android-platform-libcore/luni/src/test/java/libcore/java/math/OldBigDecimalConstructorsTest.java

/*
 *  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 libcore.java.math;

import java.math.BigDecimal;
import java.math.BigInteger;
import java.math.MathContext;
import java.math.RoundingMode;
import junit.framework.TestCase;

public class OldBigDecimalConstructorsTest extends TestCase {

    /**
     * new BigDecimal(BigInteger value, MathContext)
     */
    public void testConstrBigIntegerMathContext() {
        String a = "1231212478987482988429808779810457634781384756794987";
        BigInteger bA = new BigInteger(a);
        int precision = 46;
        RoundingMode rm = RoundingMode.CEILING;
        MathContext mc = new MathContext(precision, rm);
        String res = "1231212478987482988429808779810457634781384757";
        int resScale = -6;
        BigDecimal result = new BigDecimal(bA, mc);
        assertEquals("incorrect value", res, result.unscaledValue().toString());
        assertEquals("incorrect scale", resScale, result.scale());

        // Now test more than just RoundingMode.CEILING:
        //
        BigDecimal bd;
        BigInteger bi =  new BigInteger( "12345678901234567890123456789012345");
        BigInteger nbi = new BigInteger("-12345678901234567890123456789012345");

        mc = new MathContext(31, RoundingMode.UP);
        bd = new BigDecimal(bi, mc);
        assertEquals("incorrect value",  "1.234567890123456789012345678902E+34", bd.toString());
        bd = new BigDecimal(nbi, mc);
        assertEquals("incorrect value", "-1.234567890123456789012345678902E+34", bd.toString());

        mc = new MathContext(28, RoundingMode.DOWN);
        bd = new BigDecimal(bi, mc);
        assertEquals("incorrect value",  "1.234567890123456789012345678E+34", bd.toString());
        bd = new BigDecimal(nbi, mc);
        assertEquals("incorrect value", "-1.234567890123456789012345678E+34", bd.toString());

        mc = new MathContext(33, RoundingMode.CEILING);
        bd = new BigDecimal(bi, mc);
        assertEquals("incorrect value",  "1.23456789012345678901234567890124E+34", bd.toString());
        bd = new BigDecimal(nbi, mc);
        assertEquals("incorrect value", "-1.23456789012345678901234567890123E+34", bd.toString());

        mc = new MathContext(34, RoundingMode.FLOOR);
        bd = new BigDecimal(bi, mc);
        assertEquals("incorrect value",  "1.234567890123456789012345678901234E+34", bd.toString());
        bd = new BigDecimal(nbi, mc);
        assertEquals("incorrect value", "-1.234567890123456789012345678901235E+34", bd.toString());

        mc = new MathContext(34, RoundingMode.HALF_EVEN);
        bd = new BigDecimal(bi, mc);
        assertEquals("incorrect value",  "1.234567890123456789012345678901234E+34", bd.toString());
        bd = new BigDecimal(nbi, mc);
        assertEquals("incorrect value", "-1.234567890123456789012345678901234E+34", bd.toString());
        bd = new BigDecimal(new BigInteger("-12345678901234567890123456789012335"), mc);
        assertEquals("incorrect value", "-1.234567890123456789012345678901234E+34", bd.toString());

        mc = new MathContext(34, RoundingMode.HALF_UP);
        bd = new BigDecimal(bi, mc);
        assertEquals("incorrect value",  "1.234567890123456789012345678901235E+34", bd.toString());
        bd = new BigDecimal(nbi, mc);
        assertEquals("incorrect value", "-1.234567890123456789012345678901235E+34", bd.toString());

        mc = new MathContext(34, RoundingMode.HALF_DOWN);
        bd = new BigDecimal(bi, mc);
        assertEquals("incorrect value",  "1.234567890123456789012345678901234E+34", bd.toString());
        bd = new BigDecimal(nbi, mc);
        assertEquals("incorrect value", "-1.234567890123456789012345678901234E+34", bd.toString());

        mc = new MathContext(34, RoundingMode.UNNECESSARY);
        try {
            bd = new BigDecimal(bi, mc);
            fail("No ArithmeticException for RoundingMode.UNNECESSARY");
        } catch (ArithmeticException e) {
            // expected
        }
        try {
            bd = new BigDecimal(nbi, mc);
            fail("No ArithmeticException for RoundingMode.UNNECESSARY");
        } catch (ArithmeticException e) {
            // expected
        }
    }

