/*
* 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
*/
package org.apache.harmony.tests.java.math;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.math.MathContext;
import java.math.RoundingMode;
import junit.framework.TestCase;
/**
* Class: java.math.BigDecimal
* Methods: abs, compareTo, equals, hashCode,
* max, min, negate, signum
*/
public class BigDecimalCompareTest extends TestCase {
/**
* Abs() of a negative BigDecimal
*/
public void testAbsNeg() {
String a = "-123809648392384754573567356745735.63567890295784902768787678287E+21";
BigDecimal aNumber = new BigDecimal(a);
String result = "123809648392384754573567356745735635678902957849027687.87678287";
assertEquals("incorrect value", result, aNumber.abs().toString());
}
/**
* Abs() of a positive BigDecimal
*/
public void testAbsPos() {
String a = "123809648392384754573567356745735.63567890295784902768787678287E+21";
BigDecimal aNumber = new BigDecimal(a);
String result = "123809648392384754573567356745735635678902957849027687.87678287";
assertEquals("incorrect value", result, aNumber.abs().toString());
}
/**
* Abs(MathContext) of a negative BigDecimal
*/
public void testAbsMathContextNeg() {
String a = "-123809648392384754573567356745735.63567890295784902768787678287E+21";
BigDecimal aNumber = new BigDecimal(a);
int precision = 15;
RoundingMode rm = RoundingMode.HALF_DOWN;
MathContext mc = new MathContext(precision, rm);
String result = "1.23809648392385E+53";
int resScale = -39;
BigDecimal res = aNumber.abs(mc);
assertEquals("incorrect value", result, res.toString());
assertEquals("incorrect scale", resScale, res.scale());
}
/**
* Abs(MathContext) of a positive BigDecimal
*/
public void testAbsMathContextPos() {
String a = "123809648392384754573567356745735.63567890295784902768787678287E+21";
BigDecimal aNumber = new BigDecimal(a);
int precision = 41;
RoundingMode rm = RoundingMode.HALF_EVEN;
MathContext mc = new MathContext(precision, rm);
String result = "1.2380964839238475457356735674573563567890E+53";
int resScale = -13;
BigDecimal res = aNumber.abs(mc);
assertEquals("incorrect value", result, res.toString());
assertEquals("incorrect scale", resScale, res.scale());
}
/**
* Compare to a number of an equal scale
*/
public void testCompareEqualScale1() {
String a = "12380964839238475457356735674573563567890295784902768787678287";
int aScale = 18;
String b = "4573563567890295784902768787678287";
int bScale = 18;
BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
BigDecimal bNumber = new BigDecimal(new BigInteger(b), bScale);
int result = 1;
assertEquals("incorrect result", result, aNumber.compareTo(bNumber));
}
/**
* Compare to a number of an equal scale
*/
public void testCompareEqualScale2() {
String a = "12380964839238475457356735674573563567890295784902768787678287";
int aScale = 18;
String b = "4573563923487289357829759278282992758247567890295784902768787678287";
int bScale = 18;
BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
BigDecimal bNumber = new BigDecimal(new BigInteger(b), bScale);
int result = -1;
assertEquals("incorrect result", result, aNumber.compareTo(bNumber));
}
/**
* Compare to a number of an greater scale
*/
public void testCompareGreaterScale1() {
String a = "12380964839238475457356735674573563567890295784902768787678287";
int aScale = 28;
String b = "4573563567890295784902768787678287";
int bScale = 18;
BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
BigDecimal bNumber = new BigDecimal(new BigInteger(b), bScale);
int result = 1;
assertEquals("incorrect result", result, aNumber.compareTo(bNumber));
}
/**
* Compare to a number of an greater scale
*/
public void testCompareGreaterScale2() {
String a = "12380964839238475457356735674573563567890295784902768787678287";
int aScale = 48;
String b = "4573563567890295784902768787678287";
int bScale = 2;
BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
BigDecimal bNumber = new BigDecimal(new BigInteger(b), bScale);
int result = -1;
assertEquals("incorrect result", result, aNumber.compareTo(bNumber));
}
/**
* Compare to a number of an less scale
*/
