/*
* 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
* Methods: abs, compareTo, equals, max, min, negate, signum
*/
public class BigIntegerCompareTest extends TestCase {
/**
* abs() for a positive number
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "This is a complete subset of tests for abs method.",
method = "abs",
args = {}
)
public void testAbsPositive() {
byte aBytes[] = {1, 2, 3, 4, 5, 6, 7};
int aSign = 1;
byte rBytes[] = {1, 2, 3, 4, 5, 6, 7};
BigInteger aNumber = new BigInteger(aSign, aBytes);
BigInteger result = aNumber.abs();
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());
}
/**
* abs() for a negative number
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "This is a complete subset of tests for abs method.",
method = "abs",
args = {}
)
public void testAbsNegative() {
byte aBytes[] = {1, 2, 3, 4, 5, 6, 7};
int aSign = -1;
byte rBytes[] = {1, 2, 3, 4, 5, 6, 7};
BigInteger aNumber = new BigInteger(aSign, aBytes);
BigInteger result = aNumber.abs();
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());
}
/**
* compareTo(BigInteger a).
* Compare two positive numbers.
* The first is greater.
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "This is a complete subset of tests for compareTo method.",
method = "compareTo",
args = {java.math.BigInteger.class}
)
public void testCompareToPosPos1() {
byte aBytes[] = {12, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, 3, 91};
byte bBytes[] = {10, 20, 30, 40, 50, 60, 70, 10, 20, 30};
int aSign = 1;
int bSign = 1;
BigInteger aNumber = new BigInteger(aSign, aBytes);
BigInteger bNumber = new BigInteger(bSign, bBytes);
assertEquals(1, aNumber.compareTo(bNumber));
}
/**
* compareTo(BigInteger a).
* Compare two positive numbers.
* The first is less.
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "This is a complete subset of tests for compareTo method.",
method = "compareTo",
args = {java.math.BigInteger.class}
)
public void testCompareToPosPos2() {
byte aBytes[] = {10, 20, 30, 40, 50, 60, 70, 10, 20, 30};
byte bBytes[] = {12, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, 3, 91};
int aSign = 1;
int bSign = 1;
BigInteger aNumber = new BigInteger(aSign, aBytes);
BigInteger bNumber = new BigInteger(bSign, bBytes);
assertEquals(-1, aNumber.compareTo(bNumber));
}
/**
* compareTo(BigInteger a).
* Compare two equal positive numbers.
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "This is a complete subset of tests for compareTo method.",
method = "compareTo",
args = {java.math.BigInteger.class}
)
public void testCompareToEqualPos() {
byte aBytes[] = {12, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, 3, 91};
byte bBytes[] = {12, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, 3, 91};
int aSign = 1;
int bSign = 1;
BigInteger aNumber = new BigInteger(aSign, aBytes);
BigInteger bNumber = new BigInteger(bSign, bBytes);
assertEquals(0, aNumber.compareTo(bNumber));
}
/**
* compareTo(BigInteger a).
* Compare two negative numbers.
* The first is greater in absolute value.
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "This is a complete subset of tests for compareTo method.",
method = "compareTo",
args = {java.math.BigInteger.class}
)
public void testCompareToNegNeg1() {
byte aBytes[] = {12, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, 3, 91};
byte bBytes[] = {10, 20, 30, 40, 50, 60, 70, 10, 20, 30};
int aSign = -1;
int bSign = -1;
BigInteger aNumber = new BigInteger(aSign, aBytes);
BigInteger bNumber = new BigInteger(bSign, bBytes);
assertEquals(-1, aNumber.compareTo(bNumber));
}
/**
* compareTo(BigInteger a).
* Compare two negative numbers.
* The first is less in absolute value.
