### Question:
DataTypeList { public void showListItems() { view.showOrHideNoCustomItemsMessage(); } @Inject  DataTypeList(final View view,
                        final ManagedInstance<DataTypeListItem> listItems,
                        final DataTypeManager dataTypeManager,
                        final DataTypeSearchBar searchBar,
                        final DNDListComponent dndListComponent,
                        final DataTypeStackHash dataTypeStackHash,
                        final DNDDataTypesHandler dndDataTypesHandler,
                        final DataTypeListHighlightHelper highlightHelper,
                        final IsKogito isKogito); HTMLElement getElement(); void setupItems(final List<DataType> dataTypes); Optional<DataTypeListItem> findItem(final DataType dataType); DNDListComponent getDNDListComponent(); List<DataTypeListItem> getItems(); void showNoDataTypesFound(); void showListItems(); void collapseAll(); void enableEditMode(final String dataTypeHash); void registerDataTypeListItemUpdateCallback(final Consumer<DataTypeListItem> onDataTypeListItemUpdate); Optional<DataTypeListItem> findItemByDataTypeHash(final String dataTypeHash); String calculateHash(final DataType dataType); void onDataTypeEditModeToggle(final @Observes DataTypeEditModeToggleEvent event); HTMLElement getListItems(); void importDataObjects(final List<DataObject> selectedDataObjects); void disableEditModeForChildren(final DataTypeListItem dataTypeListItem); List<String> getExistingDataTypesNames(); void highlightLevel(final DataType dataType); void highlightLevel(final Element element); void highlight(final Element element); void cleanLevelHighlightClass(); void cleanHighlightClass();  }### Answer:
@Test public void testShowListItems() { dataTypeList.showListItems(); verify(view).showOrHideNoCustomItemsMessage(); }