    /**
     * new BigDecimal(BigInteger value, int scale, MathContext)
     */
    public void testConstrBigIntegerScaleMathContext() {
        String a = "1231212478987482988429808779810457634781384756794987";
        BigInteger bA = new BigInteger(a);
        int aScale = 10;
        int precision = 46;
        RoundingMode rm = RoundingMode.CEILING;
        MathContext mc = new MathContext(precision, rm);
        String res = "1231212478987482988429808779810457634781384757";
        int resScale = 4;
        BigDecimal result = new BigDecimal(bA, aScale, mc);
        assertEquals("incorrect value", res, result.unscaledValue().toString());
        assertEquals("incorrect scale", resScale, result.scale());

        // Now test more than just RoundingMode.CEILING:
        //
        // ATTENTION:
        //   The remaining section is TEXTUALLY COPIED
        //   from testConstrBigIntegerMathContext
        //   with minor repetitive modifications.
        //
        BigDecimal bd;

        BigInteger bi =  new BigInteger( "12345678901234567890123456789012345");
        BigInteger nbi = new BigInteger("-12345678901234567890123456789012345");

        mc = new MathContext(31, RoundingMode.UP);
        bd = new BigDecimal(bi, -10, mc);
        assertEquals("incorrect value",  "1.234567890123456789012345678902E+44", bd.toString());
        bd = new BigDecimal(nbi, -10, mc);
        assertEquals("incorrect value", "-1.234567890123456789012345678902E+44", bd.toString());

        mc = new MathContext(28, RoundingMode.DOWN);
        bd = new BigDecimal(bi, -10, mc);
        assertEquals("incorrect value",  "1.234567890123456789012345678E+44", bd.toString());
        bd = new BigDecimal(nbi, -10, mc);
        assertEquals("incorrect value", "-1.234567890123456789012345678E+44", bd.toString());

        mc = new MathContext(33, RoundingMode.CEILING);
        bd = new BigDecimal(bi, -10, mc);
        assertEquals("incorrect value",  "1.23456789012345678901234567890124E+44", bd.toString());
        bd = new BigDecimal(nbi, -10, mc);
        assertEquals("incorrect value", "-1.23456789012345678901234567890123E+44", bd.toString());

        mc = new MathContext(34, RoundingMode.FLOOR);
        bd = new BigDecimal(bi, -10, mc);
        assertEquals("incorrect value",  "1.234567890123456789012345678901234E+44", bd.toString());
        bd = new BigDecimal(nbi, -10, mc);
        assertEquals("incorrect value", "-1.234567890123456789012345678901235E+44", bd.toString());

        mc = new MathContext(34, RoundingMode.HALF_EVEN);
        bd = new BigDecimal(bi, -10, mc);
        assertEquals("incorrect value",  "1.234567890123456789012345678901234E+44", bd.toString());
        bd = new BigDecimal(nbi, -10, mc);
        assertEquals("incorrect value", "-1.234567890123456789012345678901234E+44", bd.toString());
        bd = new BigDecimal(new BigInteger("-12345678901234567890123456789012335"), -10, mc);
        assertEquals("incorrect value", "-1.234567890123456789012345678901234E+44", bd.toString());

        mc = new MathContext(34, RoundingMode.HALF_UP);
        bd = new BigDecimal(bi, -10, mc);
        assertEquals("incorrect value",  "1.234567890123456789012345678901235E+44", bd.toString());
        bd = new BigDecimal(nbi, -10, mc);
        assertEquals("incorrect value", "-1.234567890123456789012345678901235E+44", bd.toString());

        mc = new MathContext(34, RoundingMode.HALF_DOWN);
        bd = new BigDecimal(bi, -10, mc);
        assertEquals("incorrect value",  "1.234567890123456789012345678901234E+44", bd.toString());
        bd = new BigDecimal(nbi, -10, mc);
        assertEquals("incorrect value", "-1.234567890123456789012345678901234E+44", bd.toString());

        mc = new MathContext(34, RoundingMode.UNNECESSARY);
        try {
            bd = new BigDecimal(bi, -10, mc);
            fail("No ArithmeticException for RoundingMode.UNNECESSARY");
        } catch (ArithmeticException e) {
            // expected
        }
        try {
            bd = new BigDecimal(nbi, -10, mc);
            fail("No ArithmeticException for RoundingMode.UNNECESSARY");
        } catch (ArithmeticException e) {
            // expected
        }

