| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| /** |
| * @author Elena Semukhina |
| * @version $Revision$ |
| */ |
| |
| package org.apache.harmony.math.tests.java.math; |
| |
| import dalvik.annotation.TestTargetClass; |
| import dalvik.annotation.TestTargets; |
| import dalvik.annotation.TestLevel; |
| import dalvik.annotation.TestTargetNew; |
| |
| import java.math.BigInteger; |
| |
| import junit.framework.TestCase; |
| @TestTargetClass(BigInteger.class) |
| /** |
| * Class: java.math.BigInteger |
| * Method: and |
| */ |
| public class BigIntegerAndTest extends TestCase { |
| /** |
| * And for zero and a positive number |
| */ |
| @TestTargetNew( |
| level = TestLevel.PARTIAL_COMPLETE, |
| notes = "This is a complete subset of tests for and method.", |
| method = "and", |
| args = {java.math.BigInteger.class} |
| ) |
| public void testZeroPos() { |
| byte aBytes[] = {0}; |
| byte bBytes[] = {-2, -3, -4, -4, 5, 14, 23, 39, 48, 57, 66, 5, 14, 23}; |
| int aSign = 0; |
| int bSign = 1; |
| byte rBytes[] = {0}; |
| BigInteger aNumber = new BigInteger(aSign, aBytes); |
| BigInteger bNumber = new BigInteger(bSign, bBytes); |
| BigInteger result = aNumber.and(bNumber); |
| byte resBytes[] = new byte[rBytes.length]; |
| resBytes = result.toByteArray(); |
| for(int i = 0; i < resBytes.length; i++) { |
| assertTrue(resBytes[i] == rBytes[i]); |
| } |
| assertEquals("incorrect sign", 0, result.signum()); |
| } |
| |
| /** |
| * And for zero and a negative number |
| */ |
| @TestTargetNew( |
| level = TestLevel.PARTIAL_COMPLETE, |
| notes = "This is a complete subset of tests for and method.", |
| method = "and", |
| args = {java.math.BigInteger.class} |
| ) |
| public void testZeroNeg() { |
| byte aBytes[] = {0}; |
| byte bBytes[] = {-2, -3, -4, -4, 5, 14, 23, 39, 48, 57, 66, 5, 14, 23}; |
| int aSign = 0; |
| int bSign = -1; |
| byte rBytes[] = {0}; |
| BigInteger aNumber = new BigInteger(aSign, aBytes); |
| BigInteger bNumber = new BigInteger(bSign, bBytes); |
| BigInteger result = aNumber.and(bNumber); |
| byte resBytes[] = new byte[rBytes.length]; |
| resBytes = result.toByteArray(); |
| for(int i = 0; i < resBytes.length; i++) { |
| assertTrue(resBytes[i] == rBytes[i]); |
| } |
| assertEquals("incorrect sign", 0, result.signum()); |
| } |
| |
| /** |
| * And for a positive number and zero |
| */ |
| @TestTargetNew( |
| level = TestLevel.PARTIAL_COMPLETE, |
| notes = "This is a complete subset of tests for and method.", |
| method = "and", |
| args = {java.math.BigInteger.class} |
| ) |
| public void testPosZero() { |
| byte aBytes[] = {-2, -3, -4, -4, 5, 14, 23, 39, 48, 57, 66, 5, 14, 23}; |
| byte bBytes[] = {0}; |
| int aSign = 1; |
| int bSign = 0; |
| byte rBytes[] = {0}; |
| BigInteger aNumber = new BigInteger(aSign, aBytes); |
| BigInteger bNumber = new BigInteger(bSign, bBytes); |
| BigInteger result = aNumber.and(bNumber); |
| byte resBytes[] = new byte[rBytes.length]; |
| resBytes = result.toByteArray(); |
| for(int i = 0; i < resBytes.length; i++) { |
| assertTrue(resBytes[i] == rBytes[i]); |
| } |
| assertEquals("incorrect sign", 0, result.signum()); |
| } |
| |
| /** |
| * And for a negative number and zero |
| */ |
| @TestTargetNew( |
| level = TestLevel.PARTIAL_COMPLETE, |
