Index: Lib/test/test_file.py
===================================================================
--- Lib/test/test_file.py	(revision 82848)
+++ Lib/test/test_file.py	(working copy)
@@ -162,7 +162,7 @@
 class OtherFileTests(unittest.TestCase):
 
     def testOpenDir(self):
-        this_dir = os.path.dirname(__file__)
+        this_dir = os.path.dirname(os.path.abspath(__file__))
         for mode in (None, "w"):
             try:
                 if mode: