public void Test_that_price_is_calculated_correctly()
{
// Arrange
var priceExpected = 153.6M;
var equipments = new List <Equipment> {
new Equipment {
PriceEuro = 10
},
new Equipment {
PriceEuro = 15
}
};
var rims = new Rims {
PriceEuro = 12
};
var varnish = new Varnish {
PriceEuro = 16.6M
};
// Act
var priceActual = _service.CalculatePrice(Currency.Euro, equipments, rims, varnish, 20);
// Assert
Assert.AreEqual(priceExpected, priceActual);
}
public decimal CalculatePrice(Currency currency, IEnumerable <Equipment> equipments = null, Rims rims = null, Varnish varnish = null, int?enginePower = null)
{
var equipmentPrice = equipments?.Sum(_ => currency == Currency.Euro ? _.PriceEuro : _.PricePound) ?? decimal.Zero;
var rimsesPrice = (currency == Currency.Euro ? rims?.PriceEuro : rims?.PricePound) ?? decimal.Zero;
var varnishesPrice = (currency == Currency.Euro ? varnish?.PriceEuro : varnish?.PricePound) ?? decimal.Zero;
var engingePowerPrice = (enginePower ?? 0) * (currency == Currency.Euro ? 5 : 4);
return(equipmentPrice + rimsesPrice + varnishesPrice + engingePowerPrice);
}