Docserver: achieve online vs offline (cron vs instance) behaviour at the object

chrome/common/extensions/docs/server2/fake_fetchers.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.
 
 # These are fake fetchers that are used for testing and the preview server.
 # They return canned responses for URLs. appengine_wrappers.py uses the fake
 # fetchers if the App Engine imports fail.
 
 import os
 import re
+import sys
 
 import appengine_wrappers
 from file_system import FileNotFoundError
 import url_constants
 
 class _FakeFetcher(object):
   def __init__(self, base_path):
     self._base_path = base_path
 
   def _ReadFile(self, path, mode='rb'):
@@ skipping 80 matching lines @@
                                          'github_file_system',
                                          'apps_samples.zip'),
                             mode='rb')
     except IOError:
       return None
 
 class FakeIssuesFetcher(_FakeFetcher):
   def fetch(self, url):
     return 'Status,Summary,ID'
 
-def ConfigureFakeFetchers(docs):
+def ConfigureFakeFetchers():
   '''Configure the fake fetcher paths relative to the docs directory.
   '''
+  docs = '/'.join((sys.path[0], os.pardir))
   appengine_wrappers.ConfigureFakeUrlFetch({
     url_constants.OMAHA_PROXY_URL: FakeOmahaProxy(docs),
     '%s/.*' % url_constants.SVN_URL: FakeSubversionServer(docs),
     '%s/.*' % url_constants.VIEWVC_URL: FakeViewvcServer(docs),
     '%s/commits/.*' % url_constants.GITHUB_URL: FakeGithubStat(docs),
     '%s/zipball' % url_constants.GITHUB_URL: FakeGithubZip(docs),
     re.escape(url_constants.OPEN_ISSUES_CSV_URL): FakeIssuesFetcher(docs),
     re.escape(url_constants.CLOSED_ISSUES_CSV_URL): FakeIssuesFetcher(docs)
   })