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "This is a complete subset of tests for compareTo method.",
method = "compareTo",
args = {java.math.BigInteger.class}
)
public void testCompareNegNeg2() {
byte aBytes[] = {10, 20, 30, 40, 50, 60, 70, 10, 20, 30};
byte bBytes[] = {12, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, 3, 91};
int aSign = -1;
int bSign = -1;
BigInteger aNumber = new BigInteger(aSign, aBytes);
BigInteger bNumber = new BigInteger(bSign, bBytes);
assertEquals(1, aNumber.compareTo(bNumber));
}
/**
* compareTo(BigInteger a).
* Compare two equal negative numbers.
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "This is a complete subset of tests for compareTo method.",
method = "compareTo",
args = {java.math.BigInteger.class}
)
public void testCompareToEqualNeg() {
byte aBytes[] = {12, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, 3, 91};
byte bBytes[] = {12, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, 3, 91};
int aSign = -1;
int bSign = -1;
BigInteger aNumber = new BigInteger(aSign, aBytes);
BigInteger bNumber = new BigInteger(bSign, bBytes);
assertEquals(0, aNumber.compareTo(bNumber));
}
/**
* compareTo(BigInteger a).
* Compare two numbers of different signs.
* The first is positive.
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "This is a complete subset of tests for compareTo method.",
method = "compareTo",
args = {java.math.BigInteger.class}
)
public void testCompareToDiffSigns1() {
byte aBytes[] = {12, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, 3, 91};
byte bBytes[] = {10, 20, 30, 40, 50, 60, 70, 10, 20, 30};
int aSign = 1;
int bSign = -1;
BigInteger aNumber = new BigInteger(aSign, aBytes);
BigInteger bNumber = new BigInteger(bSign, bBytes);
assertEquals(1, aNumber.compareTo(bNumber));
}
/**
* compareTo(BigInteger a).
* Compare two numbers of different signs.
* The first is negative.
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "This is a complete subset of tests for compareTo method.",
method = "compareTo",
args = {java.math.BigInteger.class}
)
public void testCompareToDiffSigns2() {
byte aBytes[] = {12, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, 3, 91};
byte bBytes[] = {10, 20, 30, 40, 50, 60, 70, 10, 20, 30};
int aSign = -1;
int bSign = 1;
BigInteger aNumber = new BigInteger(aSign, aBytes);
BigInteger bNumber = new BigInteger(bSign, bBytes);
assertEquals(-1, aNumber.compareTo(bNumber));
}
/**
* compareTo(BigInteger a).
* Compare a positive number to ZERO.
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "This is a complete subset of tests for compareTo method.",
method = "compareTo",
args = {java.math.BigInteger.class}
)
public void testCompareToPosZero() {
byte aBytes[] = {12, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, 3, 91};
int aSign = 1;
BigInteger aNumber = new BigInteger(aSign, aBytes);
BigInteger bNumber = BigInteger.ZERO;
assertEquals(1, aNumber.compareTo(bNumber));
}
/**
* compareTo(BigInteger a).
* Compare ZERO to a positive number.
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "This is a complete subset of tests for compareTo method.",
method = "compareTo",
args = {java.math.BigInteger.class}
)
public void testCompareToZeroPos() {
byte bBytes[] = {12, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, 3, 91};
int bSign = 1;
BigInteger aNumber = BigInteger.ZERO;
BigInteger bNumber = new BigInteger(bSign, bBytes);
assertEquals(-1, aNumber.compareTo(bNumber));
}
/**
* compareTo(BigInteger a).
* Compare a negative number to ZERO.
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "This is a complete subset of tests for compareTo method.",
method = "compareTo",
args = {java.math.BigInteger.class}
)
public void testCompareToNegZero() {
byte aBytes[] = {12, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, 3, 91};
int aSign = -1;
BigInteger aNumber = new BigInteger(aSign, aBytes);
BigInteger bNumber = BigInteger.ZERO;
assertEquals(-1, aNumber.compareTo(bNumber));
}
/**
* compareTo(BigInteger a).
* Compare ZERO to a negative number.
