[Findit] Re-org code.

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(users.User(email='admin@chromium.org'), 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(users.User(email='admin@chromium.org'), False, a=1)
-
-  def testUpdateWhenChanged(self):
-    self._CreateFirstVersion()
-    config = _Config.Get()
-    self.assertIsNotNone(config)
-    self.assertTrue(config.Update(users.User(email='admin@chromium.org'), True,
-                                  a=2))
-
-    config = _Config.Get()
-    self.assertIsNotNone(config)
-    self.assertEqual(2, config.version_number)
-    self.assertEqual(2, config.a)
-
-  def testNotUpdateWhenNotChanged(self):
-    self._CreateFirstVersion()
-    config = _Config.Get()
-    self.assertIsNotNone(config)
-    self.assertFalse(config.Update(users.User(email='admin@chromium.org'), True,
-                                   a=1))
-
-    config = _Config.Get()
-    self.assertIsNotNone(config)
-    self.assertEqual(1, config.version_number)
-    self.assertEqual(1, config.a)