[mdv] template.ref must recursive to find the original source template

pkg/mdv/test/template_element_test.dart

Index: pkg/mdv/test/template_element_test.dart
diff --git a/pkg/mdv/test/template_element_test.dart b/pkg/mdv/test/template_element_test.dart
index 28055c1aec65e3d1c7611ab124ab693f1f484c64..30ea211304d175b6d5491ef987fb45fc72dd3670 100644
--- a/pkg/mdv/test/template_element_test.dart
+++ b/pkg/mdv/test/template_element_test.dart
@@ -1349,6 +1349,21 @@ templateElementTests() {
     expect(div.nodes[3].text, 'Name: Leela');
   });
 
+  observeTest('RecursiveRef', () {
+    var div = createTestHtml(
+        '<template bind>' +

[justinfagnani, 2013/07/19 22:11:09]

no need for +s

[Jennifer Messerly, 2013/07/23 02:51:31]

Done.

+          '<template id=src>{{ foo }}</template>' +
+          '<template bind ref=src></template>' +
+        '</template>');
+
+    var m = toSymbols({ 'foo': 'bar'});

[justinfagnani, 2013/07/19 22:11:09]

extra space before 'foo'

[Jennifer Messerly, 2013/07/23 02:51:31]

Done.

+    recursivelySetTemplateModel(div, m);
+    performMicrotaskCheckpoint();
+
+    expect(div.nodes.length, 4);
+    expect(div.nodes[3].text, 'bar');
+  });
+
   observeTest('ChangeFromBindToRepeat', () {
     var div = createTestHtml(
         '<template bind="{{a}}">'