Docserver: Pull knowledge of host file systems into a single

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 file_system import FileNotFoundError
-from host_file_system_creator import HostFileSystemCreator
+from host_file_system_provider import HostFileSystemProvider
 from mock_file_system import MockFileSystem
 from object_store_creator import ObjectStoreCreator
 from test_file_system import TestFileSystem
 from test_util import DisableLogging
 
 _ExtractVersion, _IsGreater, _GenerateAppYaml = (
     AppYamlHelper.ExtractVersion,
     AppYamlHelper.IsGreater,
     AppYamlHelper.GenerateAppYaml)
 
@@ skipping 61 matching lines @@
 
     file_system_at_head = MockFileSystem(TestFileSystem(test_data))
 
     def apply_update(update):
       file_system_at_head.Update(update)
       updates.append(update)
 
     def constructor(branch, revision=None):
       return MockFileSystem.Create(TestFileSystem(test_data),
                                    updates[:revision])
-    host_file_system_creator = HostFileSystemCreator(
+    host_file_system_provider = HostFileSystemProvider(
         ObjectStoreCreator.ForTest(),
+        trunk=file_system_at_head,
         constructor_for_test=constructor)
     helper = AppYamlHelper('server2/app.yaml',
-                           file_system_at_head,
                            ObjectStoreCreator.ForTest(disable_wrappers=False),
-                           host_file_system_creator)
+                           host_file_system_provider)
 
     def assert_is_up_to_date(version):
       self.assertTrue(helper.IsUpToDate(version),
                       '%s is not up to date' % version)
       self.assertRaises(ValueError,
                         helper.GetFirstRevisionGreaterThan, version)
 
     self.assertEqual(0, helper.GetFirstRevisionGreaterThan('0-5-0'))
     assert_is_up_to_date('1-0-0')
     assert_is_up_to_date('1-5-0')
@@ skipping 57 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()