Docserver: Persist stat cache for versioned file systems

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

 # 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.
 
 from future import Future
 from object_store import ObjectStore
 
 class TestObjectStore(ObjectStore):
   '''An object store which records its namespace and behaves like a dict.
   Specify |init| with an initial object for the object store.
@@ skipping 16 matching lines @@
 
   def GetMulti(self, keys):
     def callback():
       self._get_count += 1
       return dict((k, self._store.get(k)) for k in keys if k in self._store)
     return Future(callback=callback)
 
   def SetMulti(self, mapping):
     self._set_count += 1
     self._store.update(mapping)
+    return Future(callback=lambda: None)
 
   def DelMulti(self, keys):
     self._del_count += 1
     for k in keys:
       self._store.pop(k, None)
 
   #
   # Testing methods.
   #
 
   def CheckAndReset(self, get_count=0, set_count=0, del_count=0):
     '''Returns a tuple (success, error). Use in tests like:
     self.assertTrue(*object_store.CheckAndReset(...))
     '''
     errors = []
     for desc, expected, actual in (('get_count', get_count, self._get_count),
                                    ('set_count', set_count, self._set_count),
                                    ('del_count', del_count, self._del_count)):
       if actual != expected:
         errors.append('%s: expected %s got %s' % (desc, expected, actual))
     try:
       return (len(errors) == 0, ', '.join(errors))
     finally:
       self.Reset()
 
   def Reset(self):
     self._get_count = 0
     self._set_count = 0
     self._del_count = 0