@Test
 @Use(
     field = "booleanValue",
     booleans = {false, true})
 public void testShowWeeksBar() {
   calendarAttributes.set(CalendarAttributes.showWeeksBar, booleanValue);
   DayPicker proxiedDayPicker = calendar.openPopup().getProxiedDayPicker();
   if (booleanValue) {
     assertVisible(proxiedDayPicker.getWeek(1).getWeekNumberElement());
   } else {
     assertNotVisible(proxiedDayPicker.getWeek(1).getWeekNumberElement());
   }
 }