def test_delete_payment(self):
     self.payment1.save()
     self.assertTrue(Payment.check_exists(id=1))
     payment1 = Payment.get(id=1)
     self.assertTrue(payment1.delete())
     self.assertFalse(Payment.check_exists(id=1))
 def test_payment_exists(self):
     self.assertFalse(Payment.check_exists(id=1))
     self.payment1.save()
     self.assertTrue(Payment.check_exists(id=1))