### Question:
DataTypeSearchBarView implements DataTypeSearchBar.View { void expandListItems(final List<DataTypeListItem> listItems) { for (final DataTypeListItem listItem : listItems) { listItem.expand(); } } @Inject  DataTypeSearchBarView(final HTMLInputElement searchBar,
                                 final @Named("span") HTMLElement searchIcon,
                                 final HTMLButtonElement closeSearch,
                                 final TranslationService translationService); @PostConstruct void setupSearchBar(); @Override void init(final DataTypeSearchBar presenter); @EventHandler("close-search") void onSearchBarCloseButton(final ClickEvent e); @EventHandler("search-bar") void onSearchBarKeyUpEvent(final KeyUpEvent event); @EventHandler("search-bar") void onSearchBarKeyDownEvent(final KeyDownEvent e); @EventHandler("search-bar") void onSearchBarChangeEvent(final ChangeEvent e); @Override void resetSearchBar(); @Override void showSearchResults(final List<DataType> results); void refreshItemsPosition();  }### Answer:
@Test public void testExpandListItems() { final DataTypeListItem item1 = mock(DataTypeListItem.class); final DataTypeListItem item2 = mock(DataTypeListItem.class); final List<DataTypeListItem> list = asList(item1, item2); view.expandListItems(list); verify(item1).expand(); verify(item2).expand(); }