anchor.diff:        expect(calendar.Year, inInclusiveRange(1721, 1800));
       });
   
  -    test('Calendar clone', () {
  -      final calendar2 = ICalendar(calendar.Clone());
  -
  -      expect(
  -          calendar2.runtimeClassName, equals('Windows.Globalization.Calendar'));
  -      expect(calendar2.Year, equals(calendar.Year));
  -    });
  -
  -    test('Add and delete days', () {
  +    test('Compare equality', () {
         final original = calendar.Clone();
         calendar
           ..AddDays(1)
  
positive.code:       }
      });
  
      test('Calendar month as truncated string', () {
        // Repeat to ensure that this doesn't fail because of some kind of memory
        // issue.
        for (var i = 0; i < 10000; i++) {
  
negative.code:       expect(compare, isZero);
      });
  
      test('Compare positive', () {
        final original = calendar.Clone();
        calendar
          ..AddDays(2)
  