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "This is a complete subset of tests for compareTo method.",
method = "compareTo",
args = {java.math.BigInteger.class}
)
public void testCompareToZeroNeg() {
byte bBytes[] = {12, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, 3, 91};
int bSign = -1;
BigInteger aNumber = BigInteger.ZERO;
BigInteger bNumber = new BigInteger(bSign, bBytes);
assertEquals(1, aNumber.compareTo(bNumber));
}
/**
* compareTo(BigInteger a).
* Compare ZERO to ZERO.
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "This is a complete subset of tests for compareTo method.",
method = "compareTo",
args = {java.math.BigInteger.class}
)
public void testCompareToZeroZero() {
BigInteger aNumber = BigInteger.ZERO;
BigInteger bNumber = BigInteger.ZERO;
assertEquals(0, aNumber.compareTo(bNumber));
}
/**
* equals(Object obj).
* obj is not a BigInteger
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "This is a complete subset of tests for equals method.",
method = "equals",
args = {java.lang.Object.class}
)
public void testEqualsObject() {
byte aBytes[] = {12, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, 3, 91};
int aSign = 1;
BigInteger aNumber = new BigInteger(aSign, aBytes);
Object obj = new Object();
assertFalse(aNumber.equals(obj));
}
/**
* equals(null).
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "This is a complete subset of tests for equals method.",
method = "equals",
args = {java.lang.Object.class}
)
public void testEqualsNull() {
byte aBytes[] = {12, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, 3, 91};
int aSign = 1;
BigInteger aNumber = new BigInteger(aSign, aBytes);
assertFalse(aNumber.equals(null));
}
/**
* equals(Object obj).
* obj is a BigInteger.
* numbers are equal.
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "This is a complete subset of tests for equals method.",
method = "equals",
args = {java.lang.Object.class}
)
public void testEqualsBigIntegerTrue() {
byte aBytes[] = {12, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, 3, 91};
byte bBytes[] = {12, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, 3, 91};
int aSign = 1;
int bSign = 1;
BigInteger aNumber = new BigInteger(aSign, aBytes);
Object bNumber = new BigInteger(bSign, bBytes);
assertTrue(aNumber.equals(bNumber));
}
/**
* equals(Object obj).
* obj is a BigInteger.
* numbers are not equal.
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "This is a complete subset of tests for equals method.",
method = "equals",
args = {java.lang.Object.class}
)
public void testEqualsBigIntegerFalse() {
byte aBytes[] = {12, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, 3, 91};
byte bBytes[] = {45, 91, 3, -15, 35, 26, 3, 91};
int aSign = 1;
int bSign = 1;
BigInteger aNumber = new BigInteger(aSign, aBytes);
Object bNumber = new BigInteger(bSign, bBytes);
assertFalse(aNumber.equals(bNumber));
}
/**
* max(BigInteger val).
* the first is greater.
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "This is a complete subset of tests for max method.",
method = "max",
args = {java.math.BigInteger.class}
)
public void testMaxGreater() {
byte aBytes[] = {12, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, 3, 91};
byte bBytes[] = {45, 91, 3, -15, 35, 26, 3, 91};
int aSign = 1;
int bSign = 1;
byte rBytes[] = {12, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, 3, 91};
BigInteger aNumber = new BigInteger(aSign, aBytes);
BigInteger bNumber = new BigInteger(bSign, bBytes);
BigInteger result = aNumber.max(bNumber);
byte resBytes[] = new byte[rBytes.length];
resBytes = result.toByteArray();
for(int i = 0; i < resBytes.length; i++) {
assertTrue(resBytes[i] == rBytes[i]);
}
assertTrue("incorrect sign", result.signum() == 1);
}
/**
* max(BigInteger val).
* the first is less.
