def test_delete_all(self):
users = yield User.all()
ids = [user.id for user in users]
for _ in range(3):
yield User(first_name="blah").save()
yield User.deleteAll(["first_name = ?", "blah"])
users = yield User.all()
resultids = [user.id for user in users]
self.assertEqual(resultids, ids)
