def test_amount_calculated_properly(self):
p = Payee(name='Test Payee')
p.save()
tx = Transaction(payee=p, date=timezone.now())
tx.save()
a = Account(name='Test Account')
a.save()
acct_entry = AccountEntry(debit_account=a, amount=45, transaction=tx)
acct_entry.save()
tx.register_accountentry_related.add(acct_entry)
self.assertEqual(tx.get_amount(), 45)
