Adding ElementEventStream.capture

tests/html/element_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 ElementTest;
 import '../../pkg/unittest/lib/unittest.dart';
 import '../../pkg/unittest/lib/html_individual_config.dart';
 import 'dart:async';
 import 'dart:html';
 import 'dart:svg' as svg;
@@ skipping 831 matching lines @@
       expect(firedEvent3, true);
 
       var firedEvent5 = false;
       queryAll(':root').onClick.matches('.e').listen((event) {
         firedEvent5 = true;
       });
       expect(firedEvent5, false);
       query('.i').click();
       expect(firedEvent5, true);
     });
+
+    test('event ordering', () {
+      var a = new DivElement();
+      var b = new DivElement();
+      a.append(b);
+      var c = new DivElement();
+      b.append(c);
+
+      var eventOrder = [];
+
+      a.on['custom_event'].listen((_) {
+        eventOrder.add('a no-capture');
+      });
+
+      a.on['custom_event'].capture((_) {
+        eventOrder.add('a capture');
+      });
+
+      b.on['custom_event'].listen((_) {
+        eventOrder.add('b no-capture');
+      });
+
+      b.on['custom_event'].capture((_) {
+        eventOrder.add('b capture');
+      });
+
+      document.body.append(a);
+
+      var event = new Event('custom_event', canBubble: true);
+      c.dispatchEvent(event);
+      expect(eventOrder, [
+        'a capture',
+        'b capture',
+        'b no-capture',
+        'a no-capture'
+      ]);
+    });
   });
 
   group('ElementList', () {
     // Tests for methods on the DOM class 'NodeList'.
     //
     // There are two interesting things that are checked here from the viewpoint
     // of the dart2js implementation of a 'native' class:
     //
     //   1. Some methods are implementated from by 'Object' or 'Interceptor';
     //      some of these tests simply check that a method can be called.
@@ skipping 53 matching lines @@
 
     test('sublist', () {
       var range = makeElementList().sublist(1, 3);
       expect(range.length, 2);
       expect(range[0], isBRElement);
       expect(range[1], isBRElement);
     });
 
   });
 }