def test_transactions_with_transfer(self):
mary_transactions = [
('OPEN', 100, 100),
('WITHDRAWAL', -20, 80),
]
dana_transactions = [
('OPEN', 0, 0),
('DEPOSIT', 20, 20),
]
mary_account = BankAccount(balance=100)
dana_account = BankAccount(balance=0)
mary_account.transfer(dana_account, 20)
self.assertEqual(mary_account.transactions, mary_transactions)
self.assertEqual(dana_account.transactions, dana_transactions)
def test_balance_cannot_be_written(self):
account1 = BankAccount()
account2 = BankAccount(100)
self.assertEqual(account1.balance, 0)
with self.assertRaises(Exception):
account1.balance = 50
self.assertEqual(account1.balance, 0)
self.assertEqual(account2.balance, 100)
with self.assertRaises(Exception):
account2.balance = 50
self.assertEqual(account2.balance, 100)
account1.deposit(100)
account2.deposit(10)
self.assertEqual(account1.balance, 100)
self.assertEqual(account2.balance, 110)
with self.assertRaises(Exception):
account2.balance = 500
self.assertEqual(account2.balance, 110)
account2.transfer(account1, 50)
self.assertEqual(account1.balance, 150)
self.assertEqual(account2.balance, 60)
def test_transfer(self):
mary_account = BankAccount(balance=100)
dana_account = BankAccount(balance=0)
mary_account.transfer(dana_account, 20)
self.assertEqual(mary_account.balance, 80)
self.assertEqual(dana_account.balance, 20)