### Question:
DNDListComponent { int getItemHeight() { return DEFAULT_ITEM_HEIGHT; } @Inject  DNDListComponent(final View view,
                            final DataTypeList dataTypeList); void refreshItemsPosition(); void refreshItemsCSSAndHTMLPosition(); HTMLElement registerNewItem(final HTMLElement htmlElement); HTMLElement getElement(); HTMLElement getDragArea(); void consolidateYPosition(); Optional<HTMLElement> getPreviousElement(final Element reference); void clear(); void setPositionX(final Element element,
                             final double positionX); void setPositionY(final Element element,
                             final double positionY); int getPositionY(final Element element); void setOnDropItem(final BiConsumer<Element, Element> onDropItem); void refreshDragAreaSize(); void setInitialPositionY(final HTMLElement dragAndDropElement,
                                    final List<HTMLElement> children); void setInitialHiddenPositionY(final HTMLElement itemElement); void highlightLevel(final HTMLElement htmlElement);  }### Answer:
@Test public void testGetItemHeight() { assertEquals(DEFAULT_ITEM_HEIGHT, dndListComponent.getItemHeight()); }