Add new script to create release branches.

BUG=chromium:451975
TBR=tandrii@chromium.org
NOTRY=true
LOG=n

TEST=./script_test.py
TEST=tools/release/create_release.py -r machenbach@chromium.org -a machenbach@chromium.org --dry-run

Review URL: https://codereview.chromium.org/881683004

Cr-Commit-Position: refs/heads/master@{#26364}

tools/release/common_includes.py

@@ -682,6 +682,9 @@ class Step(GitRecipesMixin):
         line = re.sub("\d+$", self[prefix + "build"], line)
       elif line.startswith("#define PATCH_LEVEL"):
         line = re.sub("\d+$", self[prefix + "patch"], line)
+      elif (self[prefix + "candidate"] and
+            line.startswith("#define IS_CANDIDATE_VERSION")):
+        line = re.sub("\d+$", self[prefix + "candidate"], line)
       output += "%s\n" % line
     TextToFile(output, version_file)
 

tools/release/test_scripts.py

@@ -37,6 +37,8 @@ from auto_push import LastReleaseBailout
 import auto_roll
 import common_includes
 from common_includes import *
+import create_release
+from create_release import CreateRelease
 import merge_to_branch
 from merge_to_branch import *
 import push_to_candidates
@@ -860,6 +862,115 @@ Performance and stability improvements on all platforms."""
   def testPushToCandidatesForced(self):
     self._PushToCandidates(force=True)
 
+  def testCreateRelease(self):
+    TextToFile("", os.path.join(TEST_CONFIG["DEFAULT_CWD"], ".git"))
+
+    # The version file on master has build level 5.
+    self.WriteFakeVersionFile(build=5)
+
+    master_change_log = "2014-03-17: Sentinel\n"
+    TextToFile(master_change_log,
+               os.path.join(TEST_CONFIG["DEFAULT_CWD"], CHANGELOG_FILE))
+
+    commit_msg = """Version 3.22.5
+
+Log text 1 (issue 321).
+
+Performance and stability improvements on all platforms."""
+
+    def ResetChangeLog():
+      last_change_log = """1999-04-05: Version 3.22.4
+
+        Performance and stability improvements on all platforms.\n"""
+      TextToFile(last_change_log,
+                 os.path.join(TEST_CONFIG["DEFAULT_CWD"], CHANGELOG_FILE))
+
+
+    def CheckVersionCommit():
+      commit = FileToText(TEST_CONFIG["COMMITMSG_FILE"])
+      self.assertEquals(commit_msg, commit)
+      version = FileToText(
+          os.path.join(TEST_CONFIG["DEFAULT_CWD"], VERSION_FILE))
+      self.assertTrue(re.search(r"#define MINOR_VERSION\s+22", version))
+      self.assertTrue(re.search(r"#define BUILD_NUMBER\s+5", version))
+      self.assertFalse(re.search(r"#define BUILD_NUMBER\s+6", version))
+      self.assertTrue(re.search(r"#define PATCH_LEVEL\s+0", version))
+      self.assertTrue(re.search(r"#define IS_CANDIDATE_VERSION\s+0", version))
+
+      # Check that the change log on the candidates branch got correctly
+      # modified.
+      change_log = FileToText(
+          os.path.join(TEST_CONFIG["DEFAULT_CWD"], CHANGELOG_FILE))
+      self.assertEquals(
+"""1999-07-31: Version 3.22.5
+
+        Log text 1 (issue 321).
+
+        Performance and stability improvements on all platforms.
+
+
+1999-04-05: Version 3.22.4
+
+        Performance and stability improvements on all platforms.\n""",
+          change_log)
+
+    expectations = [
+      Cmd("git fetch origin +refs/heads/*:refs/heads/*", ""),
+      Cmd("git fetch origin +refs/branch-heads/*:refs/branch-heads/*", ""),
+      Cmd("git fetch origin +refs/pending/*:refs/pending/*", ""),
+      Cmd("git fetch origin +refs/pending-tags/*:refs/pending-tags/*", ""),
+      Cmd("git checkout -f origin/master", ""),
+      Cmd("git branch", ""),
+      Cmd("git log -1 --format=\"%H %T\" push_hash", "push_hash tree_hash"),
+      Cmd("git log -200 --format=\"%H %T\" refs/pending/heads/master",
+          "not_right wrong\npending_hash tree_hash\nsome other\n"),
+      Cmd("git fetch origin +refs/tags/*:refs/tags/*", ""),
+      Cmd("git tag", self.TAGS),
+      Cmd("git checkout -f origin/master -- src/version.cc",
+          "", cb=self.WriteFakeVersionFile),
+      Cmd("git log -1 --format=%H 3.22.4", "release_hash\n"),
+      Cmd("git log -1 --format=%s release_hash",
+          "Version 3.22.4 (based on abc3)\n"),
+      Cmd("git log --format=%H abc3..push_hash", "rev1\n"),
+      Cmd("git log -1 --format=%s rev1", "Log text 1.\n"),
+      Cmd("git log -1 --format=%B rev1", "Text\nLOG=YES\nBUG=v8:321\nText\n"),
+      Cmd("git log -1 --format=%an rev1", "author1@chromium.org\n"),
+      Cmd("git reset --hard origin/master", ""),
+      Cmd("git checkout -b work-branch pending_hash", ""),
+      Cmd("git checkout -f 3.22.4 -- ChangeLog", "", cb=ResetChangeLog),
+      Cmd("git checkout -f 3.22.4 -- src/version.cc", "",
+          cb=self.WriteFakeVersionFile),
+      Cmd("git commit -aF \"%s\"" % TEST_CONFIG["COMMITMSG_FILE"], "",
+          cb=CheckVersionCommit),
+      Cmd("git push origin "
+          "refs/heads/work-branch:refs/pending/branch-heads/3.22.5 "
+          "pending_hash:refs/pending-tags/branch-heads/3.22.5 "
+          "push_hash:refs/branch-heads/3.22.5", ""),
+      Cmd("git fetch", ""),
+      Cmd("git log -1 --format=%H --grep="
+          "\"Version 3.22.5\" branch-heads/3.22.5", "hsh_to_tag"),
+      Cmd("git tag 3.22.5 hsh_to_tag", ""),
+      Cmd("git push origin 3.22.5", ""),
+      Cmd("git checkout -f origin/master", ""),
+      Cmd("git branch", "* master\n  work-branch\n"),
+      Cmd("git branch -D work-branch", ""),
+      Cmd("git gc", ""),
+    ]
+    self.Expect(expectations)
+
+    args = ["-a", "author@chromium.org",
+            "-r", "reviewer@chromium.org",
+            "--revision", "push_hash"]
+    CreateRelease(TEST_CONFIG, self).Run(args)
+
+    cl = FileToText(os.path.join(TEST_CONFIG["DEFAULT_CWD"], CHANGELOG_FILE))
+    self.assertTrue(re.search(r"^\d\d\d\d\-\d+\-\d+: Version 3\.22\.5", cl))
+    self.assertTrue(re.search(r"        Log text 1 \(issue 321\).", cl))
+    self.assertTrue(re.search(r"1999\-04\-05: Version 3\.22\.4", cl))
+
+    # Note: The version file is on build number 5 again in the end of this test
+    # since the git command that merges to master is mocked out.
+
   C_V8_22624_LOG = """V8 CL.
 
 git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22624 123