public void CalculateAdditionalChargesForWeight_OverLimit_CalculatesCorrectValues(ParcelSize parcelSize, decimal parcelWeight, decimal additionalCharge)
{
// Arrange
var parcel = new Parcel(parcelSize, parcelWeight);
// Act
var result = parcel.CalculateAdditionalChargesForWeight();
// Assert
Assert.Equal(additionalCharge, result);
}