Group SCM-specific functions in classes to simplify generalization of the interface.

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 __builtin__
 import os
 import random
@@ skipping 53 matching lines @@
   def compareMembers(self, object, members):
     """If you add a member, be sure to add the relevant test!"""
     # 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
+      print>>sys.stderr, diff
     self.assertEqual(actual_members, expected_members)
 
   def UnMock(self, object, name):
     """Restore an object inside a test."""
     for (parent, old_child, child_name) in self.mox.stubs.cache:
       if parent == object and child_name == name:
         setattr(parent, child_name, old_child)
         break
 
 
@@ skipping 14 matching lines @@
     self.MockList(subprocess, ('call', 'Popen'))
     # Don't mock stderr since it confuses unittests.
     self.MockList(sys, ('stdin', 'stdout'))
 
   def MockList(self, parent, items_to_mock):
     for item in items_to_mock:
       # Skip over items not present because of OS-specific implementation,
       # implemented only in later python version, etc.
       if hasattr(parent, item):
         self.mox.StubOutWithMock(parent, item)