = Arrays.asList(new StorageFile(S3_KEY, FILE_SIZE, ROW_COUNT));
    // Mock the external calls.
    when(businessObjectDataHelper.createBusinessObjectDataKeyFromStorageUnitKey(storageUnitKey)).thenReturn(businessObjectDataKey);
    when(businessObjectDataDaoHelper.getBusinessObjectDataEntity(businessObjectDataKey)).thenReturn(businessObjectDataEntity);
    when(storageUnitDaoHelper.getStorageUnitEntity(STORAGE_NAME, businessObjectDataEntity)).thenReturn(storageUnitEntity);
    when(configurationHelper.getProperty(ConfigurationValue.S3_ATTRIBUTE_NAME_BUCKET_NAME)).thenReturn(S3_ATTRIBUTE_NAME_BUCKET_NAME);
    when(storageHelper.getStorageAttributeValueByName(S3_ATTRIBUTE_NAME_BUCKET_NAME, storageEntity, true)).thenReturn(S3_BUCKET_NAME);
    when(s3KeyPrefixHelper.buildS3KeyPrefix(storageEntity, businessObjectFormatEntity, businessObjectDataKey)).thenReturn(S3_KEY_PREFIX);
    when(storageFileHelper.getAndValidateStorageFiles(storageUnitEntity, S3_KEY_PREFIX, STORAGE_NAME, businessObjectDataKey)).thenReturn(storageFiles);
    doAnswer(new Answer<Void>()
    {
        public Void answer(InvocationOnMock invocation)
        {
            // Get the storage unit entity.
            StorageUnitEntity storageUnitEntity = (StorageUnitEntity) invocation.getArguments()[0];
            // Update the storage unit status.
            storageUnitEntity.setStatus(newStorageUnitStatusEntity);
            return null;
        }
    }).when(storageUnitDaoHelper).updateStorageUnitStatus(storageUnitEntity, StorageUnitStatusEntity.EXPIRING, StorageUnitStatusEntity.EXPIRING);
    when(configurationHelper.getProperty(ConfigurationValue.S3_ENDPOINT)).thenReturn(S3_ENDPOINT);
    // Call the method under test.
    BusinessObjectDataRestoreDto result = expireRestoredBusinessObjectDataHelperServiceImpl.prepareToExpireStorageUnit(storageUnitKey);
    // Verify the external calls.
    verify(businessObjectDataHelper).createBusinessObjectDataKeyFromStorageUnitKey(storageUnitKey);
    verify(businessObjectDataDaoHelper).getBusinessObjectDataEntity(businessObjectDataKey);
    verify(storageUnitDaoHelper).getStorageUnitEntity(STORAGE_NAME, businessObjectDataEntity);
    verify(configurationHelper).getProperty(ConfigurationValue.S3_ATTRIBUTE_NAME_BUCKET_NAME);
    verify(storageHelper).getStorageAttributeValueByName(S3_ATTRIBUTE_NAME_BUCKET_NAME, storageEntity, true);
    verify(s3KeyPrefixHelper).buildS3KeyPrefix(storageEntity, businessObjectFormatEntity, businessObjectDataKey);
    verify(storageFileHelper).getAndValidateStorageFiles(storageUnitEntity, S3_KEY_PREFIX, STORAGE_NAME, businessObjectDataKey);
    verify(storageUnitDaoHelper)
        .validateNoExplicitlyRegisteredSubPartitionInStorageForBusinessObjectData(storageEntity, businessObjectFormatEntity, businessObjectDataKey,
            S3_KEY_PREFIX);
    verify(storageUnitDaoHelper).updateStorageUnitStatus(storageUnitEntity, StorageUnitStatusEntity.EXPIRING, StorageUnitStatusEntity.EXPIRING);
    verify(configurationHelper).getProperty(ConfigurationValue.S3_ENDPOINT);
    verifyNoMoreInteractionsHelper();
    // Validate the result.
    assertEquals(
        new BusinessObjectDataRestoreDto(businessObjectDataKey, STORAGE_NAME, S3_ENDPOINT, S3_BUCKET_NAME, S3_KEY_PREFIX, StorageUnitStatusEntity.EXPIRING,
            StorageUnitStatusEntity.RESTORED, storageFiles, NO_EXCEPTION, null), result);
}