Upgrading tests with unittest deprecations

tests/html/events_test.dart

 // Copyright (c) 2013, 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 tests.html.events_test;
 
 import 'dart:async';
 import 'dart:html';
 import 'package:unittest/unittest.dart';
 import 'package:unittest/html_config.dart';
@@ skipping 78 matching lines @@
   });
 
   test('DOM event callbacks are associated with the correct zone', () {
     var callbacks = [];
 
     final element = new Element.tag('test');
     element.id = 'eventtarget';
     document.body.append(element);
 
     // runZoned executes the function synchronously, but we don't want to
-    // rely on this. We therefore wrap it into an expectAsync0.
-    runZoned(expectAsync0(() {
+    // rely on this. We therefore wrap it into an expectAsync.
+    runZoned(expectAsync(() {
       Zone zone = Zone.current;
       expect(zone, isNot(equals(Zone.ROOT)));
 
       var sub;
 
       void handler(Event e) {
         expect(Zone.current, equals(zone));
 
-        scheduleMicrotask(expectAsync0(() {
+        scheduleMicrotask(expectAsync(() {
           expect(Zone.current, equals(zone));
           sub.cancel();
         }));
       }
 
-      sub = element.on['test'].listen(expectAsync1(handler));
+      sub = element.on['test'].listen(expectAsync(handler));
     }));
     element.dispatchEvent(new Event('test'));
   });
 }