Add more test coverage to push-to-trunk script.

Ensure that fetching commits works with huge change logs. The verbosity option will help debugging when dcommit hangs.

BUG=
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/70143003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17645 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

tools/push-to-trunk/common_includes.py

@@ -67,6 +67,14 @@ def MSub(rexp, replacement, text):
   return re.sub(rexp, replacement, text, flags=re.MULTILINE)
 
 
+def GetLastChangeLogEntries(change_log_file):
+  result = []
+  for line in LinesInFile(change_log_file):
+    if re.search(r"^\d{4}-\d{2}-\d{2}:", line) and result: break
+    result.append(line)
+  return "".join(result)
+
+
 # Some commands don't like the pipe, e.g. calling vi from within the script or
 # from subscripts like git cl upload.
 def Command(cmd, args="", prefix="", pipe=True):

tools/push-to-trunk/push_to_trunk.py

@@ -221,18 +221,10 @@ class CommitRepository(Step):
     self.WaitForLGTM()
     # Re-read the ChangeLog entry (to pick up possible changes).
     # FIXME(machenbach): This was hanging once with a broken pipe.
-    TextToFile(Command("cat %s | awk --posix '{\
-        if ($0 ~ /^[0-9]{4}-[0-9]{2}-[0-9]{2}:/) {\
-          if (in_firstblock == 1) {\
-            exit 0;\
-          } else {\
-            in_firstblock = 1;\
-          }\
-        };\
-        print $0;\
-      }'" % self.Config(CHANGELOG_FILE)), self.Config(CHANGELOG_ENTRY_FILE))
+    TextToFile(GetLastChangeLogEntries(self.Config(CHANGELOG_FILE)),
+               self.Config(CHANGELOG_ENTRY_FILE))
 
-    if self.Git("cl dcommit", "PRESUBMIT_TREE_CHECK=\"skip\"") is None:
+    if self.Git("cl dcommit -v", "PRESUBMIT_TREE_CHECK=\"skip\"") is None:
       self.Die("'git cl dcommit' failed, please try again.")
 
 

tools/push-to-trunk/test_scripts.py

@@ -287,6 +287,22 @@ class ScriptTest(unittest.TestCase):
     self.assertEquals("6", self.MakeStep().Restore("new_build"))
     self.assertEquals("0", self.MakeStep().Restore("new_patch"))
 
+  def testLastChangeLogEntries(self):
+    TEST_CONFIG[CHANGELOG_FILE] = self.MakeEmptyTempFile()
+    l = """
+        Fixed something.
+        (issue 1234)\n"""
+    for _ in xrange(10): l = l + l
+
+    cl_chunk = """2013-11-12: Version 3.23.2\n%s
+        Performance and stability improvements on all platforms.\n\n\n""" % l
+
+    cl_chunk_full = cl_chunk + cl_chunk + cl_chunk
+    TextToFile(cl_chunk_full, TEST_CONFIG[CHANGELOG_FILE])
+
+    cl = GetLastChangeLogEntries(TEST_CONFIG[CHANGELOG_FILE])
+    self.assertEquals(cl_chunk, cl)
+
   def testSquashCommits(self):
     TEST_CONFIG[CHANGELOG_ENTRY_FILE] = self.MakeEmptyTempFile()
     with open(TEST_CONFIG[CHANGELOG_ENTRY_FILE], "w") as f:
@@ -368,7 +384,7 @@ class ScriptTest(unittest.TestCase):
        " 2 files changed\n",
         CheckPreparePush],
       ["cl upload -r \"reviewer@chromium.org\" --send-mail", "done\n"],
-      ["cl dcommit", "Closing issue\n"],
+      ["cl dcommit -v", "Closing issue\n"],
       ["svn fetch", "fetch result\n"],
       ["checkout svn/bleeding_edge", ""],
       [("log -1 --format=%H --grep=\"Prepare push to trunk.  "