Java tutorial
/** * This file is part of alf.io. * * alf.io is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * alf.io is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with alf.io. If not, see <http://www.gnu.org/licenses/>. */ package alfio.model; import alfio.test.util.PriceContainerImpl; import alfio.util.MonetaryUtil; import org.apache.commons.lang3.tuple.Pair; import org.junit.Test; import java.math.BigDecimal; import java.math.RoundingMode; import java.util.List; import java.util.stream.Collectors; import java.util.stream.IntStream; import java.util.stream.Stream; import static org.junit.Assert.assertEquals; import static org.junit.Assert.fail; import static org.mockito.Mockito.mock; import static org.mockito.Mockito.when; public class PriceContainerTest { @Test public void getFinalPriceInputDoNotApplyVat() throws Exception { Stream.of(PriceContainer.VatStatus.INCLUDED, PriceContainer.VatStatus.NONE).forEach(vatStatus -> { PriceContainerImpl vs = new PriceContainerImpl(1000, "CHF", new BigDecimal("30.00"), vatStatus); assertEquals(new BigDecimal("10.00"), vs.getFinalPrice()); PromoCodeDiscount promoCodeDiscount = mock(PromoCodeDiscount.class); when(promoCodeDiscount.getDiscountAmount()).thenReturn(100, 10); when(promoCodeDiscount.getFixedAmount()).thenReturn(true, false); when(promoCodeDiscount.getDiscountType()).thenReturn(PromoCodeDiscount.DiscountType.FIXED_AMOUNT, PromoCodeDiscount.DiscountType.PERCENTAGE); vs = new PriceContainerImpl(1100, "CHF", new BigDecimal("30.00"), vatStatus, promoCodeDiscount); assertEquals(String.format("vatStatus: %s", vatStatus.name()), new BigDecimal("10.00"), vs.getFinalPrice()); vs = new PriceContainerImpl(1000, "CHF", new BigDecimal("30.00"), vatStatus, promoCodeDiscount); assertEquals(String.format("vatStatus: %s", vatStatus.name()), new BigDecimal("9.00"), vs.getFinalPrice()); }); } @Test public void getFinalPriceInputVatNotIncludedSingle() throws Exception { PriceContainerImpl vs = new PriceContainerImpl(1000, "CHF", new BigDecimal("30.00"), PriceContainer.VatStatus.NOT_INCLUDED); assertEquals(new BigDecimal("13.00"), vs.getFinalPrice()); PromoCodeDiscount promoCodeDiscount = mock(PromoCodeDiscount.class); when(promoCodeDiscount.getDiscountAmount()).thenReturn(100, 10); when(promoCodeDiscount.getFixedAmount()).thenReturn(true, false); when(promoCodeDiscount.getDiscountType()).thenReturn(PromoCodeDiscount.DiscountType.FIXED_AMOUNT, PromoCodeDiscount.DiscountType.PERCENTAGE); vs = new PriceContainerImpl(1100, "CHF", new BigDecimal("8.00"), PriceContainer.VatStatus.NOT_INCLUDED, promoCodeDiscount); assertEquals(new BigDecimal("10.80"), vs.getFinalPrice()); vs = new PriceContainerImpl(1000, "CHF", new BigDecimal("10.00"), PriceContainer.VatStatus.NOT_INCLUDED, promoCodeDiscount); assertEquals(new BigDecimal("9.90"), vs.getFinalPrice()); } @Test public void getFinalPriceInputVatNotIncludedExemptSingle() { PriceContainerImpl vs = new PriceContainerImpl(1000, "CHF", new BigDecimal("30.00"), PriceContainer.VatStatus.NOT_INCLUDED_EXEMPT); assertEquals(new