public void testCompareLessScale1() {
String a = "12380964839238475457356735674573563567890295784902768787678287";
int aScale = 18;
String b = "4573563567890295784902768787678287";
int bScale = 28;
BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
BigDecimal bNumber = new BigDecimal(new BigInteger(b), bScale);
int result = 1;
assertEquals("incorrect result", result, aNumber.compareTo(bNumber));
}
/**
* Compare to a number of an less scale
*/
public void testCompareLessScale2() {
String a = "12380964839238475457356735674573";
int aScale = 36;
String b = "45735635948573894578349572001798379183767890295784902768787678287";
int bScale = 48;
BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
BigDecimal bNumber = new BigDecimal(new BigInteger(b), bScale);
int result = -1;
assertEquals("incorrect result", result, aNumber.compareTo(bNumber));
}
/**
* Equals() for unequal BigDecimals
*/
public void testEqualsUnequal1() {
String a = "92948782094488478231212478987482988429808779810457634781384756794987";
int aScale = -24;
String b = "7472334223847623782375469293018787918347987234564568";
int bScale = 13;
BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
BigDecimal bNumber = new BigDecimal(new BigInteger(b), bScale);
assertFalse(aNumber.equals(bNumber));
}
/**
* Equals() for unequal BigDecimals
*/
public void testEqualsUnequal2() {
String a = "92948782094488478231212478987482988429808779810457634781384756794987";
int aScale = -24;
String b = "92948782094488478231212478987482988429808779810457634781384756794987";
int bScale = 13;
BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
BigDecimal bNumber = new BigDecimal(new BigInteger(b), bScale);
assertFalse(aNumber.equals(bNumber));
}
/**
* Equals() for unequal BigDecimals
*/
public void testEqualsUnequal3() {
String a = "92948782094488478231212478987482988429808779810457634781384756794987";
int aScale = -24;
String b = "92948782094488478231212478987482988429808779810457634781384756794987";
BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
assertFalse(aNumber.equals(b));
}
/**
* equals() for equal BigDecimals
*/
public void testEqualsEqual() {
String a = "92948782094488478231212478987482988429808779810457634781384756794987";
int aScale = -24;
String b = "92948782094488478231212478987482988429808779810457634781384756794987";
int bScale = -24;
BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
BigDecimal bNumber = new BigDecimal(new BigInteger(b), bScale);
assertEquals(aNumber, bNumber);
}
/**
* equals() for equal BigDecimals
*/
public void testEqualsNull() {
String a = "92948782094488478231212478987482988429808779810457634781384756794987";
int aScale = -24;
BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
assertFalse(aNumber.equals(null));
}
/**
* hashCode() for equal BigDecimals
*/
public void testHashCodeEqual() {
String a = "92948782094488478231212478987482988429808779810457634781384756794987";
int aScale = -24;
String b = "92948782094488478231212478987482988429808779810457634781384756794987";
int bScale = -24;
BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
BigDecimal bNumber = new BigDecimal(new BigInteger(b), bScale);
assertEquals("incorrect value", aNumber.hashCode(), bNumber.hashCode());
}
/**
* hashCode() for unequal BigDecimals
*/
public void testHashCodeUnequal() {
String a = "8478231212478987482988429808779810457634781384756794987";
int aScale = 41;
String b = "92948782094488478231212478987482988429808779810457634781384756794987";
int bScale = -24;
BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
BigDecimal bNumber = new BigDecimal(new BigInteger(b), bScale);
assertTrue("incorrect value", aNumber.hashCode() != bNumber.hashCode());
}
/**
* max() for equal BigDecimals
*/
public void testMaxEqual() {
String a = "8478231212478987482988429808779810457634781384756794987";
int aScale = 41;
String b = "8478231212478987482988429808779810457634781384756794987";
int bScale = 41;
String c = "8478231212478987482988429808779810457634781384756794987";
int cScale = 41;
BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
