Support for observable models, fixes #259

test/data/input/component_field_test.html

Index: test/data/input/component_field_test.html
diff --git a/test/data/input/component_field_test.html b/test/data/input/component_field_test.html
index 1c07ebcb39e14efeaaed7c39f9a5bf872d779d70..a65b332194fa188357a9dd5594347c66e2b2e55e 100644
--- a/test/data/input/component_field_test.html
+++ b/test/data/input/component_field_test.html
@@ -37,10 +37,17 @@
   <script type="application/dart">
     import 'dart:html';
     import 'package:unittest/unittest.dart';
+    import 'package:web_ui/observe.dart';
+
+    @observable
+    var greetings = new ObservableList.from(['hello', 'hi']);
+
+    @observable
+    var names = new ObservableList.from(['world', 'universe']);
+
+    @observable
+    var endings = new ObservableList.from(['??', '!!']);
 
-    var greetings = ['hello', 'hi'];
-    var names = ['world', 'universe'];
-    var endings = ['??', '!!'];
     main() {
       window.setTimeout(() {
         expect(query('x-greeter').attributes, { 'title': 'world' });