public void add_tax_to_total()
{
// arrange
var tax = new Amount(Currency.DKK, 25);
var expected = new Price(total, tax);
var fakeTaxStrategy = A.Fake<TaxCalculationStrategy>();
A.CallTo(fakeTaxStrategy).WithReturnType<Amount>().Returns(tax);
var sut = new PriceCalculator(fakeTaxStrategy);
var order = CreateOrder(sut, 25, isConsumer: true);
// act
var actual = order.CreateBill().Price;
// assert
Assert.Equal(expected, actual);
}
private static void CheckCurrencies(Amount lhs, Amount rhs)
{
if (lhs.currency != rhs.currency)
throw new Exception("incompatible currencies");
}
protected bool Equals(Amount other)
{
return amount.Equals(other.amount) && currency == other.currency;
}
public Price(Amount basePrice, Amount tax)
{
BasePrice = basePrice;
Tax = tax;
}
public StrategyExercise()
{
total = new Amount(Currency.DKK, 100);
}