### Question:
MonacoEditorView implements UberElement<MonacoEditorPresenter> { void loadingStarts() { monacoEditor.getStyle().setProperty(DISPLAY, NONE); loadingEditor.getStyle().removeProperty(DISPLAY); }  @Override void init(final MonacoEditorPresenter presenter); String getValue(); String getLanguage(); void load(String[] modules,
                     MonacoEditorOptions options,
                     Runnable callback); void dispose(); @PreDestroy void destroy(); @Override HTMLElement getElement();  }### Answer:
@Test public void testLoadingStarts() { tested.loadingStarts(); verify(monacoStyle, times(1)).setProperty(eq(MonacoEditorView.DISPLAY), eq(MonacoEditorView.NONE)); verify(monacoStyle, never()).removeProperty(any()); verify(loadingStyle, times(1)).removeProperty(eq(MonacoEditorView.DISPLAY)); verify(loadingStyle, never()).setProperty(any(), any()); }