Exclude attribute bindings from configuration. Fixes #3288.

src/standard/configure.html

@@ -136,7 +136,9 @@ subject to an additional IP rights grant found at http://polymer.github.io/PATEN
             for (var i=0, l=fx.length, x; (i<l) && (x=fx[i]); i++) {
               // TODO(kschaaf): compound bindings (as well as computed effects)
               // are excluded from top-down configure for now; to be revisited
-              if (x.kind === 'annotation' && !x.isCompound) {
+              if (x.kind === 'annotation' &&
+                  x.effect.kind !== 'attribute' &&
+                  !x.isCompound) {
                 var node = this._nodes[x.effect.index];
                 // seeding configuration only
                 if (node._configValue) {

test/unit/configure-elements.html

@@ -128,7 +128,7 @@
 
 <dom-module id="x-configure-host">
   <template>
-    <x-configure-child id="child" content="{{content}}" object="{{object.goo}}"></x-configure-child>
+    <x-configure-child id="child" content="{{content}}" object="{{object.goo}}" attr$="{{attrValue}}"></x-configure-child>
   </template>
   <script>
     Polymer({
@@ -156,6 +156,9 @@
         },
         stomp: {
           value: 5
+        },
+        attrValue: {
+          value: 'attrValue'
         }
       }
 

test/unit/configure.html

@@ -22,9 +22,9 @@ subject to an additional IP rights grant found at http://polymer.github.io/PATEN
 
   <x-configure-value content="attr" object='{"foo": "obj-attr"}'></x-configure-value>
 
-  <x-configure-host></x-configure-host>  
+  <x-configure-host></x-configure-host>
 
-  <x-configure-host content="attr"></x-configure-host>  
+  <x-configure-host content="attr"></x-configure-host>
 
 <script>
 
@@ -53,7 +53,7 @@ subject to an additional IP rights grant found at http://polymer.github.io/PATEN
 
     test('value set in properties initializes correctly', function() {
       var e = document.querySelector('x-configure-value');
-      testConfigure(e, 'default', 'obj-default');      
+      testConfigure(e, 'default', 'obj-default');
     });
 
     test('attribute overrides value set in properties', function() {
@@ -81,6 +81,12 @@ subject to an additional IP rights grant found at http://polymer.github.io/PATEN
       assert.equal(e.readOnly, 'default');
     });
 
+    test('properties for attribute bindings not configured', function() {
+      var e = document.querySelector('x-configure-host');
+      assert.equal(e.$.child.getAttribute('attr'), 'attrValue');
+      assert.equal(e.$.child.attr, undefined);
+    });
+
   });
 
 </script>