def testAdd(self):
keys = Keys()
before_count = len(keys.all())
self.assertTrue(keys.add(keys.new(), persist=False))
after_count = len(keys.all())
self.assertGreater(after_count, before_count)
self.assertEqual(before_count + 1, after_count)
def testFirst(self):
keys = Keys()
self.assertEqual(keys.first(), None)
entity = keys.new()
keys.add(entity, persist=False)
self.assertEqual(keys.first(), entity)