fixed relative root tests

test/url_test.dart

 // Copyright (c) 2012, 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.
 
 import 'package:unittest/unittest.dart';
 import 'package:path/path.dart' as path;
 
 main() {
   var context = new path.Context(style: path.Style.url,
       current: 'http://dartlang.org/root/path');
@@ skipping 621 matching lines @@
       expect(context.isWithin('http://dartlang.org/foo', '/foo/bar'), isTrue);
       expect(context.isWithin('http://dartlang.org/foo', '/bar/baz'), isFalse);
       expect(context.isWithin('baz', 'http://dartlang.org/root/path/baz/bang'),
           isTrue);
       expect(context.isWithin('baz', 'http://dartlang.org/root/path/bang/baz'),
           isFalse);
     });
 
     test('from a relative root', () {
       var r = new path.Context(style: path.Style.url, current: 'foo/bar');
-      expect(context.isWithin('.', 'a/b/c'), isTrue);
-      expect(context.isWithin('.', '../a/b/c'), isFalse);
-      expect(context.isWithin('.', '../../a/foo/b/c'), isFalse);
-      expect(context.isWithin(
-              'http://dartlang.org/', 'http://dartlang.org/baz/bang'),
-          isTrue);
-      expect(context.isWithin('.', 'http://dartlang.org/baz/bang'), isFalse);
+      expect(r.isWithin('.', 'a/b/c'), isTrue);
+      expect(r.isWithin('.', '../a/b/c'), isFalse);
+      expect(r.isWithin('.', '../../a/foo/b/c'), isFalse);
+      expect(r.isWithin(
+          'http://dartlang.org/', 'http://dartlang.org/baz/bang'), isTrue);
+      expect(r.isWithin('.', 'http://dartlang.org/baz/bang'), isFalse);
     });
   });
 
   group('absolute', () {
     test('allows up to seven parts', () {
       expect(context.absolute('a'), 'http://dartlang.org/root/path/a');
       expect(context.absolute('a', 'b'), 'http://dartlang.org/root/path/a/b');
       expect(context.absolute('a', 'b', 'c'),
           'http://dartlang.org/root/path/a/b/c');
       expect(context.absolute('a', 'b', 'c', 'd'),
@@ skipping 107 matching lines @@
 
     test('with a root-relative URI', () {
       expect(context.prettyUri('/a/b'), '/a/b');
     });
 
     test('with a Uri object', () {
       expect(context.prettyUri(Uri.parse('a/b')), 'a/b');
     });
   });
 }