        // And just TEXTUALLY COPIED again:
        //
        mc = new MathContext(31, RoundingMode.UP);
        bd = new BigDecimal(bi, 10, mc);
        assertEquals("incorrect value",  "1234567890123456789012345.678902", bd.toString());
        bd = new BigDecimal(nbi, 10, mc);
        assertEquals("incorrect value", "-1234567890123456789012345.678902", bd.toString());

        mc = new MathContext(28, RoundingMode.DOWN);
        bd = new BigDecimal(bi, 10, mc);
        assertEquals("incorrect value",  "1234567890123456789012345.678", bd.toString());
        bd = new BigDecimal(nbi, 10, mc);
        assertEquals("incorrect value", "-1234567890123456789012345.678", bd.toString());

        mc = new MathContext(33, RoundingMode.CEILING);
        bd = new BigDecimal(bi, 10, mc);
        assertEquals("incorrect value",  "1234567890123456789012345.67890124", bd.toString());
        bd = new BigDecimal(nbi, 10, mc);
        assertEquals("incorrect value", "-1234567890123456789012345.67890123", bd.toString());

        mc = new MathContext(34, RoundingMode.FLOOR);
        bd = new BigDecimal(bi, 10, mc);
        assertEquals("incorrect value",  "1234567890123456789012345.678901234", bd.toString());
        bd = new BigDecimal(nbi, 10, mc);
        assertEquals("incorrect value", "-1234567890123456789012345.678901235", bd.toString());

        mc = new MathContext(34, RoundingMode.HALF_EVEN);
        bd = new BigDecimal(bi, 10, mc);
        assertEquals("incorrect value",  "1234567890123456789012345.678901234", bd.toString());
        bd = new BigDecimal(nbi, 10, mc);
        assertEquals("incorrect value", "-1234567890123456789012345.678901234", bd.toString());
        bd = new BigDecimal(new BigInteger("-12345678901234567890123456789012335"), 10, mc);
        assertEquals("incorrect value", "-1234567890123456789012345.678901234", bd.toString());

        mc = new MathContext(34, RoundingMode.HALF_UP);
        bd = new BigDecimal(bi, 10, mc);
        assertEquals("incorrect value",  "1234567890123456789012345.678901235", bd.toString());
        bd = new BigDecimal(nbi, 10, mc);
        assertEquals("incorrect value", "-1234567890123456789012345.678901235", bd.toString());

        mc = new MathContext(34, RoundingMode.HALF_DOWN);
        bd = new BigDecimal(bi, 10, mc);
        assertEquals("incorrect value",  "1234567890123456789012345.678901234", bd.toString());
        bd = new BigDecimal(nbi, 10, mc);
        assertEquals("incorrect value", "-1234567890123456789012345.678901234", bd.toString());

        mc = new MathContext(34, RoundingMode.UNNECESSARY);
        try {
            bd = new BigDecimal(bi, 10, mc);
            fail("No ArithmeticException for RoundingMode.UNNECESSARY");
        } catch (ArithmeticException e) {
            // expected
        }
        try {
            bd = new BigDecimal(nbi, 10, mc);
            fail("No ArithmeticException for RoundingMode.UNNECESSARY");
        } catch (ArithmeticException e) {
            // expected
        }

        mc = new MathContext(28, RoundingMode.FLOOR);
        bd = new BigDecimal(bi, 10, mc);
        assertEquals("incorrect value",  "1234567890123456789012345.678", bd.toString());
        bd = new BigDecimal(nbi, 10, mc);
        assertEquals("incorrect value", "-1234567890123456789012345.679", bd.toString());
    }

    public void testConstrBigIntegerScaleMathContext_AndroidFailure() {
        MathContext mc;
        BigDecimal bd;

        mc = new MathContext(17, RoundingMode.FLOOR);
        bd = new BigDecimal(new BigInteger("123456789012345678"), 3, mc);
        assertEquals("incorrect value", "123456789012345.67", bd.toString());
    }


    /**
     * new BigDecimal(char[] value, int offset, int len, MathContext mc);
     */
    public void testConstrCharIntIntMathContext() {
        char value[] = {'-', '1', '2', '3', '8', '0', '.', '4', '7', '3', '8', 'E', '-', '4', '2', '3'};
        int offset = 3;
        int len = 12;
        int precision = 4;
        RoundingMode rm = RoundingMode.CEILING;
        MathContext mc = new MathContext(precision, rm);
        BigDecimal result = new BigDecimal(value, offset, len, mc);
        String res = "3.805E-40";
        int resScale = 43;
        assertEquals("incorrect value", res, result.toString());
        assertEquals("incorrect scale", resScale, result.scale());

        try {
            // Regression for HARMONY-783
            new BigDecimal(new char[] {}, 0, 0, MathContext.DECIMAL32);
            fail("NumberFormatException has not been thrown");
        } catch (NumberFormatException e) {
        }

