public void TestMixedAddition()
{
IMoneyExpression fiveBucks = Money.Dollar(5);
IMoneyExpression tenFrancs = Money.Franc(10);
Bank bank = new Bank();
bank.AddRate("CHF", "USD", 2);
Money result = bank.Reduce(fiveBucks.Plus(tenFrancs), "USD");
Assert.Equal(Money.Dollar(10), result);
}
public void sum_of_two_franc_with_one_dollar__equals_to_two_dollar() // 2 CHF + 1 USD = 2 USD
{
IMoneyExpression franc = Money.Franc(2);
IMoneyExpression dollar = Money.Dollar(1);
var bank = new Bank();
bank.AddRate("USD", "CHF", 2);
bank.AddRate("CHF", "USD", 0.5m);
var reducedAmount = bank.Reduce(dollar.Plus(franc), "USD");
var expected = Money.Dollar(2);
reducedAmount.Should().Be(expected);
}