Teach chromium_roll script to roll v8 git hashes.

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 351 matching lines @@
 
   def GitMock(self, cmd, args="", pipe=True):
     print "%s %s" % (cmd, args)
     return self._git_mock.Call("git", args)
 
   def LogMock(self, cmd, args=""):
     print "Log: %s %s" % (cmd, args)
 
   MOCKS = {
     "git": GitMock,
+    "roll-dep": GitMock, # TODO(machenbach): Yet another hack. Unify all mocks.
     # TODO(machenbach): Little hack to reuse the git mock for the one svn call
     # in merge-to-branch. The command should be made explicit in the test
     # expectations.
     "svn": GitMock,
     "vi": LogMock,
   }
 
   def Call(self, fun, *args, **kwargs):
     print "Calling %s with %s and %s" % (str(fun), str(args), str(kwargs))
 
@@ skipping 445 matching lines @@
 def list_to_dict(entries):
   return {"g_name@google.com": "c_name@chromium.org"}
 def get_list():
   pass""")
 
     TEST_CONFIG[DOT_GIT_LOCATION] = self.MakeEmptyTempFile()
     if not os.path.exists(TEST_CONFIG[CHROMIUM]):
       os.makedirs(TEST_CONFIG[CHROMIUM])
     TextToFile("Some line\n   \"v8_revision\": \"123444\",\n  some line",
                TEST_CONFIG[DEPS_FILE])
+    def WriteDeps():
+      TextToFile("Some line\n   \"v8_revision\": \"123455\",\n  some line",
+                 TEST_CONFIG[DEPS_FILE])
 
     os.environ["EDITOR"] = "vi"
     force_flag = " -f" if not manual else ""
     self.ExpectGit([
       Git("status -s -uno", ""),
       Git("status -s -b -uno", "## some_branch\n"),
       Git("svn fetch", ""),
       Git(("log -1 --format=%H --grep="
            "\"^Version [[:digit:]]*\.[[:digit:]]*\.[[:digit:]]*\" "
            "svn/trunk"), "push_hash\n"),
       Git("svn find-rev push_hash", "123455\n"),
       Git("log -1 --format=%s push_hash",
           "Version 3.22.5 (based on bleeding_edge revision r123454)\n"),
       Git("status -s -uno", ""),
       Git("checkout -f master", ""),
       Git("pull", ""),
       Git("checkout -b v8-roll-123455", ""),
+      Git("v8 123455", "rolled", cb=WriteDeps),
       Git(("commit -am \"Update V8 to version 3.22.5 "
            "(based on bleeding_edge revision r123454).\n\n"
            "Please reply to the V8 sheriff c_name@chromium.org in "
            "case of problems.\n\nTBR=c_name@chromium.org\""),
           ""),
       Git(("cl upload --send-mail --email \"author@chromium.org\"%s"
            % force_flag), ""),
     ])
 
     self.ExpectReadURL([
@@ skipping 642 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)