Keep svn checkout up-to-date in roll scripts.

tools/push-to-trunk/test_scripts.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 1407 matching lines @@
       Cmd("git branch -D auto-bump-up-version", ""),
     ]
     self.Expect(expectations)
 
     BumpUpVersion(TEST_CONFIG, self).Run(["-a", "author@chromium.org"])
 
   def testBumpUpVersionSvn(self):
     expectations = self._bumpUpVersion()
     expectations += [
       Cmd("git diff HEAD^ HEAD", "patch content"),
+      Cmd("svn update", "", cwd="[SVN_ROOT]"),
+      Cmd("svn status", "", cwd="[SVN_ROOT]"),
       Cmd("patch -d branches/bleeding_edge -p1 -i %s" %
           TEST_CONFIG[PATCH_FILE], "Applied patch...", cwd="[SVN_ROOT]"),
       Cmd("svn commit --non-interactive --username=author@chromium.org "
           "--config-dir=[CONFIG_DIR] "
           "-m \"[Auto-roll] Bump up version to 3.11.6.0\"",
           "", cwd="[SVN_ROOT]"),
       Cmd("git checkout -f bleeding_edge", ""),
       Cmd("git branch", "auto-bump-up-version\n* bleeding_edge"),
       Cmd("git branch -D auto-bump-up-version", ""),
     ]
@@ skipping 111 matching lines @@
 
 Review URL: https://codereview.chromium.org/83173002
 
 ------------------------------------------------------------------------""")
     self.assertEquals(
 """Prepare push to trunk.  Now working on version 3.23.11.
 
 R=danno@chromium.org
 
 Committed: https://code.google.com/p/v8/source/detail?r=17997""", body)