| notes = "This is a complete subset of tests for and method.", |
| method = "and", |
| args = {java.math.BigInteger.class} |
| ) |
| public void testNegPos() { |
| byte aBytes[] = {-2, -3, -4, -4, 5, 14, 23, 39, 48, 57, 66, 5, 14, 23}; |
| byte bBytes[] = {0}; |
| int aSign = -1; |
| int bSign = 0; |
| byte rBytes[] = {0}; |
| BigInteger aNumber = new BigInteger(aSign, aBytes); |
| BigInteger bNumber = new BigInteger(bSign, bBytes); |
| BigInteger result = aNumber.and(bNumber); |
| byte resBytes[] = new byte[rBytes.length]; |
| resBytes = result.toByteArray(); |
| for(int i = 0; i < resBytes.length; i++) { |
| assertTrue(resBytes[i] == rBytes[i]); |
| } |
| assertEquals("incorrect sign", 0, result.signum()); |
| } |
| |
| /** |
| * And for zero and zero |
| */ |
| @TestTargetNew( |
| level = TestLevel.PARTIAL_COMPLETE, |
| notes = "This is a complete subset of tests for and method.", |
| method = "and", |
| args = {java.math.BigInteger.class} |
| ) |
| public void testZeroZero() { |
| byte aBytes[] = {0}; |
| byte bBytes[] = {0}; |
| int aSign = 0; |
| int bSign = 0; |
| byte rBytes[] = {0}; |
| BigInteger aNumber = new BigInteger(aSign, aBytes); |
| BigInteger bNumber = new BigInteger(bSign, bBytes); |
| BigInteger result = aNumber.and(bNumber); |
| byte resBytes[] = new byte[rBytes.length]; |
| resBytes = result.toByteArray(); |
| for(int i = 0; i < resBytes.length; i++) { |
| assertTrue(resBytes[i] == rBytes[i]); |
| } |
| assertEquals("incorrect sign", 0, result.signum()); |
| } |
| |
| /** |
| * And for zero and one |
| */ |
| @TestTargetNew( |
| level = TestLevel.PARTIAL_COMPLETE, |
| notes = "This is a complete subset of tests for and method.", |
| method = "and", |
| args = {java.math.BigInteger.class} |
| ) |
| public void testZeroOne() { |
| BigInteger aNumber = BigInteger.ZERO; |
| BigInteger bNumber = BigInteger.ONE; |
| BigInteger result = aNumber.and(bNumber); |
| assertTrue(result.equals(BigInteger.ZERO)); |
| assertEquals("incorrect sign", 0, result.signum()); |
| } |
| |
| /** |
| * And for one and one |
| */ |
| @TestTargetNew( |
| level = TestLevel.PARTIAL_COMPLETE, |
| notes = "This is a complete subset of tests for and method.", |
| method = "and", |
| args = {java.math.BigInteger.class} |
| ) |
| public void testOneOne() { |
| BigInteger aNumber = BigInteger.ONE; |
| BigInteger bNumber = BigInteger.ONE; |
| BigInteger result = aNumber.and(bNumber); |
| assertTrue(result.equals(BigInteger.ONE)); |
| assertEquals("incorrect sign", 1, result.signum()); |
| } |
| |
| /** |
| * And for two positive numbers of the same length |
| */ |
| @TestTargetNew( |
| level = TestLevel.PARTIAL_COMPLETE, |
| notes = "This is a complete subset of tests for and method.", |
| method = "and", |
| args = {java.math.BigInteger.class} |
| ) |
| public void testPosPosSameLength() { |
| byte aBytes[] = {-128, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, -117}; |
| byte bBytes[] = {-2, -3, -4, -4, 5, 14, 23, 39, 48, 57, 66, 5, 14, 23}; |
| int aSign = 1; |
| int bSign = 1; |
| byte rBytes[] = {0, -128, 56, 100, 4, 4, 17, 37, 16, 1, 64, 1, 10, 3}; |
| BigInteger aNumber = new BigInteger(aSign, aBytes); |
| BigInteger bNumber = new BigInteger(bSign, bBytes); |
| BigInteger result = aNumber.and(bNumber); |