        // Now test more than just RoundingMode.CEILING:
        //
        // ATTENTION:
        //   The remaining section is TEXTUALLY COPIED
        //   from testConstrBigIntegerScaleMathContext
        //   with minor repetitive modifications.
        //
        char[] biCA =  "bla: 12345678901234567890123456789012345.0E+10, and more bla".toCharArray();
        char[] nbiCA = "bla: -12345678901234567890123456789012345.E+10, and more bla".toCharArray();
        BigDecimal bd;

        mc = new MathContext(31, RoundingMode.UP);
        bd = new BigDecimal(biCA, 5, 41, mc);
        assertEquals("incorrect value",  "1.234567890123456789012345678902E+44", bd.toString());
        bd = new BigDecimal(nbiCA, 5, 41, mc);
        assertEquals("incorrect value", "-1.234567890123456789012345678902E+44", bd.toString());

        mc = new MathContext(28, RoundingMode.DOWN);
        bd = new BigDecimal(biCA, 5, 41, mc);
        assertEquals("incorrect value",  "1.234567890123456789012345678E+44", bd.toString());
        bd = new BigDecimal(nbiCA, 5, 41, mc);
        assertEquals("incorrect value", "-1.234567890123456789012345678E+44", bd.toString());

        mc = new MathContext(33, RoundingMode.CEILING);
        bd = new BigDecimal(biCA, 5, 41, mc);
        assertEquals("incorrect value",  "1.23456789012345678901234567890124E+44", bd.toString());
        bd = new BigDecimal(nbiCA, 5, 41, mc);
        assertEquals("incorrect value", "-1.23456789012345678901234567890123E+44", bd.toString());

        mc = new MathContext(34, RoundingMode.FLOOR);
        bd = new BigDecimal(biCA, 5, 41, mc);
        assertEquals("incorrect value",  "1.234567890123456789012345678901234E+44", bd.toString());
        bd = new BigDecimal(nbiCA, 5, 41, mc);
        assertEquals("incorrect value", "-1.234567890123456789012345678901235E+44", bd.toString());

        mc = new MathContext(34, RoundingMode.HALF_EVEN);
        bd = new BigDecimal(biCA, 5, 41, mc);
        assertEquals("incorrect value",  "1.234567890123456789012345678901234E+44", bd.toString());
        bd = new BigDecimal(nbiCA, 5, 41, mc);
        assertEquals("incorrect value", "-1.234567890123456789012345678901234E+44", bd.toString());
        bd = new BigDecimal("-123456789012345678901234567890123350000000000".toCharArray(), 0, 46, mc);
        assertEquals("incorrect value", "-1.234567890123456789012345678901234E+44", bd.toString());

        mc = new MathContext(34, RoundingMode.HALF_UP);
        bd = new BigDecimal(biCA, 5, 41, mc);
        assertEquals("incorrect value",  "1.234567890123456789012345678901235E+44", bd.toString());
        bd = new BigDecimal(nbiCA, 5, 41, mc);
        assertEquals("incorrect value", "-1.234567890123456789012345678901235E+44", bd.toString());

        mc = new MathContext(34, RoundingMode.HALF_DOWN);
        bd = new BigDecimal(biCA, 5, 41, mc);
        assertEquals("incorrect value",  "1.234567890123456789012345678901234E+44", bd.toString());
        bd = new BigDecimal(nbiCA, 5, 41, mc);
        assertEquals("incorrect value", "-1.234567890123456789012345678901234E+44", bd.toString());

        mc = new MathContext(34, RoundingMode.UNNECESSARY);
        try {
            bd = new BigDecimal(biCA, 5, 41, mc);
            fail("No ArithmeticException for RoundingMode.UNNECESSARY");
        } catch (ArithmeticException e) {
            // expected
        }
        try {
            bd = new BigDecimal(nbiCA, 5, 41, mc);
            fail("No ArithmeticException for RoundingMode.UNNECESSARY");
        } catch (ArithmeticException e) {
            // expected
        }
    }

