Implement auto-roll script.

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 16 matching lines @@
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 import os
 import tempfile
 import traceback
 import unittest
 
 import auto_push
 from auto_push import CheckLastPush
 from auto_push import SETTINGS_LOCATION
+import auto_roll
 import common_includes
 from common_includes import *
 import merge_to_branch
 from merge_to_branch import *
 import push_to_trunk
 from push_to_trunk import *
 import chromium_roll
 from chromium_roll import CHROMIUM
 from chromium_roll import DEPS_FILE
 from chromium_roll import ChromiumRoll
@@ skipping 207 matching lines @@
 
     if not isinstance(expected_call, dict):
       raise NoRetryException("Found wrong expectation type for %s %s"
                              % (name, " ".join(args)))
 
 
     # The number of arguments in the expectation must match the actual
     # arguments.
     if len(args) > len(expected_call['args']):
       raise NoRetryException("When calling %s with arguments, the "
-          "expectations must consist of at least as many arguments.")
+          "expectations must consist of at least as many arguments." % name)
 
     # Compare expected and actual arguments.
     for (expected_arg, actual_arg) in zip(expected_call['args'], args):
       if expected_arg != actual_arg:
         raise NoRetryException("Expected: %s - Actual: %s"
                                % (expected_arg, actual_arg))
 
     # The expected call contains an optional callback for checking the context
     # at the time of the call.
     if expected_call['cb']:
@@ skipping 626 matching lines @@
     self.ExpectGit([
       Git("status -s -uno", ""),
       Git("status -s -b -uno", "## some_branch\n"),
       Git("svn fetch", ""),
     ])
 
     def RunAutoPush():
       auto_push.AutoPush(TEST_CONFIG, self).Run(AUTO_PUSH_ARGS)
     self.assertRaises(Exception, RunAutoPush)
 
+  def testAutoRollExistingRoll(self):
+    self.ExpectReadURL([
+      URL("https://codereview.chromium.org/search",
+          "owner=author%40chromium.org&limit=30&closed=3&format=json",
+          ("{\"results\": [{\"subject\": \"different\"},"
+           "{\"subject\": \"Update V8 to Version...\"}]}")),
+    ])
+
+    result = auto_roll.AutoRoll(TEST_CONFIG, self).Run(
+        AUTO_PUSH_ARGS + ["-c", TEST_CONFIG[CHROMIUM]])
+    self.assertEquals(1, result)
+
+  # Snippet from the original DEPS file.
+  FAKE_DEPS = """
+vars = {
+  "v8_revision": "123455",
+}
+deps = {
+  "src/v8":
+    (Var("googlecode_url") % "v8") + "/" + Var("v8_branch") + "@" +
+    Var("v8_revision"),
+}
+"""
+
+  def testAutoRollUpToDate(self):
+    self.ExpectReadURL([
+      URL("https://codereview.chromium.org/search",
+          "owner=author%40chromium.org&limit=30&closed=3&format=json",
+          ("{\"results\": [{\"subject\": \"different\"}]}")),
+      URL("http://src.chromium.org/svn/trunk/src/DEPS",
+          self.FAKE_DEPS),
+    ])
+
+    self.ExpectGit([
+      Git(("log -1 --format=%H --grep="
+           "\"^Version [[:digit:]]*\.[[:digit:]]*\.[[:digit:]]* (based\" "
+           "svn/trunk"), "push_hash\n"),
+      Git("svn find-rev push_hash", "123455\n"),
+    ])
+
+    result = auto_roll.AutoRoll(TEST_CONFIG, self).Run(
+        AUTO_PUSH_ARGS + ["-c", TEST_CONFIG[CHROMIUM]])
+    self.assertEquals(1, result)
+
+  def testAutoRoll(self):
+    self.ExpectReadURL([
+      URL("https://codereview.chromium.org/search",
+          "owner=author%40chromium.org&limit=30&closed=3&format=json",
+          ("{\"results\": [{\"subject\": \"different\"}]}")),
+      URL("http://src.chromium.org/svn/trunk/src/DEPS",
+          self.FAKE_DEPS),
+    ])
+
+    self.ExpectGit([
+      Git(("log -1 --format=%H --grep="
+           "\"^Version [[:digit:]]*\.[[:digit:]]*\.[[:digit:]]* (based\" "
+           "svn/trunk"), "push_hash\n"),
+      Git("svn find-rev push_hash", "123456\n"),
+    ])
+
+    result = auto_roll.AutoRoll(TEST_CONFIG, self).Run(
+        AUTO_PUSH_ARGS + ["-c", TEST_CONFIG[CHROMIUM], "--roll"])
+    self.assertEquals(0, result)
+
   def testMergeToBranch(self):
     TEST_CONFIG[ALREADY_MERGING_SENTINEL_FILE] = self.MakeEmptyTempFile()
     TEST_CONFIG[DOT_GIT_LOCATION] = self.MakeEmptyTempFile()
     TEST_CONFIG[VERSION_FILE] = self.MakeEmptyTempFile()
     self.WriteFakeVersionFile(build=5)
     os.environ["EDITOR"] = "vi"
     extra_patch = self.MakeEmptyTempFile()
 
     def VerifyPatch(patch):
       return lambda: self.assertEquals(patch,
@@ skipping 130 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)