Retrieve recent v8 release information based on tags.

tools/release/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 389 matching lines @@
     # due to clustefuzz results.
     return []
 
   def Sleep(self, seconds):
     pass
 
   def GetDate(self):
     return "1999-07-31"
 
   def GetUTCStamp(self):
-    return "100000"
+    return "1000000"
 
   def Expect(self, *args):
     """Convenience wrapper."""
     self._mock.Expect(*args)
 
   def setUp(self):
     self._mock = SimpleMock()
     self._tmp_files = []
     self._state = {}
     TEST_CONFIG["DEFAULT_CWD"] = self.MakeEmptyTempDirectory()
@@ skipping 805 matching lines @@
 
     def ResetDEPS(revision):
       return lambda: WriteDEPS(revision)
 
     self.Expect([
       Cmd("git status -s -uno", ""),
       Cmd("git status -s -b -uno", "## some_branch\n"),
       Cmd("git fetch", ""),
       Cmd("git branch", "  branch1\n* branch2\n"),
       Cmd("git new-branch %s" % TEST_CONFIG["BRANCHNAME"], ""),
-      Cmd("git branch -r", "  branch-heads/3.21\n  branch-heads/3.3\n"),
-      Cmd("git reset --hard branch-heads/3.3", ""),
-      Cmd("git log --format=%H", "hash1\nhash_234"),
-      Cmd("git diff --name-only hash1 hash1^", ""),
+      Cmd("git fetch origin +refs/tags/*:refs/tags/*", ""),
+      Cmd("git rev-list --max-age=395200 --tags",
+          "bad_tag\nhash_234\nhash_123\nhash_345\n"),
+      Cmd("git describe --tags bad_tag", "3.23.42-1-deadbeef"),
+      Cmd("git describe --tags hash_234", "3.3.1.1"),
+      Cmd("git describe --tags hash_123", "3.21.2"),
+      Cmd("git describe --tags hash_345", "3.22.3"),
       Cmd("git diff --name-only hash_234 hash_234^", VERSION_FILE),
       Cmd("git checkout -f hash_234 -- %s" % VERSION_FILE, "",
           cb=ResetVersion(3, 1, 1)),
+      Cmd("git branch -r --contains hash_234", "  branch-heads/3.3\n"),
       Cmd("git log -1 --format=%B hash_234", c_hash_234_commit_log),
       Cmd("git log -1 --format=%s hash_234", ""),
       Cmd("git log -1 --format=%B hash_234", c_hash_234_commit_log),
       Cmd("git log -1 --format=%ci hash_234", "18:15"),
       Cmd("git checkout -f HEAD -- %s" % VERSION_FILE, "",
           cb=ResetVersion(22, 5)),
-      Cmd("git reset --hard branch-heads/3.21", ""),
-      Cmd("git log --format=%H", "hash_123\nhash4\nhash5\n"),
+
       Cmd("git diff --name-only hash_123 hash_123^", VERSION_FILE),
       Cmd("git checkout -f hash_123 -- %s" % VERSION_FILE, "",
           cb=ResetVersion(21, 2)),
+      Cmd("git branch -r --contains hash_123", "  branch-heads/3.21\n"),
       Cmd("git log -1 --format=%B hash_123", c_hash_123_commit_log),
       Cmd("git log -1 --format=%s hash_123", ""),
       Cmd("git log -1 --format=%B hash_123", c_hash_123_commit_log),
       Cmd("git log -1 --format=%ci hash_123", "03:15"),
       Cmd("git checkout -f HEAD -- %s" % VERSION_FILE, "",
           cb=ResetVersion(22, 5)),
-      Cmd("git reset --hard origin/candidates", ""),
-      Cmd("git log --format=%H", "hash_345\n"),
+
       Cmd("git diff --name-only hash_345 hash_345^", VERSION_FILE),
       Cmd("git checkout -f hash_345 -- %s" % VERSION_FILE, "",
           cb=ResetVersion(22, 3)),
+      Cmd("git branch -r --contains hash_345", "  origin/candidates\n"),
       Cmd("git log -1 --format=%B hash_345", c_hash_345_commit_log),
       Cmd("git log -1 --format=%s hash_345", ""),
       Cmd("git log -1 --format=%B hash_345", c_hash_345_commit_log),
       Cmd("git log -1 --format=%ci hash_345", ""),
       Cmd("git checkout -f HEAD -- %s" % VERSION_FILE, "",
           cb=ResetVersion(22, 5)),
-      Cmd("git reset --hard origin/master", ""),
       Cmd("git status -s -uno", "", cwd=chrome_dir),
       Cmd("git checkout -f master", "", cwd=chrome_dir),
       Cmd("git pull", "", cwd=chrome_dir),
       Cmd("git new-branch %s" % TEST_CONFIG["BRANCHNAME"], "",
           cwd=chrome_dir),
       Cmd("git fetch origin", "", cwd=chrome_v8_dir),
       Cmd("git log --format=%H --grep=\"V8\"", "c_hash1\nc_hash2\nc_hash3\n",
           cwd=chrome_dir),
       Cmd("git diff --name-only c_hash1 c_hash1^", "", cwd=chrome_dir),
       Cmd("git diff --name-only c_hash2 c_hash2^", "DEPS", cwd=chrome_dir),
@@ skipping 98 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)