Extensions Docs Server: Preview server and more integration tests

chrome/common/extensions/docs/server2/appengine_wrappers.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.
 
-from in_memory_memcache import InMemoryMemcache
-
-# This will attempt to import the actual Appengine modules, and if it fails,
+# This will attempt to import the actual App Engine modules, and if it fails,
 # they will be replaced with fake modules. This is useful during testing.
 try:
   import google.appengine.ext.webapp as webapp
   import google.appengine.api.memcache as memcache
   import google.appengine.api.urlfetch as urlfetch
 except ImportError:
   class FakeUrlFetch(object):
+    """A fake urlfetch module that errors for all method calls.
+    """
     def fetch(self, url):
       raise NotImplementedError()
 
     def create_rpc(self):
       raise NotImplementedError()
 
     def make_fetch_call(self):
       raise NotImplementedError()
   urlfetch = FakeUrlFetch()
 
-  # Use an in-memory memcache if Appengine memcache isn't available.
+  class InMemoryMemcache(object):
+    """A memcache that stores items in memory instead of using the memcache
+    module.
+    """
+    def __init__(self):
+      self._cache = {}
+
+    def set(self, key, value, namespace, time=60):
+      if namespace not in self._cache:
+        self._cache[namespace] = {}
+      self._cache[namespace][key] = value
+
+    def get(self, key, namespace):
+      if namespace not in self._cache:
+        return None
+      return self._cache[namespace].get(key, None)
+
+    def delete(self, key, namespace):
+      if namespace in self._cache:
+        self._cache[namespace].pop(key)
   memcache = InMemoryMemcache()
 
   # A fake webapp.RequestHandler class for Handler to extend.
   class webapp(object):
     class RequestHandler(object):
       def __init__(self, request, response):
         self.request = request
         self.response = response
+
+      def redirect(self, path):
+        self.request.path = path