Add more smoke test for gclient config and gclient revinfo.

tests/fake_repos.py

 #!/usr/bin/python
 # Copyright (c) 2010 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.
 
 """Generate fake repositories for testing."""
 
 import logging
 import os
 import re
@@ skipping 71 matching lines @@
   rev = re.search(r'revision (\d+).', out).group(1)
   st = Popen(['svn', 'status'], cwd=repo).communicate()[0]
   assert len(st) == 0, st
   logging.debug('At revision %s' % rev)
   return rev
 
 
 def commit_git(repo):
   """Commits the changes and returns the new hash."""
   check_call(['git', 'add', '-A', '-f'], cwd=repo)
-  out = Popen(['git', 'commit', '-m', 'foo'], cwd=repo).communicate()[0]
-  rev = re.search(r'^\[.*? ([a-f\d]+)\] ', out).group(1)
+  check_call(['git', 'commit', '-q', '--message', 'foo'], cwd=repo)
+  rev = Popen(['git', 'show-ref', '--head', 'HEAD'],
+              cwd=repo).communicate()[0].split(' ', 1)[0]
   logging.debug('At revision %s' % rev)
   return rev
 
 
 class FakeRepos(object):
   """Generate both svn and git repositories to test gclient functionality.
 
   Many DEPS functionalities need to be tested: Var, File, From, deps_os, hooks,
   use_relative_paths.
 
@@ skipping 279 matching lines @@
     sys.stdin.readline()
   except KeyboardInterrupt:
     fake.leak = True
   finally:
     fake.tearDown()
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))