BigDecimal bNumber = new BigDecimal(new BigInteger(b), bScale);
BigDecimal cNumber = new BigDecimal(new BigInteger(c), cScale);
assertEquals("incorrect value", cNumber, aNumber.max(bNumber));
}
/**
* max() for unequal BigDecimals
*/
public void testMaxUnequal1() {
String a = "92948782094488478231212478987482988429808779810457634781384756794987";
int aScale = 24;
String b = "92948782094488478231212478987482988429808779810457634781384756794987";
int bScale = 41;
String c = "92948782094488478231212478987482988429808779810457634781384756794987";
int cScale = 24;
BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
BigDecimal bNumber = new BigDecimal(new BigInteger(b), bScale);
BigDecimal cNumber = new BigDecimal(new BigInteger(c), cScale);
assertEquals("incorrect value", cNumber, aNumber.max(bNumber));
}
/**
* max() for unequal BigDecimals
*/
public void testMaxUnequal2() {
String a = "92948782094488478231212478987482988429808779810457634781384756794987";
int aScale = 41;
String b = "94488478231212478987482988429808779810457634781384756794987";
int bScale = 41;
String c = "92948782094488478231212478987482988429808779810457634781384756794987";
int cScale = 41;
BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
BigDecimal bNumber = new BigDecimal(new BigInteger(b), bScale);
BigDecimal cNumber = new BigDecimal(new BigInteger(c), cScale);
assertEquals("incorrect value", cNumber, aNumber.max(bNumber));
}
/**
* min() for equal BigDecimals
*/
public void testMinEqual() {
String a = "8478231212478987482988429808779810457634781384756794987";
int aScale = 41;
String b = "8478231212478987482988429808779810457634781384756794987";
int bScale = 41;
String c = "8478231212478987482988429808779810457634781384756794987";
int cScale = 41;
BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
BigDecimal bNumber = new BigDecimal(new BigInteger(b), bScale);
BigDecimal cNumber = new BigDecimal(new BigInteger(c), cScale);
assertEquals("incorrect value", cNumber, aNumber.min(bNumber));
}
/**
* min() for unequal BigDecimals
*/
public void testMinUnequal1() {
String a = "92948782094488478231212478987482988429808779810457634781384756794987";
int aScale = 24;
String b = "92948782094488478231212478987482988429808779810457634781384756794987";
int bScale = 41;
String c = "92948782094488478231212478987482988429808779810457634781384756794987";
int cScale = 41;
BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
BigDecimal bNumber = new BigDecimal(new BigInteger(b), bScale);
BigDecimal cNumber = new BigDecimal(new BigInteger(c), cScale);
assertEquals("incorrect value", cNumber, aNumber.min(bNumber));
}
/**
* min() for unequal BigDecimals
*/
public void testMinUnequal2() {
String a = "92948782094488478231212478987482988429808779810457634781384756794987";
int aScale = 41;
String b = "94488478231212478987482988429808779810457634781384756794987";
int bScale = 41;
String c = "94488478231212478987482988429808779810457634781384756794987";
int cScale = 41;
BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
BigDecimal bNumber = new BigDecimal(new BigInteger(b), bScale);
BigDecimal cNumber = new BigDecimal(new BigInteger(c), cScale);
assertEquals("incorrect value", cNumber, aNumber.min(bNumber));
}
/**
* plus() for a positive BigDecimal
*/
public void testPlusPositive() {
String a = "92948782094488478231212478987482988429808779810457634781384756794987";
int aScale = 41;
String c = "92948782094488478231212478987482988429808779810457634781384756794987";
int cScale = 41;
BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
BigDecimal cNumber = new BigDecimal(new BigInteger(c), cScale);
assertEquals("incorrect value", cNumber, aNumber.plus());
}
/**
* plus(MathContext) for a positive BigDecimal
*/
public void testPlusMathContextPositive() {
String a = "92948782094488478231212478987482988429808779810457634781384756794987";
int aScale = 41;
int precision = 37;
RoundingMode rm = RoundingMode.FLOOR;
MathContext mc = new MathContext(precision, rm);
String c = "929487820944884782312124789.8748298842";
int cScale = 10;
BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
