anchor.diff:        expect(node.descendants, isEmpty);
         expect(node.text, 'html [<!-- internal subset -->]');
         expect(node.nodeType, XmlNodeType.DOCUMENT_TYPE);
  +      expect(node.nodeType.toString(), 'XmlNodeType.DOCUMENT_TYPE');
         expect(node.toString(), '<!DOCTYPE html [<!-- internal subset -->]>');
       });
     });
  
positive.code:           '</schema>';
        expect(actual, expected);
      });
      test('invalid namespace', () {
        var builder = new XmlBuilder();
        builder.element('element', nest: () {
  
negative.code:       expect(node.descendants, hasLength(1));
        expect(node.text, 'Am I or are the other crazy?');
        expect(node.nodeType, XmlNodeType.ELEMENT);
        expect(node.nodeType.toString(), 'XmlNodeType.ELEMENT');
        expect(node.toString(), '<ns:data>Am I or are the other crazy?</ns:data>');
      });
      test('attribute', () {
  