--- /dev/null 2012-11-29 07:20:37.418324429 -0800 +++ new/test/java/lang/PrimitiveSumMinMaxTest.java 2012-11-29 17:05:27.788724015 -0800 @@ -0,0 +1,213 @@ +/* + * Copyright (c) 2012, 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. Oracle designates this + * particular file as subject to the "Classpath" exception as provided + * by Oracle in the LICENSE file that accompanied this code. + * + * 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 functional interfaces + * + * @author Brian Goetz + */ +@Test +public class PrimitiveSumMinMaxTest { + + public void testBooleanMethods() { + BinaryOperator and = Boolean::and; + BinaryOperator or = Boolean::or; + BinaryOperator xor = Boolean::xor; + Comparator cmp = Boolean::compare; + + assertTrue(and.operate(true, true)); + assertFalse(and.operate(true, false)); + assertFalse(and.operate(false, true)); + assertFalse(and.operate(false, false)); + + assertTrue(or.operate(true, true)); + assertTrue(or.operate(true, false)); + assertTrue(or.operate(false, true)); + assertFalse(or.operate(false, false)); + + assertFalse(xor.operate(true, true)); + assertTrue(xor.operate(true, false)); + assertTrue(xor.operate(false, true)); + assertFalse(xor.operate(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 testByteMethods() { + BinaryOperator sum1 = Byte::sum; + BinaryOperator max1 = Byte::max; + BinaryOperator min1 = Byte::min; + Comparator cmp = Byte::compare; + + byte[] numbers = { -1, 0, 1, 100, Byte.MAX_VALUE, Byte.MIN_VALUE }; + for (byte i : numbers) { + for (byte j : numbers) { + assertEquals((byte) (i+j), (byte) sum1.operate(i, j)); + assertEquals(Math.max(i,j), (byte) max1.operate(i, j)); + assertEquals(Math.min(i,j), (byte) min1.operate(i, j)); + assertEquals(((Byte) i).compareTo(j), cmp.compare(i, j)); + } + } + } + + public void testCharacterMethods() { + BinaryOperator sum1 = Character::sum; + BinaryOperator max1 = Character::max; + BinaryOperator min1 = Character::min; + Comparator cmp = Character::compare; + + char[] numbers = { (char) -1, 0, 1, 100, Character.MAX_VALUE, Character.MIN_VALUE }; + for (char i : numbers) { + for (char j : numbers) { + assertEquals((char) (i+j), (char) sum1.operate(i, j)); + assertEquals(Math.max(i,j), (char) max1.operate(i, j)); + assertEquals(Math.min(i,j), (char) min1.operate(i, j)); + assertEquals(((Character) i).compareTo(j), cmp.compare(i, j)); + } + } + } + + public void testShortMethods() { + BinaryOperator sum1 = Short::sum; + BinaryOperator max1 = Short::max; + BinaryOperator min1 = Short::min; + Comparator cmp = Short::compare; + + short[] numbers = { -1, 0, 1, 100, Short.MAX_VALUE, Short.MIN_VALUE }; + for (short i : numbers) { + for (short j : numbers) { + assertEquals((short) (i+j), (short) sum1.operate(i, j)); + assertEquals(Math.max(i,j), (short) max1.operate(i, j)); + assertEquals(Math.min(i,j), (short) min1.operate(i, j)); + assertEquals(((Short) i).compareTo(j), cmp.compare(i, j)); + } + } + } + + public void testIntMethods() { + BinaryOperator sum1 = Integer::sum; + IntBinaryOperator sum2 = Integer::sum; + BinaryOperator max1 = Integer::max; + IntBinaryOperator max2 = Integer::max; + BinaryOperator min1 = Integer::min; + IntBinaryOperator min2 = Integer::min; + Comparator 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.operate(i, j)); + assertEquals(i+j, sum2.operateAsInt(i, j)); + assertEquals(Math.max(i,j), (int) max1.operate(i, j)); + assertEquals(Math.max(i,j), max2.operateAsInt(i, j)); + assertEquals(Math.min(i,j), (int) min1.operate(i, j)); + assertEquals(Math.min(i,j), min2.operateAsInt(i, j)); + assertEquals(((Integer) i).compareTo(j), cmp.compare(i, j)); + } + } + } + + public void testLongMethods() { + BinaryOperator sum1 = Long::sum; + LongBinaryOperator sum2 = Long::sum; + BinaryOperator max1 = Long::max; + LongBinaryOperator max2 = Long::max; + BinaryOperator min1 = Long::min; + LongBinaryOperator min2 = Long::min; + Comparator 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.operate(i, j)); + assertEquals(i+j, sum2.operateAsLong(i, j)); + assertEquals(Math.max(i,j), (long) max1.operate(i, j)); + assertEquals(Math.max(i,j), max2.operateAsLong(i, j)); + assertEquals(Math.min(i,j), (long) min1.operate(i, j)); + assertEquals(Math.min(i,j), min2.operateAsLong(i, j)); + assertEquals(((Long) i).compareTo(j), cmp.compare(i, j)); + } + } + } + + public void testFloatMethods() { + BinaryOperator sum1 = Float::sum; + BinaryOperator max1 = Float::max; + BinaryOperator min1 = Float::min; + Comparator 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.operate(i, j)); + assertEquals(Math.max(i,j), (float) max1.operate(i, j)); + assertEquals(Math.min(i,j), (float) min1.operate(i, j)); + assertEquals(((Float) i).compareTo(j), cmp.compare(i, j)); + } + } + } + + public void testDoubleMethods() { + BinaryOperator sum1 = Double::sum; + DoubleBinaryOperator sum2 = Double::sum; + BinaryOperator max1 = Double::max; + DoubleBinaryOperator max2 = Double::max; + BinaryOperator min1 = Double::min; + DoubleBinaryOperator min2 = Double::min; + Comparator 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.operate(i, j)); + assertEquals(i+j, sum2.operateAsDouble(i, j)); + assertEquals(Math.max(i,j), (double) max1.operate(i, j)); + assertEquals(Math.max(i,j), max2.operateAsDouble(i, j)); + assertEquals(Math.min(i,j), (double) min1.operate(i, j)); + assertEquals(Math.min(i,j), min2.operateAsDouble(i, j)); + assertEquals(((Double) i).compareTo(j), cmp.compare(i, j)); + } + } + } + +}