    /**
     * new BigDecimal(char[] value, int offset, int len, MathContext mc);
     */
    public void testConstrCharIntIntMathContextException1() {
        char value[] = {'-', '1', '2', '3', '8', '0', '.', '4', '7', '3', '8', 'E', '-', '4', '2', '3'};
        int offset = 3;
        int len = 120;
        int precision = 4;
        RoundingMode rm = RoundingMode.CEILING;
        MathContext mc = new MathContext(precision, rm);
        try {
            new BigDecimal(value, offset, len, mc);
            fail("NumberFormatException has not been thrown");
        } catch (NumberFormatException e) {
        }
     }

    /**
     * new BigDecimal(char[] value, MathContext mc);
     */
    public void testConstrCharMathContext() {
        // Now test more than just regression
        // (even if for quite sure the implementation will use the offset/len variant internally):
        //
        char[] biCA =  "12345678901234567890123456789012345.0E+10".toCharArray();
        char[] nbiCA = "-12345678901234567890123456789012345.E+10".toCharArray();
        BigDecimal bd;
        MathContext mc;

        mc = new MathContext(31, RoundingMode.UP);
        bd = new BigDecimal(biCA, mc);
        assertEquals("incorrect value",  "1.234567890123456789012345678902E+44", bd.toString());
        bd = new BigDecimal(nbiCA, mc);
        assertEquals("incorrect value", "-1.234567890123456789012345678902E+44", bd.toString());

        mc = new MathContext(28, RoundingMode.DOWN);
        bd = new BigDecimal(biCA, mc);
        assertEquals("incorrect value",  "1.234567890123456789012345678E+44", bd.toString());
        bd = new BigDecimal(nbiCA, mc);
        assertEquals("incorrect value", "-1.234567890123456789012345678E+44", bd.toString());

        mc = new MathContext(33, RoundingMode.CEILING);
        bd = new BigDecimal(biCA, mc);
        assertEquals("incorrect value",  "1.23456789012345678901234567890124E+44", bd.toString());
        bd = new BigDecimal(nbiCA, mc);
        assertEquals("incorrect value", "-1.23456789012345678901234567890123E+44", bd.toString());

        mc = new MathContext(34, RoundingMode.UNNECESSARY);
        try {
            bd = new BigDecimal(biCA, mc);
            fail("No ArithmeticException for RoundingMode.UNNECESSARY");
        } catch (ArithmeticException e) {
            // expected
        }
        try {
            bd = new BigDecimal(nbiCA, mc);
            fail("No ArithmeticException for RoundingMode.UNNECESSARY");
        } catch (ArithmeticException e) {
            // expected
        }
    }

    /**
     * new BigDecimal(double, MathContext)
     */
    public void testConstrDoubleMathContext() {
        double a = 732546982374982347892379283571094797.287346782359284756;
        int precision = 21;
        RoundingMode rm = RoundingMode.CEILING;
        MathContext mc = new MathContext(precision, rm);
        String res = "732546982374982285074";
        int resScale = -15;
        BigDecimal result = new BigDecimal(a, mc);
        assertEquals("incorrect value", res, result.unscaledValue().toString());
        assertEquals("incorrect scale", resScale, result.scale());

        // Now test more than just RoundingMode.CEILING
        //
        BigDecimal bd;

        mc = new MathContext(9, RoundingMode.UP);
        bd = new BigDecimal(123456789.125, mc);
        assertEquals("incorrect value",  "123456790", bd.toString());
        bd = new BigDecimal(-123456789.125, mc);
        assertEquals("incorrect value", "-123456790", bd.toString());

        mc = new MathContext(8, RoundingMode.DOWN);
        bd = new BigDecimal(123456789.125, mc);
        assertEquals("incorrect value",  "1.2345678E+8", bd.toString());
        bd = new BigDecimal(-123456789.125, mc);
        assertEquals("incorrect value", "-1.2345678E+8", bd.toString());

        mc = new MathContext(10, RoundingMode.CEILING);
        bd = new BigDecimal(123456789.125, mc);
        assertEquals("incorrect value",  "123456789.2", bd.toString());
        bd = new BigDecimal(-123456789.125, mc);
        assertEquals("incorrect value", "-123456789.1", bd.toString());

        mc = new MathContext(8, RoundingMode.FLOOR);
        bd = new BigDecimal(123456789.125, mc);
        assertEquals("incorrect value",  "1.2345678E+8", bd.toString());
        bd = new BigDecimal(-123456789.125, mc);
        assertEquals("incorrect value", "-1.2345679E+8", bd.toString());

        mc = new MathContext(11, RoundingMode.HALF_EVEN);
        //
        // VERY FUNNY:
        // This works:
        bd = new BigDecimal("123456789.125", mc);
        assertEquals("incorrect value",  "123456789.12", bd.toString());
        // But this doesn't:
//        bd = new BigDecimal(123456789.125, mc);
//        assertEquals("incorrect value",  "123456789.12", bd.toString());

