attempt to get safari/ie green

tests/html/node_validator_test.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library validator_test;
 
 import 'dart:async';
 import 'dart:html';
 import 'dart:svg' as svg;
 import 'package:unittest/unittest.dart';
@@ skipping 94 matching lines @@
     testHtml('blocks namespaced common elements',
         validator,
         '<ns:div></ns:div>',
         '');
 
     testHtml('allows CDATA sections',
         validator,
         '<span>![CDATA[ some text ]]></span>');
 
     test('sanitizes template contents', () {
+      if (!TemplateElement.supported) return;
+
       var html = '<template>'
           '<div></div>'
           '<script></script>'
           '<img src="http://example.com/foo"/>'
         '</template>';
 
       var fragment = document.body.createFragment(html, validator: validator);
       var template = fragment.nodes.single;
 
       var expectedContent = document.body.createFragment(
@@ skipping 323 matching lines @@
           '<image xlink:href="foo" data-foo="bar"/>'
         '</svg>';
 
       var fragment = new DocumentFragment.svg(svgText);
       var element = fragment.nodes.first;
       expect(element is svg.SvgSvgElement, isTrue);
       expect(element.children[0] is svg.ImageElement, isTrue);
     });
   });
 }