using unittest via package import

tests/html/cdata_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 cdata_test;
-import '../../pkg/unittest/lib/unittest.dart';
-import '../../pkg/unittest/lib/html_config.dart';
+import 'package:unittest/unittest.dart';
+import 'package:unittest/html_config.dart';
 import 'dart:html';
 
 
 main() {
   useHtmlConfiguration();
 
   test('remove', () {
     var div = new Element.html('<div>content</div>');
     var cdata = div.nodes[0];
     expect(cdata is CharacterData, true);
     expect(cdata, isNotNull);
     expect(div.innerHtml, 'content');
 
     cdata.remove();
     expect(div.innerHtml, '');
   });
 }