### Question:
WebHookHistoryRepositoryImpl implements WebHookHistoryRepository { @Override public int getTotalStoreItems() { synchronized (webHookHistoryItems) { return webHookHistoryItems.size(); } }  @Override void addHistoryItem(WebHookHistoryItem histoyItem); @Override WebHookHistoryItem getHistoryItem(String trackingId); @Override PagedList<WebHookHistoryItem> findHistoryItemsForProject(String projectId, int pageNumber, int pageSize); @Override PagedList<WebHookHistoryItem> findHistoryItemsForBuildType(String buildTypeId, int pageNumber, int pageSize); @Override PagedList<WebHookHistoryItem> findHistoryItemsForBuild(Long buildId, int pageNumber, int pageSize); @Override PagedList<WebHookHistoryItem> findHistoryItemsForWebHookConfigId(String webHookId, int pageNumber, int pageSize); @Override Map<String, Integer> findHistoryItemCountsForWebHookConfigId(String webhookId); @Override PagedList<WebHookHistoryItem> findHistoryErroredItems(int pageNumber, int pageSize); @Override PagedList<WebHookHistoryItem> findHistoryDisabledItems(int pageNumber, int pageSize); @Override PagedList<WebHookHistoryItem> findHistoryOkItems(int pageNumber, int pageSize); @Override PagedList<WebHookHistoryItem> findHistoryAllItems(int pageNumber, int pageSize); @Override Map<LocalDate, List<WebHookHistoryItem>> findHistoryDisabledItemsGroupedByDay(LocalDate untilDate, int numberOfDays); @Override Map<LocalDate, List<WebHookHistoryItem>> findHistoryErroredItemsGroupedByDay(LocalDate untilDate, int numberOfDays); @Override Map<LocalDate, List<WebHookHistoryItem>> findHistoryOkItemsGroupedByDay(LocalDate untilDate, int numberOfDays); @Override Map<LocalDate, List<WebHookHistoryItem>> findHistoryAllItemsGroupedByDay(LocalDate untilDate, int numberOfDays); @Override int getTotalCount(); @Override int getDisabledCount(); @Override int getErroredCount(); @Override int getOkCount(); @Override int getTotalStoreItems();  }### Answer:
@Test public void putManyItemsInAsync() { MockitoAnnotations.initMocks(this); WebHookHistoryRepository historyRepository = mockSBuilds(); populateHistoryStore(historyRepository); assertEquals(10000, historyRepository.getTotalStoreItems()); }