[sync] Add store version to model type store backend

components/sync/PRESUBMIT_test.py

 # Copyright (c) 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import os
 import re
 import sys
 import unittest
 import PRESUBMIT
 
-sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+sys.path.append(
+  os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__)))))
 from PRESUBMIT_test_mocks import MockOutputApi, MockChange
 
 class MockInputApi(object):
   """ Mocked input api for unit testing of presubmit.
   This lets us mock things like file system operations and changed files.
   """
   def __init__(self):
     self.re = re
     self.os_path = os.path
     self.files = []
@@ skipping 34 matching lines @@
     return self._local_path
 # Format string used as the contents of a mock sync.proto in order to
 # test presubmit parsing of EntitySpecifics definition in that file.
 MOCK_PROTOFILE_CONTENTS = ('\n'
   'message EntitySpecifics {\n'
   '//comment\n'
   '\n'
   'optional AutofillSpecifics autofill = 123;\n'
   'optional AppSpecifics app = 456;\n'
   'optional AppSettingSpecifics app_setting = 789;\n'
+  'optional ExtensionSettingSpecifics extension_setting = 910;\n'
   '//comment\n'
   '}\n')
 
 
 # Format string used as the contents of a mock model_type.cc
 # in order to test presubmit parsing of the ModelTypeInfoMap in that file.
 MOCK_MODELTYPE_CONTENTS =('\n'
   'const ModelTypeInfo kModelTypeInfoMap[] = {\n'
   '{APP_SETTINGS, "APP_SETTING", "app_settings", "App settings",\n'
   'sync_pb::EntitySpecifics::kAppSettingFieldNumber, 13},\n'
@@ skipping 42 matching lines @@
     self.assertEqual(1, len(results))
     self.assertTrue('root tag' in results[0].message)
 
   def testInvalidChangeDuplicatedValues(self):
     results = self._testChange('{APP_SETTINGS, "APP_SETTING",\n'
       '"app_settings", "App settings",\n'
       'sync_pb::EntitySpecifics::kAppSettingFieldNumber, 13},\n')
     self.assertEqual(6, len(results))
     self.assertTrue('APP_SETTINGS' in results[0].message)
 
+  def testBlacklistedRootTag(self):
+    results = self._testChange('{EXTENSION_SETTING, "EXTENSION_SETTING",\n'
+      '"_mts_schema_descriptor","Extension Setting",\n'
+      'sync_pb::EntitySpecifics::kExtensionSettingFieldNumber, 6},')
+    self.assertEqual(2, len(results))
+    self.assertTrue('_mts_schema_descriptor' in results[0].message)
+    self.assertTrue("blacklist" in results[0].message)
+
   def _testChange(self, modeltype_literal):
     mock_input_api = MockInputApi()
     mock_input_api.files = [
       MockFile(os.path.abspath('./protocol/sync.proto'),
         MOCK_PROTOFILE_CONTENTS),
       MockFile(os.path.abspath('./syncable/model_type.cc'),
         MOCK_MODELTYPE_CONTENTS % (modeltype_literal))
     ]
 
     return PRESUBMIT.CheckChangeOnCommit(mock_input_api, MockOutputApi())
 if __name__ == '__main__':
   unittest.main()