1 /*
2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 import org.testng.annotations.Test;
27
28 import java.util.Comparator;
29 import java.util.function.BinaryOperator;
30 import java.util.function.IntBinaryOperator;
31
32 import static org.testng.Assert.assertEquals;
33 import static org.testng.Assert.assertFalse;
34 import static org.testng.Assert.assertTrue;
35
36 import java.util.function.DoubleBinaryOperator;
37 import java.util.function.LongBinaryOperator;
38
39 /**
40 * @test
41 * @run testng PrimitiveSumMinMaxTest
42 * @summary test conversion of primitive wrapper sum, min, max, and compareTo methods to functional interfaces
43 *
44 * @author Brian Goetz
45 */
46 @Test
47 public class PrimitiveSumMinMaxTest {
48
49 public void testBooleanMethods() {
50 BinaryOperator<Boolean> and = Boolean::logicalAnd;
51 BinaryOperator<Boolean> or = Boolean::logicalOr;
52 BinaryOperator<Boolean> xor = Boolean::logicalXor;
53 Comparator<Boolean> cmp = Boolean::compare;
54
55 assertTrue(and.operate(true, true));
56 assertFalse(and.operate(true, false));
57 assertFalse(and.operate(false, true));
58 assertFalse(and.operate(false, false));
59
60 assertTrue(or.operate(true, true));
61 assertTrue(or.operate(true, false));
62 assertTrue(or.operate(false, true));
63 assertFalse(or.operate(false, false));
64
65 assertFalse(xor.operate(true, true));
66 assertTrue(xor.operate(true, false));
67 assertTrue(xor.operate(false, true));
68 assertFalse(xor.operate(false, false));
69
70 assertEquals(Boolean.TRUE.compareTo(Boolean.TRUE), cmp.compare(true, true));
71 assertEquals(Boolean.TRUE.compareTo(Boolean.FALSE), cmp.compare(true, false));
72 assertEquals(Boolean.FALSE.compareTo(Boolean.TRUE), cmp.compare(false, true));
73 assertEquals(Boolean.FALSE.compareTo(Boolean.FALSE), cmp.compare(false, false));
74 };
75
76 public void testByteMethods() {
77 BinaryOperator<Byte> sum1 = Byte::sum;
78 BinaryOperator<Byte> max1 = Byte::max;
79 BinaryOperator<Byte> min1 = Byte::min;
80 Comparator<Byte> cmp = Byte::compare;
81
82 byte[] numbers = { -1, 0, 1, 100, Byte.MAX_VALUE, Byte.MIN_VALUE };
83 for (byte i : numbers) {
84 for (byte j : numbers) {
85 assertEquals((byte) (i+j), (byte) sum1.operate(i, j));
86 assertEquals(Math.max(i,j), (byte) max1.operate(i, j));
87 assertEquals(Math.min(i,j), (byte) min1.operate(i, j));
88 assertEquals(((Byte) i).compareTo(j), cmp.compare(i, j));
89 }
90 }
91 }
92
93 public void testShortMethods() {
94 BinaryOperator<Short> sum1 = Short::sum;
95 BinaryOperator<Short> max1 = Short::max;
96 BinaryOperator<Short> min1 = Short::min;
97 Comparator<Short> cmp = Short::compare;
98
99 short[] numbers = { -1, 0, 1, 100, Short.MAX_VALUE, Short.MIN_VALUE };
100 for (short i : numbers) {
101 for (short j : numbers) {
102 assertEquals((short) (i+j), (short) sum1.operate(i, j));
103 assertEquals(Math.max(i,j), (short) max1.operate(i, j));
104 assertEquals(Math.min(i,j), (short) min1.operate(i, j));
105 assertEquals(((Short) i).compareTo(j), cmp.compare(i, j));
106 }
107 }
108 }
109
110 public void testIntMethods() {
111 BinaryOperator<Integer> sum1 = Integer::sum;
112 IntBinaryOperator sum2 = Integer::sum;
113 BinaryOperator<Integer> max1 = Integer::max;
