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

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

 # Copyright (c) 2012 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 sys
 
 import schema_util
 from docs_server_utils import ToUnicode
 from file_system import FileNotFoundError
 from future import Gettable, Future
+from path_util import ToDirectory
 from third_party.handlebar import Handlebar
 from third_party.json_schema_compiler import json_parse
 from third_party.json_schema_compiler.memoize import memoize
 
 
 _SINGLE_FILE_FUNCTIONS = set()
 
 
 def SingleFile(fn):
   '''A decorator which can be optionally applied to the compilation function
@@ skipping 197 matching lines @@
     def resolve():
       cache_data = self._compilation_function(path, future_files.Get())
       self._file_object_store.Set(path, _CacheEntry(cache_data, version))
       return cache_data
     return Future(delegate=Gettable(resolve))
 
   def GetFromFileListing(self, path):
     '''Calls |compilation_function| on the listing of the files at |path|.
     Assumes that the path given is to a directory.
     '''
-    if not path.endswith('/'):
-      path += '/'
+    # TODO(kalman): assert IsDirectory(path)
+    path = ToDirectory(path)
 
     try:
       version = self._file_system.Stat(path).version
     except FileNotFoundError:
       return Future(exc_info=sys.exc_info())
 
     cache_entry = self._list_object_store.Get(path).Get()
     if (cache_entry is not None) and (version == cache_entry.version):
       return Future(value=cache_entry._cache_data)
 
@@ skipping 10 matching lines @@
       return cache_entry.version
     return self._file_system.Stat(path).version
 
   def GetFileListingVersion(self, path):
     if not path.endswith('/'):
       path += '/'
     cache_entry = self._list_object_store.Get(path).Get()
     if cache_entry is not None:
       return cache_entry.version
     return self._file_system.Stat(path).version