public void testEmptyConstructorInitialization() {
Calendar calendar = new Calendar();
// The calendar should have a basic event provider with no events
CalendarEventProvider provider = calendar.getEventProvider();
assertNotNull("Event provider should not be null", provider);
// Basic event handlers should be registered
assertNotNull(calendar.getHandler(BackwardEvent.EVENT_ID));
assertNotNull(calendar.getHandler(ForwardEvent.EVENT_ID));