public void when_product_price_is_changed_subtotal_should_remain_consistent()
 {
     var momogi = Samples.Momogi;
     var sli = new SaleLineItem(Samples.Momogi, 2);
     Assert.AreEqual(1000m, sli.GetSubtotal());
     momogi.UnitPrice = 0;
     Assert.AreEqual(1000m, sli.GetSubtotal());
 }
 public void sli_with_momogi_2_should_subtotaled_1000()
 {
     var sli = new SaleLineItem(Samples.Momogi, 2);
     Assert.AreEqual(1000m, sli.GetSubtotal());
 }