dart2js native mixin application should extend 'Interface', not 'Object'

tests/html/node_test.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library NodeTest;
 import '../../pkg/unittest/lib/unittest.dart';
 import '../../pkg/unittest/lib/html_individual_config.dart';
 import 'dart:html';
 import 'dart:svg' as svg;
 
@@ skipping 306 matching lines @@
 
     testUnsupported('fillRange', () {
       makeNodeWithChildren().nodes.fillRange(0, 1, null);
     });
 
     testUnsupported('setAll', () {
       makeNodeWithChildren().nodes.setAll(0, [new InputElement()]);
     });
   });
 
+  group('NodeList', () {

[blois, 2013/05/10 00:34:30]

Why not put it in group('_NodeList')?

Names are too close, can these be combined?

[sra1, 2013/05/10 22:13:26]

Done.

+    // Tests for methods on the DOM class 'NodeList' that get their
+    // implementation from 'Object' and/or 'Interceptor'.  Some of these tests
+    // simply check that a method can be called.
+    List<Node> makeNodeList() =>
+        makeNodeWithChildren().$dom_getElementsByTagName('br');
+
+    test('trueNodeList', () {
+      var nodes = makeNodeList();
+      expect(nodes is NodeList, true);
+    });
+
+    test('hashCode', () {
+      var nodes = makeNodeList();
+      var hash = nodes.hashCode;
+      final int N = 1000;
+      int matchCount = 0;
+      for (int i = 0; i < N; i++) {
+        if (makeNodeList().hashCode == hash) matchCount++;
+      }
+      expect(matchCount, lessThan(N));
+    });
+
+    test('operator==', () {
+      var a = [makeNodeList(), makeNodeList(), null];
+      for (int i = 0; i < a.length; i++) {
+        for (int j = 0; j < a.length; j++) {
+          expect(i == j,  a[i] == a[j]);
+        }
+      }
+    });
+
+    test('runtimeType', () {
+      var nodes1 = makeNodeList();
+      var nodes2 = makeNodeList();
+      var type1 = nodes1.runtimeType;
+      var type2 = nodes2.runtimeType;
+      expect(type1 == type2, true);
+      String name = '$type1';
+      if (name.length > 3) {
+        expect(name, 'NodeList');
+      }
+    });
+  });
+
   group('_NodeList', () {
     List<Node> makeNodeList() =>
       makeNodeWithChildren().nodes.where((_) => true).toList();
 
     test('first', () {
       var nodes = makeNodeList();
       expect(nodes.first, isText);
     });
 
     test('where', () {
@@ skipping 20 matching lines @@
     });
 
     test('TreeWalker', () {
       var root = makeNodeWithChildren();
       var treeWalker = new TreeWalker(root, NodeFilter.SHOW_COMMENT);
       expect(treeWalker.nextNode(), isComment);
       expect(treeWalker.nextNode(), isNull);
     });
   });
 }