Fix super_mox on posix.

tests/super_mox.py

 #!/usr/bin/python
 # Copyright (c) 2009 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Simplify unit tests based on pymox."""
 
 import os
 import random
 import string
 
 mox = None
 
 def OnTestsLoad():
   import sys
   old_path = sys.path
   global mox
   try:
     directory, _file = os.path.split(__file__)
     sys.path.append(os.path.abspath(os.path.join(directory, 'pymox')))
     sys.path.append(os.path.abspath(os.path.join(directory, '..')))
     try:
       import mox as Mox
       mox = Mox
     except ImportError:
       print "Trying to automatically checkout pymox."
       import subprocess
       subprocess.call(['svn', 'co', 'http://pymox.googlecode.com/svn/trunk',
                        os.path.join(directory, 'pymox')],
-                      shell=True)
+                      shell=sys.platform.startswith('win'))
       try:
-        import mox as Mox
+        import pymox.mox as Mox
         mox = Mox
       except ImportError:
         print >> sys.stderr, ("\nError, failed to load pymox\n")
         raise
   finally:
     # Restore the path
     sys.path = old_path
 
 
 # Automatically fetch pymox.
@@ skipping 39 matching lines @@
     # Skip over members starting with '_' since they are usually not meant to
     # be for public use.
     actual_members = [x for x in sorted(dir(object))
                       if not x.startswith('_')]
     expected_members = sorted(members)
     if actual_members != expected_members:
       diff = ([i for i in actual_members if i not in expected_members] +
               [i for i in expected_members if i not in actual_members])
       print diff
     self.assertEqual(actual_members, expected_members)