101 lines
3.1 KiB
Java
101 lines
3.1 KiB
Java
/*
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* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 8024500
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* @run testng BiFunctionTest
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*/
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import java.util.function.BiFunction;
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import java.util.function.Function;
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import org.testng.annotations.Test;
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import static org.testng.Assert.assertEquals;
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import static org.testng.Assert.fail;
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@Test(groups = "unit")
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public class BiFunctionTest {
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static class Quote {
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double unit_price;
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Quote(double price) {
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unit_price = price;
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}
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};
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static class Order {
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int quantity;
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Order(int quantity) {
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this.quantity = quantity;
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}
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};
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BiFunction<Quote, Order, Double> estimate = (quote, order) -> {
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if (quote.unit_price < 0) {
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throw new IllegalArgumentException("quote");
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}
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if (order.quantity < 0) {
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throw new IllegalArgumentException("order");
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}
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return quote.unit_price * order.quantity;
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};
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Function<Double, Long> creditcheck = total -> {
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if (total > 100.00) {
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throw new RuntimeException("overlimit");
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}
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return total.longValue();
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};
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public void testAndThen() {
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try {
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BiFunction<Quote, Order, Long> checkout = estimate.andThen(null);
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fail("Null argument should throw NPE");
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} catch (NullPointerException npe) {
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// ignore
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}
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BiFunction<Quote, Order, Long> checkout = estimate.andThen(creditcheck);
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try {
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checkout.apply(new Quote(20.0), new Order(-1));
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fail("First function delivers exception");
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} catch (IllegalArgumentException e) {
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assertEquals(e.getMessage(), "order");
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}
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try {
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checkout.apply(new Quote(20.0), new Order(10));
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fail("Second function delivers exception");
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} catch (RuntimeException e) {
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assertEquals(e.getMessage(), "overlimit");
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}
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assertEquals(49, checkout.apply(new Quote(24.99), new Order(2)).longValue());
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assertEquals(50, checkout.apply(new Quote(25), new Order(2)).longValue());
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}
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}
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