def test_findBy(self):
r = yield User.findBy(first_name="Non", last_name="Existant")
self.assertEqual(r, [])
r = yield User.findBy(first_name="First", last_name="Last", age=11)
self.assertEqual(r, [])
r = yield User.findBy(first_name="First", last_name="Last", age=10)
self.assertEqual(r[0], self.user)
r = yield User.findBy(first_name="First", last_name="Last")
self.assertEqual(r[0], self.user)
yield User(first_name="Bob").save()
r = yield User.findBy()
self.assertEqual(len(r), 2)
yield User(first_name=None).save()
r = yield User.findBy(first_name=None)
self.assertEqual(len(r), 1)
