Docserver: Persist stat cache for versioned file systems

chrome/common/extensions/docs/server2/app_yaml_helper_test.py

 #!/usr/bin/env python
 # Copyright 2013 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 unittest
 
 from app_yaml_helper import AppYamlHelper
 from extensions_paths import SERVER2
 from host_file_system_provider import HostFileSystemProvider
@@ skipping 74 matching lines @@
 
     def apply_update(update):
       update = MoveTo(SERVER2, update)
       file_system_at_head.Update(update)
       updates.append(update)
 
     def host_file_system_constructor(branch, commit=None):
       self.assertEqual('master', branch)
       self.assertTrue(commit is not None)
       return MockFileSystem.Create(
-          TestFileSystem(test_data, relative_to=SERVER2), updates[:commit])
+          TestFileSystem(test_data, relative_to=SERVER2), updates[:int(commit)])
 
     object_store_creator = ObjectStoreCreator.ForTest()
     host_file_system_provider = HostFileSystemProvider(
         object_store_creator,
         default_master_instance=file_system_at_head,
         constructor_for_test=host_file_system_constructor)
     helper = AppYamlHelper(object_store_creator, host_file_system_provider)
 
     def assert_is_up_to_date(version):
       self.assertTrue(helper.IsUpToDate(version),
@@ skipping 64 matching lines @@
     self.assertEqual(6, helper.GetFirstRevisionGreaterThan('2-1-0'))
     self.assertEqual(7, helper.GetFirstRevisionGreaterThan('2-2-0'))
     self.assertEqual(7, helper.GetFirstRevisionGreaterThan('2-3-0'))
     self.assertEqual(8, helper.GetFirstRevisionGreaterThan('2-4-0'))
     self.assertEqual(8, helper.GetFirstRevisionGreaterThan('2-5-0'))
     assert_is_up_to_date('2-6-0')
     assert_is_up_to_date('2-7-0')
 
 if __name__ == '__main__':
   unittest.main()