One final fix to the descriptor test on Windows.

pkg/scheduled_test/test/descriptor_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 descriptor_test;
 
 import 'dart:async';
 import 'dart:io';
 
 import 'package:pathos/path.dart' as path;
@@ skipping 691 matching lines @@
 
   expectTestsPass("directory().load() loads a deeply-nested file", () {
     test('test', () {
       var dir = d.dir('dir', [
         d.dir('subdir', [
           d.file('name.txt', 'subcontents')
         ]),
         d.file('name.txt', 'contents')
       ]);
 
-      expect(byteStreamToString(dir.load(path.join('subdir', 'name.txt'))),
+      expect(byteStreamToString(dir.load('subdir/name.txt')),
           completion(equals('subcontents')));
     });
   });
 
   expectTestsPass("directory().read() fails", () {
     test('test', () {
       var dir = d.dir('dir', [d.file('name.txt', 'contents')]);
       expect(dir.read().toList(),
           throwsA(equals("Can't read the contents of 'dir': is a directory.")));
     });
@@ skipping 159 matching lines @@
 
 Future<List<int>> byteStreamToList(Stream<List<int>> stream) {
   return stream.reduce(<int>[], (buffer, chunk) {
     buffer.addAll(chunk);
     return buffer;
   });
 }
 
 Future<String> byteStreamToString(Stream<List<int>> stream) =>
   byteStreamToList(stream).then((bytes) => new String.fromCharCodes(bytes));