@Test
 @Use(
     field = "booleanValue",
     booleans = {false, true})
 public void testShowWeekDaysBar() {
   calendarAttributes.set(CalendarAttributes.showWeekDaysBar, booleanValue);
   DayPicker proxiedDayPicker = calendar.openPopup().getProxiedDayPicker();
   if (booleanValue) {
     assertVisible(proxiedDayPicker.getWeekDaysBarElement());
   } else {
     assertNotVisible(proxiedDayPicker.getWeekDaysBarElement());
   }
 }