def test_multiplication(self):
five_dollar = Money.dollar(5)
assert five_dollar.times(2) == Money.dollar(10)
assert five_dollar.times(3) == Money.dollar(15)
# Check currency with times() method
five_franc = Money.franc(5)
assert five_franc.times(2) == five_franc.times(2)
assert five_dollar.times(2) == five_dollar.times(2)
assert not five_franc.times(2) == five_dollar.times(2)
def test_currency(self):
assert "USD" == Money.dollar(1).get_currency()
assert "CHF" == Money.franc(1).get_currency()
def test_reduce_money_difference_currency(self):
bank = Bank()
bank.add_rate("CHF", "USD", 2)
result = bank.reduce(Money.franc(2), "USD")
assert Money.dollar(1) == result
def test_reduce_money(self):
bank = Bank()
result = bank.reduce(Money.dollar(1), "USD")
assert Money.dollar(1) == result
def test_reduce_sum(self):
summation = Sum(Money.dollar(3), Money.dollar(4))
bank = Bank()
result = bank.reduce(summation, "USD")
assert Money.dollar(7) == result
def test_plus_return_sum(self):
five_dollar = Money.dollar(5)
summation = five_dollar.plus(five_dollar)
assert isinstance(summation, Sum)
assert five_dollar == summation.augend
assert five_dollar == summation.addend
def test_equals(self):
assert Money.dollar(5).equals(Money.dollar(5))
assert not Money.dollar(5).equals(Money.dollar(6))
assert not Money.dollar(5).equals(Money.franc(5))
assert not Money.franc(5).equals(Money.dollar(5))