test: added simple View test

modules/facade/src/collection.es6

@@ -11,5 +11,8 @@ export class MapWrapper {
 export class ListWrapper {
   static create():List { return new List(); }
   static get(m, k) { return m[k]; }
-  static set(m, k, v) { m[k] = v; }  
-}
+  static set(m, k, v) { m[k] = v; }
+  static clone(array) {
+    return Array.prototype.slice.call(array, 0);
+  }
+}

modules/facade/src/dom.dart

@@ -20,4 +20,7 @@ class DOM {
   static setText(Text text, String value) {
     text.text = value;
   }
+  static clone(Node node) {
+    return node.clone(true);
+  }
 }

modules/facade/src/dom.es6

@@ -20,4 +20,12 @@ export class DOM {
   static setText(text:Text, value:String) {
     text.nodeValue = value;
   }
+  static createTemplate(html) {
+    var t = document.createElement('template');
+    t.innerHTML = html;
+    return t;
+  }
+  static clone(node:Node) {
+    return node.cloneNode(true);
+  }
 }