| byte resBytes[] = new byte[rBytes.length]; |
| resBytes = result.toByteArray(); |
| for(int i = 0; i < resBytes.length; i++) { |
| assertTrue(resBytes[i] == rBytes[i]); |
| } |
| assertEquals("incorrect sign", 1, result.signum()); |
| } |
| |
| /** |
| * And for two positive numbers; the first is longer |
| */ |
| @TestTargetNew( |
| level = TestLevel.PARTIAL_COMPLETE, |
| notes = "This is a complete subset of tests for and method.", |
| method = "and", |
| args = {java.math.BigInteger.class} |
| ) |
| public void testPosPosFirstLonger() { |
| byte aBytes[] = {-128, 9, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, -117, 23, 87, -25, -75}; |
| byte bBytes[] = {-2, -3, -4, -4, 5, 14, 23, 39, 48, 57, 66, 5, 14, 23}; |
| int aSign = 1; |
| int bSign = 1; |
| byte rBytes[] = {0, -2, -76, 88, 44, 1, 2, 17, 35, 16, 9, 2, 5, 6, 21}; |
| BigInteger aNumber = new BigInteger(aSign, aBytes); |
| BigInteger bNumber = new BigInteger(bSign, bBytes); |
| BigInteger result = aNumber.and(bNumber); |
| byte resBytes[] = new byte[rBytes.length]; |
| resBytes = result.toByteArray(); |
| for(int i = 0; i < resBytes.length; i++) { |
| assertTrue(resBytes[i] == rBytes[i]); |
| } |
| assertEquals("incorrect sign", 1, result.signum()); |
| } |
| |
| /** |
| * And for two positive numbers; the first is shorter |
| */ |
| @TestTargetNew( |
| level = TestLevel.PARTIAL_COMPLETE, |
| notes = "This is a complete subset of tests for and method.", |
| method = "and", |
| args = {java.math.BigInteger.class} |
| ) |
| public void testPosPosFirstShorter() { |
| byte aBytes[] = {-2, -3, -4, -4, 5, 14, 23, 39, 48, 57, 66, 5, 14, 23}; |
| byte bBytes[] = {-128, 9, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, -117, 23, 87, -25, -75}; |
| int aSign = 1; |
| int bSign = 1; |
| byte rBytes[] = {0, -2, -76, 88, 44, 1, 2, 17, 35, 16, 9, 2, 5, 6, 21}; |
| BigInteger aNumber = new BigInteger(aSign, aBytes); |
| BigInteger bNumber = new BigInteger(bSign, bBytes); |
| BigInteger result = aNumber.and(bNumber); |
| byte resBytes[] = new byte[rBytes.length]; |
| resBytes = result.toByteArray(); |
| for(int i = 0; i < resBytes.length; i++) { |
| assertTrue(resBytes[i] == rBytes[i]); |
| } |
| assertEquals("incorrect sign", 1, result.signum()); |
| } |
| |
| /** |
| * And for two negative numbers of the same length |
| */ |
| @TestTargetNew( |
| level = TestLevel.PARTIAL_COMPLETE, |
| notes = "This is a complete subset of tests for and method.", |
| method = "and", |
| args = {java.math.BigInteger.class} |
| ) |
| public void testNegNegSameLength() { |
| byte aBytes[] = {-128, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, -117}; |
| byte bBytes[] = {-2, -3, -4, -4, 5, 14, 23, 39, 48, 57, 66, 5, 14, 23}; |
| int aSign = -1; |
| int bSign = -1; |
| byte rBytes[] = {-1, 1, 2, 3, 3, 0, 65, -96, -48, -124, -60, 12, -40, -31, 97}; |
| BigInteger aNumber = new BigInteger(aSign, aBytes); |
| BigInteger bNumber = new BigInteger(bSign, bBytes); |
| BigInteger result = aNumber.and(bNumber); |
| byte resBytes[] = new byte[rBytes.length]; |
| resBytes = result.toByteArray(); |
| for(int i = 0; i < resBytes.length; i++) { |
| assertTrue(resBytes[i] == rBytes[i]); |
| } |
| assertEquals("incorrect sign", -1, result.signum()); |
| } |
| |
| /** |
| * And for two negative numbers; the first is longer |
