def test_get_account_balance(self):
     """test get account balance
     """
     bank=TDDBank()
     acc1=TDDAccount(001,50)
     bank.add_account(acc1)
     self.assertEqual(bank.get_account_balance(001),50)
    def test_add_account(self):
        """test add account
        """
        bank=TDDBank()

        acc1=TDDAccount(001,50)
        acc2=TDDAccount(002,100)

        bank.add_account(acc1)
        bank.add_account(acc2)

        self.assertEqual(len(bank.accounts), 2)