public void Calculate_MultipleOrderItems_ShouldAddCorrectCharge()
{
// Arrange
var orderItem1 = _orderItemBuilder
.WithWeight(10)
.WithDutyRate(10)
.WithQuantity(1)
.Build();
var orderItem2 = _orderItemBuilder
.WithWeight(10)
.WithDutyRate(20)
.WithQuantity(2)
.Build();
var order = _orderBuilder.WithOrderItems(new List <OrderItem> {
orderItem1, orderItem2
}).Build();
var sut = new WeightBasedChargeCalculator(ChargeName, oi => oi.DutyRate);
// Act
sut.Calculate(order);
// Assert
orderItem1.Charges.Should()
.HaveCount(3).And
.ContainSingle(c => c.ChargeName.Value == ChargeName && c.ChargeAmount.Value == 1);
orderItem2.Charges.Should()
.HaveCount(3).And
.ContainSingle(c => c.ChargeName.Value == ChargeName && c.ChargeAmount.Value == 4);
}
