Docserver: Make MockFileSystem not iterate over the entire file system as part

chrome/common/extensions/docs/server2/compiled_file_system_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 functools
 import os
 
 from appengine_wrappers import GetAppVersion
 from compiled_file_system import CompiledFileSystem
@@ skipping 121 matching lines @@
                      compiled_fs.GetFromFileListing(
                          'apps/deepdir/deeper/').Get())
 
   def testCaching(self):
     compiled_fs = _GetTestCompiledFsCreator()(identity, CompiledFileSystemTest)
     self.assertEqual('404.html contents',
                      compiled_fs.GetFromFile('404.html').Get())
     self.assertEqual(set(('file.html',)),
                      set(compiled_fs.GetFromFileListing('apps/fakedir').Get()))
 
-    compiled_fs._file_system._obj['404.html'] = 'boom'
-    compiled_fs._file_system._obj['apps']['fakedir']['boom.html'] = 'blam'
+    compiled_fs._file_system._path_values['404.html'] = 'boom'
+    compiled_fs._file_system._path_values['apps/fakedir/'] = [
+        'file.html', 'boom.html']
     self.assertEqual('404.html contents',
                      compiled_fs.GetFromFile('404.html').Get())
     self.assertEqual(set(('file.html',)),
                      set(compiled_fs.GetFromFileListing('apps/fakedir').Get()))
 
     compiled_fs._file_system.IncrementStat()
     self.assertEqual('boom', compiled_fs.GetFromFile('404.html').Get())
     self.assertEqual(set(('file.html', 'boom.html')),
                      set(compiled_fs.GetFromFileListing('apps/fakedir').Get()))
 
@@ skipping 54 matching lines @@
     self.assertTrue(*mock_fs.CheckAndReset(stat_count=1,
                                            read_count=2,
                                            read_resolve_count=1))
     future.Get()
     self.assertTrue(*mock_fs.CheckAndReset(read_count=2, read_resolve_count=3))
 
 
 
 if __name__ == '__main__':
   unittest.main()