114 IntBinaryOperator max2 = Integer::max;
115 BinaryOperator<Integer> min1 = Integer::min;
116 IntBinaryOperator min2 = Integer::min;
117 Comparator<Integer> cmp = Integer::compare;
118
119 int[] numbers = { -1, 0, 1, 100, Integer.MAX_VALUE, Integer.MIN_VALUE };
120 for (int i : numbers) {
121 for (int j : numbers) {
122 assertEquals(i+j, (int) sum1.operate(i, j));
123 assertEquals(i+j, sum2.operateAsInt(i, j));
124 assertEquals(Math.max(i,j), (int) max1.operate(i, j));
125 assertEquals(Math.max(i,j), max2.operateAsInt(i, j));
126 assertEquals(Math.min(i,j), (int) min1.operate(i, j));
127 assertEquals(Math.min(i,j), min2.operateAsInt(i, j));
128 assertEquals(((Integer) i).compareTo(j), cmp.compare(i, j));
129 }
130 }
131 }
132
133 public void testLongMethods() {
134 BinaryOperator<Long> sum1 = Long::sum;
135 LongBinaryOperator sum2 = Long::sum;
136 BinaryOperator<Long> max1 = Long::max;
137 LongBinaryOperator max2 = Long::max;
138 BinaryOperator<Long> min1 = Long::min;
139 LongBinaryOperator min2 = Long::min;
140 Comparator<Long> cmp = Long::compare;
141
142 long[] numbers = { -1, 0, 1, 100, Long.MAX_VALUE, Long.MIN_VALUE };
143 for (long i : numbers) {
144 for (long j : numbers) {
145 assertEquals(i+j, (long) sum1.operate(i, j));
146 assertEquals(i+j, sum2.operateAsLong(i, j));
147 assertEquals(Math.max(i,j), (long) max1.operate(i, j));
148 assertEquals(Math.max(i,j), max2.operateAsLong(i, j));
149 assertEquals(Math.min(i,j), (long) min1.operate(i, j));
150 assertEquals(Math.min(i,j), min2.operateAsLong(i, j));
151 assertEquals(((Long) i).compareTo(j), cmp.compare(i, j));
152 }
153 }
154 }
155
156 public void testFloatMethods() {
157 BinaryOperator<Float> sum1 = Float::sum;
158 BinaryOperator<Float> max1 = Float::max;
159 BinaryOperator<Float> min1 = Float::min;
160 Comparator<Float> cmp = Float::compare;
161
162 float[] numbers = { -1, 0, 1, 100, Float.MAX_VALUE, Float.MIN_VALUE };
163 for (float i : numbers) {
164 for (float j : numbers) {
165 assertEquals(i+j, (float) sum1.operate(i, j));
166 assertEquals(Math.max(i,j), (float) max1.operate(i, j));
167 assertEquals(Math.min(i,j), (float) min1.operate(i, j));
168 assertEquals(((Float) i).compareTo(j), cmp.compare(i, j));
169 }
170 }
171 }
172
173 public void testDoubleMethods() {
174 BinaryOperator<Double> sum1 = Double::sum;
175 DoubleBinaryOperator sum2 = Double::sum;
176 BinaryOperator<Double> max1 = Double::max;
177 DoubleBinaryOperator max2 = Double::max;
178 BinaryOperator<Double> min1 = Double::min;
179 DoubleBinaryOperator min2 = Double::min;
180 Comparator<Double> cmp = Double::compare;
181
182 double[] numbers = { -1, 0, 1, 100, Double.MAX_VALUE, Double.MIN_VALUE };
183 for (double i : numbers) {
184 for (double j : numbers) {
185 assertEquals(i+j, (double) sum1.operate(i, j));
186 assertEquals(i+j, sum2.operateAsDouble(i, j));
187 assertEquals(Math.max(i,j), (double) max1.operate(i, j));
188 assertEquals(Math.max(i,j), max2.operateAsDouble(i, j));
189 assertEquals(Math.min(i,j), (double) min1.operate(i, j));
190 assertEquals(Math.min(i,j), min2.operateAsDouble(i, j));
191 assertEquals(((Double) i).compareTo(j), cmp.compare(i, j));
192 }
193 }
194 }
195
196 }