Docserver: Add support for viewing docs with a codereview patch applied

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
@@ skipping 89 matching lines @@
   def fetch(self, url):
     try:
       return self._ReadFile(os.path.join('server2',
                                          'test_data',
                                          'github_file_system',
                                          'apps_samples.zip'),
                             mode='rb')
     except IOError:
       return None
 
-class FakeIssuesFetcher(_FakeFetcher):
+class FakeRietveldAPI(_FakeFetcher):
+  def __init__(self, base_path):
+    _FakeFetcher.__init__(self, base_path)
+    self._base_pattern = re.compile(r'.*/(api/.*)')
+
   def fetch(self, url):
-    return 'Status,Summary,ID'
+    try:
+      return self._ReadFile(
+          os.path.join('server2',
+                       'test_data',
+                       'rietveld_patcher',
+                       self._base_pattern.match(url).group(1),
+                       'json'))
+    except IOError:
+      return None
+
+class FakeRietveldTarball(_FakeFetcher):
+  def __init__(self, base_path):
+    _FakeFetcher.__init__(self, base_path)
+    self._base_pattern = re.compile(r'.*/(tarball/\d+/\d+)')
+
+  def fetch(self, url):
+    try:
+      return self._ReadFile(
+          os.path.join('server2',
+                       'test_data',
+                       'rietveld_patcher',
+                       self._base_pattern.match(url).group(1) + '.tar.bz2'))
+    except IOError:
+      return None
 
 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)
+    '%s/api/.*' % url_constants.CODEREVIEW_SERVER: FakeRietveldAPI(docs),
+    '%s/tarball/.*' % url_constants.CODEREVIEW_SERVER:
+        FakeRietveldTarball(docs),
   })