//        bd = new BigDecimal(-123456789.125, mc);
//        assertEquals("incorrect value", "-123456789.12", bd.toString());
        bd = new BigDecimal(-123456789.135, mc);
        assertEquals("incorrect value", "-123456789.14", bd.toString());

        mc = new MathContext(11, RoundingMode.HALF_UP);
        bd = new BigDecimal("123456789.125", mc);
        assertEquals("incorrect value",  "123456789.13", bd.toString());

        // AND HERE, TOO:
//        mc = new MathContext(11, RoundingMode.HALF_UP);
//        bd = new BigDecimal(123456789.125, mc);
//        assertEquals("incorrect value",  "123456789.13", bd.toString());
//        bd = new BigDecimal(-123456789.125, mc);
//        assertEquals("incorrect value", "-123456789.13", bd.toString());

        mc = new MathContext(11, RoundingMode.HALF_DOWN);
        //
        // SAME HERE:
        // This works:
        bd = new BigDecimal("123456789.125", mc);
        assertEquals("incorrect value",  "123456789.12", bd.toString());
        // But this doesn't:
//        bd = new BigDecimal(123456789.125, mc);
//        assertEquals("incorrect value",  "123456789.12", bd.toString());

//        bd = new BigDecimal(123456789.125, mc);
//        assertEquals("incorrect value",  "123456789.12", bd.toString());
//        bd = new BigDecimal(-123456789.125, mc);
//        assertEquals("incorrect value", "-123456789.12", bd.toString());

        mc = new MathContext(8, RoundingMode.UNNECESSARY);
        try {
            bd = new BigDecimal(123456789.125, mc);
            fail("No ArithmeticException for RoundingMode.UNNECESSARY");
        } catch (ArithmeticException e) {
            // expected
        }
        try {
            bd = new BigDecimal(-123456789.125, mc);
            fail("No ArithmeticException for RoundingMode.UNNECESSARY");
        } catch (ArithmeticException e) {
            // expected
        }
    }

    public void testConstrDoubleMathContext_AndroidFailure() {
        BigDecimal bd;
        MathContext mc;

        mc = new MathContext(11, RoundingMode.HALF_EVEN);
        //
        // VERY FUNNY:
        // This works:
        bd = new BigDecimal("123456789.125", mc);
        assertEquals("incorrect value",  "123456789.12", bd.toString());
        // But this doesn't:
        bd = new BigDecimal(123456789.125, mc);
        assertEquals("incorrect value",  "123456789.12", bd.toString());

        bd = new BigDecimal(-123456789.125, mc);
        assertEquals("incorrect value", "-123456789.12", bd.toString());

        // AND HERE, TOO:
        mc = new MathContext(11, RoundingMode.HALF_UP);
        bd = new BigDecimal(123456789.125, mc);
        assertEquals("incorrect value",  "123456789.13", bd.toString());
        bd = new BigDecimal(-123456789.125, mc);
        assertEquals("incorrect value", "-123456789.13", bd.toString());

        mc = new MathContext(11, RoundingMode.HALF_DOWN);
        //
        // SAME HERE:
        // This works:
        bd = new BigDecimal("123456789.125", mc);
        assertEquals("incorrect value",  "123456789.12", bd.toString());
        // But this doesn't:
        bd = new BigDecimal(123456789.125, mc);
        assertEquals("incorrect value",  "123456789.12", bd.toString());

        bd = new BigDecimal(123456789.125, mc);
        assertEquals("incorrect value",  "123456789.12", bd.toString());
        bd = new BigDecimal(-123456789.125, mc);
        assertEquals("incorrect value", "-123456789.12", bd.toString());
    }

    /**
     * new BigDecimal(long, MathContext)
     */
    public void testConstrLongMathContext() {
        long a = 4576578677732546982L;
        int precision = 5;
        RoundingMode rm = RoundingMode.CEILING;
        MathContext mc = new MathContext(precision, rm);
        String res = "45766";
        int resScale = -14;
        BigDecimal result = new BigDecimal(a, mc);
        assertEquals("incorrect value", res, result.unscaledValue().toString());
        assertEquals("incorrect scale", resScale, result.scale());

