pkg/path: migrate to pkg/test

test/windows_test.dart

Index: test/windows_test.dart
diff --git a/test/windows_test.dart b/test/windows_test.dart
index a174305a745cdeb2f5fb23292a6647c8762cf4d3..11ca9ec5557fc536232919b3e595e198e392fbf6 100644
--- a/test/windows_test.dart
+++ b/test/windows_test.dart
@@ -2,9 +2,11 @@
 // 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.
 
+@TestOn('windows && vm')
+
 library path.test.windows_test;
 
-import 'package:unittest/unittest.dart';
+import 'package:test/test.dart';
 import 'package:path/path.dart' as path;
 
 import 'utils.dart';