| */ |
| @TestTargetNew( |
| level = TestLevel.PARTIAL_COMPLETE, |
| notes = "This is a complete subset of tests for and method.", |
| method = "and", |
| args = {java.math.BigInteger.class} |
| ) |
| public void testNegNegFirstLonger() { |
| byte aBytes[] = {-128, 9, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, -117, 23, 87, -25, -75}; |
| byte bBytes[] = {-2, -3, -4, -4, 5, 14, 23, 39, 48, 57, 66, 5, 14, 23}; |
| int aSign = -1; |
| int bSign = -1; |
| byte rBytes[] = {-1, 127, -10, -57, -101, 1, 2, 2, 2, -96, -16, 8, -40, -59, 68, -88, -88, 16, 73}; |
| BigInteger aNumber = new BigInteger(aSign, aBytes); |
| BigInteger bNumber = new BigInteger(bSign, bBytes); |
| BigInteger result = aNumber.and(bNumber); |
| byte resBytes[] = new byte[rBytes.length]; |
| resBytes = result.toByteArray(); |
| for(int i = 0; i < resBytes.length; i++) { |
| assertTrue(resBytes[i] == rBytes[i]); |
| } |
| assertEquals("incorrect sign", -1, result.signum()); |
| } |
| |
| /** |
| * And for two negative numbers; the first is shorter |
| */ |
| @TestTargetNew( |
| level = TestLevel.PARTIAL_COMPLETE, |
| notes = "This is a complete subset of tests for and method.", |
| method = "and", |
| args = {java.math.BigInteger.class} |
| ) |
| public void testNegNegFirstShorter() { |
| byte aBytes[] = {-2, -3, -4, -4, 5, 14, 23, 39, 48, 57, 66, 5, 14, 23}; |
| byte bBytes[] = {-128, 9, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, -117, 23, 87, -25, -75}; |
| int aSign = -1; |
| int bSign = -1; |
| byte rBytes[] = {-1, 127, -10, -57, -101, 1, 2, 2, 2, -96, -16, 8, -40, -59, 68, -88, -88, 16, 73}; |
| BigInteger aNumber = new BigInteger(aSign, aBytes); |
| BigInteger bNumber = new BigInteger(bSign, bBytes); |
| BigInteger result = aNumber.and(bNumber); |
| byte resBytes[] = new byte[rBytes.length]; |
| resBytes = result.toByteArray(); |
| for(int i = 0; i < resBytes.length; i++) { |
| assertTrue(resBytes[i] == rBytes[i]); |
| } |
| assertEquals("incorrect sign", -1, result.signum()); |
| } |
| |
| /** |
| * And for two numbers of different signs and the same length |
| */ |
| @TestTargetNew( |
| level = TestLevel.PARTIAL_COMPLETE, |
| notes = "This is a complete subset of tests for and method.", |
| method = "and", |
| args = {java.math.BigInteger.class} |
| ) |
| public void testPosNegSameLength() { |
| byte aBytes[] = {-128, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, -117}; |
| byte bBytes[] = {-2, -3, -4, -4, 5, 14, 23, 39, 48, 57, 66, 5, 14, 23}; |
| int aSign = 1; |
| int bSign = -1; |
| byte rBytes[] = {0, -6, -80, 72, 8, 75, 2, -79, 34, 16, -119}; |
| BigInteger aNumber = new BigInteger(aSign, aBytes); |
| BigInteger bNumber = new BigInteger(bSign, bBytes); |
| BigInteger result = aNumber.and(bNumber); |
| byte resBytes[] = new byte[rBytes.length]; |
| resBytes = result.toByteArray(); |
| for(int i = 0; i < resBytes.length; i++) { |
| assertTrue(resBytes[i] == rBytes[i]); |
| } |
| assertEquals("incorrect sign", 1, result.signum()); |
| } |
| |
| /** |
| * And for two numbers of different signs and the same length |
| */ |
| @TestTargetNew( |
| level = TestLevel.PARTIAL_COMPLETE, |
| notes = "This is a complete subset of tests for and method.", |
| method = "and", |
| args = {java.math.BigInteger.class} |