        // Now test more than just RoundingMode.CEILING
        //
        BigDecimal bd;

        mc = new MathContext(15, RoundingMode.UP);
        bd = new BigDecimal(78901234567890125L, mc);
        assertEquals("incorrect value",  "7.89012345678902E+16", bd.toString());
        bd = new BigDecimal(-78901234567890125L, mc);
        assertEquals("incorrect value", "-7.89012345678902E+16", bd.toString());

        mc = new MathContext(12, RoundingMode.DOWN);
        bd = new BigDecimal(78901234567890125L, mc);
        assertEquals("incorrect value",  "7.89012345678E+16", bd.toString());
        bd = new BigDecimal(-78901234567890125L, mc);
        assertEquals("incorrect value", "-7.89012345678E+16", bd.toString());

        mc = new MathContext(15, RoundingMode.CEILING);
        bd = new BigDecimal(78901234567890125L, mc);
        assertEquals("incorrect value",  "7.89012345678902E+16", bd.toString());
        bd = new BigDecimal(-78901234567890125L, mc);
        assertEquals("incorrect value", "-7.89012345678901E+16", bd.toString());

        mc = new MathContext(12, RoundingMode.FLOOR);
        bd = new BigDecimal(78901234567890125L, mc);
        assertEquals("incorrect value",  "7.89012345678E+16", bd.toString());
        bd = new BigDecimal(-78901234567890125L, mc);
        assertEquals("incorrect value", "-7.89012345679E+16", bd.toString());

        mc = new MathContext(16, RoundingMode.HALF_EVEN);
        bd = new BigDecimal(78901234567890125L, mc);
        assertEquals("incorrect value",  "7.890123456789012E+16", bd.toString());
        bd = new BigDecimal(-78901234567890125L, mc);
        assertEquals("incorrect value", "-7.890123456789012E+16", bd.toString());
        bd = new BigDecimal(-78901234567890135L, mc);
        assertEquals("incorrect value", "-7.890123456789014E+16", bd.toString());

        mc = new MathContext(16, RoundingMode.HALF_UP);
        bd = new BigDecimal(78901234567890125L, mc);
        assertEquals("incorrect value",  "7.890123456789013E+16", bd.toString());
        bd = new BigDecimal(-78901234567890125L, mc);
        assertEquals("incorrect value", "-7.890123456789013E+16", bd.toString());

        mc = new MathContext(16, RoundingMode.HALF_DOWN);
        bd = new BigDecimal(78901234567890125L, mc);
        assertEquals("incorrect value",  "7.890123456789012E+16", bd.toString());
        bd = new BigDecimal(-78901234567890125L, mc);
        assertEquals("incorrect value", "-7.890123456789012E+16", bd.toString());

        mc = new MathContext(8, RoundingMode.UNNECESSARY);
        try {
            bd = new BigDecimal(78901234567890125L, mc);
            fail("No ArithmeticException for RoundingMode.UNNECESSARY");
        } catch (ArithmeticException e) {
            // expected
        }
        try {
            bd = new BigDecimal(-78901234567890125L, mc);
            fail("No ArithmeticException for RoundingMode.UNNECESSARY");
        } catch (ArithmeticException e) {
            // expected
        }
    }

    /**
     * new BigDecimal(String value)
     * when value is not a valid representation of BigDecimal.
     */
    public void testConstrStringException() {
        String a = "-238768.787678287a+10";
        try {
            BigDecimal bd = new BigDecimal(a);
            fail("NumberFormatException has not been caught: " + bd.toString());
        } catch (NumberFormatException e) {}
    }

    /**
     * new BigDecimal(String value, MathContext)
     */
    public void testConstrStringMathContext() {
        String a = "-238768787678287e214";
        int precision = 5;
        RoundingMode rm = RoundingMode.CEILING;
        MathContext mc = new MathContext(precision, rm);
        String res = "-23876";
        int resScale = -224;
        BigDecimal result = new BigDecimal(a, mc);
        assertEquals("incorrect value", res, result.unscaledValue().toString());
        assertEquals("incorrect scale", resScale, result.scale());