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "This is a complete subset of tests for max method.",
method = "max",
args = {java.math.BigInteger.class}
)
public void testMaxLess() {
byte aBytes[] = {45, 91, 3, -15, 35, 26, 3, 91};
byte bBytes[] = {12, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, 3, 91};
int aSign = 1;
int bSign = 1;
byte rBytes[] = {12, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, 3, 91};
BigInteger aNumber = new BigInteger(aSign, aBytes);
BigInteger bNumber = new BigInteger(bSign, bBytes);
BigInteger result = aNumber.max(bNumber);
byte resBytes[] = new byte[rBytes.length];
resBytes = result.toByteArray();
for(int i = 0; i < resBytes.length; i++) {
assertTrue(resBytes[i] == rBytes[i]);
}
assertTrue("incorrect sign", result.signum() == 1);
}
/**
* max(BigInteger val).
* numbers are equal.
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "This is a complete subset of tests for max method.",
method = "max",
args = {java.math.BigInteger.class}
)
public void testMaxEqual() {
byte aBytes[] = {45, 91, 3, -15, 35, 26, 3, 91};
byte bBytes[] = {45, 91, 3, -15, 35, 26, 3, 91};
int aSign = 1;
int bSign = 1;
byte rBytes[] = {45, 91, 3, -15, 35, 26, 3, 91};
BigInteger aNumber = new BigInteger(aSign, aBytes);
BigInteger bNumber = new BigInteger(bSign, bBytes);
BigInteger result = aNumber.max(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());
}
/**
* max(BigInteger val).
* max of negative and ZERO.
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "This is a complete subset of tests for max method.",
method = "max",
args = {java.math.BigInteger.class}
)
public void testMaxNegZero() {
byte aBytes[] = {45, 91, 3, -15, 35, 26, 3, 91};
int aSign = -1;
byte rBytes[] = {0};
BigInteger aNumber = new BigInteger(aSign, aBytes);
BigInteger bNumber = BigInteger.ZERO;
BigInteger result = aNumber.max(bNumber);
byte resBytes[] = new byte[rBytes.length];
resBytes = result.toByteArray();
for(int i = 0; i < resBytes.length; i++) {
assertTrue(resBytes[i] == rBytes[i]);
}
assertTrue("incorrect sign", result.signum() == 0);
}
/**
* min(BigInteger val).
* the first is greater.
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "This is a complete subset of tests for mix method.",
method = "min",
args = {java.math.BigInteger.class}
)
public void testMinGreater() {
byte aBytes[] = {12, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, 3, 91};
byte bBytes[] = {45, 91, 3, -15, 35, 26, 3, 91};
int aSign = 1;
int bSign = 1;
byte rBytes[] = {45, 91, 3, -15, 35, 26, 3, 91};
BigInteger aNumber = new BigInteger(aSign, aBytes);
BigInteger bNumber = new BigInteger(bSign, bBytes);
BigInteger result = aNumber.min(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());
}
/**
* min(BigInteger val).
* the first is less.
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "This is a complete subset of tests for mix method.",
method = "min",
args = {java.math.BigInteger.class}
)
public void testMinLess() {
byte aBytes[] = {45, 91, 3, -15, 35, 26, 3, 91};
byte bBytes[] = {12, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, 3, 91};
int aSign = 1;
int bSign = 1;
byte rBytes[] = {45, 91, 3, -15, 35, 26, 3, 91};
BigInteger aNumber = new BigInteger(aSign, aBytes);
BigInteger bNumber = new BigInteger(bSign, bBytes);
BigInteger result = aNumber.min(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());
}
/**
* min(BigInteger val).
* numbers are equal.
