Merged revisions 83643 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/branches/release27-maint

................
  r83643 | ronald.oussoren | 2010-08-03 09:31:12 +0200 (Tue, 03 Aug 2010) | 13 lines

  Merged revisions 83431 via svnmerge from
  svn+ssh://pythondev@svn.python.org/python/branches/py3k

  ........
    r83431 | ronald.oussoren | 2010-08-01 21:18:13 +0200 (Sun, 01 Aug 2010) | 6 lines


    test_getgroups as introduced with issue7900 failed on systems
    where 'id -G' and posix.getgroups() returned the same information,
    but one of the sources contains duplicate information. Rewrite the
    check using sets instead of lists.
  ........
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Lib/test/test_posix.py

@@ -315,11 +315,11 @@ class PosixTester(unittest.TestCase):
             # This test needs 'id -G'
             return
 
-        # The order of groups isn't important, hence the calls
-        # to sorted.
+        # 'id -G' and 'os.getgroups()' should return the same
+        # groups, ignoring order and duplicates.
         self.assertEqual(
-                list(sorted([int(x) for x in groups.split()])),
-                list(sorted(posix.getgroups())))
+                set([int(x) for x in groups.split()]),
+                set(posix.getgroups()))
 
 class PosixGroupsTester(unittest.TestCase):
     if posix.getuid() == 0 and hasattr(posix, 'getgroups') and sys.platform != 'darwin':