        // Now test more than just RoundingMode.CEILING:
        //
        String biStr = new String( "12345678901234567890123456789012345.0E+10");
        String nbiStr = new String("-12345678901234567890123456789012345.E+10");
        BigDecimal bd;

        mc = new MathContext(31, RoundingMode.UP);
        bd = new BigDecimal(biStr, mc);
        assertEquals("incorrect value",  "1.234567890123456789012345678902E+44", bd.toString());
        bd = new BigDecimal(nbiStr, mc);
        assertEquals("incorrect value", "-1.234567890123456789012345678902E+44", bd.toString());

        mc = new MathContext(28, RoundingMode.DOWN);
        bd = new BigDecimal(biStr, mc);
        assertEquals("incorrect value",  "1.234567890123456789012345678E+44", bd.toString());
        bd = new BigDecimal(nbiStr, mc);
        assertEquals("incorrect value", "-1.234567890123456789012345678E+44", bd.toString());

        mc = new MathContext(33, RoundingMode.CEILING);
        bd = new BigDecimal(biStr, mc);
        assertEquals("incorrect value",  "1.23456789012345678901234567890124E+44", bd.toString());
        bd = new BigDecimal(nbiStr, mc);
        assertEquals("incorrect value", "-1.23456789012345678901234567890123E+44", bd.toString());

        mc = new MathContext(34, RoundingMode.UNNECESSARY);
        try {
            bd = new BigDecimal(biStr, mc);
            fail("No ArithmeticException for RoundingMode.UNNECESSARY");
        } catch (ArithmeticException e) {
            // expected
        }
        try {
            bd = new BigDecimal(nbiStr, mc);
            fail("No ArithmeticException for RoundingMode.UNNECESSARY");
        } catch (ArithmeticException e) {
            // expected
        }

        mc = new MathContext(7, RoundingMode.FLOOR);
        bd = new BigDecimal("1000000.9", mc);
        assertEquals("incorrect value", "1000000", bd.toString());
    }

// ANDROID ADDED

    /**
     * @tests java.math.BigDecimal#BigDecimal(java.math.BigInteger, int)
     */
    public void test_Constructor_java_math_BigInteger_int() {
        BigInteger value = new BigInteger("12345908");
        BigDecimal big = new BigDecimal(value);
        assertTrue("the BigDecimal value is not initialized properly",
                big.unscaledValue().equals(value)
                && big.scale() == 0);

        BigInteger value2 = new BigInteger("12334560000");
        BigDecimal big2 = new BigDecimal(value2, 5);
        assertTrue("the BigDecimal value is not initialized properly",
                big2.unscaledValue().equals(value2)
                && big2.scale() == 5);
        assertTrue("the BigDecimal value is not represented properly", big2.toString().equals(
                "123345.60000"));
    }

    /**
     * @tests java.math.BigDecimal#BigDecimal(double)
     */
    public void test_Constructor_Double() {
        BigDecimal big = new BigDecimal(123E04);
        assertTrue("the BigDecimal value taking a double argument is not initialized properly", big
                .toString().equals("1230000"));
        big = new BigDecimal(1.2345E-12);
        assertTrue("the double representation is not correct for 1.2345E-12",
                big.doubleValue() == 1.2345E-12);
        big = new BigDecimal(-12345E-3);
        assertTrue("the double representation is not correct for -12345E-3",
                big.doubleValue() == -12.345);
        big = new BigDecimal(5.1234567897654321e138);
        assertTrue("the double representation is not correct for 5.1234567897654321e138", big
                .doubleValue() == 5.1234567897654321E138
                && big.scale() == 0);
        big = new BigDecimal(0.1);
        assertTrue("the double representation of 0.1 bigDecimal is not correct",
                big.doubleValue() == 0.1);
        big = new BigDecimal(0.00345);
        assertTrue("the double representation of 0.00345 bigDecimal is not correct", big
                .doubleValue() == 0.00345);
        // regression test for HARMONY-2429
        big = new BigDecimal(-0.0);
        assertTrue("the double representation of -0.0 bigDecimal is not correct", big.scale() == 0);
    }

    /**
     * @tests java.math.BigDecimal#BigDecimal(java.lang.String)
     */
    public void test_Constructor_java_lang_String() throws NumberFormatException {
        BigDecimal big = new BigDecimal("345.23499600293850");
        assertTrue("the BigDecimal value is not initialized properly", big.toString().equals(
                "345.23499600293850")
                && big.scale() == 14);
        big = new BigDecimal("-12345");
        assertTrue("the BigDecimal value is not initialized properly", big.toString().equals(
                "-12345")
                && big.scale() == 0);
        big = new BigDecimal("123.");
        assertTrue("the BigDecimal value is not initialized properly", big.toString().equals("123")
                && big.scale() == 0);

    }
}