Modified unittest to use new argument syntax.

tests/html/query_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('QueryTest');
 #import('../../pkg/unittest/unittest.dart');
 #import('../../pkg/unittest/html_config.dart');
 #import('dart:html');
 
 main() {
   useHtmlConfiguration();
 
   final div = new DivElement();
   final canvas = new CanvasElement(width: 200, height: 200);
   canvas.id = 'testcanvas';
   final element =
       new Element.html("<div><br/><img/><input/><img/></div>");
   document.body.nodes.addAll([div, canvas,  element]);
   
+  var isCanvasElement =
+      predicate((x) => x is CanvasElement, 'is a CanvasElement');
+  var isImageElement =
+      predicate((x) => x is ImageElement, 'is an ImageElement');
 
   test('query', () {
       Element e = query('#testcanvas');
-      Expect.isNotNull(e);
-      Expect.stringEquals('testcanvas', e.id);
-      Expect.isTrue(e is CanvasElement);
-      Expect.equals(canvas, e);
+      expect(e, isNotNull);
+      expect(e.id, 'testcanvas');
+      expect(e, isCanvasElement);
+      expect(e, canvas);
     });
 
   test('query (None)', () {
       Element e = query('#nothere');
-      Expect.isNull(e);
+      expect(e, isNull);
     });
 
   test('queryAll (One)', () {
       List l = queryAll('canvas');
-      Expect.equals(1, l.length);
-      Expect.equals(canvas, l[0]);
+      expect(l.length, 1);
+      expect(l[0], canvas);
     });
 
 
   test('queryAll (Multiple)', () {
       List l = queryAll('img');
-      Expect.equals(2, l.length);
-      Expect.isTrue(l[0] is ImageElement);
-      Expect.isTrue(l[1] is ImageElement);
-      Expect.notEquals(l[0], l[1]);
+      expect(l.length, 2);
+      expect(l[0], isImageElement);
+      expect(l[1], isImageElement);
+      expect(l[0], isNot(equals(l[1])));
     });
 
   test('queryAll (None)', () {
       List l = queryAll('video');
-      Expect.isTrue(l.isEmpty);
+      expect(l.isEmpty, isTrue);
     });
 }