BigDecimal("10.00"), vs.getFinalPrice()); PromoCodeDiscount promoCodeDiscount = mock(PromoCodeDiscount.class); when(promoCodeDiscount.getDiscountAmount()).thenReturn(100, 10); when(promoCodeDiscount.getFixedAmount()).thenReturn(true, false); when(promoCodeDiscount.getDiscountType()).thenReturn(PromoCodeDiscount.DiscountType.FIXED_AMOUNT, PromoCodeDiscount.DiscountType.PERCENTAGE); vs = new PriceContainerImpl(1100, "CHF", new BigDecimal("8.00"), PriceContainer.VatStatus.NOT_INCLUDED_EXEMPT, promoCodeDiscount); assertEquals(new BigDecimal("10.00"), vs.getFinalPrice()); vs = new PriceContainerImpl(1000, "CHF", new BigDecimal("10.00"), PriceContainer.VatStatus.NOT_INCLUDED_EXEMPT, promoCodeDiscount); assertEquals(new BigDecimal("9.00"), vs.getFinalPrice()); } @Test public void getFinalPriceInputVatIncludedExemptSingle() { PriceContainerImpl vs = new PriceContainerImpl(1000, "CHF", new BigDecimal("30.00"), PriceContainer.VatStatus.INCLUDED_EXEMPT); assertEquals(new BigDecimal("7.69"), vs.getFinalPrice()); PromoCodeDiscount promoCodeDiscount = mock(PromoCodeDiscount.class); when(promoCodeDiscount.getDiscountAmount()).thenReturn(100, 10); when(promoCodeDiscount.getFixedAmount()).thenReturn(true, false); when(promoCodeDiscount.getDiscountType()).thenReturn(PromoCodeDiscount.DiscountType.FIXED_AMOUNT, PromoCodeDiscount.DiscountType.PERCENTAGE); vs = new PriceContainerImpl(1100, "CHF", new BigDecimal("8.00"), PriceContainer.VatStatus.INCLUDED_EXEMPT, promoCodeDiscount); assertEquals(new BigDecimal("9.26"), vs.getFinalPrice()); vs = new PriceContainerImpl(1000, "CHF", new BigDecimal("10.00"), PriceContainer.VatStatus.INCLUDED_EXEMPT, promoCodeDiscount); assertEquals(new BigDecimal("8.18"), vs.getFinalPrice()); } @Test public void getFinalPriceInputVatNotIncluded() throws Exception { generateTestStream(PriceContainer.VatStatus.NOT_INCLUDED).forEach(p -> { PriceContainer priceContainer = p.getRight(); BigDecimal finalPrice = priceContainer.getFinalPrice(); Integer price = p.getLeft(); BigDecimal netPrice = MonetaryUtil.centsToUnit(price); BigDecimal vatAmount = finalPrice.subtract(netPrice); int result = MonetaryUtil.unitToCents(vatAmount .subtract(MonetaryUtil.calcVat(netPrice, priceContainer.getVatPercentageOrZero())).abs()); if (result >= 2) { BigDecimal calcVatPerc = vatAmount.divide(finalPrice, 5, RoundingMode.HALF_UP) .multiply(new BigDecimal("100.00")).setScale(2, RoundingMode.HALF_UP); fail(String.format("Expected percentage: %s, got %s, vat %s v. %s", calcVatPerc, priceContainer.getOptionalVatPercentage(), vatAmount, MonetaryUtil.calcVat(netPrice, priceContainer.getVatPercentageOrZero()))); } }); } private Stream<Pair<Integer, PriceContainer>> generateTestStream(PriceContainer.VatStatus vatStatus) { List<BigDecimal> vatPercentages = IntStream.range(100, 3000).mapToObj( vatCts -> new BigDecimal(vatCts).divide(new BigDecimal("100.00"), 2, RoundingMode.UNNECESSARY)) .collect(Collectors.toList()); return IntStream.range(1, 500_00).parallel().boxed().flatMap(i -> vatPercentages.stream() .map(vat -> Pair.of(i, new PriceContainerImpl(i, "CHF", vat, vatStatus)))); } }