Nikita Iashchenko | 157b132 | 2021-09-17 15:04:07 +0100 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2003, 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. |
| 8 | * |
| 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| 13 | * accompanied this code). |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License version |
| 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 18 | * |
| 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| 20 | * or visit www.oracle.com if you need additional information or have any |
| 21 | * questions. |
| 22 | */ |
| 23 | package test.java.math.BigDecimal; |
| 24 | |
| 25 | /* |
| 26 | * @test |
| 27 | * @bug 4916097 |
| 28 | * @summary Some exponent over/undeflow tests for the pow method |
| 29 | * @author Joseph D. Darcy |
| 30 | */ |
| 31 | |
| 32 | import java.math.*; |
| 33 | |
| 34 | import org.testng.Assert; |
| 35 | import org.testng.annotations.Test; |
| 36 | |
| 37 | // Android-changed: Replace error counting with asserts. |
| 38 | public class PowTests { |
| 39 | @Test |
| 40 | public void zeroAndOneTests() { |
| 41 | BigDecimal[][] testCases = { |
| 42 | {BigDecimal.valueOf(0, Integer.MAX_VALUE), new BigDecimal(0), BigDecimal.valueOf(1, 0)}, |
| 43 | {BigDecimal.valueOf(0, Integer.MAX_VALUE), new BigDecimal(1), BigDecimal.valueOf(0, Integer.MAX_VALUE)}, |
| 44 | {BigDecimal.valueOf(0, Integer.MAX_VALUE), new BigDecimal(2), BigDecimal.valueOf(0, Integer.MAX_VALUE)}, |
| 45 | {BigDecimal.valueOf(0, Integer.MAX_VALUE), new BigDecimal(999999999), BigDecimal.valueOf(0, Integer.MAX_VALUE)}, |
| 46 | |
| 47 | {BigDecimal.valueOf(0, Integer.MIN_VALUE), new BigDecimal(0), BigDecimal.valueOf(1, 0)}, |
| 48 | {BigDecimal.valueOf(0, Integer.MIN_VALUE), new BigDecimal(1), BigDecimal.valueOf(0, Integer.MIN_VALUE)}, |
| 49 | {BigDecimal.valueOf(0, Integer.MIN_VALUE), new BigDecimal(2), BigDecimal.valueOf(0, Integer.MIN_VALUE)}, |
| 50 | {BigDecimal.valueOf(0, Integer.MIN_VALUE), new BigDecimal(999999999), BigDecimal.valueOf(0, Integer.MIN_VALUE)}, |
| 51 | |
| 52 | {BigDecimal.valueOf(1, Integer.MAX_VALUE), new BigDecimal(0), BigDecimal.valueOf(1, 0)}, |
| 53 | {BigDecimal.valueOf(1, Integer.MAX_VALUE), new BigDecimal(1), BigDecimal.valueOf(1, Integer.MAX_VALUE)}, |
| 54 | {BigDecimal.valueOf(1, Integer.MAX_VALUE), new BigDecimal(2), null}, // overflow |
| 55 | {BigDecimal.valueOf(1, Integer.MAX_VALUE), new BigDecimal(999999999), null}, // overflow |
| 56 | |
| 57 | {BigDecimal.valueOf(1, Integer.MIN_VALUE), new BigDecimal(0), BigDecimal.valueOf(1, 0)}, |
| 58 | {BigDecimal.valueOf(1, Integer.MIN_VALUE), new BigDecimal(1), BigDecimal.valueOf(1, Integer.MIN_VALUE)}, |
| 59 | {BigDecimal.valueOf(1, Integer.MIN_VALUE), new BigDecimal(2), null}, // underflow |
| 60 | {BigDecimal.valueOf(1, Integer.MIN_VALUE), new BigDecimal(999999999), null}, // underflow |
| 61 | }; |
| 62 | |
| 63 | for(BigDecimal[] testCase: testCases) { |
| 64 | int exponent = testCase[1].intValueExact(); |
| 65 | BigDecimal result; |
| 66 | |
| 67 | try{ |
| 68 | result = testCase[0].pow(exponent); |
| 69 | Assert.assertEquals(result, testCase[2], "Unexpected result while raising " + |
| 70 | testCase[0] + |
| 71 | " to the " + exponent + " power; expected " + |
| 72 | testCase[2] + ", got " + result + "."); |
| 73 | } catch (ArithmeticException e) { |
| 74 | if (testCase[2] != null) { |
| 75 | Assert.fail("Unexpected exception while raising " + testCase[0] + |
| 76 | " to the " + exponent + " power."); |
| 77 | |
| 78 | } |
| 79 | } |
| 80 | } |
| 81 | } |
| 82 | } |