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "This is a complete subset of tests for mix method.",
method = "min",
args = {java.math.BigInteger.class}
)
public void testMinEqual() {
byte aBytes[] = {45, 91, 3, -15, 35, 26, 3, 91};
byte bBytes[] = {45, 91, 3, -15, 35, 26, 3, 91};
int aSign = 1;
int bSign = 1;
byte rBytes[] = {45, 91, 3, -15, 35, 26, 3, 91};
BigInteger aNumber = new BigInteger(aSign, aBytes);
BigInteger bNumber = new BigInteger(bSign, bBytes);
BigInteger result = aNumber.min(bNumber);
byte resBytes[] = new byte[rBytes.length];
resBytes = result.toByteArray();
for(int i = 0; i < resBytes.length; i++) {
assertTrue(resBytes[i] == rBytes[i]);
}
assertTrue("incorrect sign", result.signum() == 1);
}
/**
* max(BigInteger val).
* min of positive and ZERO.
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "This is a complete subset of tests for mix method.",
method = "min",
args = {java.math.BigInteger.class}
)
public void testMinPosZero() {
byte aBytes[] = {45, 91, 3, -15, 35, 26, 3, 91};
int aSign = 1;
byte rBytes[] = {0};
BigInteger aNumber = new BigInteger(aSign, aBytes);
BigInteger bNumber = BigInteger.ZERO;
BigInteger result = aNumber.min(bNumber);
byte resBytes[] = new byte[rBytes.length];
resBytes = result.toByteArray();
for(int i = 0; i < resBytes.length; i++) {
assertTrue(resBytes[i] == rBytes[i]);
}
assertTrue("incorrect sign", result.signum() == 0);
}
/**
* negate() a positive number.
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "This is a complete subset of tests for negate method.",
method = "negate",
args = {}
)
public void testNegatePositive() {
byte aBytes[] = {12, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, 3, 91};
int aSign = 1;
byte rBytes[] = {-13, -57, -101, 1, 75, -90, -46, -92, -4, 14, -36, -27, -4, -91};
BigInteger aNumber = new BigInteger(aSign, aBytes);
BigInteger result = aNumber.negate();
byte resBytes[] = new byte[rBytes.length];
resBytes = result.toByteArray();
for(int i = 0; i < resBytes.length; i++) {
assertTrue(resBytes[i] == rBytes[i]);
}
assertTrue("incorrect sign", result.signum() == -1);
}
/**
* negate() a negative number.
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "This is a complete subset of tests for negate method.",
method = "negate",
args = {}
)
public void testNegateNegative() {
byte aBytes[] = {12, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, 3, 91};
int aSign = -1;
byte rBytes[] = {12, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, 3, 91};
BigInteger aNumber = new BigInteger(aSign, aBytes);
BigInteger result = aNumber.negate();
byte resBytes[] = new byte[rBytes.length];
resBytes = result.toByteArray();
for(int i = 0; i < resBytes.length; i++) {
assertTrue(resBytes[i] == rBytes[i]);
}
assertTrue("incorrect sign", result.signum() == 1);
}
/**
* negate() ZERO.
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "This is a complete subset of tests for negate method.",
method = "negate",
args = {}
)
public void testNegateZero() {
byte rBytes[] = {0};
BigInteger aNumber = BigInteger.ZERO;
BigInteger result = aNumber.negate();
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());
}
/**
* signum() of a positive number.
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "This is a complete subset of tests for signum method.",
method = "signum",
args = {}
)
public void testSignumPositive() {
byte aBytes[] = {12, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, 3, 91};
int aSign = 1;
BigInteger aNumber = new BigInteger(aSign, aBytes);
assertEquals("incorrect sign", 1, aNumber.signum());
}
/**
* signum() of a negative number.
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "This is a complete subset of tests for signum method.",
method = "signum",
args = {}
)
public void testSignumNegative() {
byte aBytes[] = {12, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, 3, 91};
int aSign = -1;
BigInteger aNumber = new BigInteger(aSign, aBytes);
assertEquals("incorrect sign", -1, aNumber.signum());
}
/**
* signum() of ZERO.
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "This is a complete subset of tests for signum method.",
method = "signum",
args = {}
)
public void testSignumZero() {
BigInteger aNumber = BigInteger.ZERO;
assertEquals("incorrect sign", 0, aNumber.signum());
}
}