def test_transfer_positive_mount_should_work(self):
account_1 = BankAccount('For testing', 100, '$')
account_2 = BankAccount('In dollars', 10, '$')
account_1.transfer_to(account_2, 50)
self.assertEqual(account_1.balance(), 50)
self.assertEqual(account_2.balance(), 60)
def test_transfer_more_than_vailable_balance_should_fail(self):
account_1 = BankAccount('For testing', 100, '$')
account_2 = BankAccount('In dollars', 10, '$')
with self.assertRaises(Exception):
account_1.transfer_to(account_2, 150)
self.assertEqual(account_1.balance(), 100)
self.assertEqual(account_2.balance(), 10)
def test_transfer_negative_amount(self):
account_1 = BankAccount('For testing', 100, '$')
account_2 = BankAccount('In dollars', 10, '$')
with self.assertRaises(ValueError):
account_1.transfer_to(account_2, -50)
self.assertEqual(account_1.balance(), 100)
self.assertEqual(account_2.balance(), 10)
def test_transfer_between_different_currencies_not_possible(self):
leva_account = BankAccount('For testing', 100, 'BGN')
dollar_account = BankAccount('In dollars', 10, '$')
with self.assertRaises(TypeError):
leva_account.transfer_to(dollar_account, 50)
self.assertEqual(leva_account.balance(), 100)
self.assertEqual(dollar_account.balance(), 10)
class TestBankAccount_transfer_to(unittest.TestCase):
'''
It is also possible to create test classes that test a single
method. In this case we want a separate class for testing the
BankAccount.transfer_to() method because there are several
scenarios and we want to better organize them.
'''
def setUp(self):
self.account = BankAccount('For testing', 100, 'BGN')
def test_transfer_to_without_parameters(self):
# raises when other account is missing
with self.assertRaises(TypeError):
self.account.transfer_to(1)
# can be written as
self.assertRaises(TypeError, self.account.transfer_to, 1)
# raises when how_miuch is missing
other_account = BankAccount('with zero balance', 0, '$')
with self.assertRaises(TypeError):
self.account.transfer_to(other_account)
# this is not necessary ????
self.assertEqual(other_account.balance(), 0)
self.assertEqual(self.account.balance(), 100)
def test_transfer_between_different_currencies_not_possible(self):
leva_account = BankAccount('For testing', 100, 'BGN')
dollar_account = BankAccount('In dollars', 10, '$')
with self.assertRaises(TypeError):
leva_account.transfer_to(dollar_account, 50)
self.assertEqual(leva_account.balance(), 100)
self.assertEqual(dollar_account.balance(), 10)
def test_transfer_negative_amount(self):
account_1 = BankAccount('For testing', 100, '$')
account_2 = BankAccount('In dollars', 10, '$')
with self.assertRaises(ValueError):
account_1.transfer_to(account_2, -50)
self.assertEqual(account_1.balance(), 100)
self.assertEqual(account_2.balance(), 10)
def test_transfer_positive_mount_should_work(self):
account_1 = BankAccount('For testing', 100, '$')
account_2 = BankAccount('In dollars', 10, '$')
account_1.transfer_to(account_2, 50)
self.assertEqual(account_1.balance(), 50)
self.assertEqual(account_2.balance(), 60)
def test_transfer_more_than_vailable_balance_should_fail(self):
account_1 = BankAccount('For testing', 100, '$')
account_2 = BankAccount('In dollars', 10, '$')
with self.assertRaises(Exception):
account_1.transfer_to(account_2, 150)
self.assertEqual(account_1.balance(), 100)
self.assertEqual(account_2.balance(), 10)
