public void GiveApplyWhenCartItemQuantityThresholdNotMetThenReturnCorrectly()
{
var discount = 28m;
var cartItem = new CartItem(new Item()
{
Sku = "1", UnitPrice = 10.00m
}, 3);
var sut = new QuantityForSetPricePromotion(4, discount);
sut.Apply(cartItem, _calculate);
cartItem.LineTotal.Should().Be(30.00m);
}
public void GiveApplyWhenCalledThenReturnCorrectly(decimal unitPrice, int cartItemQuantity, decimal discount,
int quantityAppliedAt, decimal expectedTotal)
{
var cartItem = new CartItem(new Item()
{
Sku = "1", UnitPrice = unitPrice
}, cartItemQuantity);
var sut = new QuantityForSetPricePromotion(quantityAppliedAt, discount);
sut.Apply(cartItem, _calculate);
cartItem.LineTotal.Should().Be(expectedTotal);
}
public void GivenApplyWhenItemIsNullThenReturn()
{
var sut = new QuantityForSetPricePromotion(1, 1);
Assert.Throws <ArgumentNullException>(() => sut.Apply(null, null));
}
