Refactoring: Use fake cwd in release script tests.

tools/push-to-trunk/auto_push.py

 #!/usr/bin/env python
 # Copyright 2013 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
@@ skipping 22 matching lines @@
 import sys
 import urllib
 
 from common_includes import *
 import push_to_trunk
 
 SETTINGS_LOCATION = "SETTINGS_LOCATION"
 
 CONFIG = {
   PERSISTFILE_BASENAME: "/tmp/v8-auto-push-tempfile",
-  DOT_GIT_LOCATION: ".git",
   SETTINGS_LOCATION: "~/.auto-roll",
 }
 
 PUSH_MESSAGE_RE = re.compile(r".* \(based on bleeding_edge revision r(\d+)\)$")
 
 
 class Preparation(Step):
   MESSAGE = "Preparation."
 
   def RunStep(self):
-    self.InitialEnvironmentChecks()
+    self.InitialEnvironmentChecks(self.default_cwd)
     self.CommonPrepare()
 
 
 class CheckAutoPushSettings(Step):
   MESSAGE = "Checking settings file."
 
   def RunStep(self):
     settings_file = os.path.realpath(self.Config(SETTINGS_LOCATION))
     if os.path.exists(settings_file):
       settings_dict = json.loads(FileToText(settings_file))
@@ skipping 82 matching lines @@
       CheckAutoPushSettings,
       CheckTreeStatus,
       FetchLKGR,
       CheckLastPush,
       PushToTrunk,
     ]
 
 
 if __name__ == "__main__":  # pragma: no cover
   sys.exit(AutoPush(CONFIG).Run())