Don't use å in non-ascii test, as it can have multiple representations.

pkg/http_server/test/virtual_directory_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.
 
 import 'dart:async';
 import 'dart:io';
 
 import "package:http_server/http_server.dart";
 import 'package:path/path.dart' as pathos;
 import "package:unittest/unittest.dart";
@@ skipping 124 matching lines @@
         virDir.allowDirectoryListing = true;
 
         return getAsString(virDir, '/alert(\'hacked!\');')
           .then((result) {
             expect(result, contains('/alert('hacked!');/'));
           });
       });
 
       testVirtualDir('non-ascii-dir', (dir) {
         var virDir = new VirtualDirectory(dir.path);
-        new Directory('${dir.path}/æøå').createSync();
+        new Directory('${dir.path}/æø').createSync();
         virDir.allowDirectoryListing = true;
 
         return getAsString(virDir, '/')
           .then((result) {
-            expect(result, contains('æøå'));
+            expect(result, contains('æø'));
           });
       });
 
       testVirtualDir('content-type', (dir) {
         var virDir = new VirtualDirectory(dir.path);
         virDir.allowDirectoryListing = true;
 
         return getHeaders(virDir, '/')
           .then((headers) {
             var contentType = headers.contentType.toString();
@@ skipping 426 matching lines @@
           return virDir.serveFile(new File('${d.path}/file'), request);
         };
 
         return getAsString(virDir, '/')
           .then((result) {
             expect(result, 'file contents');
           });
     });
   });
 }