@Test
ublic void testDayGridPositionAtLocationLastColumnRToL() {

   // This test will not work in a headless configuration.
   if (GraphicsEnvironment.isHeadless()) {
       LOG.fine("cannot run test - headless environment");
       return;
   }
   BasicMonthViewUI ui = getRealizedMonthViewUI(ComponentOrientation.RIGHT_TO_LEFT);
   Point location = getLocationInColumn(ui, 0);
   Point dayGridPosition = ui.getDayGridPositionAtLocation(location.x, location.y); 
   assertEquals("last logical column in RToL", BasicMonthViewUI.LAST_DAY_COLUMN, 
           dayGridPosition.x);
}