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closes #212

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This commit is contained in:
jstaerk
2020-12-26 11:37:58 +01:00
parent fe08c4d74d
commit 44a464bee3
5 changed files with 242 additions and 102 deletions
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2
History.md
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@@ -1,7 +1,7 @@
2.1.0 2.1.0
======= =======
- fixed a charge/allowance rounding error #212
- Corrected intra community supply tax exemption category code - Corrected intra community supply tax exemption category code
2.0.3 2.0.3

6
library/src/main/java/org/mustangproject/ZUGFeRD/TransactionCalculator.java
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@@ -127,10 +127,11 @@ public class TransactionCalculator implements IAbsoluteValueProvider {
* @return item sum * @return item sum
*/ */
protected BigDecimal getTotal() { protected BigDecimal getTotal() {
return Stream.of(trans.getZFItems()) BigDecimal dec = Stream.of(trans.getZFItems())
.map(LineCalculator::new) .map(LineCalculator::new)
.map(LineCalculator::getItemTotalNetAmount) .map(LineCalculator::getItemTotalNetAmount)
.reduce(ZERO, BigDecimal::add); .reduce(ZERO, BigDecimal::add);
return dec;
} }
/*** /***
@@ -139,8 +140,7 @@ public class TransactionCalculator implements IAbsoluteValueProvider {
* @return item sum +- charges/allowances * @return item sum +- charges/allowances
*/ */
protected BigDecimal getTaxBasis() { protected BigDecimal getTaxBasis() {
BigDecimal res = getTotal().add(getChargesForPercent(null)).subtract(getAllowancesForPercent(null)); return getTotal().add(getChargesForPercent(null).setScale(2, RoundingMode.HALF_UP)).subtract(getAllowancesForPercent(null).setScale(2, RoundingMode.HALF_UP)).setScale(2, RoundingMode.HALF_UP);
return res.setScale(2, RoundingMode.HALF_UP);
} }
/** /**

3
library/src/main/java/org/mustangproject/ZUGFeRD/VATAmount.java
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@@ -19,6 +19,7 @@
package org.mustangproject.ZUGFeRD; package org.mustangproject.ZUGFeRD;
import java.math.BigDecimal; import java.math.BigDecimal;
import java.math.RoundingMode;
/** /**
* Mustangproject's ZUGFeRD implementation * Mustangproject's ZUGFeRD implementation
@@ -55,7 +56,7 @@ public class VATAmount {
} }
public void setBasis(BigDecimal basis) { public void setBasis(BigDecimal basis) {
this.basis = basis; this.basis = basis.setScale(2, RoundingMode.HALF_UP);
} }

202
library/src/test/java/org/mustangproject/ZUGFeRD/CalculationTest.java Normal file
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@@ -0,0 +1,202 @@
package org.mustangproject.ZUGFeRD;
import static java.math.BigDecimal.TEN;
import static java.math.BigDecimal.valueOf;
import static org.junit.Assert.assertEquals;
import org.junit.Test;
import org.mustangproject.*;
import java.math.BigDecimal;
import java.text.SimpleDateFormat;
import java.util.logging.Level;
import java.util.logging.Logger;
/***
* tests the linecalculator and transactioncalculator classes
*
*/
public class CalculationTest {
@Test
public void testLineCalculator_simpleAmounts_resultInValidVATAmount() {
final IZUGFeRDExportableProduct product = new IZUGFeRDExportableProductImpl().setVatPercent(valueOf(16));
final IZUGFeRDExportableItem currentItem = new IZUGFeRDExportableItemImpl().setPrice(valueOf(100))
.setQuantity(TEN)
.setProduct(product);
final LineCalculator calculator = new LineCalculator(currentItem);
assertEquals(valueOf(100).stripTrailingZeros(), calculator.getPrice().stripTrailingZeros());
