Custom Syntax's are now enabled via template.bindingDelegate =

pkg/mdv/test/element_bindings_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 node_bindings_test;
 
 import 'dart:async';
 import 'dart:html';
 import 'package:mdv/mdv.dart' as mdv;
 import 'package:observe/observe.dart';
@@ skipping 19 matching lines @@
 
   setUp(() {
     document.body.append(testDiv = new DivElement());
   });
 
   tearDown(() {
     testDiv.remove();
     testDiv = null;
   });
 
-  dispatchEvent(type, target) {
-    target.dispatchEvent(new Event(type, cancelable: false));
-  }
-
   observeTest('Text', () {
     var template = new Element.html('<template bind>{{a}} and {{b}}');
     testDiv.append(template);
     var model = toSymbolMap({'a': 1, 'b': 2});
     template.model = model;
     performMicrotaskCheckpoint();
     var text = testDiv.nodes[1];
     expect(text.text, '1 and 2');
 
     model[sym('a')] = 3;
@@ skipping 344 matching lines @@
 
     var model = toSymbolMap({'foo': 'bar'});
     el.attributes['foo'] = '{{foo}} {{foo}}';
     template.model = model;
 
     performMicrotaskCheckpoint();
     el = testDiv.nodes[1];
     expect(el.attributes['foo'], 'bar bar');
   });
 }