def test_mixed_addition(self):
five_bucks = Money.dollar(5)
ten_francs = Money.franc(10)
bank = Bank()
bank.add_rate('CHF', 'USD', 2)
result = bank.reduce(five_bucks.plus(ten_francs), 'USD')
self.assertEqual(result, Money.dollar(10))
def test_sum_times(self):
five_bucks = Money.dollar(5)
ten_francs = Money.franc(10)
bank = Bank()
bank.add_rate('CHF', 'USD', 2)
sum = Sum(five_bucks, ten_francs).times(2)
result = bank.reduce(sum, 'USD')
self.assertEqual(result, Money.dollar(20))
def test_identity_rate(self):
self.assertEqual(1, Bank().rate('USD', 'USD'))
def test_reduce_money_different_currency(self):
bank = Bank()
bank.add_rate('CHF', 'USD', 2)
result = bank.reduce(Money.franc(2), 'USD')
self.assertEqual(Money.dollar(1), result)
def test_reduce_money(self):
bank = Bank()
result = bank.reduce(Money.dollar(1), 'USD')
self.assertEqual(Money.dollar(1), result)
def test_reduce_sum(self):
sum = Sum(Money.dollar(3), Money.dollar(4))
bank = Bank()
result = bank.reduce(sum, 'USD')
self.assertEqual(Money.dollar(7), result)
def test_simple_addition(self):
five = Money.dollar(5)
sum = five.plus(five)
bank = Bank()
reduced = bank.reduce(sum, "USD")
self.assertEqual(Money.dollar(10), reduced)