assertEquals(valueOf(1000).stripTrailingZeros(), calculator.getItemTotalNetAmount().stripTrailingZeros());
assertEquals(valueOf(160).stripTrailingZeros(), calculator.getItemTotalVATAmount().stripTrailingZeros());
}
@Test
public void testLineCalculatorInclusiveAllowance() {
//This test failed with previous implementation. By rounding the totalVATAmount to 2 decimal places the result became wrong
final IZUGFeRDExportableProduct product = new IZUGFeRDExportableProductImpl().setVatPercent(valueOf(16));
// 10 % discount on each item
final IZUGFeRDAllowanceCharge allowance = new IZUGFeRDAllowanceChargeImpl().setTotalAmount(valueOf(14.8730));
final IZUGFeRDExportableItem currentItem = new IZUGFeRDExportableItemImpl().setPrice(valueOf(148.73))
.setQuantity(valueOf(12))
.setItemAllowances(new IZUGFeRDAllowanceCharge[]{allowance})
.setProduct(product);
final LineCalculator calculator = new LineCalculator(currentItem);
assertEquals(valueOf(133.857).stripTrailingZeros(), calculator.getPrice().stripTrailingZeros());
assertEquals(valueOf(1606.28).stripTrailingZeros(), calculator.getItemTotalNetAmount().stripTrailingZeros());
assertEquals(valueOf(257.0048).stripTrailingZeros(), calculator.getItemTotalVATAmount().stripTrailingZeros());
}
@Test
public void testLineCalculatorInclusiveAllowanceAndCharge() {
final IZUGFeRDExportableProduct product = new IZUGFeRDExportableProductImpl().setVatPercent(valueOf(16));
// 10 % discount on each item
final IZUGFeRDAllowanceCharge allowance = new IZUGFeRDAllowanceChargeImpl().setTotalAmount(valueOf(14.873));
// 20 % charge
final IZUGFeRDAllowanceCharge charge = new IZUGFeRDAllowanceChargeImpl().setTotalAmount(valueOf(29.746));
final IZUGFeRDExportableItem currentItem = new IZUGFeRDExportableItemImpl().setPrice(valueOf(148.73))
.setQuantity(valueOf(12))
.setItemAllowances(new IZUGFeRDAllowanceCharge[]{allowance})
.setItemCharges(new IZUGFeRDAllowanceCharge[]{charge})
.setProduct(product);
final LineCalculator calculator = new LineCalculator(currentItem);
assertEquals(valueOf(163.603).stripTrailingZeros(), calculator.getPrice().stripTrailingZeros());
assertEquals(valueOf(1963.24).stripTrailingZeros(), calculator.getItemTotalNetAmount().stripTrailingZeros());
assertEquals(valueOf(314.1184).stripTrailingZeros(), calculator.getItemTotalVATAmount().stripTrailingZeros());
}
@Test
public void testTotalCalculatorGrandTotalRounding() {
SimpleDateFormat sqlDate = new SimpleDateFormat("yyyy-MM-dd");
BigDecimal sales_tax_percent1 = new BigDecimal(16);
BigDecimal total_increase_percent = new BigDecimal(0.80);
BigDecimal total_discount_percent = new BigDecimal(2.00);
/* invoice (1st part) */
Invoice invoice = new Invoice();
invoice.setDocumentName("Rechnung");
invoice.setNumber("777777");
try {
invoice.setIssueDate(sqlDate.parse("2020-12-31"));
invoice.setDetailedDeliveryPeriod(sqlDate.parse("2020-12-01 - 2020-12-31".split(" - ")[0]), sqlDate.parse("2020-12-01 - 2020-12-31".split(" - ")[1]));
invoice.setDeliveryDate(sqlDate.parse("2020-12-31"));
invoice.setDueDate(sqlDate.parse("2021-01-15"));
} catch (Exception e) {
Logger.getLogger(CalculationTest.class.getName()).log(Level.SEVERE, null, e);
}
/* trade party (sender) */
TradeParty sender = new TradeParty("Maier GmbH", "Musterweg 5", "11111", "Testung", "DE");
sender.addVATID("DE2222222222");
invoice.setSender(sender);
/* trade party (recipient) */
TradeParty recipient = new TradeParty("Teston GmbH" + " " + "Zentrale" + " " + "", "Testweg 5", "11111", "Testung", "DE");
