Index: Lib/test/test_pep277.py
===================================================================
--- Lib/test/test_pep277.py	(revision 77444)
+++ Lib/test/test_pep277.py	(working copy)
@@ -2,8 +2,6 @@
 # open, os.open, os.stat. os.listdir, os.rename, os.remove, os.mkdir, os.chdir, os.rmdir
 import sys, os, unittest
 from test import test_support
-if not os.path.supports_unicode_filenames:
-    raise unittest.SkipTest, "test works only on NT+"
 
 filenames = [
     'abc',
@@ -51,6 +49,8 @@
             raise test_support.TestFailed("Expected to fail calling '%s(%r)'"
                              % (fn.__name__, filename))
         except expected_exception, details:
+            if isinstance(details.filename, str):
+                filename = filename.encode(sys.getfilesystemencoding())
             if check_fn_in_exception and details.filename != filename:
                 raise test_support.TestFailed("Function '%s(%r) failed with "
                                  "bad filename in the exception: %r"
@@ -80,15 +80,16 @@
         f1 = os.listdir(test_support.TESTFN)
         f2 = os.listdir(unicode(test_support.TESTFN,
                                 sys.getfilesystemencoding()))
-        sf2 = set(u"\\".join((unicode(test_support.TESTFN), f))
+        sf2 = set(os.sep.join((unicode(test_support.TESTFN), f))
                   for f in f2)
         self.assertEqual(len(f1), len(self.files))
         self.assertEqual(sf2, set(self.files))
 
     def test_rename(self):
+        tmp = os.path.join(test_support.TESTFN, "tmp")
         for name in self.files:
-            os.rename(name,"tmp")
-            os.rename("tmp",name)
+            os.rename(name, tmp)
+            os.rename(tmp, name)
 
     def test_directory(self):
         dirname = os.path.join(test_support.TESTFN,u'Gr\xfc\xdf-\u66e8\u66e9\u66eb')