public void VisitBasketTotalReturnsCorrectResult(
int rate,
int amount)
{
var sut = new VatVisitor(rate, amount);
var actual = sut.Visit(new BasketTotal(42));
var v = Assert.IsAssignableFrom <VatVisitor>(actual);
Assert.Equal(rate, v.Rate);
Assert.Equal(amount, v.Amount);
}
public void VisitDiscountReturnsCorrectResult(
int rate,
int amount,
int discountAmount)
{
var sut = new VatVisitor(rate, amount);
var actual = sut.Visit(new Discount(discountAmount));
var v = Assert.IsAssignableFrom <VatVisitor>(actual);
Assert.Equal(rate, v.Rate);
Assert.Equal(
amount - discountAmount * rate,
v.Amount);
}
public void VisitBasketItemReturnsCorrectResult(
int rate,
int amount,
int unitPrice,
int quantity)
{
var sut = new VatVisitor(rate, amount);
var basketItem =
new BasketItem("Dummy", unitPrice, quantity);
var actual = sut.Visit(basketItem);
var v = Assert.IsAssignableFrom <VatVisitor>(actual);
Assert.Equal(
amount + basketItem.Total * rate,
v.Amount);
Assert.Equal(rate, v.Rate);
}