recipient.setID("111111");
recipient.addVATID("DE111111111");
invoice.setRecipient(recipient);
/* item */
Product product;
Item item;
BigDecimal item_increase = BigDecimal.ZERO;
BigDecimal item_discount = BigDecimal.ZERO;
product = new Product("AAA", "", "H84", sales_tax_percent1).setSellerAssignedID("1AAA");
item = new Item(product, new BigDecimal("4.750"), new BigDecimal(5.00));
item_discount = new BigDecimal("10.00");
if (item_increase.compareTo(BigDecimal.ZERO) > 0) {
item.addCharge(new Charge().setPercent(item_increase).setTaxPercent(sales_tax_percent1).setCategoryCode("ZZZ").setReason("Zuschlag"));
}
if (item_discount.compareTo(BigDecimal.ZERO) > 0) {
item.addAllowance(new Allowance().setPercent(item_discount).setTaxPercent(sales_tax_percent1).setCategoryCode("95").setReason("Rabatt"));
}
invoice.addItem(item);
product = new Product("BBB", "", "H84", sales_tax_percent1).setSellerAssignedID("2BBB");
item = new Item(product, new BigDecimal("5.750"), new BigDecimal(4.00));
item_discount = BigDecimal.ZERO;
if (item_increase.compareTo(BigDecimal.ZERO) > 0) {
item.addCharge(new Charge().setPercent(item_increase).setTaxPercent(sales_tax_percent1).setCategoryCode("ZZZ").setReason("Zuschlag"));
}
if (item_discount.compareTo(BigDecimal.ZERO) > 0) {
item.addAllowance(new Allowance().setPercent(item_discount).setTaxPercent(sales_tax_percent1).setCategoryCode("95").setReason("Rabatt"));
}
invoice.addItem(item);
product = new Product("CCC", "", "H84", sales_tax_percent1).setSellerAssignedID("3CCC");
item = new Item(product, new BigDecimal("6.750"), new BigDecimal(3.00));
item_discount = new BigDecimal("10.00");
if (item_increase.compareTo(BigDecimal.ZERO) > 0) {
item.addCharge(new Charge().setPercent(item_increase).setTaxPercent(sales_tax_percent1).setCategoryCode("ZZZ").setReason("Zuschlag"));
}
if (item_discount.compareTo(BigDecimal.ZERO) > 0) {
item.addAllowance(new Allowance().setPercent(item_discount).setTaxPercent(sales_tax_percent1).setCategoryCode("95").setReason("Rabatt"));
}
invoice.addItem(item);
product = new Product("DDD", "", "H84", sales_tax_percent1).setSellerAssignedID("4DDD");
item = new Item(product, new BigDecimal("7.750"), new BigDecimal(2.00));
item_discount = BigDecimal.ZERO;
if (item_increase.compareTo(BigDecimal.ZERO) > 0) {
item.addCharge(new Charge().setPercent(item_increase).setTaxPercent(sales_tax_percent1).setCategoryCode("ZZZ").setReason("Zuschlag"));
}
if (item_discount.compareTo(BigDecimal.ZERO) > 0) {
item.addAllowance(new Allowance().setPercent(item_discount).setTaxPercent(sales_tax_percent1).setCategoryCode("95").setReason("Rabatt"));
}
invoice.addItem(item);
product = new Product("EEE", "", "H84", sales_tax_percent1).setSellerAssignedID("5EEE");
item = new Item(product, new BigDecimal("8.750"), new BigDecimal(1.00));
item_discount = BigDecimal.ZERO;
if (item_increase.compareTo(BigDecimal.ZERO) > 0) {
item.addCharge(new Charge().setPercent(item_increase).setTaxPercent(sales_tax_percent1).setCategoryCode("ZZZ").setReason("Zuschlag"));
}
if (item_discount.compareTo(BigDecimal.ZERO) > 0) {
item.addAllowance(new Allowance().setPercent(item_discount).setTaxPercent(sales_tax_percent1).setCategoryCode("95").setReason("Rabatt"));
}
invoice.addItem(item);
if (total_increase_percent.compareTo(BigDecimal.ZERO) > 0) {
invoice.addCharge(new Charge().setPercent(total_increase_percent).setTaxPercent(sales_tax_percent1).setCategoryCode("ZZZ").setReason("Zuschläge"));
}
if (total_discount_percent.compareTo(BigDecimal.ZERO) > 0) {
