| Quellcodebibliothek Statistik Leitseite products/Sources/formale Sprachen/Java/Openjdk/test/jdk/java/lang/ (Sun/Oracle ©) Datei vom 13.11.2022 mit Größe 6 kB |
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Quelle PrimitiveSumMinMaxTest.java Sprache: JAVA |
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/*
* Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code 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 * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ import org.testng.annotations.Test; import java.util.Comparator; import java.util.function.BinaryOperator; import java.util.function.IntBinaryOperator; import static org.testng.Assert.assertEquals; import static org.testng.Assert.assertFalse; import static org.testng.Assert.assertTrue; import java.util.function.DoubleBinaryOperator; import java.util.function.LongBinaryOperator; /** * @test * @run testng PrimitiveSumMinMaxTest * @summary test conversion of primitive wrapper sum, min, max, and compareTo methods to functi * * @author Brian Goetz */ @Test public class PrimitiveSumMinMaxTest { public void testBooleanMethods() { BinaryOperator<Boolean> and = Boolean::logicalAnd; BinaryOperator<Boolean> or = Boolean::logicalOr; BinaryOperator<Boolean> xor = Boolean::logicalXor; Comparator<Boolean> cmp = Boolean::compare; assertTrue(and.apply(true, true)); assertFalse(and.apply(true, false)); assertFalse(and.apply(false, true)); assertFalse(and.apply(false, false)); assertTrue(or.apply(true, true)); assertTrue(or.apply(true, false)); assertTrue(or.apply(false, true)); assertFalse(or.apply(false, false)); assertFalse(xor.apply(true, true)); assertTrue(xor.apply(true, false)); assertTrue(xor.apply(false, true)); assertFalse(xor.apply(false, false)); assertEquals(Boolean.TRUE.compareTo(Boolean.TRUE), cmp.compare(true, true)); assertEquals(Boolean.TRUE.compareTo(Boolean.FALSE), cmp.compare(true, false)); assertEquals(Boolean.FALSE.compareTo(Boolean.TRUE), cmp.compare(false, true)); assertEquals(Boolean.FALSE.compareTo(Boolean.FALSE), cmp.compare(false, false)); }; public void testIntMethods() { BinaryOperator<Integer> sum1 = Integer::sum; IntBinaryOperator sum2 = Integer::sum; BinaryOperator<Integer> max1 = Integer::max; IntBinaryOperator max2 = Integer::max; BinaryOperator<Integer> min1 = Integer::min; IntBinaryOperator min2 = Integer::min; Comparator<Integer> cmp = Integer::compare; int[] numbers = { -1, 0, 1, 100, Integer.MAX_VALUE, Integer.MIN_VALUE }; for (int i : numbers) { for (int j : numbers) { assertEquals(i+j, (int) sum1.apply(i, j)); assertEquals(i+j, sum2.applyAsInt(i, j)); assertEquals(Math.max(i,j), (int) max1.apply(i, j)); assertEquals(Math.max(i,j), max2.applyAsInt(i, j)); assertEquals(Math.min(i,j), (int) min1.apply(i, j)); assertEquals(Math.min(i,j), min2.applyAsInt(i, j)); assertEquals(((Integer) i).compareTo(j), cmp.compare(i, j)); } } } public void testLongMethods() { BinaryOperator<Long> sum1 = Long::sum; LongBinaryOperator sum2 = Long::sum; BinaryOperator<Long> max1 = Long::max; LongBinaryOperator max2 = Long::max; BinaryOperator<Long> min1 = Long::min; LongBinaryOperator min2 = Long::min; Comparator<Long> cmp = Long::compare; long[] numbers = { -1, 0, 1, 100, Long.MAX_VALUE, Long.MIN_VALUE }; for (long i : numbers) { for (long j : numbers) { assertEquals(i+j, (long) sum1.apply(i, j)); assertEquals(i+j, sum2.applyAsLong(i, j)); assertEquals(Math.max(i,j), (long) max1.apply(i, j)); assertEquals(Math.max(i,j), max2.applyAsLong(i, j)); assertEquals(Math.min(i,j), (long) min1.apply(i, j)); assertEquals(Math.min(i,j), min2.applyAsLong(i, j)); assertEquals(((Long) i).compareTo(j), cmp.compare(i, j)); } } } public void testFloatMethods() { BinaryOperator<Float> sum1 = Float::sum; BinaryOperator<Float> max1 = Float::max; BinaryOperator<Float> min1 = Float::min; Comparator<Float> cmp = Float::compare; float[] numbers = { -1, 0, 1, 100, Float.MAX_VALUE, Float.MIN_VALUE }; for (float i : numbers) { for (float j : numbers) { assertEquals(i+j, (float) sum1.apply(i, j)); assertEquals(Math.max(i,j), (float) max1.apply(i, j)); assertEquals(Math.min(i,j), (float) min1.apply(i, j)); assertEquals(((Float) i).compareTo(j), cmp.compare(i, j)); } } } public void testDoubleMethods() { BinaryOperator<Double> sum1 = Double::sum; DoubleBinaryOperator sum2 = Double::sum; BinaryOperator<Double> max1 = Double::max; DoubleBinaryOperator max2 = Double::max; BinaryOperator<Double> min1 = Double::min; DoubleBinaryOperator min2 = Double::min; Comparator<Double> cmp = Double::compare; double[] numbers = { -1, 0, 1, 100, Double.MAX_VALUE, Double.MIN_VALUE }; for (double i : numbers) { for (double j : numbers) { assertEquals(i+j, (double) sum1.apply(i, j)); assertEquals(i+j, sum2.applyAsDouble(i, j)); assertEquals(Math.max(i,j), (double) max1.apply(i, j)); assertEquals(Math.max(i,j), max2.applyAsDouble(i, j)); assertEquals(Math.min(i,j), (double) min1.apply(i, j)); assertEquals(Math.min(i,j), min2.applyAsDouble(i, j)); assertEquals(((Double) i).compareTo(j), cmp.compare(i, j)); } } } } ¤ Dauer der Verarbeitung: 0.12 Sekunden (vorverarbeitet) ¤*© Formatika GbR, Deutschland |
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2026-03-28