[Findit] Adding central config test class for unit tests

appengine/findit/model/test/versioned_config_test.py

 # Copyright 2015 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 google.appengine.ext import ndb
-
+from google.appengine.api import users
 from testing_utils import testing
 
 from model.versioned_config import VersionedConfig
 
 
 class _Config(VersionedConfig):
   a = ndb.IntegerProperty(indexed=False, default=0)
 
 
 class VersionedConfigTest(testing.AppengineTestCase):
   def _CreateFirstVersion(self):
     config = _Config.Get()
-    config.Update(a=1)
+    config.Update(user=users.User(email='admin@chromium.org'),
+                  is_admin=True, a=1)
 
   def testGetWhenNoConfigCreatedYet(self):
     config = _Config.Get()
     self.assertIsNotNone(config)
     self.assertEqual(0, config.a)
 
   def testNonAdminCanNotUpdate(self):
     config = _Config.Get()
     with self.assertRaises(Exception):
-      config.Update()
+      config.Update(user=users.User(email='admin@chromium.org'),
+                    is_admin=False, a=1)
 
   def testUpdateWhenChanged(self):
-    self.mock_current_user(user_email='test@chromium.org', is_admin=True)
     self._CreateFirstVersion()
     config = _Config.Get()
     self.assertIsNotNone(config)
-    self.assertTrue(config.Update(a=2))
+    self.assertTrue(config.Update(
+        user=users.User(email='admin@chromium.org'), is_admin=True,
+        a=2))
 
     config = _Config.Get()
     self.assertIsNotNone(config)
     self.assertEqual(2, config.version)
     self.assertEqual(2, config.a)
 
   def testNotUpdateWhenNotChanged(self):
-    self.mock_current_user(user_email='test@chromium.org', is_admin=True)
     self._CreateFirstVersion()
     config = _Config.Get()
     self.assertIsNotNone(config)
-    self.assertFalse(config.Update(a=1))
+    self.assertFalse(config.Update(
+        user=users.User(email='admin@chromium.org'), is_admin=True,
+        a=1))
 
     config = _Config.Get()
     self.assertIsNotNone(config)
     self.assertEqual(1, config.version)
     self.assertEqual(1, config.a)