invoice.addAllowance(new Allowance().setPercent(total_discount_percent).setTaxPercent(sales_tax_percent1).setCategoryCode("95").setReason("Rabatte"));
}
TransactionCalculator calculator = new TransactionCalculator(invoice);
assertEquals(valueOf(99.54).stripTrailingZeros(), calculator.getGrandTotal().stripTrailingZeros());
}
}

63
library/src/test/java/org/mustangproject/ZUGFeRD/LineCalculatorTest.java
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@@ -1,63 +0,0 @@
package org.mustangproject.ZUGFeRD;
import static java.math.BigDecimal.TEN;
import static java.math.BigDecimal.valueOf;
import static org.junit.Assert.assertEquals;
import org.junit.Test;
public class LineCalculatorTest {
@Test
public void testLineCalculator_simpleAmounts_resultInValidVATAmount() {
final IZUGFeRDExportableProduct product = new IZUGFeRDExportableProductImpl().setVatPercent(valueOf(16));
final IZUGFeRDExportableItem currentItem = new IZUGFeRDExportableItemImpl().setPrice(valueOf(100))
.setQuantity(TEN)
.setProduct(product);
final LineCalculator calculator = new LineCalculator(currentItem);
assertEquals(valueOf(100).stripTrailingZeros(), calculator.getPrice().stripTrailingZeros());
assertEquals(valueOf(1000).stripTrailingZeros(), calculator.getItemTotalNetAmount().stripTrailingZeros());
assertEquals(valueOf(160).stripTrailingZeros(), calculator.getItemTotalVATAmount().stripTrailingZeros());
}
@Test
public void testLineCalculatorInclusiveAllowance() {
//This test failed with previous implementation. By rounding the totalVATAmount to 2 decimal places the result became wrong
final IZUGFeRDExportableProduct product = new IZUGFeRDExportableProductImpl().setVatPercent(valueOf(16));
// 10 % discount on each item
final IZUGFeRDAllowanceCharge allowance = new IZUGFeRDAllowanceChargeImpl().setTotalAmount(valueOf(14.8730));
final IZUGFeRDExportableItem currentItem = new IZUGFeRDExportableItemImpl().setPrice(valueOf(148.73))
.setQuantity(valueOf(12))
.setItemAllowances(new IZUGFeRDAllowanceCharge[] { allowance })
.setProduct(product);
final LineCalculator calculator = new LineCalculator(currentItem);
assertEquals(valueOf(133.857).stripTrailingZeros(), calculator.getPrice().stripTrailingZeros());
assertEquals(valueOf(1606.28).stripTrailingZeros(), calculator.getItemTotalNetAmount().stripTrailingZeros());
assertEquals(valueOf(257.0048).stripTrailingZeros(), calculator.getItemTotalVATAmount().stripTrailingZeros());
}
@Test
public void testLineCalculatorInclusiveAllowanceAndCharge() {
final IZUGFeRDExportableProduct product = new IZUGFeRDExportableProductImpl().setVatPercent(valueOf(16));
// 10 % discount on each item
final IZUGFeRDAllowanceCharge allowance = new IZUGFeRDAllowanceChargeImpl().setTotalAmount(valueOf(14.873));
// 20 % charge
final IZUGFeRDAllowanceCharge charge = new IZUGFeRDAllowanceChargeImpl().setTotalAmount(valueOf(29.746));
final IZUGFeRDExportableItem currentItem = new IZUGFeRDExportableItemImpl().setPrice(valueOf(148.73))
.setQuantity(valueOf(12))
.setItemAllowances(new IZUGFeRDAllowanceCharge[] { allowance })
.setItemCharges(new IZUGFeRDAllowanceCharge[] { charge })
.setProduct(product);
final LineCalculator calculator = new LineCalculator(currentItem);
assertEquals(valueOf(163.603).stripTrailingZeros(), calculator.getPrice().stripTrailingZeros());
assertEquals(valueOf(1963.24).stripTrailingZeros(), calculator.getItemTotalNetAmount().stripTrailingZeros());
assertEquals(valueOf(314.1184).stripTrailingZeros(), calculator.getItemTotalVATAmount().stripTrailingZeros());
}
}