BigDecimal res = aNumber.plus(mc);
assertEquals("incorrect value", c, res.toString());
assertEquals("incorrect scale", cScale, res.scale());
}
/**
* plus() for a negative BigDecimal
*/
public void testPlusNegative() {
String a = "-92948782094488478231212478987482988429808779810457634781384756794987";
int aScale = 41;
String c = "-92948782094488478231212478987482988429808779810457634781384756794987";
int cScale = 41;
BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
BigDecimal cNumber = new BigDecimal(new BigInteger(c), cScale);
assertEquals("incorrect value", cNumber, aNumber.plus());
}
/**
* plus(MathContext) for a negative BigDecimal
*/
public void testPlusMathContextNegative() {
String a = "-92948782094488478231212478987482988429808779810457634781384756794987";
int aScale = 49;
int precision = 46;
RoundingMode rm = RoundingMode.CEILING;
MathContext mc = new MathContext(precision, rm);
String c = "-9294878209448847823.121247898748298842980877981";
int cScale = 27;
BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
BigDecimal res = aNumber.plus(mc);
assertEquals("incorrect value", c, res.toString());
assertEquals("incorrect scale", cScale, res.scale());
}
/**
* negate() for a positive BigDecimal
*/
public void testNegatePositive() {
String a = "92948782094488478231212478987482988429808779810457634781384756794987";
int aScale = 41;
String c = "-92948782094488478231212478987482988429808779810457634781384756794987";
int cScale = 41;
BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
BigDecimal cNumber = new BigDecimal(new BigInteger(c), cScale);
assertEquals("incorrect value", cNumber, aNumber.negate());
}
/**
* negate(MathContext) for a positive BigDecimal
*/
public void testNegateMathContextPositive() {
String a = "92948782094488478231212478987482988429808779810457634781384756794987";
int aScale = 41;
int precision = 37;
RoundingMode rm = RoundingMode.FLOOR;
MathContext mc = new MathContext(precision, rm);
String c = "-929487820944884782312124789.8748298842";
int cScale = 10;
BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
BigDecimal res = aNumber.negate(mc);
assertEquals("incorrect value", c, res.toString());
assertEquals("incorrect scale", cScale, res.scale());
}
/**
* negate() for a negative BigDecimal
*/
public void testNegateNegative() {
String a = "-92948782094488478231212478987482988429808779810457634781384756794987";
int aScale = 41;
String c = "92948782094488478231212478987482988429808779810457634781384756794987";
int cScale = 41;
BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
BigDecimal cNumber = new BigDecimal(new BigInteger(c), cScale);
assertEquals("incorrect value", cNumber, aNumber.negate());
}
/**
* negate(MathContext) for a negative BigDecimal
*/
public void testNegateMathContextNegative() {
String a = "-92948782094488478231212478987482988429808779810457634781384756794987";
int aScale = 49;
int precision = 46;
RoundingMode rm = RoundingMode.CEILING;
MathContext mc = new MathContext(precision, rm);
String c = "9294878209448847823.121247898748298842980877981";
int cScale = 27;
BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
BigDecimal res = aNumber.negate(mc);
assertEquals("incorrect value", c, res.toString());
assertEquals("incorrect scale", cScale, res.scale());
}
/**
* signum() for a positive BigDecimal
*/
public void testSignumPositive() {
String a = "92948782094488478231212478987482988429808779810457634781384756794987";
int aScale = 41;
BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
assertEquals("incorrect value", 1, aNumber.signum());
}
/**
* signum() for a negative BigDecimal
*/
public void testSignumNegative() {
String a = "-92948782094488478231212478987482988429808779810457634781384756794987";
int aScale = 41;
BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
assertEquals("incorrect value", -1, aNumber.signum());
}
/**
* signum() for zero
*/
public void testSignumZero() {
String a = "0";
int aScale = 41;
BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
assertEquals("incorrect value", 0, aNumber.signum());
}
}