fix a bug in the Event constructor

tests/html/events_test.dart

Index: tests/html/events_test.dart
diff --git a/tests/html/events_test.dart b/tests/html/events_test.dart
index a88d63196f48700ac9c601f1cd0026a40063da5e..4e22018b58a6e68e40f27bc245738fd1bbd1a7d4 100644
--- a/tests/html/events_test.dart
+++ b/tests/html/events_test.dart
@@ -5,12 +5,25 @@ import 'dart:html';
 
 main() {
   useHtmlConfiguration();
+
   test('TimeStamp', () {
     Event event = new Event('test');
 
     int timeStamp = event.timeStamp;
     expect(timeStamp, greaterThan(0));
   });
+
+  test('Event canBubble and cancelable', () {
+    // Try every combination of canBubble and cancelable
+    for (var i = 0; i < 4; i++) {
+      var bubble = (i & 1) != 0;
+      var cancel = (i & 2) != 0;
+      var e = new Event('input', canBubble: bubble, cancelable: cancel);
+      expect(e.bubbles, bubble, reason: 'canBubble was set to $bubble');
+      expect(e.cancelable, cancel, reason: 'cancelable was set to $cancel');
+    }
+  });
+
   // The next test is not asynchronous because [on['test'].dispatch(event)] fires the event
   // and event listener synchronously.
   test('EventTarget', () {
@@ -54,6 +67,7 @@ main() {
     element.dispatchEvent(event);
     expect(invocationCounter, 1);
   });
+
   test('InitMouseEvent', () {
     DivElement div = new Element.tag('div');
     MouseEvent event = new MouseEvent('zebra', relatedTarget: div);