### Question:
DNDListDOMHelper { static HTMLElement asHover(final HTMLElement element) { element.classList.add(HOVER); return element; }   static final String DRAGGING; }### Answer:
@Test public void testAsHover() { element.classList = mock(DOMTokenList.class); final HTMLElement actual = asHover(element); final HTMLElement expected = element; verify(element.classList).add(HOVER); assertEquals(expected, actual); }