| ) |
| public void testNegPosSameLength() { |
| byte aBytes[] = {-128, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, -117}; |
| byte bBytes[] = {-2, -3, -4, -4, 5, 14, 23, 39, 48, 57, 66, 5, 14, 23}; |
| int aSign = -1; |
| int bSign = 1; |
| byte rBytes[] = {0, -2, 125, -60, -104, 1, 10, 6, 2, 32, 56, 2, 4, 4, 21}; |
| BigInteger aNumber = new BigInteger(aSign, aBytes); |
| BigInteger bNumber = new BigInteger(bSign, bBytes); |
| BigInteger result = aNumber.and(bNumber); |
| byte resBytes[] = new byte[rBytes.length]; |
| resBytes = result.toByteArray(); |
| for(int i = 0; i < resBytes.length; i++) { |
| assertTrue(resBytes[i] == rBytes[i]); |
| } |
| assertEquals("incorrect sign", 1, result.signum()); |
| } |
| |
| /** |
| * And for a negative and a positive numbers; the first is longer |
| */ |
| @TestTargetNew( |
| level = TestLevel.PARTIAL_COMPLETE, |
| notes = "This is a complete subset of tests for and method.", |
| method = "and", |
| args = {java.math.BigInteger.class} |
| ) |
| public void testNegPosFirstLonger() { |
| byte aBytes[] = {-128, 9, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, -117, 23, 87, -25, -75}; |
| byte bBytes[] = {-2, -3, -4, -4, 5, 14, 23, 39, 48, 57, 66, 5, 14, 23}; |
| int aSign = -1; |
| int bSign = 1; |
| byte rBytes[] = {73, -92, -48, 4, 12, 6, 4, 32, 48, 64, 0, 8, 3}; |
| BigInteger aNumber = new BigInteger(aSign, aBytes); |
| BigInteger bNumber = new BigInteger(bSign, bBytes); |
| BigInteger result = aNumber.and(bNumber); |
| byte resBytes[] = new byte[rBytes.length]; |
| resBytes = result.toByteArray(); |
| for(int i = 0; i < resBytes.length; i++) { |
| assertTrue(resBytes[i] == rBytes[i]); |
| } |
| assertEquals("incorrect sign", 1, result.signum()); |
| } |
| |
| /** |
| * And for a negative and a positive numbers; the first is shorter |
| */ |
| @TestTargetNew( |
| level = TestLevel.PARTIAL_COMPLETE, |
| notes = "This is a complete subset of tests for and method.", |
| method = "and", |
| args = {java.math.BigInteger.class} |
| ) |
| public void testNegPosFirstShorter() { |
| byte aBytes[] = {-2, -3, -4, -4, 5, 14, 23, 39, 48, 57, 66, 5, 14, 23}; |
| byte bBytes[] = {-128, 9, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, -117, 23, 87, -25, -75}; |
| int aSign = -1; |
| int bSign = 1; |
| byte rBytes[] = {0, -128, 9, 56, 100, 0, 0, 1, 1, 90, 1, -32, 0, 10, -126, 21, 82, -31, -95}; |
| BigInteger aNumber = new BigInteger(aSign, aBytes); |
| BigInteger bNumber = new BigInteger(bSign, bBytes); |
| BigInteger result = aNumber.and(bNumber); |
| byte resBytes[] = new byte[rBytes.length]; |
| resBytes = result.toByteArray(); |
| for(int i = 0; i < resBytes.length; i++) { |
| assertTrue(resBytes[i] == rBytes[i]); |
| } |
| assertEquals("incorrect sign", 1, result.signum()); |
| } |
| |
| /** |
| * And for a positive and a negative numbers; the first is longer |
| */ |
| @TestTargetNew( |
| level = TestLevel.PARTIAL_COMPLETE, |
| notes = "This is a complete subset of tests for and method.", |
| method = "and", |
| args = {java.math.BigInteger.class} |
| ) |
| public void testPosNegFirstLonger() { |
| byte aBytes[] = {-128, 9, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, -117, 23, 87, -25, -75}; |
