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

pkg/mdv/test/mdv_test_utils.dart

Index: pkg/mdv/test/mdv_test_utils.dart
diff --git a/pkg/mdv/test/mdv_test_utils.dart b/pkg/mdv/test/mdv_test_utils.dart
index e055824b089457e180f7c306e32c69659d8f16b0..980a44c4813962cb1ad95b17e0c168a9e80db91a 100644
--- a/pkg/mdv/test/mdv_test_utils.dart
+++ b/pkg/mdv/test/mdv_test_utils.dart
@@ -5,6 +5,7 @@
 library observe_utils;
 
 import 'dart:async';
+import 'dart:html';
 import 'package:observe/observe.dart';
 import 'package:unittest/unittest.dart';
 
@@ -17,6 +18,19 @@ toSymbolMap(Map map) {
   return result;
 }
 
+recursivelySetTemplateModel(element, model, [delegate]) {
+  for (var node in element.queryAll('*')) {
+    if (node.isTemplate) {
+      node.bindingDelegate = delegate;
+      node.model = model;
+    }
+  }
+}
+
+dispatchEvent(type, target) {
+  target.dispatchEvent(new Event(type, cancelable: false));
+}
+
 class FooBarModel extends ObservableBase {
   @observable var foo;
   @observable var bar;