### Question:
Styles { public static Styles none () { return _noneSingleton; } private  Styles(Binding<?>[] bindings); static Styles none(); static Styles make(Style.Binding<?>... bindings); static V resolveStyle(Element<?> element, Style<V> style); Styles add(Style.Binding<?>... bindings); Styles addDisabled(Style.Binding<?>... bindings); Styles addSelected(Style.Binding<?>... bindings); Styles addDisabledSelected(Style.Binding<?>... bindings); Styles add(Style.Mode mode, Style.Binding<?>... bindings); Styles clear(Style.Mode mode, Style<V> style); Styles merge(Styles styles);  }### Answer:
@Test public void testEmpty () { Styles s = Styles.none(); checkIsNull(s, Style.COLOR); }