| byte bBytes[] = {-2, -3, -4, -4, 5, 14, 23, 39, 48, 57, 66, 5, 14, 23}; |
| int aSign = 1; |
| int bSign = -1; |
| byte rBytes[] = {0, -128, 9, 56, 100, 0, 0, 1, 1, 90, 1, -32, 0, 10, -126, 21, 82, -31, -95}; |
| BigInteger aNumber = new BigInteger(aSign, aBytes); |
| BigInteger bNumber = new BigInteger(bSign, bBytes); |
| BigInteger result = aNumber.and(bNumber); |
| byte resBytes[] = new byte[rBytes.length]; |
| resBytes = result.toByteArray(); |
| for(int i = 0; i < resBytes.length; i++) { |
| assertTrue(resBytes[i] == rBytes[i]); |
| } |
| assertEquals("incorrect sign", 1, result.signum()); |
| } |
| |
| /** |
| * And for a positive and a negative numbers; the first is shorter |
| */ |
| @TestTargetNew( |
| level = TestLevel.PARTIAL_COMPLETE, |
| notes = "This is a complete subset of tests for and method.", |
| method = "and", |
| args = {java.math.BigInteger.class} |
| ) |
| public void testPosNegFirstShorter() { |
| byte aBytes[] = {-2, -3, -4, -4, 5, 14, 23, 39, 48, 57, 66, 5, 14, 23}; |
| byte bBytes[] = {-128, 9, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, -117, 23, 87, -25, -75}; |
| int aSign = 1; |
| int bSign = -1; |
| byte rBytes[] = {73, -92, -48, 4, 12, 6, 4, 32, 48, 64, 0, 8, 3}; |
| BigInteger aNumber = new BigInteger(aSign, aBytes); |
| BigInteger bNumber = new BigInteger(bSign, bBytes); |
| BigInteger result = aNumber.and(bNumber); |
| byte resBytes[] = new byte[rBytes.length]; |
| resBytes = result.toByteArray(); |
| for(int i = 0; i < resBytes.length; i++) { |
| assertTrue(resBytes[i] == rBytes[i]); |
| } |
| assertEquals("incorrect sign", 1, result.signum()); |
| } |
| |
| /** |
| * Test for a special case |
| */ |
| @TestTargetNew( |
| level = TestLevel.PARTIAL_COMPLETE, |
| notes = "This is a complete subset of tests for and method.", |
| method = "and", |
| args = {java.math.BigInteger.class} |
| ) |
| public void testSpecialCase1() { |
| byte aBytes[] = {-1, -1, -1, -1}; |
| byte bBytes[] = {5, -4, -3, -2}; |
| int aSign = -1; |
| int bSign = -1; |
| byte rBytes[] = {-1, 0, 0, 0, 0}; |
| BigInteger aNumber = new BigInteger(aSign, aBytes); |
| BigInteger bNumber = new BigInteger(bSign, bBytes); |
| BigInteger result = aNumber.and(bNumber); |
| byte resBytes[] = new byte[rBytes.length]; |
| resBytes = result.toByteArray(); |
| for(int i = 0; i < resBytes.length; i++) { |
| assertTrue(resBytes[i] == rBytes[i]); |
| } |
| assertEquals("incorrect sign", -1, result.signum()); |
| } |
| |
| /** |
| * Test for a special case |
| */ |
| @TestTargetNew( |
| level = TestLevel.PARTIAL_COMPLETE, |
| notes = "This is a complete subset of tests for and method.", |
| method = "and", |
| args = {java.math.BigInteger.class} |
| ) |
| public void testSpecialCase2() { |
| byte aBytes[] = {-51}; |
| byte bBytes[] = {-52, -51, -50, -49, -48}; |
| int aSign = -1; |
| int bSign = 1; |
| byte rBytes[] = {0, -52, -51, -50, -49, 16}; |
| BigInteger aNumber = new BigInteger(aSign, aBytes); |
| BigInteger bNumber = new BigInteger(bSign, bBytes); |
| BigInteger result = aNumber.and(bNumber); |
| byte resBytes[] = new byte[rBytes.length]; |
| resBytes = result.toByteArray(); |
| for(int i = 0; i < resBytes.length; i++) { |
| assertTrue(resBytes[i] == rBytes[i]); |
| } |
| assertEquals("incorrect sign", 1, result.signum()); |
| } |
| } |