def METHOD_NAME(self):
    sandbox = SettingsSandbox('testing', 'foo', self.event)
    sandbox.set('foo', 'bar')
    self.assertEqual(sandbox.get('foo'), 'bar')
    self.assertEqual(self.event.settings.get('testing_foo_foo'), 'bar')
    self.assertIsNone(self.event.settings.get('foo'), 'bar')
    sandbox['bar'] = 'baz'
    sandbox.baz = 42
    with scopes_disabled():
        self.event = Event.objects.get(id=self.event.id)
    sandbox = SettingsSandbox('testing', 'foo', self.event)
    self.assertEqual(sandbox['bar'], 'baz')
    self.assertEqual(sandbox.baz, '42')
    del sandbox.baz
    del sandbox['bar']
    self.assertIsNone(sandbox.bar)
    self.assertIsNone(sandbox['baz'])